新型光学检测靶标静态指向精度评价分析  

Evaluation and analysis of the static pointing accuracy of the novel optical testing target

作　　者：张绍军 高云国[2] 薛向尧[2] 毕寻 Zhang Shaojun;Gao Yunguo;Xue Xiangyao;Bi Xun(University of Chinese Academy of Science, Beijing 100049, China;Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China)

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

出　　处：《仪器仪表学报》2018年第4期18-25,共8页Chinese Journal of Scientific Instrument

摘　　要：静态指向精度是新型光学检测靶标的主要设计指标之一。为了对检测靶标的静态指向精度进行评价,结合靶标机构运动形式找出影响指向误差的主要误差源,运用齐次坐标变换法构建了指向误差理论模型;在数学模型基础上,利用MATLAB软件对指向误差进行了统计意义下的仿真分析,得出在全工作空间内靶标指向误差分布规律,比对了各误差对指向误差的影响程度;实验标定了检测靶标的空间静态指向误差。结果表明,在工作空间内靶标静态指向误差范围为70″-245″,达到了静态指向精度设计指标5＇。整个研究对新研制靶标的检测性能有了全面了解,为后续的误差补偿等奠定了理论基础,也为其它机构误差研究提供了参考。Static pointing precision is one of the main design indices of the novel optical testing target. In order to comprehensively evaluate the spatial pointing accuracy of the novel optical testing target,the main error sources affecting the pointare identified firstly with the motion form of the target mechanism. The theoretical model of the pointing error is constructed by means of the homogeneous coordinate transformation. Then,the simulation analysis of the pointing error in statistical aspect iscarried out by using MATLAB software based on mathematical models. The distribution of the pointing error and the degrees of the error influenceson the pointing error are obtained in the full working space by simulation. Finally,the pointing error of the target is calibrated by experiments. The experimental results show that the static pointing error range of the testing target is 70″ to 250″ in the working space,and the precision design index is5＇. The testing performance of the newly developed target are comprehensively explored,which provides a theoretical foundation for subsequent error compensation. This work can also provide a reference for error research of other mechanisms.

关 键 词：光学检测靶标 静态指向误差 误差建模 误差标定 

分 类 号：TH74[机械工程—光学工程]