给出了机车速度传感器校验仪的工作原理以及研制方法。校验仪本身构成一个完备的系统,利用脉宽调制(PWM)技术,通过控制IGBT达到控制直流伺服电机电枢两端的电压,从而实现控制电机转速的目的。 The working principle and development method of locomotive speed sensor calibrator are given. Calibrator itself constitutes a complete system, the use of pulse width modulation (PWM) technology, through the control IGBT to achieve control of DC servo motor armature across the voltage, in order to achieve the purpose of controlling the motor speed.