Decentralised fault detection of large-scale systems with limited network communications

被引:21
|
作者
Li, W. [1 ,2 ]
Gui, W. H. [3 ]
Xie, Y. F. [3 ]
Ding, S. X. [2 ]
机构
[1] China Univ Min & Technol, Sch Mech Engn, Xuzhou 221116, Peoples R China
[2] Univ Duisburg Essen, Inst Automat Control & Complex Syst, D-47057 Duisburg, Germany
[3] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Peoples R China
来源
IET CONTROL THEORY AND APPLICATIONS | 2010年 / 4卷 / 09期
关键词
DESIGN;
D O I
10.1049/iet-cta.2008.0604
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
An optimal decentralised fault detection (FD) system is proposed for a class of discrete-time large-scale systems, where limited information exchange among subsystems is enabled with communication networks. Such an FD system consists of two parts in each subsystem: a residual generator (RG) and a residual evaluator. By taking the advantages of network communications, the RGs are designed to match a proper reference model in a stochastic sense such that a best trade-off between the robustness against disturbances and the sensitivity to faults can be achieved. In each residual evaluator, a norm-based evaluation function is selected for evaluating residual signals and a corresponding threshold is calculated for detecting the occurrences of faults. All the solutions are presented in the form of linear matrix inequalities. Finally, a numerical example is given to illustrate the results and the improvement achieved by applying network communications.
引用
收藏
页码:1867 / 1876
页数:10
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