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		Limin WANG,Cheng SHAO.[en_title][J].Control Theory and Technology,2009,7(2):219~223.[Copy]

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LiminWANG,ChengSHAO
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Received:September 10, 2007Revised:April 03, 2008

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Observer-based adaptive control of uncertain time-delay switched systems with stuck actuator faults

Limin WANG, Cheng SHAO

(Institute of Advanced Control Technology, Dalian University of Technology, Dalian Liaoning 116024, China)

Abstract:

This paper concerns the observer-based adaptive control problem of uncertain time-delay switched systems with stuck actuator faults. Under the case where the original controller cannot stabilize the faulty system, multiple adaptive controllers are designed and a suitable switching logic is incorporated to ensure the closed-loop system stability and state tracking. New delay-independent sufficient conditions for asymptotic stability are obtained in terms of linear matrix inequalities based on piecewise Lyapunov stability theory. On the other hand, adaptive laws for on-line updating of some of the controller parameters are also designed to compensate the effect of stuck failures. Finally, simulation results for reference [1] model show that the design is feasible and efficient.

Key words: Observer-based adaptive control Tuck actuator faults Delay-independent Uncertain time-delay switched systems