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Adjustable Parameter-based Multi-objective Fault Estimation Observer Design for Continuous-time/Discrete-time Dynamic Systems

Ke Zhang, Vincent Cocquempot, and Bin Jiang*
International Journal of Control, Automation, and Systems, vol. 15, no. 3, pp.1077-1088, 2017

Abstract : "This paper addresses an adjustable parameter (AP)-based multi-objective fault estimation design for continuous-time/discrete-time dynamic systems. First, a fault estimation observer with AP is constructed to on-line identify the size of occurred faults. The fault estimation design not only possesses a wider application compared with adaptive observers, but also uses the current output information to enhance fault estimation performance. Then a multi-objective approach is proposed to determine the gain matrices of fault estimation observer. Moreover, fault estimation results with the slack-variable technique are obtained to further reduce the conservatism. Finally, simulation results of an aircraft application are presented to illustrate the effectiveness of our contribution."

Keyword : Fault diagnosis, fault estimation, multi-objective design.

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