光学精密工程2011，Vol.19Issue(4)：812-819,8.DOI:10.3788/OPE.20111904.0812
航空相机前向像移补偿的线性自抗扰控制
Linear auto disturbance rejection control of forward image motion compensation in aerial cameras
摘要
Abstract
A Linear Auto Disturbance Rejection Controller(LADRC) is designed to eliminate the disturbance from the variational aircraft gesture angle velocity on forward image motion compensation of the reflector in an aerial camera. The research includes the equivalent relation between angle velocity and torque disturbance, as well as the estimation and compensation methods of disturbance. Firstly,the influence of angle acceleration on the image motion compensation is analyzed. Then, a mathematic model of reflector system is established with consideration of the torque disturbance, and a linear extended state observer to estimate the disturbance and a control law with disturbance compensation link are designed. Finally, an experiment on the reflector is performed to test the control performance of the LADRC. Experiment results indicate that residual error of LADRC is within 1.4％, which has reduced 75 ％ as compared with that of traditional lag-lead compensation method. Furthermore,the stablestate speed precision of the LADRC reaches 0. 25％. In conclution, the control method improves thereflector performance of cameras in speed precision and robustness.关键词
像移补偿/角速度扰动/扰动估计/扩张状态观测器/线性自抗扰控制Key words
image motion compensation/ angle velocity disturbance/ disturbance estimation/ extended state observer/ Linear Auto Disturbance Rejection Control(LADRC)分类
航空航天引用本文复制引用
黄浦,葛文奇,李友一,李军,修吉宏..航空相机前向像移补偿的线性自抗扰控制[J].光学精密工程,2011,19(4):812-819,8.基金项目
国家863高技术研究发展计划资助项目(No.2009AA7010102) （No.2009AA7010102）
