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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/89141

    Title: H∞ output tracking fuzzy control for nonlinear systems with time-varying delay
    Other Titles: 其時變延遲非線性系統之H∞輸出追蹤模糊控制
    Authors: Liu, Peter;Chiang, Tung-Sheng
    Contributors: 淡江大學電機工程學系
    Keywords: Time-delay systems;T–S fuzzy;Virtual desired variables;Linear matrix inequalities
    Date: 2012-05-01
    Issue Date: 2013-05-21 15:42:33 (UTC+8)
    Publisher: Amsterdam: Elsevier BV
    Abstract: This paper proposes an observer-based output tracking control via virtual desired reference model for a class of nonlinear systems with time-varying delay and disturbance. First, the Takagi–Sugeno fuzzy model represents the nonlinear system with time-varying delay and disturbance. Then we design an observer to estimate immeasurable states and controller to drive the error between estimated state and virtual desired variables (VDVs) to zero such that the overall control output tracking system has H∞ control performance. Using Lyapunov–Krasovskii functional, we derive sufficient conditions for stability. The advantages of the proposed output control system are (i) systematic approach to derive VDVs for controller design; (ii) relaxes need for real reference model; (iii) drops need for information of equilibrium; (iv) relaxed condition is provided via three-step procedure to find observer and controller gain. We carry out simulation using a continuous stirred tank reactor system where the effectiveness of the proposed controller is demonstrated by satisfactory numerical results.
    Relation: Applied Soft Computing 12(9), pp.2963-2972
    DOI: 10.1016/j.asoc.2012.04.025
    Appears in Collections:[電機工程學系暨研究所] 期刊論文

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