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针对地月系L2平动点附近两种常用轨道——拟halo轨道和Lissajous轨道,研究了轨道长期维持过程。采用穿越xz平面单圈控制的轨道维持策略,控制量通过单步预测法进行寻优。在全摄动动力学模型下对拟halo轨道和Lissajous轨道受控维持下的一年飞行过程分别进行了仿真和比较,结果显示Lissajous轨道的维持控制代价优于拟halo轨道,从轨道拓扑构型保持方面对该结果进行解释,并设计对比实验加以验证。研究结论对地月系L2平动点轨道选择、维持控制策略设计、长期飞行效果分析等方面具有工程参考意义。
Aiming at the two kinds of common orbits, the pseudo halo and the Lissajous orbits, near the L2 translational point of the Earth-Moon system, the long-term orbit maintenance is studied. Adopting the orbital maintenance strategy which is controlled by the single lap of xz plane, the control volume is optimized by single-step prediction method. Under full-perturbation dynamic model, the simulation and comparison of one year’s flight under controlled and maintained pseudo-halo and Lissajous orbit are carried out respectively. The results show that Lissajous orbit is superior to pseudo-halo orbit, Maintain the results of the explanation, and the design of comparative experiments to be verified. The conclusion of the study has engineering reference meaning for the selection of orbit control of L2 geostationary point of Earth and moon system, the design of control strategy and the analysis of long-term flight effect.