pulse chopper

By controlling the light wave-form of Xe lamp with insulated gate bipolar transistor ( IGBT) and using the periodic long-pulse chopper technology, a long pulsed medical Nd: YAG laser was designed.

运用绝缘栅双极型晶体管（IGBT）对泵浦氙灯进行斩波放电，并采用间歇式长脉冲斩波技术，设计了一套能发射和控制长脉冲激光的Nd：YAG激光器。

According to mathematical models of generator and PWM ( Pulse Width Modulation)-control-led wave chopper, the PID ( Proportional-Integral-Derivative) control algorithm is selected by the engineering design method for its regulator.

根据同步机的数学模型、脉宽调制控制的斩波器的数学模型，应用工程设计法确定其调节器的控制算法为比例积分微分（PID）调节。