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    Title: Observer-Based T–S Fuzzy Control for a Class of General Nonaffine Nonlinear Systems Using Generalized Projection-Update Laws
    Authors: Wang, Wei-Yen;Chien, Yi-Hsing;Lee, Tsu-Tian
    Contributors: 淡江大學電機工程學系
    Keywords: Nonaffine nonlinear system;Takagi–Sugeno (T–S) fuzzy model;projection-update law
    Date: 2011-06-01
    Issue Date: 2014-09-24 09:43:46 (UTC+8)
    Publisher: Piscataway: Institute of Electrical and Electronics Engineers
    Abstract: In this paper, we propose an online observer-based Takagi-Sugeno (T-S) fuzzy-output tracking-control technique and an improved generalized projection-update law for a class of general nonaffine nonlinear systems with unknown functions and external disturbances. First, a T-S fuzzy model and a mean-value estimation technique are adopted to approximate a so-called virtual linearized system (VLS) of a real system and avoiding a high-order derivative problem, respectively. Second, a novel design concept combining the T-S fuzzy controller, observer, and tuning algorithm by neural networks is proposed to improve system performance. After that, we also use improved generalized projection-update laws, which prevent parameters drift and confine adjustable parameters to the specified regions, to tune adjustable parameters. As a result, both the stability guarantee based on strictly positive real (SPR) Lyapunov theory and Barbalat's lemma and the better tracking performance are concluded. To illustrate the effectiveness of the proposed T-S fuzzy controller and observer-design methodology, numerical simulation results are given in this paper.
    Relation: IEEE Transactions on Fuzzy Systems 19(3), pp.493-504
    DOI: 10.1109/TFUZZ.2011.2114888
    Appears in Collections:[電機工程學系暨研究所] 期刊論文

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