Title :
Unstructured uncertainty and graphic robust control system design
Author :
Glaria, B.J. ; Rojas, R.R. ; Salgado, B.M.
Author_Institution :
Dept. of Electron. Eng., Univ. Tecnica Federico Santa Maria, Valparaiso
Abstract :
Preliminary results regarding robust control design in the presence of unstructured uncertainty are presented. The basic aim is to develop graphic tools to carry out computer aided design for this type of uncertain system. The core of the tool is a modified Nichols chart, where the magnitudes of both sensitivity and complementary sensitivity are depicted. It is shown that unstructured plant uncertainty can be very easily represented and manipulated on this diagram. It is also shown that Horowitz´s design philosophy can be easily implemented using simple templates extracted from the chart itself
Keywords :
control system CAD; feedback; frequency response; frequency-domain synthesis; sensitivity analysis; stability; Horowitz´s design philosophy; complementary sensitivity; computer aided design; feedback system; frequency response; frequency-domain methods; graphic tools; modified Nichols chart; robust control system design; sensitivity; templates; unstructured uncertainty; Adaptive control; Computer graphics; Design engineering; Design methodology; Frequency domain analysis; Programmable control; Robust control; Transfer functions; Uncertain systems; Uncertainty;
Conference_Titel :
Decision and Control, 1992., Proceedings of the 31st IEEE Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0872-7
DOI :
10.1109/CDC.1992.371463
