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Fault Estimation and Accommodation for Switched Systems with Time-varying Delay

Dongsheng Du, Bin Jiang*, and Peng Shi
International Journal of Control, Automation, and Systems, vol. 9, no. 3, pp.442-451, 2011

Abstract : This paper considers the problem of fault estimation and accommodation for a class of switched systems with time-varying delay. An adaptive fault estimation algorithm is proposed to estimate the fault, moreover, constant or time-varying fault can be estimated. Meanwhile, a delay-dependent criteria is obtained with the purpose of reducing the conservatism of the fault estimation algorithm design. On the basis of fault estimation, an observer-based fault tolerant controller is designed to guarantee the stability of the closed-loop system. Additionally, simulation results are presented to il-lustrate the efficiency of the proposed results.

Keyword : Accommodation, fault estimation, switched systems, time-varying delay.

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