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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 |
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(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) |
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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 |
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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). |
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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 |