This paper presents a new approach of actuator fault estimation (FE) for discrete-time switched systems against unknown disturbance. The proposed FE approach uses a new switching observer methodology, which allows to obtain fast and exact fault information. Sufficient conditions are achieved by using multiple Lyapunov functional. These conditions are manipulated in a simple way in order to obtain a new linear matrix inequality (LMI) with slack variables and observer gains matrices. Finally, two illustrative examples are performed to prove the effectiveness of the proposed method.
Actuator Fault Estimation Based on Proportional Integral Observer for Discrete-Time Switched Systems
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT,AND CONTROL. Manuscript received February 19, 2018; final manuscript received September 28, 2018; published online November 22, 2018. Assoc. Editor: Yunjun Xu.
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Benzaouia, A., and Telbissi, K. (November 22, 2018). "Actuator Fault Estimation Based on Proportional Integral Observer for Discrete-Time Switched Systems." ASME. J. Dyn. Sys., Meas., Control. March 2019; 141(3): 031011. https://doi.org/10.1115/1.4041639
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