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研究了基于C-W方程的航天器共面圆型快速绕飞问题。分析了2种受迫快速绕飞方法:第1种方法基于C-W方程的解析解,设计了轨道平面内近圆拼接绕飞轨迹,给出了拼接绕飞所需的控制脉冲;第2种方法设计了任意周期的圆型绕飞相对运动参考轨迹,并利用PD控制律对其跟踪。并给出了2种受迫绕飞方法的固定推力形式的控制律。精确轨道仿真结果表明2种方法都能实现对目标航天器轨道平面内的近圆型绕飞。相对于参考轨迹绕飞,拼接绕飞为非标准圆型轨迹,且绕飞周期固定,但是实现拼接绕飞所需的推力器控制开关机次数较少,速度增量也较小。
The problem of coplanar circular fast flying around spacecraft based on C-W equation is studied. Two kinds of forced-fly-by-fly method are analyzed. The first method is based on the analytical solution of CW equation, and the trajectory of near-circular splicing in orbit is designed. The second control pulse is given. A circular reference trajectory of circular orbit around the fly is designed and tracked by PD control law. Two kinds of control law of fixed thrust in forced flying method are given. Accurate orbit simulation results show that both methods can achieve near-circular fly-by within the orbit of the target spacecraft. Relative to the reference trajectory around the fly, splicing around the fly as a non-standard circular trajectory, and around the fly cycle fixed, but to achieve splicing around the fly thruster control switch fewer machines, the speed increase is also smaller.