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  • Articles  (161,284)
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  • Articles  (161,284)
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  • 2015-2019  (80,361)
  • 2005-2009  (36,216)
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  • 1980-1984  (44,707)
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  • 1
    Electronic Resource
    Electronic Resource
    High-speed recursive digital filter realization (1984)
    Springer
    Circuits, systems and signal processing 3 (1984), S. 267-294 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Pipeline techniques have been successfully applied to speeding up processing in both general- and special-purpose digital computers. Application of these techniques to nonrecursive (FIR) filters has been suggested and is quite straightforward. Application to recursive (IIR) filters has not previously been shown. In this paper, the technique for applying pipeline techniques to recursive filters is shown and the advantages and disadvantages of the technique are discussed. Using these techniques, recursive digital filters operating at hitherto impossibly high rates can be designed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599077
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  • 2
    Electronic Resource
    Electronic Resource
    A Hybrid system for the reconstruction of a smooth function from its samples (1984)
    Springer
    Circuits, systems and signal processing 3 (1984), S. 295-314 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The long-standing problem of reconstructing a function from its samples is considered again. Assuming a sequence of oversampled values, a set of appropriate idealized reconstruction filters can be defined, which do not suffer from instability or slow convergence. The realization — a cascade of a nonrecursive digital filter, D/A-converter, and a fixed/analog smoothing filter — demands the design of the digital filter for the increase of the sampling rate. The design of this nonrecursive filter is the purpose of this paper. Approximations in the frequency as well as in the time domain are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599078
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  • 3
    Electronic Resource
    Electronic Resource
    Linear feedback system design (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 35-44 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Via fractional representation methods, this paper tries to clarify the role of various conditions used in the feedback system design and stability with respect to the well-posedness of the system, the existence of a solution for stability and design, and the parameterization of the set of complete solutions. The design criterion for stable feedback system design can be used for filters design, as shown in Section 5. Systems to be considered in this paper include the linear time-varying case and results can easily be extended to the case where systems do not have the same number of inputs and outputs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598142
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  • 4
    Electronic Resource
    Electronic Resource
    On the existence of self-excited oscillations in systems with discontinuous elements (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 57-76 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Conditions are established which ensure the existence (or non-existence) of limit cycles in feedback systems containing discontinuous elements or elements with hysteresis. The results are applied to a specific example.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598144
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  • 5
    Electronic Resource
    Electronic Resource
    Consistent initial conditions for singular nonlinear systems (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 45-55 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Conclusion A necessary condition for consistent initial conditions for singular nonlinear systems has been discussed. It is shown that for linear systems or systems of index less than three these conditions are equivlaent to previously reported results. However, for nonlinear systems of index greater than two these new conditions correct those previously reported. One consequence is that Euler's method may fail to estimate solutions for some semi-state equations. R. W. Newcomb's provision of an earlier version of [14] and subsequent correspondence is gratefully acknowledged.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598143
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  • 6
    Electronic Resource
    Electronic Resource
    Scattering and admittance matrices of SAW transducers (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 161-177 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Thep-plane scattering and admittance matrices of SAW transducers consisting ofn equal sections modeled through the hybrid equivalent circuit are explicitly calculated. The results are specialized to the in-line and crossed-field models, and the technique is developed for unequal section transducers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599156
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  • 7
    Electronic Resource
    Electronic Resource
    On the properties of linear spectral transformations for 2-dimensional digital filters (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 203-211 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A set of eight linear spectral transformations which can be used in the design of two-dimensional digital filters is studied from a group-theoretic point of view. Several properties of the transformations, some of them known and some of them new, are deduced and are then applied in the implementation of 2-D digital filters. It is shown that trade-offs exist which can be used to reduce either the amount of memory required for the programming or the amount of data manipulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599159
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  • 8
    Electronic Resource
    Electronic Resource
    A new negative resistance oscillator model (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 213-238 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A physically justifiable mathematical model is proposed for a class of current-controlled, negative resistance oscillators having terminal characteristics which are poorly represented by the van der Pol, Scott, and Ceschia-Zecchin equations. Such resonators are typified by the monolithic emitter-coupled astable multivibrator (ECAM). A unique, three-parameter equation, based on the inverse hyperbolic tangent, is matched to the ECAM voltage-current curve. Using the method of Kryloff and Bogoliuboff, the transient and steady-state behavior of the ECAM is derived for oscillation with single-mode and double-mode LCR networks under quasi-linear conditions. An expression for the time of amplitude build-up and decay is derived. A phase plane is constructed for the double-mode case, yielding a system apparently free of simultaneous modes. The validity of the model is experimentally verified for quartz-controlled ECAM devices. The analysis results are extendable ton resonant modes and may be generalized to voltage-controlled devices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599160
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  • 9
    Electronic Resource
    Electronic Resource
    High-resolution spectral analysis using multiple-interval adaptive prediction (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 421-443 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The problem of adaptively detecting two sinusoids corrupted by noise is considered, with emphasis on resolution properties. The approach is to form a spectral estimate from the coefficients of a Δ-step-ahead adaptive predictor. A theoretical analysis reveals that attention to the choice of the prediction horizon Δ gives a distinct improvement in the spectral estimate and in the resolution of the signals. The theoretical results are illustrated with numerical examples. Comparisons with previously suggested techniques are also made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599163
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  • 10
    Electronic Resource
    Electronic Resource
    Power system transient stability analysis: Formulation as nearly Hamiltonian systems (1984)
    Springer
    Circuits, systems and signal processing 3 (1984), S. 105-122 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In this paper we formulate power systems as nonlinear nearly Hamiltonian systems. Using the invariance principle for ordinary differential equations, necessary and sufficient conditions for asymptotic stability are established and a new method of estimating the domain of attraction of the stable equilibrium point is developed. The present results constitute a novel approach to stability analysis and involve the following three steps: a. Given a system with dissipation, the stability of its equilibrium is ascertained by determining the stability of the associated conservative system. b. Attractivity of the stable equilibrium of the entire system (with dissipation) is determined from the system topology. c. An estimate of the domain of attraction of the asymptotically stable equilibrium is obtained by making use of results obtained in (a) and (b). The stability criterion developed in this paper sheds new light on the mechanism of instability in power systems and it provides analytical verification to the concept of the potential-energy boundary surface (PEBS). The PEBS is a hypersurface which makes up a part of the boundary of the domain of attraction of the stable equilibrium in a power system. The existence and properties of the PEBS have thus far been deduced primarily via simulations and heuristic methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01600064
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