控制理论(社会学)
反推
非线性系统
控制器(灌溉)
计算机科学
跟踪误差
李雅普诺夫函数
国家观察员
自适应控制
模糊逻辑
残余物
观察员(物理)
模糊控制系统
数学
控制(管理)
算法
人工智能
物理
生物
量子力学
农学
作者
Wei Wei,Tianliang Zhang,Weihai Zhang
出处
期刊:IEEE Transactions on Fuzzy Systems
[Institute of Electrical and Electronics Engineers]
日期:2023-05-01
卷期号:31 (5): 1580-1592
被引量:4
标识
DOI:10.1109/tfuzz.2022.3206503
摘要
This article focuses on the event-triggered finite-time adaptive practical tracking control for uncertain nonstrict-feedback nonlinear systems in the presence of time-varying state constraints and external disturbances. First, a disturbance observer is introduced to identify the compounded disturbances, which are made up of external disturbances and fuzzy approximation errors. Second, the asymmetric time-varying barrier Lyapunov functions are constructed to guarantee that all the state constraints are not violated. Meanwhile, the finite-time command filters are embedded in the backstepping-based controller design to overcome the explosion of complexity problems. Third, the event-triggered adaptive controller is developed to reduce the communication burden based on the relative threshold algorithm. The proposed control strategy can guarantee that the closed-loop system is semiglobally practically finite-time stable, and the tracking error converges to a small residual set in a finite time. Finally, a simulation example is included to illustrate the effectiveness of the theoretical results.
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