ZSN4系列直流电动机是在Z4系列直流电动机基础上开发设计的具有高起动转矩、高过载能力电机，主要应用于驱动水泥回转窑等设备。
Series ZSN4 DC motors are the new generation of Z4 Series DC motors with high starting torque and overload. Mainly used as the drive equipment for cement rotary kiln.
在此基础上研究了利用谐波反电势信号实现混合式步进电动机闭环控制的方法，设计了步进电动机的微机控制系统。
On this base, the closed - loop control method of hybrid step motor using the harmonic back EMF is investigated, and the microcomputer control system of step motor is designed.
以变速驱动压力机的工作负荷、运动特点、工作总功、力矩和角动量为基础，计算其驱动电动机所需的功率。
And then the power of servo motor is calculated according to crank press working load, kinematical characteristic, torque and rotational momentum.
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