Development Of Target Tracking System For The Hardware In Loop Detumble Simulation Of Malfunctional Spacecraft

With the increase of space exploration missions in various countries of the world,space technology has become a hot spot in today's social research.A large amount of space junk is generated every year in space,most of which are satellites that cannot work due to malfunction or fuel exhaustion.The removal of space non-cooperative targets is particularly complicated because the non-cooperative targets themselves cannot be controlled or communicated,and their motion information can only be obtained by the collection of external sensors.The traditional space capture technology is faced with a relatively stable moving space target,which cannot be directly captured for high-speed tumble non-cooperative targets.It is especially important to reduce the motion of the target before the task is captured,and the electromagnetic force as a non-contact force can achieve the weakening of the target motion.The space task experiment in the real environment is expensive,so it is especially important to carry out the ground simulation experiment before the space task.In the process of electromagnetic tumble target electromagnetic detumble,the braking device needs to track the position and posture of the target at the same time.The main research contents of this paper are the technical problems of electromagnetic detumble of space targets and the problems of local verification experiments.As the basis of space-on-orbit service technology,it provides corresponding technical reference for the on-orbit detumble and capture of spatial non-cooperative targets.Firstly,the space robot system is modeled,and the dynamics simulation is carried out in combination with the target following process.Based on this,the simulation results of the system performing the electromagnetic orbit mission trajectory are analyzed.At the same time,the space robot joint trajectory is compared with the fixed pedestal machine joint trajectory.Then,the propulsive force of the pedestal steady state during the detumble process is simulated,and the influence of the pedestal disturbance on the pose follow-up is analyzed.Next,based on the semi-physical simulation principle,the ground tumble target tracking system is built to simulate the electromagnetic detumble verification process for the space tumble target.The system can realize the attitude following of the electromagnetic braking device to the tumble target.and simulate the braking process of the electromagnetic force on the tumble target.Finally,the experimental system is used to carry out the related experiments of the posture of the tumble target,which verifies the effectiveness of the system.