中国电机工程学报2016，Vol.36Issue(2)：547-553,614,8.DOI:10.13334/j.0258-8013.pcsee.2016.02.028
永磁直线电机端部效应力的解析计算
Analytical Calculation for End Effect Forces in Permanent Magnet Linear Motors
摘要
Abstract
The longitudinal end effect of short primary permanent magnet linear motors brings a great detent force and the normal force fluctuation, and aggravates the servo performances. In order to analyze the features of the end effect force when the armature current is zero, this article proposed a method to analyze the end effect force based on the virtual displacement principle combined with the flux function. On the base of analyzing the changes of flux distribution on the longitudinal end face of the mover, the article used virtual displacement principle to deduce analytical expression of normal force fluctuation and the thrust ripple which was caused by end effects, and revealed the fluctuation law of the end effect force. Through analyzing the analytical expressions of the end effect force, the influence law of mover length on the end effect force was summarized. Finally, simulations and experiments were conducted on a 12 slot 11 pole motor, simulation and experimental results are basically consistent with the analytical results, which verifies the correctness of the method to analyze the end effect force based on the virtual displacement principle combined with the flux function.关键词
永磁直线电机/端部效应力/纵向边缘磁通函数/虚位移法Key words
permanent magnet linear motor/end effect force/function of magnetic flux on longitudinal end face/virtual displacement principle分类
信息技术与安全科学引用本文复制引用
彭兵,张囡,夏加宽,沈丽,张志峰,孙宜标..永磁直线电机端部效应力的解析计算[J].中国电机工程学报,2016,36(2):547-553,614,8.基金项目
国家自然科学基金(51377108) （51377108）
辽宁省高等学校创新团队项目(LT2013006). Project Supported by National Natural Science Foundation of China (51377108) （LT2013006）
Program for Liaoning Innovative Research Team in University(LT2013006). （LT2013006）
