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  • thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering  (86)
  • Deutschland
  • Inorganic Chemistry
  • KIT Scientific Publishing  (89)
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  • 1
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    Machine Learning for Camera-Based Monitoring of Laser Welding Processes (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The increasing use of automated laser welding processes causes high demands on process monitoring. This work demonstrates methods that use a camera mounted on the focussing optics to perform pre-, in-, and post-process monitoring of welding processes. The implementation uses machine learning methods. All algorithms consider the integration into industrial processes. These challenges include a small database, limited industrial manufacturing inference hardware, and user acceptance.
    Keywords: CNN; stacked dilated U-Net; semantic segmentation; hairpin technology; laser welding; quality assurance; machine learning; Qualitätssicherung; semantische Segmentierung; Hairpin Technologie; Laserschweißen; Maschinelles Lernen; Künstliche Intelligenz ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 2
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    Nutzung der keramischen Glühkerze als Sensorelement (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: This work presents methods for using the ceramic glow plug as a sensor element. This means that the ceramic glow plug will not only perform its conventional task as a heating element but will also provide information, such as motor speed, from the combustion chamber as a sensor. The main focus will be on the change in resistance, particularly under the influence of a temperature change, in the immediate vicinity of the ceramic glow plug.
    Keywords: glow plug; Ceramic glow plug; Sensor; Drehzahlbestimmung; Glühkerze; Keramikglühkerze ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 3
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    State-of-the-Art of High-Power Gyro-Devices (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: This report presents an update of the experimental achievements published in the review “State- of-the-Art of High-Power Gyro-Devices and Free Electron Masers”, Journal of Infrared, Millimeter, and Terahertz Waves, 41, No. 1, pp 1-140 (2020) and in the KIT Scientific Report 7761 (2021), related to the development of gyro-devices (Tables 2-34). Emphasis is on high-power gyrotron oscillators for long-pulse or continuous wave (CW) operation and pulsed gyrotrons for any applications.
    Keywords: Dielectric Vacuum Windows; Gyro-Amplifier; Gyro-BWO; Gyrotron-Oscillator; Dielektrische Vakuumfenster; CARM; Gyro-Verstärker; Gyro-RWO; Gyrotron-Oszillator ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 4
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    Der Quasi-n-Level Betrieb des Flying Capacitor Umrichters für Mittelspannungsanwendungen (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The quasi-n-level operation of the flying capacitor converter (FCCs) is an optimized operation mode of a multilevel converter. The quasi-n-level operation of a multilevel converter was presented with an analysis of its advantages and disadvantages. For the Q2LB of the FCC, the theory as well as the control, modulation and balancing algorithms are presented. A medium voltage prototype was built to validate the theory.
    Keywords: medium voltage; flying capacitor converter; multilevel converter; Mittelspannungsanwendungen; Flying Capacitor Umrichter; Multilevel Umrichter; Quasi-n-Level Betrieb ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 5
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    Intelligent Reflecting Surfaces in Wireless Communication Systems (2024)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Accompanied with the development of the wireless communication technologies, the high data traffic is more necessary for civil and industrial applications than ever The concept of an intelligent reflective surface (IRS) has attracted considerable attention recently as a low-cost solution. As the main contribution, the dissertation creates new state-of-the-art and formulates a solid milestone for the IRS research field.
    Keywords: Signal Processing; Communication Systems; Wireless Communication; Intelligent Reflecting Surface; Signalverarbeitung; Kommunikationssysteme; drahtlose Kommunikation; Intelligente reflektierende Oberfläche ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 6
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    Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In this work, the first simulation model of oxygen depolarized cathodes (ODC), which are silver catalyst-based gas diffusion electrodes, is presented that considers the phase equilibrium of the gas-liquid interface and structure-related inhomogeneities in electrolyte distribution. By means of the model it has been identified that mass transport of water and ions in the liquid phase is a crucial factor for electrode performance and how it is influenced by the electrode structure.
    Keywords: Chlor-alkali electrolysis; Three-phase model; Electrochemical Mass Spectroscopy; Inhomogeneous electrode structure; Chloralkali-Elektrolyse; Dreiphasen Modellierung; Elektrochemische Massenspektroskopie; Maxwell-Stefan Diffusion; Inhomogene Elektrodenstruktur ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 7
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    Modellbasierte prädiktive Längsdynamikregelung für künftige Fahrerassistenz- und Automatisierungssysteme (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: A fundamental requirement for future automated vehicles is that curbs and other bumps in the road can be driven over safely, reliably and accurately. This work presents a concept for a model-based, predictive longitudinal vehicle dynamics control. It demonstrates in practice how the knowledge of the road profile ahead can be used to both increase the control performance and improve the driving comfort.
    Keywords: Preview; Longitudinal Motion Control; Road Profile Disturbances; Vehicle Dynamics; Vorausschau; Längsregelung; Störungen durch Fahrbahnprofil; Two Point Tire Model; Fahrzeugdynamik ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 8
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    Analyse und Modellbildung von PEM-Brennstoffzellen mittels elektrochemischer Impedanzspektroskopie (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: This work presents a physically motivated model for predicting the current/voltage behavior of PEM fuel cells. Extensive impedance measurements and DRT analyses were used to identify and quantify all loss processes. The developed model was successfully validated and provides insights into the internal processes of the fuel cell. It enables targeted optimization and shows great potential for increasing the performance of PEM fuel cells.
    Keywords: Ersatzschaltbild; Modellierung; Verteilungsfunktion; Impedanzspektroskopie; PEM-Brennstoffzelle ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 9
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    Limited Information Shared Control and its Applications to Large Vehicle Manipulators (2024)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: This work focuses on the Limited Information Shared Control and its controller design using potential games. Through the developed systematic controller design, the experiments demonstrate the effectiveness and superiority of this concept compared to traditional manual and non-cooperative control approaches in the application of large vehicle manipulators.
    Keywords: Experimental Validation; Vehicle Manipulator; Cooperative Shared Control; Potential Games; Differential Games; Experimentelle Validierung; Mobile Arbeitsmaschinen; Kooperative Regelung; Potenzialspiele; Differenzialspiele ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 10
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    Transactive Control of Coupled Electric Power and District Heating Networks (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The design of approaches for future market-based energy network operation faces the technical challenge of needing to coordinate a vast number of network participants spatially and temporally, in order to balance energy supply and demand, while achieving secure network operation. To meet this challenge, the research field of transactive control emerged. Within this work a new transactive control approach for coupled electric power and district heating networks is presented.
    Keywords: Transactive Control; Wärmenetze; Stromnetze; Sektorenkopplung; Energiemärkte; District Heating Networks; Electric Power Networks; Energy Markets ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 11
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    Proceedings of the International Workshop on Medical Ultrasound Tomography: 14.-15. Oct. 2019, Wayne State University, Detroit, Michigan, USA (2023)
    KIT Scientific Publishing | KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Ultrasound Tomography is an emerging technology for medical imaging that is quickly approaching its clinical utility. Research groups around the globe are engaged in research spanning from theory to practical applications. The International Workshop on Medical Ultrasound Tomography 2019 brought together scientists to exchange their knowledge and discuss new ideas and results in order to boost the research in Ultrasound Tomography.
    Keywords: Ultraschall Tomographie ; Medizinische Bildgebung ; Ultrasound Tomography ; Medical Imaging ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 12
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    A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: A gyrotron is used in magnetically confined plasma experiments for heating, current drive, plasma stabilization and plasma diagnostics. This work presents the first design and construction of a multi-frequency / multi-purpose coaxial-cavity pre-prototype gyrotron operating at (136)/170/204 GHz with an output power of 2 MW. It is the first step towards operating frequencies up to 240 GHz using the coaxial-cavity gyrotron technology.
    Keywords: mode generator; multi-frequency operation; electron vacuum tube; gyrotron; nuclear fusion; Modenerzeuger; Mehrfrequenzbetrieb; Vakuumröhre; Gyrotron; Kernfusion ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 13
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    Integration of Flywheel Energy Storage Systems in Low Voltage Distribution Grids (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: A Flywheel Energy Storage System (FESS) can rapidly inject or absorb high amounts of active power in order to support the grid, following abrupt changes in the generation or in the demand, with no concern over its lifetime. The work presented in this book studies the grid integration of a high-speed FESS in low voltage distribution grids from several perspectives, including optimal allocation, sizing, modeling, real-time simulation, and Power Hardware-in-the-Loop testing.
    Keywords: Schwungräder; Energiespeicher; Echtzeitsimulation; Power Hardware-in-the-Loop-Tests; Flywheels; Energy Storage; Real-time Simulation; Power Hardware-in-the-Loop Testing ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 14
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    Energy-efficient, scalable and modular industrial microwave applicator for high temperature alkaline hydrolysis of PET (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Microwave-assisted alkaline hydrolysis of PET can be 20 times faster and at lower temperatures. This work presents a novel industrial microwave applicator at 2.45 GHz with homogeneous distribution to support this reaction, which allows an efficient and continuous operation. In addition, an innovative dielectric and calorimetric measurements setup is presented. Furthermore, the modelling of the reaction kinetics based on the measured dielectric parameters is presented.
    Keywords: Mikrowellen; dielektrische Messungen; industrieller Maßstab; alkalische Hydrolyse von PET; microwaves; dielectric measurements; industrial scale; alkaline hydrolysis of PET ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 15
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    Multisensorielle Navigation und Kartierung in schwierigen Bedingungen (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Robust navigation as well as mapping of the environment are critical for autonomous aerial vehicles. This is especially challenging in poor visual conditions or degraded GNSS. Therefore, this thesis proposes multi-sensor fusion approaches based on FMCW radar, cameras and inertial sensors. These approaches can cope with such challenging conditions as demonstrated in different scenarios.
    Keywords: Sensorfusion; Navigation; Kartierung; FMCW-Radar; Thermalkamera; sensorfusion; navigation; mapping; FMCW radar; thermal camera ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 16
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    Technologische Beschreibung und physiologische Bewertung eines hochaufgelösten Laserscanner- Scheinwerfersystems (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The approach of a laser scanning headlamp for adaptive light functions includes six laser sources which are deviated on a micro mirror. The oscillation of that mirror generates an extended light distribution on a white light converter which is then projected on the road. This work describes that approach and presents methods to evaluate the homogeneity of headlamp light distributions.
    Keywords: automotive light functions; homogeneity; laser scanning; Headlamp; Fahrzeug-Lichtfunktionen; Homogenität; Laser-Scanner; Scheinwerfer ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 17
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    Self-Learning Longitudinal Control for On-Road Vehicles (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Reinforcement Learning is a promising tool to automate controller tuning. However, significant extensions are required for real-world applications to enable fast and robust learning. This work proposes several additions to the state of the art and proves their capability in a series of real world experiments.
    Keywords: Regelungstechnik; Künstliche Intelligenz; Fahrzeugregelung; Längsdynamik; Bestärkendes Lernen; Control Theory; Artificial Intelligence; Vehicle Control; Longitudinal Dynamics; Reinforcement Learning ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 18
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    Modeling Backscattering Behavior of Vulnerable Road Users Based on High-Resolution Radar Measurements (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: During the evolvement of autonomous driving technology, obtaining reliable 3-D environmental information is an indispensable task in approaching safe driving. The operational behavior of automotive radars can be precisely evaluated in a virtual test environment by modeling its surrounding, specifically vulnerable road users (VRUs). Such a realistic model can be generated based on the radar cross section (RCS) and Doppler signatures of a VRU. Therefore, this work proposes a high-resolution RCS measurement technique to determine the relevant scattering points of different VRUs.
    Keywords: RCSmodeling of extended targets; range-Doppler; radar high-resolution measurement; Human body radar cross section (RCS) measurement; RCS-Modellierung von ausgedehnten Ziel; Entfernungs-Doppler; hochauflösende Radarmessung; Messung des Radarquerschnitts (RCS) des menschlichen Körpers ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
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  • 19
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    Integrated optical sensors on the Si₃N₄-organic hybrid (SiNOH) platform (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: A waveguide-based sensor chip is demonstrated that is suitable for point-of-care applications. The biosensor is designed using a mathematical model to investigate the sensitivity of the waveguides. A new class of integrated laser sources for visible wavelengths is being investigated for the first time for light coupling into the waveguides. The functionality of the waveguide-based biosensor chip is successfully demonstrated by detection experiments.
    Keywords: Sensorik; integrierte Laser; organische Laser; photonische Wellenleiter; patientennahe Labordiagnostik; Sensors; integrated lasers; organnic lasers; photonic waveguides; point-of-care diagnostics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
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  • 20
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    In Situ Characterization and Modelling of Drying Dynamics for Scalable Printing of Hybrid Perovskite Photovoltaics (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Hybrid perovskite photovoltaics could play a vital role in future’s renewable energy production. However, there are still severe challenges when scaling the technology. In this work, perovskite solution films drying in laminar and slot-jet air flows are investigated extensively by optical in situ characterization. The main results are a quantitative model of perovskite drying dynamics and a novel in situ imaging technique – yielding valuable predictions for large-scale perovskite fabrication.
    Keywords: Hybrid perovskite ; in situ characterization ; drying dynamics ; photoluminescence imaging ; up-scaling ; Hybride Perowskite ; In-Situ Charakterisierung ; Trocknungsdynamik ; Photolumineszenz-Bildgebung ; Hochskalierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 21
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    Hybrid photonic assemblies based on 3D-printed coupling structures (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Photonic integrated circuits (PIC) become increasingly important for numerous applications. Mass production of PIC has become widely available, but large-volume low-cost photonic packaging still represents a challenge. Additive micro-fabrication of free-form optical coupling structures is discussed as a concept to overcome this technology gap. Multi-photon 3D-lithography is used to fabricate dielectric waveguides ("photonic wire bonds", PWB) as well as facet-attached microlenses (FaML).
    Keywords: Photonische Aufbau- und Verbindungstechnik; integrierte photonische Schaltkreise; Multiphotonenlithographie; additive 3D Mikrofabrikation; Mikrooptik; photonic packaging; photonic integrated circuits (PIC); multi-photon lithographie; additive 3D micro-fabrication; micro-optics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
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  • 22
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    380 kV Superconducting Fault Current Limiter Feasibility Study (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In this study the technical and economic feasibility of a 380 kV, 5 kA resistive type superconducting fault current limiter was investigated. Conceptual designs were developed with superconducting tapes cooled by liquid nitrogen and arranged in bifilar coils. A cryostat was designed using FEM simulations taking into account the non-linear voltage distribution. For the complete system including current limiting reactors and cooling system, the investment and operation costs were calculated.
    Keywords: economic feasibility; bifilar coil; high voltage; superconducting fault current limiter; superconductor; wirtschaftliche Machbarkeit; bifilare Spule; Hochspannung; supraleitender Strombegrenzer; Supraleiter ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
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  • 23
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    Überwachte Methoden für die spektrale Entmischung mit künstlichen neuronalen Netzen (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In this work, artificial neural networks trained in a supervised manner for spectral unmixing are investigated. For this purpose, a suitable network architecture is determined first. After that, the focus lies on the generation of suitable training data. Model-based methods that generate training data from real pure spectra and data-based methods that augment existing training data are presented and evaluated.
    Keywords: data generation; data augmentation; supervised training; artificial neural network; hyperspectral image; Datenerzeugung; Datenaugmentierung; überwachtes Training; Hyperspektralbild; künstliche neuronale Netze ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 24
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    New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work presents the development of a new sub-THz source for the generation of trains of coherent high-power ultra-short pulses at 263 GHz via passive mode-locking of two coupled helical gyro-TWTs. For the first time, it is shown that the operation of such passive mode-locked helical gyro-TWTs in the hard excitation regime is of particular importance to reach the optimal coherency of the generated pulses. This could be of particular interest for some new time-domain DNP-NMR methods.
    Keywords: passive Modenkopplung; Sub-THz; Gyro-TWT; Ultrakurze Pulse; passive mode-locking; sub-THz; gyro-TWT; ultra-short pulses ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
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  • 25
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    Technology and readout for scaling up superconducting nanowire single-photon detectors (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work presents three advances to scale SNSPDs from few-pixel devices to large detector arrays: atomic layer deposition for the fabrication of uniform superconducting niobium nitride films of few-nanometer thickness, a frequency-multiplexing scheme to operate multiple detectors with a reduced number of lines, and the integration of SNSPDs with free-form polymer structures to achieve efficient optical coupling onto the active area of the detectors.
    Keywords: SNSPD; Einzelphotonendetektor; Supraleitung; Atomlagenabscheidung; single-photon detector; superconductivity; thin-film technology; frequency-division multiplexing; optical integration ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
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  • 26
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    Thermische Untersuchungen an Laser-aktivierten Leuchtstoff-Systemen mit dynamischer Leuchtdichteverteilung (2023)
    KIT Scientific Publishing | KIT Scientific Publishing
    Details
    Publication Date: 2024-04-16
    Description: The simulation of ceramic phosphors by means of the diffusion approximation of the radiation transport equation is extended from rotationally symmetrical cases to general, three-dimensional problems. The phosphor is simulated with the diffusion approximation for a temporal and spacial variable laser light source for the first time. Therefore, different laser light sources are being compared to evaluate, which one of the alternatives is best suited for the intended use in an automotive head lamp.
    Keywords: Laser ; Scheinwerfer ; Adaptiv ; Dynamisch ; Diffusionsnäherung ; head light ; adaptive ; dynamic ; diffusion approximation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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  • 27
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    OCM 2023 (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The state of the art in the optical characterization of materials is advancing rapidly. New insights have been gained into the theoretical foundations of this research and exciting developments have been made in practice, driven by new applications and innovative sensor technologies that are constantly evolving.The great success of past conferences proves the necessity of a platform for presentation, discussion and evaluation of the latest research results in this interdisciplinary field.
    Keywords: Charakterisierung von Materialien; Hyperspektral; multispektrale Bildanalyse; Röntgenmethoden; Recycling; characterisation of materials; hyperspectral; multispectral image analysis; X-ray methods; recycling ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 28
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    Spannungseinprägende aktive Filter zur Kompensation der Stromverzerrungen von Netzstromrichtern (2023)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In this thesis, the use of voltage-source active filters for harmonic mitigation of grid-connected power converters is proposed. Based on a modeling of this novel converter configuration, an operating strategy is derived to accomplish this task with low control bandwith, low passive filtering effort, and high efficiency with only a small increase in installed semiconductor power.
    Keywords: Aktive Filter; Stromrichter; Harmonische Oberschwingungen; Kompensation von stromrichterbedingten Oberschwingungen; Filter für Netzstromrichter; Active Filters; Power Converters; Harmonics; Mitigation of Converter-Induced Harmonics; Filters for Grid-Connected Power Converters ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Multiscale Cohort Modeling of Atrial Electrophysiology (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: An early detection and diagnosis of atrial fibrillation sets the course for timely intervention to prevent potentially occurring comorbidities. Electrocardiogram data resulting from electrophysiological cohort modeling and simulation can be a valuable data resource for improving automated atrial fibrillation risk stratification with machine learning techniques and thus, reduces the risk of stroke in affected patients.
    Keywords: Electrophysiologische Modellierung und Simulation; Elektrokardiogramm; Maschinelles Lernen; Vorhofflimmern; Statistisches Shape Modell; electrophysiological modeling and simulation; electrocardiogram; machine learning; atrial fibrillation; statistical shape model ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Light Field Imaging for Deflectometry (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Optical measurement methods are becoming increasingly important for high-precision production of components and quality assurance. The increasing demand can be met by modern imaging systems with advanced optics, such as light field cameras. This work explores their use in the deflectometric measurement of specular surfaces. It presents improvements in phase unwrapping and calibration techniques, enabling high surface reconstruction accuracies using only a single monocular light field camera.
    Keywords: phase unwrapping; camera calibration; light field cameral Phasenentfaltung; Kamerakalibrierung; Lichtfeldkamera; surface reconstruction; deflectometry; Oberflächenrekonstruktion; Deflektometrie ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    High-Precision Automotive Radar Target Simulation (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Radar target simulators (RTSs) deceive a radar under test (RuT) by creating an artificial environment consisting of virtual radar targets. In this work, new techniques are presented that overcome the rasterization deficiency of current RTS systems and enable the generation of virtual targets at arbitrary high-precision positions. This allows for continuous movement of the targets and thus a more credible simulation environment.
    Keywords: automotive radar; Radar target simulation; Automobilradar; Radarzielsimulation; autonomous driving; validation; Validierung; Autonomes Fahren ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Model-based Filtering of Interfering Signals in Ultrasonic Time Delay Estimations (2023)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work presents model-based algorithmic approaches for interference-invariant time delay estimation, which are specifically suited for the estimation of small time delay differences with a necessary resolution well below the sampling time. Therefore, the methods can be applied particularly well for transit-time ultrasonic flow measurements, since the problem of interfering signals is especially prominent in this application.
    Keywords: Laufzeitschätzung; Analytische Wavelet-Pakete; Ultraschalldurchflussmessung; Time Delay Estimation; Analytic Wavelet Packets; Ultrasonic Flow Measurement ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Verbesserungen beim Laserschneiden mit Methoden des maschinellen Lernens (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Although laser cutting of metals is a well-established process, there is considerable potential for improvement with regard to various requirements for the manufacturing industry. First, this potential is identified and then it is shown how improvements could be made using machine learning. For this purpose, a database was generated. It contains the process parameters, RGB images, 3D point clouds and various quality features of almost 4000 cut edges.
    Keywords: cut quality ; convolutional neural network ; machine learning ; stainless steel ; Laser cutting ; Schnittqualität ; Maschinelles Lernen ; Edelstahl ; Laserschneiden ; Faltendes neuronales Netz ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Multi-User Gesture Recognition with Radar Technology (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The aim of this work is the development of a Radar system for consumer applications. It is capable of tracking multiple people in a room and offers a touchless human-machine interface for purposes that range from entertainment to hygiene.
    Keywords: Radar; FMCW; Gestenerkennung; Tracking; gesture recognition; tracking ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Dynamic Incentives for Optimal Control of Competitive Power Systems (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work presents a real-time dynamic pricing framework for future electricity markets. Deduced by first-principles analysis of physical, economic, and communication constraints within the power system, the proposed feedback control mechanism ensures both closed-loop system stability and economic efficiency at any given time. The resulting price signals are able to incentivize competitive market participants to eliminate spatio-temporal shortages in power supply quickly and purposively.
    Keywords: Strommarkt; Dynamische Optimierung; Spieltheorie; Nichtlinearer Reglerentwurf; Mathematische Modellbildung; Electricity Market; Dynamic Optimization; Game Theory; Nonlinear Control; Mathematical Modeling ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Fahrerintentionserkennung zur lichtbasierten Kommunikation mit Fußgängern (2022)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Especially pedestrians rely on the interaction with other road users. The introduction of automated driving systems withdraws this communication from drivers and thus, vehicles need to interact with pedestrians. Therefore, multiple vehicle-pedestrian-communication concepts are evaluated. A driver intention prediction allows pedestrians to learn these newly introduced signals, while driver and vehicle communicate simultaneously.
    Keywords: Fahrzeug-Fußgänger-Kommunikation; Symbole; Farben; Neuronale Netze; Automatisiertes Fahren; Vehicle-Pedestrian-Communication; Symbols; Colors; Neural Networks; Automated Driving ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Entwicklung von Modellen zur speichergestützten Versorgung mit regenerativen Energien in Inselnetzen (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The proposed method for the configuration of renewably powered energy supply systems as isolated grids backed by energy storage technology and based on statistical models shows the economic viability of such a system. The energy supply system was configured by implementing cost models using an optimization software. Validation was achieved through comparison with measurements taken from two different existing energy supply areas.
    Keywords: Windenergie; Solarenergie; Energiespeicher; energieautark; Wasserstoff; energy; renewable; wind; solar; hydrogen ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Chip-scale optical frequency comb sources for terabit communications (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: To keep up with the ever-increasing data transmission speed needs, data center interconnects are scaling up to provide multi-Tbit/s connectivity. These links require a high number of WDM channels, while the associated transceivers should be compact and energy efficient. Scaling the number of channels, however, is still limited by the lack of adequate optical sources. In this book, we investigate novel chip-scale frequency comb generators as multi-wavelength light sources for Tbit/s WDM links.
    Keywords: Frequenzkämme; Modengekoppelte Laserdioden; Mikroresonator Solitonen; kohärente Terabit-Kommunikation; integrierte Photonik; frequency combs; Mode-locked laser diodes; microresonator solitons; coherent terabit communications; integrated photonics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: High-temperature superconductors have distinct advantages compared to conventional conductors. Below their critical temperature, superconductors have immeasurably low ohmic losses. To maintain the superconducting state, superconductors require constant cooling. This study aims at identifying the environmental impacts of the application of superconductors in future grid technologies such as superconducting power cables.
    Keywords: Hochtemperatursupraleiter; Supraleitende Kabel; Ökobilanz; Energieverteilung; High-temperature superconductor; Superconducting cable; Life cycle assessment; Energy transmission ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Adaptive Modulationsverfahren für die schmalbandige Powerline-Kommunikation in Niederspannungsnetzen (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Powerline communications utilize the existing energy distribution network for information transmission. In this work, the low voltage grid is investigated as a transmission channel for frequencies up to 500 kHz. Based on characterizing the channel with regard to its cyclostationary properties, novel adaptive transmission methods are developed. The presented methods are evaluated under realistic channel conditions.
    Keywords: adaptive modulation ; cyclostationary analysis ; channel measurement ; smart grid ; power line communications ; adaptive Modulation ; Kanalmessung ; Smart Grid ; Powerline-Kommunikation (PLC) ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work presents the development and application of high-speed fluorescent thermal imaging for quench analysis in high-temperature superconductors (HTS). Using a fluorescent coating, with a temperature-dependent light emission, temperature changes can be calculated over 2D surfaces. The technique uncovered peculiar transient effects in novel HTS tape architectures and also helped to verify and better understand hot spot development in both insulated and non-insulated, HTS–wound pancake coils.
    Keywords: Supraleiter ; Hochtemperatursupraleiter ; Wärmeaufnahme ; Quench ; superconductivity ; high-temperature superconductors ; thermal imaging ; quench ; normal zone propagation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Neue Methode zur Bestimmung und Beschreibung der taktfrequenten Stromsteigungen in Drehstromsynchronmaschinen (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Knowledge of the cycle-frequency changes in the machine currents is of great advantage for many methods of controlling modern, highly utilized electrical machines. But how can these changes in machine currents be reliably measured during operation? Is the very short time of the individual switching states sufficient? And how can the changes in the currents be described mathematically and interpreted physically? This work provides an answer to these questions.
    Keywords: Synchronmaschine; Regelung; Least-Squares-Schätzer; Modellbildung; Parameteridentifikation; synchronous machine; control; Least-Squares-Estimator; modeling; parameter identification ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Untersuchung der Augensicherheit durch Multi-Pulsbestrahlung für LiDAR-Anwendungen (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: LiDAR (Light detection and ranging) represents one of the key technologies for autonomous driving. For this reason, this work is concerned with the question of eye safety of the laser-based technology. For this purpose, investigations on laser-tissue interactions, laser-induced damage thresholds and mechanisms by multi-pulse trains were performed as well as assessments according to the laser safety standard in Europe (DIN EN 60825) and the USA (ANSI Z.136) were applied.
    Keywords: Laser; Schädigung; Netzhaut; Schwellenwerte; Mehrfachpulse; wiederholte; Laser-Gewebe-Wechselwirkung; Augensicherheit; Lasersicherheit; Fotochemie; Damage; retina; thresholds; multiple pulses; repetitive; Laser-tissue-interaction; eye safety; laser safety; photo-chemical ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Probabilistic Models and Inference for Multi-View People Detection in Overlapping Depth Images (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In this work, the task of wide-area indoor people detection in a network of depth sensors is examined. In particular, we investigate how the redundant and complementary multi-view information, including the temporal context, can be jointly leveraged to improve the detection performance. We recast the problem of multi-view people detection in overlapping depth images as an inverse problem and present a generative probabilistic framework to jointly exploit the temporal multi-view image evidence.
    Keywords: probabilistische Personendetektion ; Netzwerk von 3D-Sensoren ; Tiefenbilder ; inverses Problem ; joint multi-view person detection ; depth sensor indoor surveillance ; mean-field variational inference ; vertical top-view indoor pedestrian detection ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Forum Bildverarbeitung 2022 (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Image processing combines the disciplines of cameras – image-based sensors – with the processing of the sensor data – the images. From this follows the particular attraction of this field. The conference proceedings at hand of the “Image Processing Forum”, which took place on 24.-25.11.2022 in Karlsruhe as a common event of the Karlsruhe Institute of Technology and the Fraunhofer Institute of Optronics, System Technologies and Image Exploitation, contain the articles of the contributions.
    Keywords: Bildverarbeitung ; automatische Sichtprüfung ; maschinelles Lernen ; bildgestützte Messtechnik ; image processing ; automated visual inspection ; machine learning ; image-based measurement technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    A Multiscale In Silico Study to Characterize the Atrial Electrical Activity of Patients With Atrial Fibrillation (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The atrial substrate undergoes electrical and structural remodeling during atrial fibrillation. Detailed multiscale models were used to study the effect of structural remodeling induced at the cellular and tissue levels. Simulated electrograms were used to train a machine-learning algorithm to characterize the substrate. Also, wave propagation direction was tracked from unannotated electrograms. In conclusion, in silico experiments provide insight into electrograms' information of the substrate.
    Keywords: Vorhofflimmern ; Fibrose ; maschinelles Lernen ; Bidomain ; Modellierung des Herzens ; atrial fibrillation ; fibrosis ; machine learning ; bidomain ; cardiac modeling ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Dynamical Modeling and Control of Multiphase Heat Transport Systems Based on Loop Heat Pipes (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Effective heat transport systems in aerospace are based on multiphase loop heat pipes (LHPs). For a precise thermal control of the electronics, electrical heaters are additionally used to control the operating temperature of the LHP. This work focusses on the dynamical modeling and model-based control design for LHP-based heat transport systems. The results of this work can be used for the optimization of current control parameters and the efficient control design for future LHP applications.
    Keywords: Dynamische Modellierung; Wärmetransportsystem; Loop Heat Pipe; Nichtlineare Regelung; dynamical modeling; heat transport system; loop heat pipe; nonlinear control ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Reconstruction from Spatio-Spectrally Coded Multispectral Light Fields (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In this work, spatio-spectrally coded multispectral light fields, as taken by a light field camera with a spectrally coded microlens array, are investigated. For the reconstruction of the coded light fields, two methods, one based on the principles of compressed sensing and one deep learning approach, are developed. Using novel synthetic as well as a real-world datasets, the proposed reconstruction approaches are evaluated in detail.
    Keywords: Computer Vision; Lichtfelder; Multispektrale Bildgebung; Compressed Sensing; Deep Learning; computer vision; light fields; multispectral imaging; compressed sensing; deep learning ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Konvolutionäre neuronale Netze in der industriellen Bildverarbeitung und Robotik (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In the first part of this dissertation, a framework for the design of a CNN for FPGAs is presented, consisting of a preprocessing algorithm, an augmentation technique, a custom quantization scheme and a pruning step of the CNN. The combination of conventional image processing with neural networks is shown in the second part by an example from robotics, where an image-based visual servoing process is successfully conducted for a gripping process of a robot.
    Keywords: künstliche neuronale Netze; Bildverarbeitung; bildbasierte Regelung; FPGA; CNN; image based visual servoing ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Human-Machine Cooperative Decision Making (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The research reported in this thesis focuses on the decision making aspect of human-machine cooperation and reveals new insights from theoretical modeling to experimental evaluations: Two mathematical behavior models of two emancipated cooperation partners in a cooperative decision making process are introduced. The model-based automation designs are experimentally evaluated and thereby demonstrate their benefits compared to state-of-the-art approaches.
    Keywords: Mensch-Maschine-Interaktion; Mensch-Maschine-Kooperation; Mensch-Maschine-Systemdesign; Kooperative Entscheidungsfindung; Entscheidungsfindung; Human-Machine Interaction; Human-Machine Cooperation; Human-Machine System Design; Cooperative Decision Making; Decision Making ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Frequenzkamm-basiertes breitbandiges MIMO-OFDM-Radar (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In recent years, OFDM has become more and more important for radar applications. A disadvantage, however, is the need for high sampling rates, which is exactly the starting point of the frequency comb OFDM radar scheme. With its help, the bandwidth in the radar channel can be enhanced without increasing the sampling rates at the same time. In this way, a high range resolution can be achieved without using fast converters with high sampling rates.
    Keywords: Frequenzkamm ; MIMO ; OFDM ; Radar ; Compressed Sensing ; Frequency Comb ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Forum Bildverarbeitung 2020 (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Image processing plays a key role for fast and contact-free data acquisition in many technical areas, e.g., in quality control or robotics. These conference proceedings of the “Forum Bildverarbeitung”, which took place on 26.-27.11.202 in Karlsruhe as a common event of the Karlsruhe Institute of Technology and the Fraunhofer Institute of Optronics, System Technologies and Image Exploitation, contain the articles of the contributions.
    Keywords: machine learning ; Bildverarbeitung ; automatische Sichtprüfung ; bildgestützte Messtechnik ; maschinelles Lernen ; Image processing ; automated visual inspection ; image based measurement technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Automated Model Generation and Observer Design for Interconnected Systems (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work addresses the automated generation of physical-based models and model-based observers. We develop port-Hamiltonian methods, which for the first time allow a complete and consistent automation of these two processes for a large class of interconnected systems.
    Keywords: Mathematische Modellbildung; Beobachterentwurf; Automatisierung; Port-Hamiltonsche Systeme; Mathematical Modeling; Observer Design; Automation; Port-Hamiltonian Systems ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Detektion und Klassifizierung unterschiedlicher Bedeckungen auf Abschlussscheiben von LiDAR-Sensoren (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: By providing a high resolution at high distances in a broad field of view, LiDAR sensors are a key element in automated driving cars. However, in harsh environmental conditions, particles from rain or dust attach on the outer surface of the sensor and cause a degradation of the overall performance. This work introduces several methods to detect and characterize those particles, realizing the integration of an intelligent and fully automated cleaning system to restore the required performance.
    Keywords: LiDAR; autonomes Fahren; Fahrerassistenzsysteme; Regensensor; Refraktometer; automated driving; driver assistance systems; rain sensor; refractometer ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work aimed at designing, studying and producing the first prototypes of KIDs tailored for fusion plasma polarimetric diagnostics. Diamond was considered for the first time as substrate material for low-temperature superconducting detectors given its unmatched optical, radiation hardness and thermal qualities, properties necessary for working environments potentially saturated with radiation. This work represents a first step toward the optimization and final application of this technology.
    Keywords: Supraleitender Detektor; Diamant; NbN; Kernfusionsplasma; Polarimetrie; Superconducting detector; Diamond; Nuclear Fusion Plasma; Polarimetry ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Kapazitiv gekoppelte Streifenleitungsantennen für Millimeterwellenanwendungen (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Radar is an important part of autonomous driving and allows an appropriate environment recognition. The contribution of this work is a new arrangement of capacitively coupled patches and a holistic view on substrates under different environmental conditions. Thus, an optimized design can meet reliability and bandwidth requirements.
    Keywords: Streifenleitungsantennen Materialeigenschaften ; Umweltbedingungen ; Patch antenna ; material properties ; environmental conditions ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Entwicklung eines lichtbasierten Fahrerassistenzsystems (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In this work describes the development of a light-based driver assistance system through projections on the road. Under realistic conditions it is shown that information can be transmitted to the driver at night by using projections in front of the vehicle: test persons drive more safely through narrow spaces and react earlier to obstacles. A prototype suitable for road use demonstrates the possibility of a near-series implementation of such a headlamp projection system.
    Keywords: Communication ; Road Safety ; New Lighting Systems ; Projection ; Driver Assistance ; Kommunkation ; Verkehrssicherheit ; neuartige Lichtsysteme ; Projektion ; Fahrerassistenz ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Ein Beitrag zum simulationsbasierten Test von Lichtfunktionen (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In this work, two methods are developed and evaluated to integrate and test functional chains of automotive lighting functions on simulation-based test systems. The focus is initially on an approach for the efficient use of light for the display of high contrasts in virtual night driving with a real driver assistance camera. Furthermore, a test method is developed to evaluate pixel-based lighting functions on a hardware-in-the-loop test system based on metrics. In this work, two methods to stimulate and test automotive front lighting functions on simulation-based test benches are developed and evaluated. The first approach deepens the idea to reach necessary high contrasts for virtual night driving with a real driver assistance camera by an efficient use of reflecting light. Furthermore, a test method is shown to test pixel-based lighting functions based on metrics on a hardware-in-the-loop test bench.
    Keywords: Lichtfunktion ; Hardware-in-the-Loop ; Testmethoden ; front ligthing function ; hardware-in-the-loop ; test methods ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Guaranteed Verification of Dynamic Systems (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work introduces a new specification and verification approach for dynamic systems. The introduced approach is able to provide type II error free results by definition, i.e. there are no hidden faults in the verification result. The approach is based on Kaucher interval arithmetic to enclose the measurement in a bounded error sense. The developed methods are proven mathematically to provide a reliable verification for a wide class of safety critical systems.
    Keywords: Verifikation ; Dynamische Systeme ; Intervall Arithmetik ; Diagnose ; Bounded Error ; Verification ; Dynamic Systems ; Interval Arithmetic ; Diagnosis ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Szeneninterpretation unter Verwendung multimodaler Sensorik und Salienzmaßen (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The work deals with aspects of image and video exploitation for monitoring, surveillance and security applications in non-cooperative application situations. The term "non-cooperative" refers to scenarios in which, for example, the recording parameters (backgrounds, lighting conditions, etc.) are not or hardly known. The goal is to detect man-made modifications (artifacts) in natural environments.
    Keywords: Bildauswertung; Videoauswertung; Mustererkennung; Szeneninterpretation; Salienz; Image Exploitation; Video Exploitation; Pattern Recognition; Scene Interpretation; Saliency ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Ein Verfahren zur lexikographischen modellprädiktiven Regelung mit der Anwendung auf eine permanenterregte Synchronmaschine (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In classical approaches for the torque control of Permanent Magnet Synchronous Machines the torque references are converted into current references by static lookup tables which consider power losses. This procedure is dynamically suboptimal, interdependent and strongly machine-dependent. This work addresses the question: How can a Model Predictive Controller be designed to simultaneously optimize the objectives torque reference tracking and power loss minimization?
    Keywords: Modellprädiktive Regelung (MPR) ; Permanentmagneterregte Synchronmaschine (PSM) ; multikriterielle Optimierung ; lexikographische Optimierung ; Model Predictive Control (MPC) ; Permanent Magnet Synchronous Machine (PMSM) ; Multi-Objective Optimization ; Lexicographic Optimization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Modellgestützte Analyse des Stackbetriebs von Festoxidzellen (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In this work, the stack operation of solid oxide cells (SOCs) is analyzed by a simulation model. For this purpose, all coupled physical and chemical sub-processes are represented within a two-dimensional geometry of a single stack level. After parameterization with experimental data and extensive validation, the model is applied to three research issues in SOC technology.
    Keywords: Brennstoffzelle ; Festoxidzelle ; Modellierung ; Simulation ; Fuel Cell ; Solid Oxide Fuel Cell ; modelling ; simulation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Adaptive Dynamic Programming: Solltrajektorienfolgeregelung und Konvergenzbedingungen (2022)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In this work, discrete-time and continuous-time methods that integrate flexible reference trajectory representations into Adaptive Dynamic Programming approaches are presented and analyzed for the first time. Moreover, theoretical conditions on the system state are derived that ensure the persistent excitation property, which is crucial for the convergence of the adaptation. Real-world applications of the presented adaptive optimal trajectory tracking control methods reveal their potential.
    Keywords: Adaptive Dynamic Programming (ADP); Reinforcement Learning (RL); Persistent Excitation (PE); adaptive Optimalregelung; lernende Regler; KI; Adaptive Optimal Control; Learning-Based Control; AI ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Dynamische Rekonfigurationsmethodik für zuverlässige, echtzeitfähige Eingebettete Systeme in Automotive (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Currently, dynamically reconfigurable systems are not used in automotive and there is no process model for their development. The focus of this dissertation is to explore methods and approaches for the development of such systems. One major architectural driver is autonomous driving, another is functional high integration on central computing platforms. Taking these into account, dynamic reconfiguration is classified and explored.
    Keywords: fail-operational ; functional safety ; functional integration ; automotive ; E/E-architecture ; Fehlertoleranz ; Funktionale Sicherheit ; Funktionale Hochintegration ; Automotive ; E/E-Architektur ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Parameter- und Ordnungsidentifikation von fraktionalen Systemen mit einer Anwendung auf eine Lithium-Ionen-Batteriezelle (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Model-based methods are increasingly being used for a safe and efficient operation of battery cells. For modeling battery cells, fractional models which are characterized by non-integer derivative orders have become established due to their electrochemical interpretability. In this work, methods for parameter and derivative order identification of fractional systems are derived without restriction with respect to the excitation at the begin of identification.
    Keywords: Fraktionale Analysis; Lithium-Ionen-Batteriezelle; Parameteridentifikation; Fractional calculus; Lithium-ion battery cell; Parameter identification ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Integrierte planare Antennen für supraleitende Detektorsysteme zur THz-Strahldiagnostik (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: In the THz frequency range, superconducting detectors coupled to planar antennas are well suited for the use in the field of accelerator beam diagnostics. This work studies the coupling efficiency and spectral sensitivity of different antenna designs. Based on the conclusions, two different detector systems for spectroscopic measurements are developed and verified with measurements at accelerator-based light sources.
    Keywords: Supraleitung ; THz-Detektoren ; Terahertzstrahlung ; Planarantennen ; Synchrotronstrahlung ; superconductivity ; terahertz detector ; terahertz radiation ; planar antennas ; synchrotron radiation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Hybride Beamformingsysteme niedriger Komplexität für den Mobilfunk (2022)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: An important method to increase the spectral efficiency of wireless radio communication networks is the use of multiple-input multiple-output communication systems operating in the centimetre and millimetre wave region. How these multiple-input multiple-output communication systems can be realised with as little hardware effort as possible using hybrid beamforming architectures is the subject of this work.
    Keywords: Mobilfunk; Mehrantennensysteme; MIMO; Hybrides Beamforming; Kanalschätzung; mobile communication; hybrid beamforming; channel estimation; channel sounding ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Prozesssicherheit von Laserschneidmaschinen (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The aim of this work is the design and validation of an image-based optimization of laser flatbed cutting machines to avoid tilted parts. Three different approaches for the visual detection of the slats are presented and, based on this, it is discussed to what extent a change in the nesting of the parts to be produced can be used to increase efficiency.
    Keywords: nesting ; industrial image processing ; laser cutting ; Schachtelung ; Industrielle Bildverarbeitung ; Laserschneiden ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Topologie-Optimierung eines radselektiv angesteuerten Fahrzeugs basierend auf einer optimalen Fahrzeugführungsregelung (2022)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The electrification and automation of passenger vehicles promote innovations of the entire vehicle architecture. If wheel-selective steered and driven vehicles are considered, challenges of urban regions can be met. In order to combine these development priorities with the alternative vehicle concept, an optimal suspension is designed for the vehicle concept. The topology optimization of a virtual wheel suspension takes place in interaction with a continuous, optimal dynamics vehicle control.
    Keywords: Topologie-Optimierung. radselektiv angesteuerten Fahrzeug; Fahrzeugführungsregelung; Optimierung; Topology optimization; wheel-selectively controlled vehicle; vehicle guidance control; optimization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work focuses on two topics. The first is the investigation of producing filaments on copper-stabilized coated conductors, with striations made after or before electroplating the tape. The second topic is the applicability of the striations for reducing the AC losses of cables, in particular the CORC® and RACC cables, which are made with high-temperature superconductor (HTS) striated tapes.
    Keywords: AC-Verlustmessung; AC-Magnetisierungsverluste; Hochtemperatursupraleiter; Multifilament-Supraleiter; HTS-Kabel; AC loss measurement; AC magnetization losses; high-temperature superconductors; multifilamentary superconductors; HTS cables ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Waveguide-Based Photonic Sensors: From Devices to Robust Systems (2022)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Integrated photonic sensor systems are miniaturized, mass-producible devices that leverage the mature semiconductor fabrication technology and a well-established ecosystem for photonic circuits. This book aims at a holistic treatment of waveguide-based photonic sensor systems by analyzing photonic waveguide design, photonic circuit design and readout design. Across all levels, a special emphasis is given to system-level performance optimization under realistic environmental conditions.
    Keywords: Optik ; Photonik ; Optoelektronik ; Sensoren ; Wellenleiter ; Optics ; Photonics ; Optoelectronics ; Sensors ; Waveguides ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Lebensdauer von LED-Baugruppen (2022)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work deals with the material degradation of LED package materials and their contribution to degradation of the whole LED device. The occurring failure modes within the LED package are described and predicted by the degradation of the used package materials. Based on these findings approaches for long lifetime LEDs are derived.
    Keywords: LED; Lebensdauer; Temperatur; Materialalterung; Beschleunigte Alterung; light-emitting-diode; lifetime; temperature; material degradation; accelerated testing ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Breitbandige Frequenzweichen für die Parallelisierung von Millimeterwellen-Messtechnik (2021)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work describes the novel use of broadband continuous diplexers that could be integrated into on-wafer probes to parallize millimeter wave on-wafer measurement equipment. A model-based method for the efficient design of diplexers with a large number of adjustable parameters allows the realization of a DC – 110 GHz – 170 GHz diplexer for the first time.
    Keywords: Frequenzweiche ; Diplexer ; Multiplexer ; Filter ; Millimeterwellen-Filter ; diplexer ; multiplexer ; filter ; millimeter-wave filter ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Development of high-temperature superconductor cables for high direct current applications (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: A design process for HTS DC cables was developed for high current applications. Based on the design process, a 35 kA HTS DC cable demonstrator was developed. The superconducting elements of the demonstrator were manufactured and tested individually at 77 K. Afterwards, the demonstrator cable was assembled and tested at 77 K. The assembled demonstrator successfully reached 35 kA at 77 K and self field conditions.
    Keywords: Supraleitung ; Hochtemperatur Supraleitung ; Hochtemperatur Supraleiter Kabel ; Hochtemperatur Supraleiter Stromschiene ; High temperature superconductors ; high temperature superconducting cable ; HTS cable ; high temperature superconducting bus bar ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Optimal Scheduling of Combined Heat and Power Generation Considering Heating Grid Dynamics (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: As the share of renewable generation increases in electric grids, the traditionally heat driven operation of combined heat and power plants (CHPs) reaches its limits. Thermal storage is required for a flexible operation of CHPs. This work proposes three novel methods to use a heating grid as thermal storage by exploiting its thermal dynamics. These include the first approach proving global optimality, a novel linear formulation of grid dynamics and an easily real world applicable approach.
    Keywords: Fernwärme ; thermische Speicher ; variablenabhängige Verzögerung ; optimale Einsatzplanung ; gemischtganzzahlige Optimierung ; district heating ; thermal storage ; variable dependent time delay ; optimal unit commitment ; mixed integer programming ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Optical coherence tomography for characterization of nanocomposite materials (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Major challenges in nanoparticle and nanocomposite development are the control of particle size and shape, and to achieve uniform particle dispersion. In this book, the application of optical coherence tomography (OCT) for nanocomposite and nanoparticle characterization is investigated. Industrial requirements are robustness, small system cost and size, and an open path towards parallelization. We design and investigate silicon photonic integrated OCT systems that comply with these requirements.
    Keywords: Optische Messtechnik ; Optische Kohärenztomographie ; Nanoverbundmaterialien ; Nanopartikel ; Siliziumphotonik ; optical metrology ; optical coherence tomography ; nanocomposite materials ; nanoparticles ; silicon photonics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Bewertungsmodell zur Evaluation hochauflösender, lichtbasierter Fahrerassistenzsysteme (2021)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Modern headlights are able to project any desired symbol directly onto the street. Feasible applications are driver assistance, information or communication with other traffic participants. Besides all the possibilities the risk of distraction can’t be neglected. The present work offers a way to operationalize and quantify this risk. Based on this evaluation a possible homologation can be determined.
    Keywords: Automobillichttechnik ; Fahrerassistenz ; Matrixscheinwerfer ; Physiologie ; Kommunikation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Automatisierte kooperative Transition einer Regelungsaufgabe zwischen Mensch und Maschine am Beispiel des hochautomatisierten Fahrens (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work proposes a concept based on haptic-shared control to assist humans in taking over a task from an automation, such as at the end of highly automated driving. The description of the interaction by time-variant differential games allows a model-based controller design as well as the estimation of the human's current readiness to take over. Several experiments demonstrate more performant and safe transitions with the new approach.
    Keywords: Mensch-Maschine-Interaktion ; Haptic-Shared-Control ; Differentialspiele ; Übernahmebereitschaft ; SAE Level 3 ; human-machine-interaction ; haptic-shared-control ; differential games ; readiness to takeover ; SAE level 3 ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Inverse Dynamic Game Methods for Identification of Cooperative System Behavior (2021)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work addresses inverse dynamic games, which generalize the inverse problem of optimal control, and where the aim is to identify cost functions based on observed optimal trajectories. The identified cost functions can describe individual behavior in cooperative systems, e.g. human behavior in human-machine haptic shared control scenarios.
    Keywords: optimale Regelung ; dynamische Spieltheorie ; kooperative Systeme ; Identifikation ; optimal control ; dynamic game theory ; cooperative systems ; identification ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Verbesserung der Prozesskette zur Herstellung mikrostrukturierter Linsen für automobile Scheinwerfer (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work deals with the design, fabrication and quality control of microstructured lenses for headlamp projection systems. An algorithm is described to structure smooth lens surfaces. The data transfer for manufacturing steel tools for the injection molding process is explained. A reverse engineering process used to qualify the tools is presented.
    Keywords: Scheinwerfer ; Linsen ; Mikrostruktur ; Flächenrückführung ; Headlamp ; Lens ; Microstructure ; Reverse Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Wireless Terahertz Communications: Optoelectronic Devices and Signal Processing (2021)
    KIT Scientific Publishing | KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: Novel THz device concepts and signal processing schemes are introduced and experimentally confirmed. Record-high data rates are achieved with a simple envelope detector at the receiver. Moreover, a THz communication system using an optoelectronic receiver and a photonic local oscillator is shown for the first time, and a new class of devices for THz transmitters and receivers is investigated which enables a monolithic co-integration of THz components with advanced silicon photonic circuits.
    Keywords: Terahertz Kommunikation ; Drahtlosnetzwerke ; 6G ; Optoelektronische Signalverarbeitung ; Silizium Plasmonik ; Terahertz communication ; Wireless networks ; Optoelectronic signal processing ; Silicon plasmonics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    OCM 2021 - Optical Characterization of Materials (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: The state of the art in the optical characterization of materials is advancing rapidly. New insights have been gained into the theoretical foundations of this research and exciting developments have been made in practice, driven by new applications and innovative sensor technologies that are constantly evolving. The great success of past conferences proves the necessity of a platform for presentation, discussion and evaluation of the latest research results in this interdisciplinary field.
    Keywords: Charakterisierung von Materialien ; Hyperspektral ; multispektrale Bildanalyse ; Röntgenmethoden ; Recycling ; characterisation of materials ; hyperspectral ; multispectral image analysis ; X-ray methods ; recycling ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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    Neue Wege beruflicher Qualifizierung zur Stärkung der wirtschaftlichen Prosperität (2021)
    KIT Scientific Publishing
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    Publication Date: 2023-07-06
    Description: not yet available
    Description: Die Studie untersucht in Deutschland bestehende Probleme im Bereich der beruflichen Qualifizierung. Sie zeigt Wege zur Ergänzung und Reform des Berufsbildungssystems auf, u.a. mittels einer beruflichen Grundqualifizierung, die den Übergangssektor verzichtbar macht und die Jugendlichen ohne Warteschleifen in Ausbildung und Erwerbstätigkeit führt. Zum anderen geht es um den Aufbau eines gestuften, modularisierten Bildungsgesamtsystems gem. EU-Vorschlägen zur Realisierung des lebenslangen Lernens.
    Keywords: berufsausbildung ; professional education ; entrepreneurship ; Deutschland ; Europäische Union ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJH Entrepreneurship ; bic Book Industry Communication::Y Children's, Teenage & educational::YQ Educational material::YQV Educational: Business studies & economics
    Language: German
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    Berufliche Bildung in Deutschland (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-03-29
    Description: not yet available
    Description: Die Studie analysiert die berufliche Aus- und Weiterbildung in Deutschland und stellt sie dem Ziel der EU, einen mobilitätsfördernden europäischen Bildungsraum einzurichten, gegenüber. Ein Vergleich mit der beruflichen Bildung in anderen europäischen Staaten ist einbezogen. Die Untersuchung präsentiert Vorschläge zur Überwindung der Schwächen des deutschen Systems, die auch zur Sicherung der dualen Ausbildung in Betrieb und Berufsschule beitragen sollen.
    Keywords: vergleich ; comparative study ; ausbildung ; berufsausbildung ; education ; professional training ; Deutschland ; Erwachsenen- und Weiterbildung ; Europäische Union ; bic Book Industry Communication::J Society & social sciences::JN Education::JNB History of education ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPA Political science & theory ; bic Book Industry Communication::Y Children's, Teenage & educational::YQ Educational material::YQF Educational: Languages other than English ; thema EDItEUR::J Society and Social Sciences::JN Education::JNB History of education ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPA Political science and theory ; thema EDItEUR::Y Children’s, Teenage and Educational::YP Educational material::YPC Educational: Language, literature and literacy::YPCK Educational: Modern (non-native or second) languages
    Language: German
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    Methode zur Messung des Einflusses von Lichtimpulsen auf die visuelle Leistungsfähigkeit (2021)
    KIT Scientific Publishing | KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Due to its dynamic range, the human eye can adapt to a wide variety of light situations within a very short time. If the dynamic range of the eye is insufficient, glare occurs. There is no suitable objective measurement method to describe the effects on visual performance and its course. This was developed and validated as part of this work.
    Keywords: Blendung ; Adaptation ; Licht ; Visuelle Wahrnehmung ; Kurzzeitgedächtnis ; Glare ; Adaption ; Light ; VisualPperception ; Short Time Memory ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    State-of-the-Art of High-Power Gyro-Devices. Update of Experimental Results 2021 (2021)
    KIT Scientific Publishing | KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: This report presents an update of the experimental achievements published in the review “State- of-the-Art of High-Power Gyro-Devices and Free Electron Masers”, Journal of Infrared, Millime-ter, and Terahertz Waves, 41, No. 1, pp 1-140 (2020) related to the development of gyro-devices (Tables 2-34). Emphasis is on high-power gyrotron oscillators for long-pulse or continuous wave (CW) operation and pulsed gyrotrons for any applications.
    Keywords: Gyrotron-Oszillator ; Gyro-RWO ; Gyro-Verstärker ; CARM ; Dielektrische Vakuumfenster ; Gyrotron-Oscillator ; Gyro-BWO ; Gyro-Amplifier ; Dielectric Vacuum Windows ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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  • 87
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    Aufmerksamkeitslenkung mithilfe Innenraumbeleuchtung im Automobil (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-11
    Description: This work deals with the investigation and development of a new light function with the help of interior lighting in automobiles. The interior lighting installed in current vehicles is enhanced by an animation, thereby drawing the driver's attention. The design in manual and automatic driving and the further development of the light function is presented with the help of several test subject studies in the simulator and in the real vehicle.
    Keywords: Innenraumbeleuchtung ; Fahrzeuginnenraum ; Aufmerksamkeitslenkung ; Bewertung ; Fahrzeugbeleuchtung ; Interior lighting ; vehicle interior ; drawing attention ; assessment ; vehicle lighting ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: German
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    Die Dialektik der Globalisierung (2021)
    KIT Scientific Publishing
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    Publication Date: 2024-04-04
    Description: not yet available
    Description: Die Arbeit beschäftigt sich mit den soziologischen Herausforderungen der Globalisierung und ihrem Einfluss auf die Sozialwissenschaften. Dabei wird vor allem nach den Parametern des Raums und der Identität im Prozess der Globalisierung gefragt. Innerhalb eines deutschen Kontextes wird untersucht, wodurch Migrationsprozesse konstituiert sind, welche Probleme und Orientierungsunsicherheiten sie nach sich ziehen können und wie mit kultureller Differenz umgegangen wird. Es werden zudem Vorschläge zu möglichen Veränderungsprozessen in der Kulturpolitik und Kulturarbeit gemacht.
    Keywords: cultural studies ; globalization ; globalisierung ; kulturwissenschaft ; migration ; kulturpolitik ; Deutschland ; Identität ; thema EDItEUR::N History and Archaeology::NH History::NHT History: specific events and topics::NHTB Social and cultural history ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GT Interdisciplinary studies::GTQ Globalization ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPA Political science and theory
    Language: German
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    Pushing the KIT 2 MW Coaxial-Cavity Short-Pulse Gyrotron Towards a DEMO Relevant Design (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Magnetic fusion is one approach to generate thermonuclear fusion power in an environmental friendly way. The Electron Cyclotron Resonance Heating is considered as the major concept for startup, heating and control of the fusion plasma. Megawatt-class gyrotrons generate the required microwave power. This work focuses on advanced key components and technologies for a DEMO relevant 2 MW gyrotron. One major focus is on the development of advanced Magnetron Injection Guns. Another focus is on the red.
    Keywords: Gyrotron ; Koaxialer Resonator ; Fusion ; ECRH ; Coaxial Resonator ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering
    Language: English
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