移动载体上电磁轴承-转子系统空间位置的动力学建模与分析  

Dynamic modeling and analysis of spatial position of electromagnetic bearing-rotor system on moving carrier

作　　者：吴妙妮 蒋科坚 WU Miao-ni;JIANG Ke-jian(School of Information Science and Technology,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学信息学院,浙江杭州310018

出　　处：《机电工程》2020年第12期1400-1408,1446,共10页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(11272288);浙江省自然科学基金资助项目(LY18E050017)。

摘　　要：针对转子系统在移动载体上的位置参数对其动力学特性的影响问题,对电磁轴承-转子系统在载体上的动力学特性进行了研究。以一个单盘、多质量和单轴承的柔性转子系统为研究对象,对转子系统在载体上的任意安装位置和轴向方向进行了建模;分析了转子系统在载体上的安装位置和轴向方向不同对其动力学特性的影响;最后利用电磁轴承-转子系统半实物仿真平台进行了测试。研究结果表明:在载体运动条件下,转子系统的安装位置不同会使其运动轨迹中心发生偏移,可能导致转子与定子之间发生局部碰撞;轴向方向不同会使转子系统的运动轨迹大小发生变化,导致转子系统不能稳定运行。因此,当载体在运动时,需要考虑转子系统的位置对其动力学特性的影响。Aiming at the influence performance of the rotor system's position parameters on the moving carrier on its dynamic characteristics,the dynamic characteristics of the electromagnetic bearing-rotor system on the carrier were studied.Taking a flexible rotor system with singlerigid-dish,multi-lumped-mass,and single-bearing as the research object,the mounting position and the axial directions of the rotor system were modeled on a carrier.The influence of different installation position and axial direction of the rotor system on its dynamic characteristics was tested with the electromagnetic bearing-rotor system semi-physical simulation platform.The results indicate that under the motion condition of the vehicle,the center of the motion trajectory of the rotor system can be offset by different installation positions,which may lead to the local collision of the rotor and the stator.The different axial direction can cause the rotor system to change the size of the trajectory,resulting in the rotor system running unstably.Therefore,when the carrier is in motion,the influence of the rotor system position on its dynamic characteristics should be considered.

关 键 词：电磁轴承-转子系统 动力学特性 运动载体 转子建模 安装位置 

分 类 号：TH133.3[机械工程—机械制造及自动化]