误差积分对磁悬浮系统稳定性的影响  

Influence to Stability of Maglev System Brought by Error Integral

作　　者：张晓[1] 刘恒坤[1] 

机构地区：[1]国防科技大学磁悬浮技术研究中心,长沙410073

出　　处：《系统仿真学报》2011年第5期961-964,共4页Journal of System Simulation

基　　金：国家自然科学基金(60874015)

摘　　要：状态反馈控制是磁悬浮控制系统中的一种常见控制方法,在采用这种控制方法时,需要引入误差积分以消除稳态误差。分析了误差积分对系统性能的影响,得出了误差积分会减小控制参数稳定区域的结论;指出了误差积分的引入会引起系统特征根的突变,继而引起系统动态特性产生突变的结论,为避免系统性能突变并保证系统的稳定性,求出了特定情况下积分误差反馈系数的范围;最后仿真结果对上述结论进行了验证。The state feedback control is a familiar method which is wieldy applied to magnetic suspension system.The error integral was introduced to the control to eliminate the static error when the feedback method was applied to the system.The influence brought by the error integral to the system performance was analyzed.The conclusion is that the integral will bring the mutation of the system＇s characteristic roots and dynamic performance.The range of the error integral feedback coefficient in which the system was stable and performance of the system did not mutate was found.The conclusions were proved through simulation at last.

关 键 词：磁悬浮系统 误差积分 稳定性 状态反馈控制 

分 类 号：U237[交通运输工程—道路与铁道工程] U266.4[机械工程—车辆工程]