In order to analyze the impact on torque of reducing the main size in designing planar permanent magnet micromotor, the magnetomotive forces both of the stator and the rotor are studied.

• 摘要在平面永磁微电机设计中，为分析电机微型化过程中主要尺寸变化对转矩等性能的影响，从磁场观点考虑，对平面电机定、转子磁场磁势进行分析，推出用磁场变量表示的气隙磁共能表达式，并由磁共能求得电机转矩。