Nonfragile Fault-Tolerant Fuzzy Observer-Based Controller Design for Nonlinear Systems
Nonfragile Fault-Tolerant Fuzzy Observer-Based Controller Design for Nonlinear Systems
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DOI：
10.1109/tfuzz.2016.2540070
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发表时间：
2016-12
影响因子：
11.9
通讯作者：
Xiaohang Li;F. Zhu;A. Chakrabarty;S. Żak
中科院分区：
文献类型：
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作者：
Xiaohang Li;F. Zhu;A. Chakrabarty;S. Żak
研究了一类不确定非线性系统的Takagi-Sugeno模糊模型的执行器故障估计与容错控制问题。提出了一种非脆弱比例积分（PI）观测器的设计方法，用于估计非线性系统的状态，重构突发性（步长故障）和初始故障信号。随后，构造了一个非脆弱容错控制器，该控制器由PI观测器通知。以线性矩阵不等式的形式给出了PI观测器和容错控制器存在的充分条件。通过两个算例对所提出的容错控制体系结构进行了验证。
The problem of actuator fault estimation and fault-tolerant control for a class of uncertain nonlinear systems using Takagi-Sugeno fuzzy models is investigated. A design procedure for nonfragile proportional-integral (PI) observer is proposed to estimate the states of the nonlinear system and reconstruct the abrupt (modeled as step-like faults) and incipient fault signals. Subsequently, a nonfragile fault-tolerant controller is constructed, which is informed by the PI observer. Sufficient conditions of the existence of the PI observer and the fault-tolerant controller are provided in the form of linear matrix inequalities. The proposed fault-tolerant control architecture is tested on two numerical examples.