【摘要】 为研究尺寸效应对轴向磁化永磁电机性能的影响,采用基于单元边的有限元方法对双转子电机的转矩进行了仿真计算,并将直径为20 mm电机的一系列转矩计算结果和实验测得结果进行了比较,计算值和实测值基本一致。得出了轴向磁化永磁微电机定子线圈线宽和线间距均为50μm的最佳布线密度。分析了电机在结构、转矩和气隙磁场多方面因素共同限制下所能达到的最小尺寸,即精密机械意义上的能满足实际应用的最小电机直径为10 mm,厚度为5．2 mm,通以0．1 A的电流时能获得47μN·m的转矩。分析方法和结果可对该类电机微小型化过程中的设计起指导做用。更多还原

【Abstract】 In order to study the size effect of the axial-magnetized permanent magnet dual rotor micromotor on its performance, the element-edge based finite element analysis method was adopted to simulate the torque of the motor. The simulated torques of a motor with 20 mm diameter were compared with the experimentally measured ones and a good agreement between them was achineved. The winding density in the stator was analyzed, and the obtained optimal scheme is that both the line width and the space between the lines are 50 μm. The minimum dimension of the motor confined by the configuration, torque of 47 μN·m, and air gap magnetic flux density, etc. , was also analyzed and it was reached that the motor with 10 mm diameter and 5.2 mm thickness may satisfy the practical application needs in the area of fine mechanics with the electric current of 0. 1A. The suggested analysis method is beneficial to the design and miniaturization of the micromotor.更多还原