Title :
Anti-windup design using auxiliary input for constrained linear systems
Author :
Dehghan, S. Masood ; Ong, Chong Jin ; Chen, Peter C Y
Author_Institution :
Dept. of Mech. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
Stability and performance degradation in feedback control systems under saturation can be overcome by anti-windup techniques. In this paper, a new anti-windup approach called ldquoauxiliary input anti-winduprdquo is proposed, which incorporates an auxiliary input into the controller of the system. Finding the maximal output admissible set of the augmented closed-loop system, the control effort is then obtained from a quadratic optimization problem subjected to linear inequality constraints. Performance and effectiveness of the proposed anti-windup approach, as compared with other methods, is illustrated with simulation examples. Experimental results show that the introduced auxiliary input (AI) anti-windup scheme improves the performance of the system.
Keywords :
closed loop systems; constraint handling; control system synthesis; feedback; linear systems; quadratic programming; antiwindup design; augmented closed-loop system; auxiliary input; constrained linear systems; feedback control systems; linear inequality constraints; quadratic optimization problem; Actuators; Constraint optimization; Control systems; Degradation; Feedback control; Linear systems; Mechanical engineering; Nonlinear control systems; Stability; Windup;
Conference_Titel :
Systems, Man and Cybernetics, 2008. SMC 2008. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2383-5
Electronic_ISBN :
1062-922X
DOI :
10.1109/ICSMC.2008.4811793