ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
This paper presents a two-channel digital control system for the hydraulic stand MZPK100 designed for fatigue tests of cruciform specimens under biaxial tension-compression. In thepast, the fatigue test stand MZPK 100 was provided with unreliable analog control power cubicles.Application of the computer with an analog and digital input-output signal path board,Matlab/Simulink software and a new control box equipped with the necessary electronic subassemblies(responsible for proper switching of the hydraulic supplier, command electrovalves,conditioning of signals from sensors and so on) enables replacement of the old analog system by anew two-channel digital control system. Nowadays, it is easy to modify the control system todifferent requirements of material tests because the hardware (electronic) solutions have beensimplified, and the software has a friendly Simulink interface. Such an approach allows for theimplementation of different control algorithms, e.g. PID, adaptive, and fuzzy logic etc. Moreover,this paper presents a description of how to keep the center of the specimen static under a controlledforce that is being applied by four independent actuators
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.113.13.pdf
