小卫星立体成像姿态控制半物理仿真  

Semi-physics Simulation of Small Satellite Attitude Control in Stereo Imaging

作　　者：徐开[1] 金光[1] 张刘[1] 孙志远[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生院,北京100049

出　　处：《光电工程》2012年第9期12-17,共6页Opto-Electronic Engineering

基　　金：吉林省自然科学青年基金(201201010);国家自然科学青年基金(61008046)资助项目

摘　　要：随着小卫星功能需求不断提升,小卫星同轨立体成像技术成为学者研究的焦点。针对某小卫星单线阵CCD相机同轨立体成像期间的姿态控制半物理仿真展开研究。分析得出小卫星同轨立体成像过程中的姿态运行规律,对同轨立体成像的姿态控制算法进行设计,利用相似原理和姿态运行规律设计半物理仿真环境。基于高精度单轴气浮转台和星上部件建立小卫星立体成像姿态控制半物理仿真平台。利用该平台进行了同轨立体成像相关的姿态控制半物理实验。实验结果表明该小卫星立体成像过程中俯仰轴机动52°,用时67s完成,且达到三轴稳定状态。姿态控制指向精度优于0.05°,稳定度优于0.005°/s。表明设计的小卫星姿控方案可以完成单线阵CCD的同轨立体成像。Along with the constantly promoting demand of the function of small satellite, stereo imaging of small satellite is one of hot subjects in aerospace field study recently. The study aimed at attitude control during stereo imaging in the same orbit of small satellites with single linear CCD camera. Through analysis and investigation, the operational rule of stereo imaging in the same orbit of small satellite was found out. Meanwhile, the algorithm of stereo imaging in the same orbit attitude control and semi-physical simulation system has been designed by using the similar principles and attitude operation rule of small satellite. Based on single-axis air-bearing platform and satellite components, semi-physical simulation platform of small satellite attitude control has been built. Finally, semi-physical simulation of small satellite attitude control system has been conducted at the stereo imaging. The results of the simulation indicate that small satellite pitch axis was maneuvered 52° within 75 s and three-axis reached a steady state. The pointing accuracy was 0.05° and attitude stability was 0.005°/s. It is demonstrated that the attitude control strategy can accomplish stereo imaging in the same orbit of single linear CCD optical load small satellite.

关 键 词：立体成像 大角度机动 相似原理 半物理仿真 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]