Design of Nonlinear Decoupling Controller for Double-electromagnet Suspension System

作     者：LIU De-Sheng LI Jie ZHANG Kun LIU De-Sheng;LI Jie;ZHANG Kun

作者机构：College of Mechatronics Engineering and Automation National University of Defense Technology Changsha 410073 

出 版 物：《自动化学报》 (Acta Automatica Sinica)

年 卷 期：2006年第32卷第3期

页      面：321-328页

核心收录：

学科分类：08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Supported by National Natural Science Foundation of P. R. China (60404003)the Natural Science Foundation of Hunan Province (03JJY3108)Fok Ying-Tong Education Foundation (94028) 

主　　题：双倍电磁体 解耦 悬浮控制器 反馈控制器 

摘      要：Aiming at the coupling characteristic between the two groups of electromagnets embedded in the module of the maglev train, a nonlinear decoupling controller is designed. The module is modeled as a double-electromagnet system, and based on some reasonable assumptions its nonlinear mathematical model, a MIMO coupling system, is derived. To realize the linearization and decoupling from the input to the output, the model is linearized exactly by means of feedback linearization, and an equivalent linear decoupling model is obtained. Based on the linear model, a nonlinear suspension controller is designed using state feedback. Simulations and experiments show that the controller can effectually solve the coupling problem in double-electromagnet suspension system.