We can realize the automation of the phase modulation by programming the controller of stepper motor.
通过对步进电机控制器编程实现了相位调制的自动化。
Using space vector pulse-width modulation (SVPWM) signal transformation method, speed regulation of induction motor is implemented by controlling the duty ratio of every converter switch.
利用电压空间矢量脉宽调制(SVPWM)信号变换控制功率变换器各开关器件的导通占空比，实现异步电动机的速度调节。
The working principle and performance characteristic of asynchronous motor cascade velocity modulation are analyzed, and the inner feedback cascade velocity modulation is introduced systematically.
分析了异步电动机串级调速的工作原理与性能特点，介绍了内反馈串级调速电机及其装置的系统结构。
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