Title :
A simultaneous observer-based controller
Author :
Fonte, C. ; Zasadzinski, M. ; Darouach, M.
Author_Institution :
Univ. Henri Poincare, Cosnes et Romain, France
Abstract :
In this note, a parametrization of all functional observer-based controllers that stabilize a given plant is proposed. This parametrization is used to design simultaneous functional observer-based controllers for two plants and to derive some sufficient conditions and some necessary conditions for the existence of simultaneous functional observer-based controllers. These sufficient conditions express the existence of simultaneous functional observer-based controllers in function of the unstable zero structure of the difference of the two plants. The necessary conditions set that the existence of simultaneous functional observer-based controllers depends on two Q-parameters. Then, it is shown that the existence conditions of a simultaneous functional observer-based controller are not exactly a simple concatenation of the existence conditions of a simultaneous controller and the existence conditions of a simultaneous functional observer. Finally, a design procedure to compute simultaneous functional observer-based controllers is presented
Keywords :
control system synthesis; observers; poles and zeros; stability; Q-parameters; simultaneous functional observer-based controller design; unstable zero structure; Automatic control; Strain control; Sufficient conditions; Vectors;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.703266