Title :
Towards robustness of H∞ suboptimal state feedback
Author_Institution :
Dept. of Manuf. Autom., Technol. Univ., Moscow, Russia
fDate :
Aug. 31 1999-Sept. 3 1999
Abstract :
In this paper we consider frequency properties and robustness of H∞ suboptimal state feedback. It is shown that in spite of large gain and phase margins (at the plant input), the closed-loop H∞ suboptimal system may not be robust in the sense that small parameter variations in the plant and/or the controller matrices may lead to instability. This situation is illustrated by a simple example.
Keywords :
H∞ control; Riccati equations; closed loop systems; frequency-domain analysis; robust control; state feedback; H∞ suboptimal state feedback; Riccati equation; closed-loop H∞ suboptimal system; frequency properties; large gain; phase margins; stability margins; Closed loop systems; Linear matrix inequalities; Regulators; Riccati equations; Robustness; State feedback; H∞ suboptimal control; Parameter variations; Riccati equation; Robustness; Stability margins;
Conference_Titel :
Control Conference (ECC), 1999 European
Conference_Location :
Karlsruhe
Print_ISBN :
978-3-9524173-5-5
