Title :
Anti-windup controller synthesis via linear parameter-varying control design methods
Author :
Wu, Fen ; Grigoriadis, Karolos M. ; Packard, Andy
Author_Institution :
Dynacs Eng. Co. Inc., Houston, TX, USA
Abstract :
We provide a novel, systematic anti-windup control synthesis approach for systems with actuator saturation using a linear parameter-varying (LPV) design framework. The closed-loop induced L2 gain control problem is considered. Different from previous two-step design schemes, the proposed approach directly utilizes saturation indicator parameters to schedule accordingly the parameter varying controller. Hence, the synthesis conditions are formulated in terms of linear matrix inequalities (LMIs) that can be solved very efficiently. The resulting gain-scheduled controller is nonlinear in general and would lead to graceful performance degradation in the presence of actuator saturation nonlinearities
Keywords :
closed loop systems; control nonlinearities; control system synthesis; nonlinear control systems; actuator saturation; anti-windup controller synthesis; closed-loop induced L2 gain control problem; gain-scheduled controller; graceful performance degradation; linear matrix inequalities; linear parameter-varying control design methods; saturation nonlinearities; two-step design schemes; Control design; Control nonlinearities; Control system synthesis; Control systems; Degradation; Gain control; Hydraulic actuators; Nonlinear control systems; Strain control; Windup;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.694688