视场约束的交会对接V-bar撤离控制研究

利用解析和数值结合的方法研究了在视场约束条件下交会对接V-bar撤离的控制问题。描述了交会对接V-bar撤离的径向冲量机动方案，说明了径向机动撤离方案具有减少羽流污染和故障情况下能够避免飞行器碰撞的优点。基于CW方程推导出了机动点位于V-bar上的特殊情况下径向冲量和视场角的解析公式，同时也得到了求最大视场角时刻和冲量作用后V-bar方向撤离距离的计算公式。对于任意机动点的一般情况，得到了求解径向冲量和视场角关系的非线性方程，这一方程可利用数值方法求解。最后，通过数值仿真验证了该方法的正确性。

The V-bar Departure Control in Rendezvous and Docking Under Field of View Constraint

The control of V-bar departure in rendezvous and docking under field of view constraint is studied using both analytic and numerical methods. The basic maneuver strategy of V-bar departure using radial impulse is described, and the strategy fulfils the requirements of minimum plume impact on the target and trajectory safety. The analytic solution between field of view and radial impulse is developed based on CW equation for impulse point located on V-bar, and the other solution includes the formulas to calculate the time of maximum field of view and departure distance on the V-bar direction. For general case the nonlinear equation between field of view and radial impulse is developed, and can be solved using numerical method. At last, two examples are calculated, and the results show that the method developed in this paper is correct.