摘要
直线电动机存在由端部效应、齿槽效应和法向吸力引起的推力波动,对电动机动态稳定性和伺服控制性能产生较大的影响。利用等效磁化电流和许-可变换求解电动机的磁场分布,并采用ANSYS进行仿真分析验证,采用对电动机初级铁心长度优化的方法降低推力波动。实验表明,推力波动实验值与分析基本一致,证明了提出的磁场分析方法和优化设计的有效性。
The edge effect, the cogging force and the normal suction are the main reasons of the thrust fluctuation, which has a bad effect on the dynamic stability and servo-control performance of the permanent magnet linear synchronous motors （PMLSM）. In this paper, the magnetic field distribution is calculated by means of equivalent magnetizing current and Schwarz-christoffel transformation, and is analyzed and verified by ANSYS. The thrust fluctuation is greatly reduced by optimizating the length of the primary iron. It is indicated that the analysis of the thrust fluctuation is consistent with the experiment. The validity of the analysis of the magnetic field and the optimum design is proved.
出处
《微电机》
北大核心
2007年第8期4-8,共5页
Micromotors
基金
国家自然科学基金项目(60474021)
国家863计划项目(2002AA423120)
