Electrostatic Suspension System Nonlinear Character Analysis and Its Internal Model Control

作     者：糜长军 郭晋峰 金志华 田蔚风 

作者机构：Inst. of Navigation and Control Dept. of Instrument Science and Eng. Shanghai Jiaotong Univ. 

基　　金：Weaponry Advanced FundItem of China(No51409030101JW03) 

出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)

年 卷 期：2007年第12卷第3期

页      码：377-382页

摘      要：Nonlinearity is an important characteristic in electrostatic suspension system (ESS). This paper concludes the nonlinear parts in ESS, which generally result from the relationships between rotor displacement and capacitance, rotor displacement and electrostatic force, and control voltage and electrostatic force. In terms of the nonlinearities, a new control method with modified internal model control (IMC) was proposed to analyze the ESS, deduce the transfer function of the modified IMC controller in ESS, and simulate this new application in ESS. Comparing with proportional integral derivative (PID) control, IMC has only a parameter, and has better performance. As a result, IMC solves nonlinearity error well in ESS with only one uncertain parameter, and performs well when the rotor has large displacement.

主 题 词：导航设备 悬浮液 模型控制 非线形设计 

学科分类：08[工学] 081105[081105] 0811[工学-水利类] 

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