摘要
针对由于定转子气隙偏心引起的不平衡磁拉力影响永磁同步电主轴动态性能的问题。首先分析产生不平衡磁拉力的原因,其次根据电磁理论建立电磁不平衡磁拉力载荷模型,将气隙磁导展开为Fourier级数的形式,通过对定转子表面的Maxwell应力积分得到不平衡磁拉力的非线性解析表达式。基于Ansoft Maxwell电机仿真软件,建立永磁同步电主轴的有限元分析模型,以设定的气隙偏心量模拟不平衡磁拉力造成的气隙偏心,得到电主轴动态性能曲线。仿真结果表明:由于气隙偏心引起的不平衡磁拉力,导致永磁同步电主轴齿槽转矩增大,气隙磁密幅值增大,电主轴振动加剧。
Aiming at the problem that the unbalanced magnetic tension caused by the air gap eccentricity of the stator and rotor affects the dynamic performance of the permanent magnet synchronous electric spindles,the causes of unbalanced magnetic tension are analyzed.Then,the electromagnetic unbalanced magnetic tension load model is established based on the electromagnetic theory.The air gap magnetic conduction is expanded into a Fourier series.The analytical expression of the nonlinear unbalanced magnetic tension is obtained by integrating the Maxwell stress on the surfaces of the stator and the rotor.Based on ANSFT Maxwell motor simulation software,the finite element analysis model of the permanent magnet synchronous motorized spindle is established.The air gap eccentricity caused by the unbalanced magnetic tension is simulated by setting the air gap eccentricity,and the dynamic performance curve of the motorized spindle is obtained.The simulation results show that the unbalanced magnetic tension caused by the air gap eccentricity leads to the increase of cogging torque,air gap magnetic density and the vibration of the permanent magnet synchronous motorized spindle.
作者
单文桃
张健荣
刘新
潘艳飞
SHAN Wentao;ZHANG Jianrong;LIU Xin;PAN Yanfei(Jiangsu University of Technology,Changzhou 213001,Jiangsu China;Jiangsu Changjiang Intelligent Manufacturing Research Institute Co.,Ltd.,Changzhou 213001,Jiangsu China)
出处
《噪声与振动控制》
CSCD
2020年第1期9-12,41,共5页
Noise and Vibration Control
基金
国家自然科学基金青年基金资助项目(51405209)
江苏省青蓝工程优秀青年骨干教师基金资助项目
关键词
振动与波
不平衡磁拉力
气隙偏心
电主轴
动态性能
vibration and wave
unbalanced magnetic tension
air gap eccentricity
motorized spindle
dynamic performance
作者简介
单文桃(1987-),男,江苏省盐城市人,博士,副教授,从事电主轴结构设计与实验检测技术研究。E-mail:shanwentao520@163.com。
