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Fault detection of networked control systems with packet based periodic communication. (English) Zbl 1193.93103

Summary: Fault detection of Networked Control Systems (NCS) with communication constraints is discussed in this paper. A so-called packet-based periodic communication strategy is proposed and two kinds of optimal observer-based residual generators are designed. One residual generator is designed based on the lifted model of NCS, which generates residual signals every communication period. The other works at a faster rate, i.e. it generates residual signals every sampling period and is more suitable for prompt fault detection. Comparison with traditional periodic-communication-sequence-based scheduling strategy reveals superiority of this new communication strategy. Simulation results are also provided to illustrate effectiveness of the proposed method.

MSC:

93B52 Feedback control
94C12 Fault detection; testing in circuits and networks
90B18 Communication networks in operations research
Full Text: DOI

References:

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