基于滑模观测器的磁轴承转子不平衡扰动控制  

Unbalance Vibration Control for Magnetic Bearing Rotor Based on Sliding Mode Observer

作　　者：赵萍[1] 孙冬梅[1] 陈红燕[1] 

机构地区：[1]南京工业大学自动化与电气学院,南京211800

出　　处：《轴承》2015年第1期12-15,共4页Bearing

基　　金：国家自然科学基金项目(51277092);江苏省科技支撑计划项目(BE2011188);江苏省人事厅博士后科研计划项目(1201012C)

摘　　要：针对风力发电机磁轴承转子不平衡扰动的问题,建立了系统动力学模型。基于滑模变结构理论,设计了滑模扰动观测器,对磁轴承转子系统扰动量进行观测,将观测器的输出作为补偿信号引入磁轴承转子系统,对系统的不平衡扰动力和力矩进行补偿。仿真结果表明,设计的滑模变结构扰动观测器能够准确快速地观测不平衡扰动,通过补偿减少了转子不平衡扰动。Aiming at the unbalance vibration caused by magnetic bearing rotor for wind turbine, the system dynamics model is established. Based on the theory of sliding mode variable structure, a sliding mode disturbance observer is designed to observe the disturbance quantity of magnetic bearing rotor system. The output of the observer is introduced into the magnetic bearing rotor system as a compensation signal to compensate unbalance vibration disturbance and torque of system. The simulation results show that the sliding mode variable structure disturbance observer can observe unbalance disturbance quickly and accurately, and the unbalance disturbance of rotor is reduced through compensation.

关 键 词：磁轴承 滑模观测器 扰动控制 

分 类 号：TH133.3[机械工程—机械制造及自动化] TP271[自动化与计算机技术—检测技术与自动化装置]