The rotary voice coil actuator is adopted and bears a little initial, big torque, big distance, quick respond.
采用新型的旋转式音圈电机，它具有转动惯量小、输出力矩大、行程范围大、响应快等特点。
Current fluctuation is analyzed during coil commutation time and electromagnetic torque is computed and method is given to restrain ripple of electromagnetic torque.
对绕组换相时电流波动进行了分析，并计算了电机电磁转矩，给出了抑制电磁转矩脉动的方法。
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