Brushless DC motor (BLDC) with permanent magnet excitation, in which electrical commutation is used instead of mechanical, has the same good characteristics of speed control as traditional DC motor.

无刷直流电动机利用电子换相代替机械换相，不但具有直流电动机的调速性能，而且体积小效率高，在许多领域已得到了广泛应用。

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Hybrid stepping motor rotor with permanent magnets, excitation and produced by permanent magnet electromagnetic torque realize stepping operation.

混合式步进电机的转子用永久磁钢，由励磁和永磁产生的电磁力矩实现步进运行。

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Compared with other motors, Permanent Magnet Synchronous motor (PMSM) has the advantages of low inertia, high torque-current ratio, low noise, no excitation loss.

永磁同步电机与其它电机相比具有低转动惯量、高转矩电流比、低噪声、无励磁损耗等一系列的优点。

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