Fuzzy Fault-tolerant Control System Design for Multi-indices Constraints: Fuzzy Discrete-time Systems Case
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摘要: 研究了模糊离散系统在同时具有极点指标、H∞指标和方差指标约束下的容错控制器设计问题. 利用分解和等价原理, 将非线性系统多指标约束下的可靠控制问题, 转换为一系列线性极限子系统多性能指标约束下的容错控制器设计问题; 提出了一种新的多指标约束容错控制系统设计方法, 详细分析了各相容指标的取值范围; 并给出了相容指标约束下的容错控制器设计步骤.Abstract: This paper addresses the problem of fuzzy fault-tolerant controller design for fuzzy discrete-time systems with pole index, steady variance index and H∞ constraints. Based on the decomposition and equivalence principle, the reliable control problem for fuzzy nonlinear systems is decomposed into a set of extreme sub-systems fault-tolerant control problems. A new fault-tolerant control design method is proposed, and the range of consistent indices is analyzed in detail. Finally, the design steps of fault-tolerant controller with multi preformance indeces constraints are provided.
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Key words:
- Fault-tolerant control /
- actuator failures /
- fuzzy systems /
- T-S model /
- consistency
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