稳定平台轴系精度对视轴指向误差的影响分析  

Analysis of LOS pointing error derived from precision of shafting in stabilization mechanism

作　　者：王涛[1,2] 朱明超[1] 訚胜利[1] 贾宏光[1] 孙高[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,吉林长春130033 [2]中国科学院研究生院,北京100049

出　　处：《红外与激光工程》2011年第11期2265-2269,共5页Infrared and Laser Engineering

基　　金：中国科学院"三期创新"平台资助项目

摘　　要：为提高双框架稳定跟踪平台的控制精度,需要对机械误差造成的视线角误差进行严格的控制,要求设计轴系在现有加工水平和轴承精度水平的基础上保证高的回转精度。轴承孔的同轴度、轴承跳动、结构挠度等是影响轴系回转精度的主要因素,文中对这些因素造成的轴系回转误差进行了分析与综合,并针对某样机进行定量的分析,得到了轴系的运动误差,计算了由此造成的视轴指向误差。通过分析计算,轴系误差造成的视轴指向误差满足设计指标的要求,从而验证了结构设计的可行性和合理性。In order to improve the control accuracy of double framework stabilization tracking platform, the view angle error of this device caused by mechanical error should be strictly controlled, high rotation accuracy of shafting should be guaranteed on the basis of the current level of processing accuracy and shaft bearing accuracy. The coaxial tolerance of bearing bore, run-out of assembled bearing, and structure deflection are the main effect factors of shaft rotation accuracy. In this paper, shaft rotary errors caused by these factors were analyzed and synthetized. The motion errors of shafting were gained through quantitative calculation of a prototype, and the pointing errors caused by errors of shafting were calculated. Through the calculation of pointing errors of sight, the errors caused by shafting errors could satisfy the requirements of design index, and the feasibility and rationality of structure design were verified.

关 键 词：稳定跟踪平台 轴系误差 视轴指向误差 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]