Asynchronous fault detection and robust control for switched systems with state reset strategy |
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| Authors: | Guang-Xin Zhong Guang-Hong Yang |
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| Institution: | 1. School of Automation Engineering, Northeast Electric Power University, Jilin, 132012, China;2. College of Information Science and Engineering, Northeastern University, Shenyang, 110819, China;3. State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang, 110819, China |
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| Abstract: | This paper is concerned with the problem of simultaneous fault detection and control of switched systems under the asynchronous switching. A switching law and fault detection/control units called fault detector/controllers are designed to guarantee the fault sensitivity and robustness of the closed-loop systems. Different from the existing results, a state reset strategy is introduced in the process of fault detection/control, which reduces the conservatism caused by the jump of multiple Lyapunov functions at switching instants. Further, the proposed strategy is only dependent the state of fault detector/controllers, which is available when the system state is invalid. Finally, by using a performance gain transform technique, non-convex fault sensitivity conditions are converted into the convex error attenuation ones. This further improves the fault detection effect. A numerical example is given to demonstrate the effectiveness of the proposed results. |
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| Keywords: | Corresponding author at: School of Automation Engineering Northeast Electric Power University Jilin 132012 China |
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