磁悬浮转子不平衡振动控制研究  

Research on Unbalance Vibration Control for Magnetic Suspension Rotor

作　　者：李雪 李峰岩 胡叨福 

机构地区：[1]珠海格力电器股份有限公司,珠海519070 [2]广东省高速节能电机系统重点实验室,珠海519070

出　　处：《日用电器》2023年第7期125-129,共5页ELECTRICAL APPLIANCES

摘　　要：磁悬浮系统中残余不平衡量的存在会产生与转速平方成正比的不平衡扰动力,干扰力会使转子的悬浮精度变差,降低系统的稳定性。针对该问题,首先,以磁悬浮转子为研究对象对不平衡振动控制机理进行分析;其次,在控制系统中采用最小均方差自适应算法实现转子同频信号的消除,实现不平衡振动控制,并基于对数幅相频率特性稳定判据对系统整体控制结构进行稳定性分析;最后,基于磁悬浮轴承数学仿真模型和实验平台对方法进行验证,结果表明该方法能够有效滤除转子同频分量,消除同频控制电流,减小转子振动位移。The existence of residual unbalance in the magnetic suspension system will lead to generation of the unbalanced disturbance force proportional to the square of the rotating speed,and the disturbance force will make the suspension precision of the rotor worse and weaken the stability of the system.Aiming at this problem,firstly,the unbalance vibration control mechanism is analyzed by taking the magnetic bearing rotor as the research object.Secondly,the least mean square(LMS)adaptive algorithm eliminating the rotor co-frequency signal is used in the control system to realize the unbalance vibration control,and analyze the stability of the overall control structure of the system based on the stability criterion of phase frequency characteristics.Finally,the method is verified based on the magnetic bearing mathematical simulation model and experimental platform,and the results show that it can effectively filter out the rotor co-frequency component,eliminate the co-frequency control current and reduce the rotor vibration displacement.

关 键 词：磁悬浮轴承 不平衡 LMS算法 闭环稳定性 

分 类 号：TH133.3[机械工程—机械制造及自动化] TH113.1