摘要
以某机床用永磁直线电机为例,分析了永磁直线电机磁阻力产生的原因,通过解析公式推导得到了最小端部力下的初级长度计算公式,利用此公式可以初步估算端部力较小时直线电机的初级长度,并且通过有限元和样机实验两种手段验证了初级长度计算公式的可用性;基于分磁环理论,通过有限元法,建立了直线电机的计算模型,对其磁阻力进行了分析计算,并利用样机实验进行了对比验证,得出在初级端部贴铁块可以进一步削弱端部力。本文通过实验证实这两种方法对削弱直线电机磁阻力是有效的,结论可为永磁直线电机磁阻力的削弱提供抑制措施。
Take a permanent magnet linear motor for machine tool as an example, the causes of the magnetic resistance force of permanent magnet linear motor are analyzed. By deriving the analytical formulas, the primary length formula under the minimal end force is obtained. when the end force is small, this formula can be used to preliminary estimate the primary length of the linear motor, and the availability of the calculation formula of primary length is verified by finite element method and the prototype test. Based on the divided magnetic ring theory, the calculation model of permanent magnet linear motor for machine tool is established through finite element method. The magnetic resistance force is analyzed and calculated. By comparing the results of prototype test and calculation, the results show that primary end sticking blocks can further weaken the end force, and the science of two methods to weaken permanent linear motor magnetic resistance force is confirmed. The conclusion can provide suppression measures for the weakening magnetic resistance force of permanent magnet linear motor.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第6期70-76,共7页
Transactions of China Electrotechnical Society
基金
辽宁省自然科学基金资助项目(201202165)
关键词
永磁直线同步电机
磁阻力
端部力
抑制措施
Permanent magnet linear motor,magnetic resistance force,end force,suppression measure
