Fault-Tolerant Control for a Class of Nonlinear Systems Based on Adaptive Observer

Abstract: This paper addresses a fault-tolerant control scheme for a class of nonlinear systems based on the adaptive fault diagnosis method. Considering the nonlinearity of systems satisfies the Lipschitzcondition, the adaptive law is designed according to the Lyapunov theory, and the proposed augmented adaptive observer can not only endure the nonlinearity but also broaden the application scopes of general adaptive observer. Then, a fault- tolerant controller is designed to compensate for the effect of the faults and guarantees the closed-loop system stable. Finally, a numeral example is presented to illustrate the effectiveness and feasibility of the addressed approach.

Keywords: Nonlinear system, Fault detection and diagnosis, Fault-tolerant control, Adaptive observer, Adaptive law

Author: Zhang Dong-wen, Wang Qiao-ling

Journal Code: jptkomputergg160095

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