重复控制在磁悬浮高速转子振动抑制中的应用  

Research on Vibration Suppression for Magnetic Suspension Motor Based on Repetitive Control Method

作　　者：韩邦成[1,2] 刘洋[1,2] 郑世强[1,2] 

机构地区：[1]北京航空航天大学惯性技术重点实验室,北京100191 [2]新型惯性仪表与导航系统技术国防重点学科实验室,北京100191

出　　处：《振动．测试与诊断》2015年第3期486-492,591,共7页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(61203203);国家重大科学仪器设备开发专项基金资助项目(2012YQ040235)

摘　　要：针对高速磁悬浮电机磁轴承的不平衡振动问题,分析了磁悬浮电机转子不平衡振动的周期性特性,建立了磁轴承不平衡力模型,提出了一种用于抑制高速磁悬浮电机磁轴承不平衡振动的插入式重复控制器,对闭环系统的稳定性、稳态性能和干扰抑制能力进行了分析,并进行了仿真和实验验证。在4kW磁轴承电机上进行的实验结果表明,该重复控制器有效地抑制了转子的不平衡振动,在10kr/min的转速下,转子x,y向位移峰峰值分别减小了33%和37%,转频处转子x,y向位移振动峰值分别减小了42.1%和45.4%,有效提高了磁悬浮轴承的控制精度和稳定性。Aiming at the suppression of unbalance vibration in rotors suspended by magnetic bearings,a plug-in repetitive controller is presented.The model of the unbalance vibration is proposed with emphasis on its periodicity.The stability and the abilities of error tracking and disturbance elimination are analyzed with the repetitive controller.The experiment is conducted with a 4kW magnetic suspension motor at the rotating speed of 10kr/min.The rotor′s peak-to-peak position is reduced by 33%in the x-direction and37%in the y-direction,and the maximum amplitude of vibration at the rotating frequency is reduced by42.1%in the x-direction and 45.4%in the y-direction.The results demonstrate that the repetitive controller has good effect on the suppression of the unbalance vibration,and the control precision and stability of the magnetic bearing system are effectively improved.

关 键 词：磁悬浮电机 磁轴承 不平衡振动 重复控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TH133[自动化与计算机技术—控制科学与工程]