关键词: 失效卫星, 接触式消旋, 振动抑制, 特征模型, 自适应控制

Abstract: High value failed satellites are key targets for in orbit service and generally have large flexibility and residual angular momentum. Using robotic arms to directly capture the target has the risk of collision. If the contact detumbling is used to reduce the target angular velocity in advance, the success rate of the service satellite to capture the target can be greatly improved. Aiming at the problem of contact detumbling control of non cooperative failed satellites with flexible vibrations, a flexible vibration suppression method based on the characteristic model is proposed. Firstly, the characteristic model of the flexible vibration angular velocity is established based on the contact dynamic equation. Then the adaptive flexible vibration suppressor based on the characteristic model is designed. Finally, the numerical simulation is carried out. The simulation results show that the method can effectively suppress the flexible vibration of the target during the detumbling process.

Key words: failed satellite, contact detumbling, vibration control, characteristic model, adaptive control