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“慶祝建校四十年”系列學術活動之三元名家論壇:Saturated boundary feedback stabilization for a non-uniform Timoshenko beam with disturbances and uncertainties
作者:     供圖:     供圖:     日期:2024-11-11     來源:    

講座主題:Saturated boundary feedback stabilization for a non-uniform Timoshenko beam with disturbances and uncertainties

專家姓名:韓忠杰

工作單位:天津大學

講座時間:2024年11月12日08:40-09:20

講座地點:數學院大會議室341

主辦單位:煙臺大學數學與信息科學學院

內容摘要:

This talk is concerned with the saturated feedback stabilization for a nonuniform Timoshenko beam with boundary control matched unknown internal uncertainties and external disturbances. An infinite-dimensional disturbance estimator without involving high gain is designed to estimate the total disturbances. By compensating/canceling the total disturbances in the feedback loop and combining with a collocated stabilizing controller without uncertainty, we propose an unsaturated feedback control to exponentially stabilize the system. Under the boundedness assumption on the magnitudes of the total disturbances, we further propose a saturated control to asymptotically stabilize the system. In addition to the actuator amplitude saturation, the control energy consumption is also reduced sharply. The well-posedness and stability of the closed-loop system are proved mainly by the semigroup theories and the frequency-domain method. Some numerical simulations are carried out to validate the effectiveness of the proposed control strategy.

主講人介紹:

韓忠杰,天津大學數學學院教授,博士生導師,主要從事分布參數系統控制理論方面的研究。主要成果發表在SIAM Journal on Control and Optimization, SIAM Journal on Applied Mathematics, IEEE Transactions on Automatic Control, Journal of Differential Equations, ESAIM - Control Optimisation and Calculus of Variations等控制理論及應用數學相關學術期刊,主持國家自然科學基金項目多項。

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