Adaptive fault-tolerant control for a class of nonlinear systems with time delay

Authors:
D. Ye;G. H. Yang
Affiliations:
College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, 110004, China;College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, 110004, China,Key Laboratory of Integrated Automation of Process Industry, Northeastern University, Min ...
Venue:
International Journal of Systems Science
Year:
2008

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Abstract

This article deals with the problem of adaptive fault-tolerant control against unknown actuator faults for a class of nonlinear time delay systems with disturbance. The actuator faults are types of loss of effectiveness. The aim is to find an adaptive fault tolerant controller, such that the system is not only stabilized, but also the state vectors of normal and fault cases with disturbance track that of the normal case without disturbance, which has the designed performance. A new delay-dependent adaptive law is proposed to design the adaptive reconfigurable controller, which is excited to offset the effect of faults and disturbance automatically. Numerical and simulation results are provided to demonstrate the effectiveness of the proposed controller.