Parallel Monotonic Basin Hopping for Low Thrust Trajectory Optimization

McCarty, Steven L ; McGuire, Melissa L

关键词: ALGORITHMS;    LOW THRUST;    TRAJECTORY OPTIMIZATION;    STOCHASTIC PROCESSES;    CISLUNAR SPACE;   

RP-ID  :  GRC-E-DAA-TN49959

学科分类：天文学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Monotonic Basin Hopping has been shown to be an effective method of solving low thrust trajectory optimization problems. This paper outlines an extension to the common serial implementation by parallelizing it over any number of available compute cores. The Parallel Monotonic Basin Hopping algorithm described herein is shown to be an effective way to more quickly locate feasible solutions, and improve locally optimal solutions in an automated way without requiring a feasible initial guess. The increased speed achieved through parallelization enables the algorithm to be applied to more complex problems that would otherwise be impractical for a serial implementation. Low thrust cislunar transfers and a hybrid Mars example case demonstrate the effectiveness of the algorithm. Finally, a preliminary scaling study quantifies the expected decrease in solve time compared to a serial implementation.,