期刊
IEEE TRANSACTIONS ON FUZZY SYSTEMS
卷 26, 期 2, 页码 805-816出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TFUZZ.2017.2690627
关键词
Diagnostic observer; fault-detection (FD) systems; fault sensitivity; fuzzy Lyapunov functions
资金
- National Natural Science Foundation of China [61603033, 61633001, 61522306, 61210012]
- Beijing Natural Science Foundation [4174096]
- Postdoc Science Foundation of China [2016M600924]
This paper deals with a real-time-weighted observer-based fault-detection (FD) scheme for Takagi-Sugeno (T-S) fuzzy systems. The essential idea is to develop a weighted diagnostic observer-based FD system to optimize the worst case robustness and fault sensitivity simultaneously by using the information provided by each local system. To achieve an early detection of potential fault, the robustness issue is investigated in the L-infinity/L-2 observer-based FD context. Meanwhile, the L- fault sensitivity condition is addressed to optimize the fault detectability. Using fuzzy Lyapunov functions, sufficient conditions on the FD system design are studied. Two examples are given in the end to show the efficiency of the proposed results.
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