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

机译:基于局部非线性模型的模糊系统基于扰动观测器的故障估计和动态输出反馈容错控制

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摘要

This 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. (C) 2015 ISA. Published by Elsevier Ltd. All rights reserved.
机译:本文针对具有局部非线性模型,外部干扰,传感器和执行器故障的模糊系统,同时解决了故障估计(FE)和容错控制(FTC)问题。同时设计了干扰观测器(DO)和FE观测器。与现有结果相比,提出的观测器具有更广阔的应用范围。利用估计信息,设计了一种新型的模糊动态输出反馈容错控制器(DOFFTC)。该控制器可用于具有无法测量的局部非线性模型,失配输入干扰以及受传感器故障和干扰影响的测量输出的模糊系统。仿真结果表明了所提方法的有效性。 (C)2015 ISA。由Elsevier Ltd.出版。保留所有权利。

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