Fault detection for networked systems subject to access constraints and packet dropouts

查看全文 作　　者：Xiongbo Wan Huajing Fang Sheng [1]Fu

机构地区：[1]Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》索引2011年第22卷第1期,共8页

基　　金：supported by the National Natural Science Foundation of China (60574088;60874053) 摘　　要：This paper addresses the problem of fault detection(FD) for networked systems with access constraints and packet dropouts.Two independent Markov chains are used to describe the sequences of channels which are available for communication at an instant and the packet dropout process,respectively.Performance indexes H∞ and H_ are introduced to describe the robustness of residual against external disturbances and sensitivity of residual to faults,respectively.By using a mode-dependent fault detection filter(FDF) as residual generator,the addressed FD problem is converted into an auxiliary filter design problem with the above index constraints.A sufficient condition for the existence of the FDF is derived in terms of certain linear matrix inequalities(LMIs).When these LMIs are feasible,the explicit expression of the desired FDF can also be characterized.A numerical example is exploited to show the usefulness of the proposed results. 关键词：fault detection(FD) networked control system(NCS) access constraints packet dropouts linear matrix inequality(LMI).

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Fault detection for networked systems subject to access constraints and packet dropouts

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