This paper put forward the questions of original control system at electric locomotive, and discuss the principle a. nd the advantage about the control technology of direct current -chopped wave.
提出了焦炉电机车原控制系统所存在的问题，论述了直流波控制技术的工作原理及优越性。
Through controlling the vibration amplitude and direct current component of the driving wave for the varifocal mirror, we can obtain the different depth range.
通过控制变焦镜驱动波的振幅和直流成份，可获得不同的深度范围。
It works by the online type direct current chopped wave voltage stabilizing way and attains the voltage stabilizing precision by the control of PWM.
它采用在线式直流斩波稳压的形式工作，用PWM控制来达到所需的稳压精度。
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