多级航天器高精度六自由度相对控制方法研究OA

To address the issues of slow sensor drift caused by thermal-mechanical environments and the lack of active translational control in active pointing ultra-quiet platforms during distributed space interferometry missions,a six-degree-of-freedom(6-DOF)high-precision relative position and attitude control method for multi-stage spacecraft is investigated.Utilizing the six-dimensional force output capability of the ultra-quiet platform,an integrated control scheme combining state estimation and multi-stage coordinated anti-disturbance is proposed.First,an augmented Kalman filter-based relative translational state estimator is designed to explicitly estimate and compensate for the sensor's slow drift in real time.Subsequently,to tackle the severe 6-DOF dynamic coupling inherent in the platform structure,an active translational control loop is incorporated into the multi-stage coordinated anti-disturbance controller,eliminating the dynamic coupling between the translational and attitude degrees of freedom.Simulation and theoretical analysis demonstrate that the proposed strategy effectively suppresses complex space disturbances,achieving micrometer relative positioning and sub-arcsecond pointing accuracies.The research findings provide a critical technical reference for the engineering implementation of ultra-high-precision formation systems in future distributed space interferometry missions.