arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2409.01490math.OC
收藏

基于间接法的最小燃料低推力轨迹设计中控制正则化技术的比较

Comparison of control regularization techniques for minimum-fuel low-thrust trajectory design using indirect methods

Saeid Tafazzol, Ehsan Taheri, Nan Li

AI总结:

本文针对最小燃料低推力轨迹中推力开关切换导致的边值问题求解困难,比较了双曲正切平滑与新型L2范数平滑对拟牛顿法收敛性的影响,并验证了其在基准问题中的有效性。

摘要:

最小燃料低推力轨迹通常在其推力幅值剖面中包含有限但未知数量的开关切换。最小燃料轨迹的这一最优性驱动特性对通常用于求解相应哈密顿边值问题(BVPs)的数值方法构成了挑战。本文比较了流行的基于双曲正切的平滑方法与一种新颖的基于L2范数的平滑方法对拟牛顿梯度类方法收敛性能的影响。两种平滑方法均直接施加在控制层面,从而在实现上具有显著的简便性。我们还研究了在利用状态转移矩阵(STM)精确计算所得BVPs残差向量对未知初始协态值的灵敏度时,每种方法的应用情况。通过在多个基准最小燃料低推力轨迹优化问题上评估了每种控制平滑方法的有效性。

英文摘要:

Minimum-fuel low-thrust trajectories typically consist of a finite, yet unknown number of switches in the thrust magnitude profile. This optimality-driven characteristic of minimum-fuel trajectories poses a challenge to the numerical methods that are typically used for solving the resulting Hamiltonian boundary-value problems (BVPs). In this paper, we compare the impact of the popular hyperbolic-tangent-based smoothing with a novel L2-norm-based smoothing on the convergence performance of quasi-Newton gradient-based methods. Both smoothing methods are applied directly at the level of control, which offer a significant implementation simplicity. We also investigate the application of each method in scenarios where the State Transition Matrix (STM) is used for accurate calculation of the sensitivities of the residual vector of the resulting BVPs with respect to the unknown initial costate values. The effectiveness of each control smoothing method is assessed across several benchmark minimum-fuel low-thrust trajectory optimization problems.

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。

↑