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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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。

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