空间停靠动力学和控制

本文研究空间停靠是广义的，它包括停留和靠近两个内容。本文首先研究空间靠近动力学方程；其次讨论保持点的动力学特性和保持点轨迹稳定的必要条件；最后介绍靠近段安全可靠的控制策略，其中包括主动稳定保持点轨迹的控制方案。

SPACE BERTHING DYNAMIC AND CONTROL

In this paper,space berthing has a broad sense.It includes two stages:stationkeeping of chaser in the proximity of target and homing of chaser to target.Stationkeeping point is the distance between chaser and target.It varies with requests.Homing Represents the phase from stationkeeping to docking.Dynamic dquations of relative motion between two spacecrafts in a short distance are first studied,based on both simple (linearized) model and accurate model.A useful ellipse equation relative to trajectory stationkeeping points in an orbital plane is obtained.Dynamic characteristics of stationkeeping points and condtions of trajectory stability are also discussed.We finally present three control strategies of space berthing during the proximity phase of two spacecrfts and a method of spacekeeping point control.