设计一个基于步进电机的受电弓主动控制系统,利用压力传感器采集振动压力信号,以STM32F103系列单片机作为控制核心,接受振动信号并且作为驱动器输出脉冲,再以两相混合式步进电机作为主动控制的工作部分,通过电机传递的轴向位移对接触压力进行修正,从而达到减小弓网间接触力波动,提高受流质量的目的。 A pantograph active control system based on stepper motor was designed. Vibration pressure signal was collected by pressure sensor. The STM32F103 series microcontroller was used as the control core to receive the vibration signal and output the pulse as the driver. The two-phase hybrid stepping motor was used as the active Control part of the work, through the axial displacement of the motor to contact pressure correction, so as to reduce the contact force fluctuation between the bow network to improve the quality of the current by the purpose.