Analysis and Decompose of Nine Degrees of Freedom Motion Simulator Relative Positional Precision

Nine Degrees of Freedom Motion Simulator (9-DOF-MS) is the key equipment for calibration of Camera-type Rendezvous & Docking Sensor (CRDS) in spacecraft space rendezvous & docking Guidance Navigation and Control (GNC) sub-system, and it must be high with relative position precision. For meeting 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-DOF-MS designed fulfils the precision requirements.