分析了步进电机产生低频振荡的原因，提出了一种新控制方法—脉宽调整法。
The way of pulse-width adjustment which can change the size, the direction and the action time of the electromagnetic resultant force in the stepping motor.
把激光脉宽调整到与吸收颗粒的热弛豫时间一致可以避免热副作用，可对所选细胞产生选择性处理。
Adjusting the pulse width of the laser to the thermal relaxation time of the absorbing construction can avoid thermal side effects and facilitate a selective treatment of the selective cells.
在PW M脉宽调制的软件实现方法上，提出了线性积分比较法，大幅提高了脉宽调整方波的频率。
Linear integral compare method was proposed to realize PWM square wave, which can increase the wave frequency.
这种同步控制装置能方便地通过调整脉冲延时和脉宽来提高系统成像质量和作用距离。
This synchronization control set can improve its imaging quality and its action distance by conveniently adjusting the pulse delay and the pulse width.
首先介绍空间向量脉宽调变技术的基本原理，接著说明所设计的可自我调整参数之空间向量电流控制技术（STPWM）。
The operating principle of space vector pulse width modulation (SVPWM) is first described, and then the proposed self-tuning space current vector PWM (STPWM) technique is introduced.
首先介绍空间向量脉宽调变技术的基本原理，接著说明所设计的可自我调整参数之空间向量电流控制技术（STPWM）。
The operating principle of space vector pulse width modulation (SVPWM) is first described, and then the proposed self-tuning space current vector PWM (STPWM) technique is introduced.
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