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Weiyong Yu1,Qi Chen1,Hongbing Zhou2,Xiang An1,Qiang Liu1.[en_title][J].Control Theory and Technology,2025,23(2):321~340.[Copy]
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Output feedback control of nonlinear time-delay systems with multiple uncertainties via an event-triggered strategy
WeiyongYu1,QiChen1,HongbingZhou2,XiangAn1,QiangLiu1
0
(1 Academy of Artificial Intelligence, Beijing Institute of Petrochemical Technology, Beijing, 102617, China;2 School of Mathematics and Statistics, Nanyang Normal University, Nanyang, 473061, Henan, China)
摘要:
This paper discusses the design of event-triggered output-feedback controller for a class of nonlinear time-delay systems with multiple uncertainties. In sharp contrast to previous works, the considered systems possess two important characteristics: (i) The uncertain nonlinear terms meet the linearly unmeasurable-states dependent growth with the growth rate being an unknown function of the input and output. (ii) There exist input matching uncertainty and unknown measurement sensitivity. By introducing a single dynamic gain and employing a cleverly devised event-triggering mechanism (ETM), we design a new gain-based event-triggered output-feedback controller, which globally regulates all states of the considered systems and maintains global boundedness of the closed-loop system. Furthermore, the estimation of input matching uncertainty achieves convergence towards its actual value, and Zeno behavior does not happen. Two simulation examples including a practical one show that the proposed approach is effective.
关键词:  Dynamic gain · Event-triggered control · Input matching uncertainty · Nonlinear time-delay systems · Output feedback · Unknown measurement sensitivity
DOI:https://doi.org/10.1007/s11768-025-00250-0
基金项目:This work was supported by the fund of Beijing Municipal Commission of Education (KM202210017001 and 22019821001), and the Natural Science Foundation of Henan Province (222300420253).
Output feedback control of nonlinear time-delay systems with multiple uncertainties via an event-triggered strategy
Weiyong Yu1,Qi Chen1,Hongbing Zhou2,Xiang An1,Qiang Liu1
(1 Academy of Artificial Intelligence, Beijing Institute of Petrochemical Technology, Beijing, 102617, China;2 School of Mathematics and Statistics, Nanyang Normal University, Nanyang, 473061, Henan, China)
Abstract:
This paper discusses the design of event-triggered output-feedback controller for a class of nonlinear time-delay systems with multiple uncertainties. In sharp contrast to previous works, the considered systems possess two important characteristics: (i) The uncertain nonlinear terms meet the linearly unmeasurable-states dependent growth with the growth rate being an unknown function of the input and output. (ii) There exist input matching uncertainty and unknown measurement sensitivity. By introducing a single dynamic gain and employing a cleverly devised event-triggering mechanism (ETM), we design a new gain-based event-triggered output-feedback controller, which globally regulates all states of the considered systems and maintains global boundedness of the closed-loop system. Furthermore, the estimation of input matching uncertainty achieves convergence towards its actual value, and Zeno behavior does not happen. Two simulation examples including a practical one show that the proposed approach is effective.
Key words:  Dynamic gain · Event-triggered control · Input matching uncertainty · Nonlinear time-delay systems · Output feedback · Unknown measurement sensitivity