用落塔实验验证可重构卫星的非完整姿态控制模型。
Model Evaluation of a Transformable CubeSat for Nonholonomic Attitude Reorientation Using a Drop Tower
- 通过关节顺序驱动实现短时微重力下的敏捷姿态调整。
- 实验数据验证数值模型准确，修正后精度进一步提升。
- 适合航天器结构可重构设计与微重力测试研究者参考。
本文提出一种针对可重构航天器（具可动关节）的数值模型评估方案，采用3U尺寸的模拟机器人在落塔微重力环境中进行测试。该机器人通过特定顺序激活关节，实现非完整姿态控制下的快速姿态重定向。为适应落塔中极短的微重力持续时间（约4.7秒），优化了连续关节驱动策略以最大化姿态调整量。机器人记录四个体段的角速度历史数据，用于评估数值模型的准确性。结果表明，构建的数值模型能充分复现机器人运动，且实验后模型修正显著提升了仿真精度。最后讨论了落塔测试与实际轨道演示之间的差异，展望了该方法的应用前景。
原文摘要 · Abstract (English)
This paper presents a design for a drop tower test to evaluate a numerical model for a structurally reconfigurable spacecraft with actuatable joints, referred to as a transformable spacecraft. A mock-up robot for a 3U-sized transformable spacecraft is designed to fit in a limited time and space of the microgravity environment available in the drop tower. The robot performs agile reorientation, referred to as nonholonomic attitude control, by actuating joints in a particular manner. To adapt to the very short duration of microgravity in the drop tower test, a successive joint actuation maneuver is optimized to maximize the amount of attitude reorientation within the time constraint. The robot records the angular velocity history of all four bodies, and the data is analyzed to evaluate the accuracy of the numerical model. We confirm that the constructed numerical model sufficiently replicates the robot's motion and show that the post-experiment model corrections further improve the accuracy of the numerical simulations. Finally, the difference between this drop tower test and the actual orbit demonstration is discussed to show the prospect.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。