• ISA transactions · Nov 2015

    Disturbance observer based fault estimation and dynamic output feedback fault tolerant control for fuzzy systems with local nonlinear models.

    • Jian Han, Huaguang Zhang, Yingchun Wang, and Yang Liu.
    • College of Information Science and Engineering, Northeastern University, Shenyang 110004, China.
    • ISA Trans. 2015 Nov 1; 59: 114-24.

    AbstractThis paper addresses the problems of fault estimation (FE) and fault tolerant control (FTC) for fuzzy systems with local nonlinear models, external disturbances, sensor and actuator faults, simultaneously. Disturbance observer (DO) and FE observer are designed, simultaneously. Compared with the existing results, the proposed observer is with a wider application range. Using the estimation information, a novel fuzzy dynamic output feedback fault tolerant controller (DOFFTC) is designed. The controller can be used for the fuzzy systems with unmeasurable local nonlinear models, mismatched input disturbances, and measurement output affecting by sensor faults and disturbances. At last, the simulation shows the effectiveness of the proposed methods.Copyright © 2015 ISA. Published by Elsevier Ltd. All rights reserved.

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