九自由度运动模拟器相对位置精度分析与指标分解

摘要

九自由度运动模拟器是标定航天器交会对接GNC子系统中交会对接光学成像敏感器(CRDS)的关键设备,具有较高的相对位置精度要求.以此为出发点,对影响系统综合指标的误差组成进行系统性分析.梳理各误差分量的关系及相互作用原理,建立误差模型,通过对系统综合指标进行合理的分解与分配,最终使九自由度运动模拟器系统精度达到设计要求.%9 degree of freedom motion simulator (9-DOF-MS) is the key equipment for calibration of camera-type rendezvous & docking sensor (CRDS) in spacecraft rendezvous and docking guidance navigation and control (GNC) sub-system,and it must be with high relative position precision.To meet this demand,the components of errors impacting this system's integral indexes are analyzed systemically in this paper.At first,the relationship and interactions among the components of system errors are analyzed.Then the error model is built.By decomposing and redistributing the systematic precision index,9-DOFMS design fulfills the precision requirements.