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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/43485


    Title: 模糊系統控制-多凸面法-波雅定理;Fuzzy Systems Control-Convexity-P’olya
    Authors: 高振舜;Jen-Shuen Gao
    Contributors: 機械工程研究所
    Keywords: 寬鬆變數(Relaxed variables);多凸面(multi-convexity);Takagi-Sugeno (T-S) 模糊模型;線性矩陣不等式 (LMI);波雅定理(P´;olya theorem);平方和SOS(Sum Of Squares);Copositive relaxations;Takagi-Sugeno fuzzy model;Prameter-dependent Lyapunov function;Linear matrix inequality;Sum of Squares
    Date: 2010-06-22
    Issue Date: 2010-12-08 13:42:12 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本論文是以狀態回饋控制(state feedback control)研究受控體(fuzzy systems) 所代表的模糊系統穩定與否問題,以及應用波雅定理((P´olya theorem) 於穩定性檢測條件上,以得到較為寬鬆的檢測條件。 內容方面本論文將分為兩部分來進行討論,第一部份為利用多凸面法(multi-convexity),推導滿足Lyapunov穩定性的檢測條件,並加入波雅定理(P´olya theorem),藉由此方法得到更大的解空間,並利用LMI (Linear Matrix Inequality)求解,第二部份為利用平方和SOS (Sum Of Squares)求解。 第一部分為利用多凸面(multi-convexity)的概念,降低一般普遍存於共同P矩陣(common P)論述上的保守性,本論文是建立在非共同$P$解(non-common P)的論述上,並且應用波雅定理(P´olya theorem)加上寬鬆變數(Relaxed variables),因此具有更寬鬆的求解條件。 第二部份,近年來應用於求解的工具,大多以LMI(Linear Matrix Inequality)求解,但其複雜度會隨著矩陣大小以及LMI個數而增大,而利用SOSTOOLS求解則能大大降低其複雜度並且不用額外的寬鬆變數(Relaxed variables)。 Based on parameter-dependent Lyapunov function, we study asymptotically copositive relaxation families with certificate of convergence to the existence of parameter-dependent Lyapunov function, releasing the conservatism that commonly exists in the quadratic stability approaches.
    Appears in Collections:[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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