Abstract：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.
韩雪岩,祁坤,张哲,贾建国. 永磁同步直线电机磁阻力分析及抑制措施[J]. 电工技术学报, 2015, 30(6): 70-76.
Han Xueyan,Qi Kun,Zhang Zhe,Jia Jianguo. Analysis and Suppression Measures of Magnetic Resistance Force in Permanent Magnet Linear Synchronous Motors. Transactions of China Electrotechnical Society, 2015, 30(6): 70-76.
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2015, Vol. 30 
