考虑端部效应的动磁式磁悬浮平面电机电磁力解析模型  

Analytical Model of Electromagnetic Force With End Effect of the Moving-magnets Magnetic Levitation Planar Motors

作　　者：薛睿 曹广忠[1] 黄苏丹[1] 胡智勇 徐斌[1] XUE Rui;CAO Guangzhong;HUANG Sudan;HU Zhiyong;XU Bin(Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robot,College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen Guangdong 518060,China)

机构地区：[1]深圳大学机电与控制工程学院,广东省电磁控制与智能机器人重点实验室,广东深圳518060

出　　处：《微电机》2023年第6期21-25,80,共6页Micromotors

基　　金：国家自然科学基金(52277061、51907128);广东省自然科学基金(2021A1515011704);深圳市自然科学基金基础研究重点项目(JCYJ20220818095804009)。

摘　　要：自主设计了一种新型六自由度动磁式磁悬浮平面电机,其动子由四组完全相同的Halbach永磁阵列两两垂直组合而成,组合的永磁阵列的端部磁场存在畸变,端部效应显著。为此,论文采用机械伪周期磁场建模方法,推导了考虑端部效应的动子单组永磁阵列的磁场分布解析模型;采用洛伦兹力法,建立了其电磁力解析模型;基于有限元分析软件,构建了动子单组永磁阵列的磁场有限元仿真模型和在单根励磁线圈作用下的电磁力有限元仿真模型,并进行了仿真和比较研究。研究表明,解析计算与有限元仿真计算结果吻合,验证了建立的磁场分布和电磁力解析模型的有效性,解析模型可用于该类电机的快速计算与分析。A novel 6-DOF moving-magnets magnetic levitation planar motor was independently designed,its mover was composed of four identical Halbach permanent magnet arrays combined vertically,and the end magnetic field of the combined permanent magnet array was distorted,and the end effect was significant.Therefore,the mechanical pseudo-periodic magnetic field modeling method was used to derive the analytical model of the magnetic field distribution of the mover single group permanent magnet array considering the end effect.The Lorentz force method was used to establish an analytical model of electromagnetic force.Based on finite element analysis software,the magnetic field finite element simulation model of the mover single permanent magnet array and the electromagnetic force finite element simulation model under the action of a single excitation coil were constructed,and the simulation and comparative study were carried out.The results show that the analytical calculation is consistent with the finite element simulation calculation results,which verifies the effectiveness of the established analytical model of magnetic field distribution and electromagnetic force,and the analytical model can be used for the rapid calculation and analysis of this type of motor.

关 键 词：动磁式磁悬浮平面电机 电磁力 端部效应 Halbach永磁阵列 有限元法 

分 类 号：TM301.2[电气工程—电机]