光电探测设备CCD全自动调光系统设计

An Automatically Light Control System for CCD of Optical-electronic Equipment

介绍一种应用于机载光电探测设备方面的CCD全自动调光系统,采用视频信号的幅值作为反馈信号的调光方式,控制CCD电子快门与变密度盘相组合调节的方法实现全自动调光。详细叙述了自动调光系统的工作原理并解析了部分电路,采用了基于模糊自适应PID控制的方法,提高了调光过程中的收敛速度,同时也保证了系统有较小的超调量。该系统具有成像清晰、适应性强、反应迅速、可靠性高等优点,具有广阔的应用前景。

An applied automatically light control system for CCD of optical-electronic pod including its working principle structure is presented in this paper, which is controlled by harmonizing alterable electronic shutter with variable-density plate using the peak value of video signal; Putting forward arithmetic based on self -tuning fuzzy PID controller to calculate feedback quantity, Convergent Velocity during lighting can be improved and smaller overflow of the system be insured. Because of its producing clear and stable image,good adaptability,rapid response,high reliability and so on, the system has a widely applied foreground.