The researcher could use the ansys software to design and analyze the motors who did n ' t know the ansys software very well by the special purpose software packets . the influence of a centralization winding brushless dc motor structural design parameter and magnetic field were analyzed , and a way to achieve the fix position angular force was brought out 利用上述软件研讨无刷直流电机的定位转矩的求取方法；分析集中式绕组的无刷直流电机各结构设计参数对磁场的影响，尝试求取、分析空载漏磁系数，讨论如何削弱定位转矩。
