| 摘要: |
| 研究了航天器多约束交会的仅测角导航最优多目标闭环制导问题，优化目标包括交会时间、燃耗和仅测角导航可观性指标，并考虑了视觉传感器视场角、推力器推力幅度和最小安全距离等各种约束条件，建立了多约束、多目标优化下的仅测角导航和闭环制导问题的数学模型，分析了仅测角导航和闭环制导之间的耦合关系。最后，通过Matlab遗传算法工具箱中的多目标优化函数,求解得到了该多目标优化模型的Pareto最优解集，结果显示交会时间、燃耗和仅测角导航可观性指标不能同时达到最优，存在相互制约关系，即提高其中一种优化目标的性能会降低其他优化目标的性能。 |
| 关键词: 仅测角导航 航天器多约束交会 多目标优化 闭环制导 Pareto最优 |
| DOI： |
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| 基金项目:上海航天科技创新基金(SAST 2020-019)；江苏省自然科学基金(BK20180465) |
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| Optimal Multi-Objective Closed-Loop Guidance with Angles-Only Navigation for Spacecraft Multi-Constrained Rendezvous |
| DU Ronghua,LIAO Wenhe,ZHANG Xiang |
| (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China) |
| Abstract: |
| The optimal multi-objective closed-loop guidance with angles-only navigation for spacecraft multi-constrained rendezvous is studied. The optimization objectives include rendezvous time, fuel cost, and observability of angles-only navigation, and various constraints such as the field of view of vision sensor, the thrust magnitude, and the minimum safe distance are considered. A mathematical model of angles-only navigation and closed-loop guidance with multi-constraint and multi-objective optimization is established, and the coupling relationship between angles-only navigation and closed-loop guidance is analyzed. Finally, the Pareto optimal solution set of the multi-objective optimization model is obtained by using the multi-objective optimization function in the Matlab genetic algorithm toolbox. The results show that the rendezvous time, fuel cost, and observability of angles-only navigation can not reach the optimal value at the same time, and there are mutual constraints between them. That is, improving the performances of one of the optimization objectives degrades the performances of the other optimization objectives. |
| Key words: Angles-only navigation Spacecraft multi-constrained rendezvous Multi-objective optimization Closed-loop guidance Pareto optimality |
