Actuator fault estimation and accommodation for switched systems with time delay: Discrete-time case |
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| Affiliation: | 1. College of Automation, Harbin University of Science and Technology, Harbin, 150080, PR China;2. Shanghai Key Laboratory of Power Station Automation Technology, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, PR China;3. College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, PR China;1. Shandong Provincial Key Laboratory of Network Based Intelligent Computing, University of Jinan, Jinan, Shandong, PR China;2. College of Information Science and Engineering, Ocean University of China, Tsingtao, Shandong, PR China |
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| Abstract: | This paper investigates the problems of actuator fault estimation and accommodation for discrete-time switched systems with state delay. By using reduced-order observer method and switched Lyapunov function technique, a fault estimation algorithm is achieved for the discrete-time switched system with actuator fault and state delay. Then based on the obtained online fault estimation information, a switched dynamic output feedback controller is employed to compensate for the effect of faults by stabilizing the closed-loop systems. Finally, an example is proposed to illustrate the obtained results. |
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| Keywords: | Discrete-time switched system Fault estimation Reduced-order observer Output feedback controller |
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