一种以燃耗为优化目标的航天器在轨加注作业调度

Mission Scheduling for On-orbit Spacecraft Refueling with Optimized Fuel Consumption during Orbital Maneuver

针对基于空间燃料站的多目标航天器在轨加注任务,以GEO航天器为加注对象,对"多对多"模式的航天器在轨加注作业调度问题进行研究。首先以轨道转移燃耗为优化目标,考虑时间、燃料等约束条件,建立了在轨加注作业调度问题的数学模型。模型中,通过设计优化变量,结合多圈Lambert问题中速度增量与转移时间的关系,将航天器在轨加注作业调度问题转换成整数规划问题,在此基础上,采用遗传算法对其求解。然后以14颗GEO轨道航天器作为目标航天器进行数值仿真计算,并对仿真结果进行分析,验证解的正确性以及算法的可行性,结果表明算法能够有效地解决基于空间燃料站的在轨加注调度问题。

Mission scheduling of on-orbit refueling for multiple geostationary spacecraft based on propellant depot was studied.First,a mathematic model of the mission scheduling was established by taking the orbit transfer propellant consumption as the optimization target,while time and fuel as the constraints.In the model,the mission scheduling of on-orbit refueling was converted into the in-teger programming problem by designing the optimization variables and considering the relationship between the velocity increment and the transfer time of orbital maneuver.The problem was solved by the genetic algorithm.In the end,an example of simulation was given where 14 geosynchronous sat-ellites were taken as the objects.The simulation results demonstrated the effectiveness and validity of the proposed algorithm.