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文章叙述了在蓄电池电动汽车中，应用以功率场效应直流斩波器为控制对象的单片机控制系统。系统采用了调频调宽的斩波控制方式，实现改变电动机电枢两端的平均电压，达到调速的目的。该系统具有较明显的节能效果，提高了电动汽车的工作可靠性。
The article described in the battery electric vehicles, the application of power field effect DC chopper control for the control of the microcontroller system. The system adopts the FM chopper control method to achieve wide changes in the average voltage across the motor armature to achieve speed control purposes. The system has a more obvious energy-saving effect, improve the reliability of electric vehicles.