在光电仿型加工及光电检测的仪器或设备中,除了要得到一定波形、幅度和功率的控制脉冲信号以外,还需要解决控制线路的抗干扰问题。如采用光圈法的光电跟踪系统,由于其光敏元件是安放在图纸下面的,在它接收光电头光源照射的同时,难免地还会受到日光和灯光等外光源的干扰。此外,图纸上的污迹、墨线宽度不均匀等因素,都会在光圈照射下产生干扰脉冲电压,影响机器的正常工作。光电线切割机光圈跟踪系统框图示于图1。图中,V_x、V_y 和 V_(?)为 X、y 和(?)坐标的偏差信号电压。 In optoelectronic processing and photodetecting instruments or equipment, in addition to get a certain waveform, amplitude and power control pulse signal, but also need to solve the anti-jamming control circuit problems. Such as the use of optical tracking system optoelectronic, because its photosensitive element is placed below the drawings, it receives the photoelectric head light irradiation, but also inevitably be sunlight and light and other external light interference. In addition, stains on the drawings, ink width unevenness and other factors, will produce interference in the aperture pulse voltage, affecting the normal operation of the machine. Optical wire cutting machine aperture tracking system block diagram shown in Figure 1. In the figure, V_x, V_y and V_ (?) Are the deviation signal voltages of X, y and (?) Coordinates.