Asynchronous fault detection and robust control for switched systems with state reset strategy

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-...

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Bibliographic Details
Published inJournal of the Franklin Institute Vol. 355; no. 1; pp. 250 - 272
Main Authors Zhong, Guang-Xin, Yang, Guang-Hong
Format Journal Article
LanguageEnglish
Published Elmsford Elsevier Ltd 01.01.2018
Elsevier Science Ltd
Subjects
Control equipment
Control systems
Controllers
Error detection
Fault detection
Liapunov functions
Robust control
Robustness (mathematics)
Sensitivity
Strategy
Switching
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Summary: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.
ISSN:0016-0032
1879-2693
0016-0032
DOI:10.1016/j.jfranklin.2017.11.021