Application of Integrated Circuit Phase-locked Loop in Measuring Pulse Duty Factor IC锁相环在脉冲占空比测量中的应用
The circuit has two output modes. The change of differential capacitance, which carries the acceleration, can be denoted by analog level and pulse duty factor. 该电路具有模拟和脉宽调制两种输出方式,能够将差分电容的变化通过模拟电平和输出脉冲信号的占空比表征,实现了对差分电容式加速度传感器信号的测量。
The result indicates that increasing the voltage exerted on the winding is conducive to quick response of solenoid, and the opening pulse and PWM pulse duty factor determine the magnitude of current in different phases. 试验表明,提高线圈电压有助于实现电磁阀快速开启,开启脉冲和PWM占空比决定了不同阶段电流的大小,三者的有机调节,可以实现理想的电流波形。
Do experiment about slicing silicon by a novel approach of electric discharge-electrolytic hybrid machining strategy using hybrid electrolyte. The experiment shows that enhancing the pulse width or increasing the duty factor can increase the slicing efficiency. 采用水基复合工作液,对不同电阻率晶硅材料进行了电火花电解复合切割试验,试验证明,提高脉冲宽度或增大占空比可以增加切割效率。
It revealed that the compilation of the system software was correct, which could produce PWM signal with any pulse width duty factor and insert the dead time; it could change the pulse width duty factor according to the input signal. Control strategies had been achieved basically. 实验证明:系统软件编写无误,可以产生任意脉宽占空比的PWM波形,并插入死区时间;可以根据采集到的信号实时改变脉宽占空比,控制策略基本实现。
Through analog computation, obtained the result those pulse duration and duty ratios are the most primary factor for the deterioration level thickness and the superficial micro crack. 通过模拟计算,得到脉冲激光的脉宽和占空比是影响变质层厚度和表面微裂纹的最主要的因素。