基于非奇异快速终端滑模的自适应平滑控制方法用于立方星编队飞行分布式空间望远镜演示任务
Adaptive Smooth Control via Nonsingular Fast Terminal Sliding Mode for Distributed Space Telescope Demonstration Mission by CubeSat Formation Flying
AI总结：
本文针对立方星编队飞行的分布式空间望远镜演示任务，提出一种基于非奇异快速终端滑模的自适应平滑控制方法，通过仅含七个可调参数和解析误差界限的设计，在仿真中验证了其在对准时间和燃料消耗上优于LQR和PD控制。
摘要：
本文提出了一种基于非奇异快速终端滑模的自适应平滑控制方法，用于分布式空间望远镜演示任务。该分布式空间望远镜具有灵活的焦距，该焦距对应于编队飞行概念中的相对位置。立方星的有限规格通常限制了执行器的性能，最关键的是受控运动的自由度。这项研究促成了通过非奇异快速终端滑模开发自适应平滑控制方法。针对单输入单输出系统开发的自适应平滑控制算法被采纳并扩展到分布式空间望远镜的相对轨道和姿态控制系统。软件仿真在真实任务条件下进行，即采用真实的立方星结构、硬件规格和操作约束。所提出的算法仅包含七个参数，考虑到它们的物理意义，这些参数可以很容易地调整。此外，预先指定的误差界限通过解析方法推导得出，这增强了该算法在实际任务中的适用性。仿真将自适应平滑非奇异快速终端滑模控制器与线性二次调节器和比例微分算法的效率进行了比较。结果验证了自适应平滑非奇异快速终端滑模控制算法在分布式空间望远镜演示任务的对准时间和燃料消耗方面表现出更好的控制性能。
英文摘要：
This paper presents a nonsingular fast terminal sliding mode-based adaptive smooth control methodology for a distributed space telescope demonstration mission. The distributed space telescope has a flexible focal length that corresponds to the relative position in the formation flying concept. The limited specification of a CubeSat generally restricts the performance of actuators, most critically the degrees of freedom of controlled motion. This investigation leads to the development of an adaptive smooth control methodology via nonsingular fast terminal sliding modes. The adaptive smooth control algorithm that was developed for a single-input single-output system is adopted and extended to the relative orbit and attitude control systems of the distributed space telescope. The software simulation is conducted under a real mission, which means the real CubeSat structures, hardware specifications, and operational constraints. The proposed algorithm possesses only seven parameters that can be easily adjusted considering their physical meanings. Furthermore, the pre-designated error bounds are analytically derived, which enhances the applicability of the algorithm to real missions. The simulation compares the efficiency of the adaptive smooth nonsingular fast terminal sliding mode controller with the linear quadratic regulator and proportional derivative algorithms. The results verify that the adaptive smooth nonsingular fast terminal sliding mode control algorithm shows better control performance in the perspective of the alignment time and the fuel consumption for the distributed space telescope demonstration mission.
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。
