There are two causes or cogging force in linear permanent magnet motors, resulting from the slotting and the finite length of the iron-cored.
永磁直线电机的定位力是由铁心开槽及铁心的有限长产生的。
But in PMLSM, there are end effect, cogging force and ripple disturbance which confine its application as high accuracy numerical control machine.
但系统中存在端部效应、齿槽效应、纹波效应等推力波动，限制了其在高精度数控机床等要求高性能领域的应用。
On this basis, back electromotive force without load and with load is researched, simulated and analyzed, and cogging torque is analyzed and calculated in different dimensions of magnetic steel.
在此基础上，仿真了空载和负载下的电机反电动势，并且对不同磁钢尺寸下的定位力矩进行了分析计算。
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。
Parameters of the induced electromotive force and the electromagnetic torque and so on of the novel motor have been calculated, and it is not difficult to catch the maximum value of cogging torque.
计算了复合电机的感应电动势和电磁转矩，捕捉了齿槽定位转矩的最大值等电机参数。
Accordingly, a cogging torque and noise are reduced without reducing a back-electromotive force, thereby obtaining a high efficiency.
因此，在不减小反电动势的情况下减小了顿转扭矩和噪音，由此获得高效率。
Accordingly, a cogging torque and noise are reduced without reducing a back-electromotive force, thereby obtaining a high efficiency.
因此，在不减小反电动势的情况下减小了顿转扭矩和噪音，由此获得高效率。
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