arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.08813math.OCcs.SYeess.SY
收藏

小推力轨道设计的多目标最小时间最优控制

Multi-objective minimum time optimal control for low-thrust trajectory design

Nikolaus Vertovec, Sina Ober-Blöbaum, Kostas Margellos

摘要:

针对小推力航天器轨道设计的无限和有限时域多目标最优化问题,提出了一种可达性方法。该方法的主要优点是可以有效地从Hamilton-Jacobi-Bellman方程解的零水平集构造Pareto前沿。我们证明了所提出的方法,将其应用到一个小推力航天器的轨道设计问题。通过推导哈密顿量的解析表达式和最优控制策略,我们能够有效地计算向后可达集和重构最优轨迹。此外,我们将保证任何重建的轨迹是弱帕累托最优的。该方法可作为未来研究的基准,可达性分析应用于小推力航天器轨道设计。

英文摘要:

We propose a reachability approach for infinite and finite horizon multi-objective optimization problems for low-thrust spacecraft trajectory design. The main advantage of the proposed method is that the Pareto front can be efficiently constructed from the zero level set of the solution to a Hamilton-Jacobi-Bellman equation. We demonstrate the proposed method by applying it to a low-thrust spacecraft trajectory design problem. By deriving the analytic expression for the Hamiltonian and the optimal control policy, we are able to efficiently compute the backward reachable set and reconstruct the optimal trajectories. Furthermore, we show that any reconstructed trajectory will be guaranteed to be weakly Pareto optimal. The proposed method can be used as a benchmark for future research of applying reachability analysis to low-thrust spacecraft trajectory design.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑