控制理论(社会学)
估计员
非线性系统
控制器(灌溉)
执行机构
有界函数
容错
趋同(经济学)
自适应控制
计算机科学
自适应估计器
断层(地质)
控制(管理)
数学
分布式计算
人工智能
生物
物理
统计
数学分析
地质学
经济
地震学
量子力学
经济增长
农学
作者
Huijin Fan,Xinpeng Fang,Wei Wang,Jiangshuai Huang,Lei Liu
出处
期刊:Automatica
[Elsevier]
日期:2023-05-01
卷期号:151: 110954-110954
被引量:5
标识
DOI:10.1016/j.automatica.2023.110954
摘要
In this paper, the fault-tolerant control (FTC) problem for a class of nonlinear systems with uncertain parameters and unknown actuator failures is studied. The considered failure number of times is not limited to be finite, and the input-to-state stable assumption is no longer needed. An adaptive FTC scheme is proposed based on event-triggered strategy. A set of event-triggering conditions are designed for not only the controller but also the parameter estimators, with which the parameter estimator-to-controller and controller-to-actuator channels are both event-triggered simultaneously. It is proved that, with our proposed scheme, all the closed-loop signals are globally uniformly bounded, and the system output converges into a compact set which can be made small by appropriately adjusting the design parameters. Also, the Zeno behavior is proved to be excluded. Besides, a modified FTC scheme is designed for the case with finite number of failures, which ensures the asymptotic convergence of system states. Finally, a robot manipulator example is employed to illustrate the effectiveness of the proposed schemes.
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