基于有限元法的永磁直线同步电动机动子瞬态振动预测  

Predictive Method of Vibration for Permanent Magnet Linear Synchronic Motor's Mover

作　　者：宁建荣[1,2] 夏加宽[1] 沈丽[1] 王成元[1] 

机构地区：[1]沈阳工业大学,沈阳110178 [2]沈阳化工大学,沈阳110142

出　　处：《中国机械工程》2011年第6期671-674,共4页China Mechanical Engineering

基　　金：高等学校博士学科点专项科研基金资助项目(20102102110001)

摘　　要：提出在设计阶段进行永磁直线同步电动机动子振动预测的方法。利用有限元分析方法对电动机动子进行动力学计算,获得加速度频响函数;对电动机进行电磁力分析,建立电磁力、电流的关系;利用MATLAB对电动机进行瞬态运行仿真,获得瞬态电磁力;运用加速度频响函数得到动子瞬态加速度响应。仿真结果显示:瞬态比稳态振动更复杂。该方法为永磁直线同步电机的优化设计提供依据。PMLSM drives the feed table of an ultra-precision CNC machine tool directly,so the vibration of PMLSM＇s mover affects directly the precision of the machine tool.The method of vibration prediction in the design stage was constructed herein.Firstly,FEM was used to analyze the dynamics of the mover,and the transfer function of magnetic force and acceleration were obtained.Secondly,the connection of current and magnetic force was set up.Thirdly,the transient current was got by MATLAB while the PMLSM was running in transient.Then magnetic forces were calculated by interpolation using the relationship of current and magnetic force.Lastly,acceleration was calculated by the transfer function.It is helpful to vibration analysis and design optimization of PMLSM in the future work.

关 键 词：永磁直线同步电动机 振动 有限元法 超精密机床 

分 类 号：TM35[电气工程—电机]