Libration and end body swing stabilization of a parallel partial space elevator system

作     者：Gefei SHI Gangqiang LI Zheng H.ZHU Gefei SHI;Gangqiang LI;Zheng H.ZHU

作者机构：School of Aeronautics and AstronauticsSun Yat-Sen UniversityGuangzhou 510275China Department of Mechanical EngineeringYork UniversityTorontoOntario M3J 1P3Canada 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2021年第34卷第3期

页      面：187-199页

核心收录：

学科分类：08[工学] 082503[工学-航空宇航制造工程] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Discovery Grant (No. RGPIN2018-05991) Discovery Accelerate Supplement Grant (No. RGPAS-2018-522709) of Natural Sciences and Engineering Research Council of Canada Guangdong Basic and Applied Basic Research Foundation (No. 2019A1515111056) 

主　　题：Libration stabilization Nonlinear dynamics Optimal control Parallel partial space elevator Space tether 

摘      要：This paper studies the libration and stabilization of a parallel partial space elevator system in circular orbits. The system is made up of two paralleled partial space elevators, each of which consists of one main satellite, one end body and a climber moving along the tether between *** libration characteristics of the elevator are studied through numerical analysis by a new dynamic model, and a novel control strategy is proposed to stabilize the swing of the end body by projecting the climber speeds only. Optimal control method is used to implement the new control strategy in the case where the climbers move in opposite direction. The simulation results validate the effectiveness of the proposed control strategy whose application will neither sacrifice the transport efficiency nor exacerbate libration significantly.