The effects of stator and rotor eccentricity on the magnetic field distributions,cogging torque and unbalanced force were calculated in this paper by using finite element method(FEM).

• 采用有限元法计算分析了定子偏心与转子偏心对无刷直流电动机的气隙磁场、定位力矩及单向磁拉力的影响。