扫描型光电侦察系统高精度位置伺服系统设计与应用
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摘要
针对伺服系统在侦察扫描、目标定位及跟踪时不同的工作状态,提出了不同的控制方法及策略。侦察扫描时系统具有重复周期运行的特点,给出了基于改进重复控制及PID控制相结合的复合控制方法,通过遗传算法对PID参数进行整定,获得最优解,利用重复控制对扫描过程中周期干扰信号引起的误差进行抑制。将分段自适应控制及积分分离的PID控制方法分别应用于大角度调转定位及目标跟踪阶段。仿真及应用结果表明,提出的控制策略及方法能使位置伺服系统获得良好的动态及稳态特性,为提高系统拼接后的图像质量,提高目标定位及跟踪精度提供了保证,满足了实际需求。
Aiming at different working states of servo system in reconnaissance scanning, target location and tracking, different control methods and strategies were proposed. Servo system has characteristic of repetitive periodic operation in scanning, the compound control method based on improved repetitive control and PID control was presented, the parameters of PID were tuned by genetic algorithm, and the optimal solution was obtained. By improved repetitive control, the errors caused by periodic disturbance signal were restrained.The piecewise adaptive control and integral separation PID control methods were applied to the large angle rotation positioning and target tracking respectively.The simulation and application results show that the proposed control strategy and method can make the position servo system obtain good dynamic and steady-state characteristics. It can improve the image quality by mosaic, improve the accuracy of target location and tracking, and meet the actual needs.
Aiming at different working states of servo system in reconnaissance scanning, target location and tracking, different control methods and strategies were proposed. Servo system has characteristic of repetitive periodic operation in scanning, the compound control method based on improved repetitive control and PID control was presented, the parameters of PID were tuned by genetic algorithm, and the optimal solution was obtained. By improved repetitive control, the errors caused by periodic disturbance signal were restrained.The piecewise adaptive control and integral separation PID control methods were applied to the large angle rotation positioning and target tracking respectively.The simulation and application results show that the proposed control strategy and method can make the position servo system obtain good dynamic and steady-state characteristics. It can improve the image quality by mosaic, improve the accuracy of target location and tracking, and meet the actual needs.
引文
[1] 王平,田大鹏,徐宁,等.航空光电侦察平台内藏式扫描系统像旋分析及补偿[J].光学学报,2017,37(9):59-67.
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[6] 金刚石,王斯.凝视热像仪搜索系统回扫速率分析[J].激光与红外,2018,48(5):611-614.
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[8] 刘金琨.先进PID控制及其MATLAB仿真[M].北京:电子工业出版社,2003.
[2] 蔡荣,祁蒙,李利亚.车载光电侦察系统升降平台设计[J].激光与红外,2014,44(3):273-276.
[3] 李焱,曹立华,王弟男.惯导平台下舰载光电搜索跟踪系统的控制[J].光学精密工程,2011,19(5):1126-1133.
[4] 钱惟贤,陈钱,顾国华.红外面阵旋转搜索系统作用距离方程[J].红外与激光工程,2011,40(11):2078-2084.
[5] 张明义,赵泉朴,吴中华.无人机机载光电平台侦察图像拼接技术[J].舰船电子工程,2016,270(12):113-115.
[6] 金刚石,王斯.凝视热像仪搜索系统回扫速率分析[J].激光与红外,2018,48(5):611-614.
[7] Li M Z,He Z Y,Xing Y.Analysis and design of repetitive controlled inverter system with high dynamic performance[C]//Power Electronics and Motion Control Conference,2006(3):1-5.
[8] 刘金琨.先进PID控制及其MATLAB仿真[M].北京:电子工业出版社,2003.