基于时变磁力矩器驱动的航天器集群去中心化功率最优协调
Decentralized Power-Optimal Coordination for Spacecraft Swarms Using Time-Varying Magnetorquer Actuation
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- Institute of Science Tokyo（科学技术院）
- Japan Aerospace Exploration Agency（日本宇宙航空研究开发机构）
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中文总结 AI 辅助
本文提出去中心化功率最优协调框架，联合设计交互图、频率分组与控制器增益，实现磁驱动航天器集群的稳定成形与轨道重构，并经千星仿真验证。
中文摘要 AI 辅助
本文提出了一种用于磁驱动航天器集群的去中心化功率最优协调框架。形成大型空间结构的集群克服了运载火箭设定的孔径限制，并仅依靠太阳能发电保持其形状。磁驱动无需推进剂，由通常用于姿态控制的磁力矩器产生。然而，每艘航天器都会与范围内的其他航天器相互作用，其效果取决于驱动功率和载波频率。因此，我们设计了一个去中心化功率最优框架，以联合推导交互图、频率分组和控制器增益。我们的去中心化控制器保持角动量，这是一个非完整约束。然后，对于成员资格在载波间重叠的连接组，该框架保证相对位置误差、绝对姿态误差和反作用轮动量不平衡在去中心化功率最优分配下收敛到期望状态。对一千艘航天器在完整交流相互作用下的闭环仿真验证了该框架。一种具有已证明误差界的快速近似积分将该框架扩展到以高精度保持的长时程轨道重构。
英文摘要
This paper presents a decentralized power-optimal coordination framework for magnetically actuated spacecraft swarms. Swarms that form large space structures overcome the aperture limit set by the launch vehicle and hold their shape on solar-generated power alone. Magnetic actuation is propellant-free and generated by a magnetorquer, which is commonly used for attitude control. However, every spacecraft interacts with every other within range, and its effect depends on the actuation power and a carrier frequency. We therefore design a decentralized power-optimal framework to jointly derive the interaction graph, frequency grouping, and controller gains. Our decentralized controller preserves angular momentum, which is a nonholonomic constraint. Then, this framework for connected groups whose memberships overlap across carriers guarantees that the relative position errors, the absolute attitude errors, and the imbalance of the reaction-wheel momenta converge to the desired states under the decentralized power-optimal allocation. A closed-loop simulation of a thousand spacecraft with the complete alternating-current interaction confirms the framework. A fast approximate integration with a proven error bound extends the framework to a long-horizon orbital reconfiguration held with high precision.
