Robust fault detection filter design for networked control systems with delay distribution characterisation

Yong Zhang and Huajing Fang

International Journal of Systems Science, 2011, vol. 42, issue 10, 1661-1668

Abstract: In this article, robust fault detection (RFD) is investigated for networked control systems with delay distribution characterisation. By utilising an observer-based fault detection filter as a residual generator, the RFD of networked control systems with non-uniformly distributed network‐induced time-varying delay is formulated as an H∞ model-matching problem. Delay-interval-dependent and delay-interval-occurrence-rate-dependent sufficient conditions are obtained by employing the Lyapunov–Krasovskii functional approach. Especially, the robust fault detection filters guarantee strong robustness from residual signal to disturbance as well as high sensitivity to faults. A numerical example is given to illustrate the effectiveness of the proposed design techniques.

Date: 2011
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DOI: 10.1080/00207720903576795

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