作者研究提出了用光栅,判向电路,同步计数器和D/A转换器来构成一种新型光栅电压控制器,由于它没有磨损问题,工作稳定可靠,所以特别适用于精度要求高,需要能长期稳定工作和控制电压需要频繁调节的场合。可用在电气化机车的调速和各种重要的铁路控制和通讯系统中。 The authors propose a new type of grating voltage controller using grating, decoupling circuit, synchronous counter and D / A converter. Because it has no wear problem and works stably and reliably, it is especially suitable for high precision and long-term Stable operation and control voltage need frequent adjustment of the occasion. It can be used in the speed control of electrified locomotives and various important railway control and communication systems.