磁力轴承-转子-基础系统的耦合动力学分析  

Analysis of Coupled Dynamics of Magnetic Bearing-Rotor-Base System

作　　者：张薇薇[1] 胡业发[1] 

机构地区：[1]武汉理工大学机电工程学院,武汉430070

出　　处：《机械制造》2009年第2期4-7,共4页Machinery

基　　金：国家自然科学基金资助项目(编号:50675163);国防基础研究基金资助项目(编号:A420060160)

摘　　要：研究了基础运动对磁力轴承转子系统动力学特性的影响,结合转子运动方程和系统控制器的电学微分方程,分析了陀螺效应、传感器与磁轴承非共点安装对系统动力学性能的影响,建立了磁悬浮轴承-转子-基础系统的机电耦合动力学模型,应用所建模型对5自由度磁悬浮转子系统进行了动力学性能分析。结果表明,基础的支承刚度对转子的摆动频率及临界转速影响显著,该模型适用于5自由度磁悬浮轴承-转子-基础系统的动力学性能研究。The influence of the base motion on the dynamic characteristics of an active magnetic bearings-rotor system is studied. With the help of the motion equation of the rotor and the electrical differentiation equations of the system controller, the gyroscopic effect and the influence of non-concurrent point mounting of the sensors and magnetic bearings on the dynamic characteristics of the system are analyzed and a coupled dynamic model of magnetic suspended bearing-rotor-base system is built. The dynamic characteristics of an actual 5-DOF AMB rotor system is analyzed with aid of this model. The result shows that the stiffness of the base has great influence on the whirl frequency and critical speed of the rotor and the model is applicable for study of the dynamic characteristics of the 5-DOF magnetic suspended bearing-rotor-base system.

关 键 词：磁悬浮轴承-转子系统 基础运动 耦合动力学 涡动频率 

分 类 号：TH133.3[机械工程—机械制造及自动化]