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Robust Asymptotic Estimation of Sensor Faults for Continuous-time Interconnected Systems

Jingping Xia, Bin Jiang*, and Ke Zhang
International Journal of Control, Automation, and Systems, vol. 17, no. 12, pp.3170-3178, 2019

Abstract : This paper concerns the problem of robust asymptotic estimation of sensor faults for continuous-time interconnected systems. Firstly, an augmented singular interconnected system is constructed, which is equivalent to the original interconnected system. Then for the ingular system, the distributed fault estimation observer based on the correlation between subsystems is proposed to achieve a robust asymptotic estimation of sensor faults. Furthermore, the online fault estimator is designed to estimate unknown sensor faults in real time. Finally, the simulation results verify the feasibility and effectiveness of the proposed design techniques.

Keyword : Fault diagnosis, fault estimation, interconnected systems, sensor faults

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