Decentralized Fuzzy Fault Estimation Observer Design for Discrete-Time Nonlinear Interconnected Systems

被引:1
作者
Koo, Geun Bum [1 ]
机构
[1] Kongju Natl Univ, Div Elect Elect & Control Engn, Cheonan 31080, South Korea
基金
新加坡国家研究基金会;
关键词
fault estimation; discrete-time nonlinear interconnected system; uncertain interconnections; decentralized fuzzy observer; Takagi-Sugeno fuzzy model; linear matrix inequality; LARGE-SCALE SYSTEMS; STABILIZATION; FILTER;
D O I
10.3390/electronics13091763
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, a fault estimation technique is proposed for discrete-time nonlinear interconnected systems with uncertain interconnections. To achieve the fault estimation, the decentralized fuzzy observer is adopted based on the Takagi-Sugeno fuzzy model. Based on the estimation error model with the subsystems of the interconnected system and its decentralized fuzzy observer, the fault estimation condition with H infinity performance is presented. The main idea of this paper is that a novel inequality condition for H infinity performance is used, and the sufficient condition is presented to guarantee the good fault estimation performance. Also, the decentralized fuzzy observer design condition for the fault estimation is converted into linear matrix inequality formats. Finally, a simulation example is provided, and the effectiveness of the proposed fault estimation technique is verified by comparison of the fault estimation performance.
引用
收藏
页数:20
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