Dynamic modeling and control strategy for tethered satellite systems in orbital debris management  

绳系卫星在轨碎片管理的动力学建模与控制方法研究

作　　者：Feng Gao Jiayang Li Fuxiang Dong Yi Ji Guanghui Sun 高峰;李佳洋;董富祥;季奕;孙光辉

机构地区：[1]School of Astronautics,Harbin Institute of Technology,Harbin 150001,China [2]Institute of Telecommunication and Navigation Satellites,China Academy of Space Technology,Beijing 100094,China

出　　处：《Acta Mechanica Sinica》2025年第2期204-215,共12页力学学报(英文版)

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.62173107 and 12202058);the Young Elite Scientists Sponsorship Program by Beijing Association for Science and Technology(Grant No.BYESS2023344).

摘　　要：The increasing accumulation of space debris threatens the integrity and functionality of satellites and complicates orbital operations.This paper constructs an advanced rigid-flexible coupling dynamic model for tethered satellite systems,tailored to enhance space debris management.Utilizing the nodal position finite element method,the model significantly improves the precision of simulating tether dynamics and captures the complex interactions involving satellite and debris attitude dynamics.This advancement allows for detailed examination of potential tether entanglements and provides crucial data for optimizing deorbiting processes.To overcome the limitations of conventional control techniques,a robust adaptive sliding mode control strategy is developed.This approach is specifically designed to manage the unpredictable conditions of the low-Earth orbit and ensure precise satellite attitude control,critical for successful debris removal.Validated through extensive numerical simulations,our model and control strategy demonstrate substantial improvements in operational reliability and safety,significantly enhancing the success rate of deorbiting missions.随着太空碎片的数量不断增加,这些碎片不仅威胁到在轨卫星的安全运行,还对维持轨道秩序提出了更大的挑战.本文提出了一种绳系卫星系统的刚柔耦合动力学模型,用以精确模拟和优化太空碎片清除过程中的动态行为,从而提高清除任务的效率与安全性.模型采用节点位置有限元方法,显著提高了绳系动态行为的模拟精度,并详细分析了绳系与卫星及碎片之间的姿态动力学影响.此外,该模型能够预测绳系的潜在缠绕风险,为设计有效的碎片离轨策略提供支持.考虑到低地球轨道环境的不确定性,本文提出了一种自适应滑模控制策略,以确保卫星姿态的精确控制.数值模拟验证表明,所提模型和控制策略有效提升了太空碎片清除任务的可靠性和安全性,增加了碎片离轨任务的成功率.

关 键 词：Space debris management Tethered satellite systems Rigid-flexible coupling Sliding mode control 

分 类 号：V476[航空宇航科学与技术—飞行器设计]