基于机载光电成像系统光学铰链离轴的伺服抗扰算法设计  

Servo Disturbance Rejection Algorithm Design of off-axis Optical Hinge Based on Airborne Photoelectric Imaging System

作　　者：白志刚 戴凌冉 吴晔[2] 钟宁[2] 杨光海[2] Bai Zhigang;Dai Lingran;Wu Ye;Zhong Ning;Yang Guanghai(the 5th Military Delegate Room of Air Force Equipment to Chengdu,Chengdu 610041,China;Southwest Institute of Technical Physics,Chengdu 610041,China)

机构地区：[1]空装驻成都地区第五军事代表室,成都610041 [2]西南技术物理研究所,成都610041

出　　处：《计算机测量与控制》2020年第5期220-223,228,共5页Computer Measurement &Control

摘　　要：在机载光电成像系统中,小型化是其未来发展的方向之一;为了解决系统小型化带来的尺寸受限问题,系统采用了光学铰链与伺服框架轴非正交的离轴设计,这给光轴指向控制及卸载飞机扰动的稳定控制带来了一定的困难;为了解决这一问题,系统控制回路采取半捷联设计,通过使用经微分处理后的伺服框架角信号,与叠加了经抗扰算法处理的飞机载体三轴角速度信号共同作为稳定回路的期望值,再进行匹配滤波;通过对系统进行稳定精度测试验证,航向和俯仰稳定精度均在0.02°以内,对比采用陀螺信号反馈的直接稳定控制回路,具有相似的稳定精度,并且此抗扰算法设计不会对系统环境适应性带来影响。In the airborne photoelectric imaging system,the miniaturization is one of the way for development.To solve the problem of the size limit,a non-orthogonal off-axis design on optical hinge and servo gimbal axis is used in this system,it also brings some difficult on optical axis pointing control and the stability control of unloading aircraft disturbance.To solve the problem,using half-strapdown design on system control loop,via servo gimbal axis signal by differential processing,and tri-axial angular speed signal on aircraft carrier overlying disturbance rejection algorithm,treated as expected value of the stable loop,then match-filtering is given.By the test of stabilization precision to the system,the result of course and pitch is below 0.02o,comparing with the direct stable control loop by using gyro signal feedback,provided with similar stable precision,and the disturbance rejection algorithm design will not bring any effect on environmental adaptability of the system.

关 键 词：光电成像系统 离轴设计 半捷联设计 抗扰算法 匹配滤波 稳定精度 

分 类 号：TJ85[兵器科学与技术—武器系统与运用工程]