期刊
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
卷 30, 期 4, 页码 1564-1581出版社
WILEY
DOI: 10.1002/rnc.4835
关键词
fault detection; H-infinity performance; Lyapunov function; piecewise linear systems
资金
- National Natural Science Foundation of China [61621004, 61420106016]
- Research Fund of State Key Laboratory of Synthetical Automation for Process Industries [2018ZCX03]
This paper studies the problem of asynchronous fault detection (FD) observer design for piecewise linear systems. Considering that the states of the FD observer and the system may stay at different regions of the state space, asynchronous FD observers are designed at different instants to cope with the challenges incurred by exogenous disturbances and fault signals. By employing new piecewise Lyapunov functions that depend on the different regions where the states are located, it is proved that the proposed asynchronous FD observers ensure the stability and H-infinity performance of the error systems. Three examples are given to show that the new design scheme provides better FD results than the existing design methods.
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