Design and implementation of a fault tolerant controller for EMS systems

被引：26
|
作者：
Sung, HK
Lee, SH
Bien, Z
机构：
[1] Korea Inst Mach & Mat, New Transport Syst Grp, Taejon 305343, South Korea
[2] Korea Aerosp Res Ins, Satellite Div, Taejon 305333, South Korea
[3] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea
来源：
MECHATRONICS | 2005年 / 15卷 / 10期
关键词：
EMS systems; fault tolerant control; H-infinity control; linear matrix inequality (LMI); fault detection and isolation (FDI);
D O I：
10.1016/j.mechatronics.2005.04.003
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Conventional EMS (electromagnetic suspension) systems are susceptible to instability problems, and could even break down upon failures of the air-gap sensor or the accelerometer. Therefore, in order to improve EMS performance, a fault tolerant controller and a fault detection and isolation (FDI) algorithm are presented in this work. The fault tolerant controller is an extended version of the linear fault tolerant controller designed for known actuator or sensor failures, and it adopts the LMI-based H-infinity control for a class of nonlinear systems. The fault detection algorithm employs fuzzy inference. The merits of the proposed control scheme have been verified by the experiments with a single-axis two-magnet suspension system subjected to failures of the actuator or the sensors. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1253 / 1272
页数：20
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