arXiv:2409.13166cs.ROcs.AI2024-09中稿 · as an oral present…

提出梯度法联合优化模块化卫星形态与控制,提升姿态控制性能。

Morphology and Behavior Co-Optimization of Modular Satellites for Attitude Control

  • 用梯度法同时优化卫星结构和控制器,替代低效进化算法。
  • 蒙特卡洛仿真显示性能优于传统进化方法,提升任务表现。
  • 适合航天器设计、智能控制领域研究者参考。

模块化卫星的出现标志着航天器工程的重大变革,带来了灵活性、鲁棒性和可扩展性的新范式。在应对姿态控制等复杂挑战时,卫星的构型架构与控制器均对性能优化至关重要。尽管最优控制研究已相当深入,但针对特定任务约束的模块化卫星高效组装策略仍缺乏系统性优化方法。这一研究空白主要源于设计与控制联合优化的固有复杂性,即著名的双层优化循环。传统方法依赖人工演化,需基于控制器性能评估结构优劣,存在采样效率低、计算成本高的问题。本文提出一种新型基于梯度的方法,实现模块化卫星形态与控制的协同优化,显著提升其在姿态控制任务中的性能与效率。蒙特卡洛仿真结果表明,该方法生成的卫星在任务表现上优于进化方法设计的方案。此外,本文还探讨了未来研究方向。

原文摘要 · Abstract (English)

The emergence of modular satellites marks a significant transformation in spacecraft engineering, introducing a new paradigm of flexibility, resilience, and scalability in space exploration endeavors. In addressing complex challenges such as attitude control, both the satellite's morphological architecture and the controller are crucial for optimizing performance. Despite substantial research on optimal control, there remains a significant gap in developing optimized and practical assembly strategies for modular satellites tailored to specific mission constraints. This research gap primarily arises from the inherently complex nature of co-optimizing design and control, a process known for its notorious bi-level optimization loop. Conventionally tackled through artificial evolution, this issue involves optimizing the morphology based on the fitness of individual controllers, which is sample-inefficient and computationally expensive. In this paper, we introduce a novel gradient-based approach to simultaneously optimize both morphology and control for modular satellites, enhancing their performance and efficiency in attitude control missions. Our Monte Carlo simulations demonstrate that this co-optimization approach results in modular satellites with better mission performance compared to those designed by evolution-based approaches. Furthermore, this study discusses potential avenues for future research.

模块化卫星姿态控制协同优化

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