论文部分内容阅读
针对空间光通信中捕获、瞄准和跟踪(ATP)技术的精跟踪系统对信标光斑实时准确跟踪需求,设计了基于前馈补偿的比例,积分和微分(PID)模糊控制系统,采用camera-link接口的高帧频CMOS相机和大规模FP-GA芯片设计了精跟踪处理控制平台,并将图像处理、前馈补偿和PID模糊控制等功能全部集成在FPGA芯片内部。实验结果表明,前馈补偿模糊PID控制具有更强的系统适应性,精跟踪系统带宽达到300 Hz,对大于100 Hz的高频振动频谱仍然有很好的抑制补偿效果,尤其对于低于60 Hz的主要扰动频谱具有很好的跟踪补偿效果,抖动压缩比达到90%以上,抖动均方差小于1 pixel,定位精度约为1μrad。
Aiming at the requirement of real-time and accurate tracking of beacon spot in precision optical tracking system of space optical communication, a proportional-integral-derivative (PID) fuzzy control system based on feedforward compensation is designed. The camera-link Interface high frame rate CMOS camera and large-scale FP-GA chip designed tracking control platform, and image processing, feedforward compensation and PID fuzzy control and other functions are fully integrated within the FPGA chip. Experimental results show that feedforward compensated fuzzy PID control has better system adaptability, fine tracking system bandwidth up to 300 Hz, good rejection of compensation for high frequency vibration spectrum above 100 Hz, especially for those below 60 Hz The main disturbance spectrum has a good tracking compensation effect, the jitter compression ratio of more than 90%, jitter mean square error of less than 1 pixel, positioning accuracy of about 1μrad.