Title :
H∞ servo-controller design for plants having poles on the jω axis
Author :
Mita, T. ; Hirata, M. ; Villas, S.
Author_Institution :
Dept. of Control Syst. Eng., Tokyo Inst. of Technol., Japan
Abstract :
When given real plants have poles on the jω axis in two-block mixed sensitivity problems, they become zeros of G12 or G21 in generalized plants, and the corresponding H∞ control problems become nonstandard. To get around this problem on zeros, the authors introduce a loop transforming technique and the extended H∞ servo control theory previously proposed by authors and derive a full parametrization of H∞ controllers. The results give a design method of servo systems such that the jω poles of plants or/and the designed controllers play a role of an internal model
Keywords :
H∞ control; control system synthesis; poles and zeros; sensitivity; servomechanisms; H∞ servo-controller design; jω axis poles; loop transforming technique; two-block mixed sensitivity problems; zeros; Closed loop systems; Control systems; H infinity control; Poles and zeros; Stability; Transfer functions; Uncertainty;
Conference_Titel :
Decision and Control, 1995., Proceedings of the 34th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-2685-7
DOI :
10.1109/CDC.1995.478494
