磁悬浮开关磁阻电机悬浮系统变结构鲁棒控制  

Variable structure robust control for suspending systems of bearingless switched reluctance motor

作　　者：刘羡飞[1] 孙玉坤[1] 王德明[2] 张亮[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]南通大学电气工程学院,江苏南通226007

出　　处：《系统工程与电子技术》2007年第10期1704-1708,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(60174052);江苏省自然科学基金(BK2001090);江苏省高校自然科学基金(05KJD350167);南通市青年学术带头人进修计划(Z5003)资助课题

摘　　要：磁悬浮开关磁阻电机转矩和悬浮系统之间的非线性耦合是悬浮系统稳定可靠控制的最大障碍,为此提出了一种将主绕组电流摄动视为悬浮系统不确定性因素的思想。首先采用反馈精确线性化方法对径向两自由度进行解耦和线性化,然后以解耦后的两个带有主绕组电流摄动不确定性项的线性子系统为对象,利用变结构鲁棒控制对参数摄动及外部扰动的不敏感特性,设计了变结构鲁棒控制律,以消除转矩调节对悬浮系统控制的不利影响,从而实现悬浮系统的稳定控制。仿真结果表明,悬浮系统在变结构鲁棒控制作用下,输出位移对主绕组电流摄动具有很好的不变性,且系统对外力扰动具有较强的鲁棒性。The feedback exact linearization method is applied to decouple and linearize radial position of bearingless switched reluctance motor on two degrees of freedom. To eliminate the bad effect of touque adjustment on the decoupled suspending systems, an idea of taking the variation of main winding＇s current as an uncertain factor of suspending systems is presented. Accordingly, a variable structure robust control law is designed for the decoupled suspending system with uncertain terms of the variation of main winding＇s current. The simulation results show that the output displacement of suspending control systems designed is invariable to the variation of main winding＇s current and the system has strong robust performance to force disturbance.

关 键 词：磁悬浮 磁阻电机 线性化方法 变结构控制 鲁棒控制 

分 类 号：TM301.2[电气工程—电机]