典型文献
Pattern control for large-scale spacecraft swarms in elliptic orbits via density fields
文献摘要：
Space swarms,enabled by the miniaturization of spacecraft,have the potential capability to lower costs,increase efficiencies,and broaden the horizons of space missions.The formation con-trol problem of large-scale spacecraft swarms flying around an elliptic orbit is considered.The objective is to drive the entire formation to produce a specified spatial pattern.The relative motion between agents becomes complicated as the number of agents increases.Hence,a density-based method is adopted,which concerns the density evolution of the entire swarm instead of the trajec-tories of individuals.The density-based method manipulates the density evolution with Partial Dif-ferential Equations (PDEs).This density-based control in this work has two aspects,global pattern control of the whole swarm and local collision-avoidance between nearby agents.The global behav-ior of the swarm is driven via designing velocity fields.For each spacecraft,the Q-guidance steering law is adopted to track the desired velocity with accelerations in a distributed manner.However,the final stable velocity field is required to be zero in the classical density-based approach,which appears as an obstacle from the viewpoint of astrodynamics since the periodic relative motion is always time-varying.To solve this issue,a novel transformation is constructed based on the periodic solutions of Tschauner-Hempel (TH) equations.The relative motion in Cartesian coordinates is then transformed into a new coordinate system,which permits zero-velocity in a stable configura-tion.The local behavior of the swarm,such as achieving collision avoidance,is achieved via a carefully-designed local density estimation algorithm.Numerical simulations are provided to demonstrate the performance of this approach.
文献关键词：
中图分类号：
作者姓名：
Chihang YANG;Hao ZHANG;Weida FU
作者机构：
Key Laboratory of Space Utilization,Technology and Engineer Center for Space Utilization,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China;DFH Satellite Co.,Ltd,Beijing 100094,China
文献出处：
引用格式：
[1]Chihang YANG;Hao ZHANG;Weida FU-.Pattern control for large-scale spacecraft swarms in elliptic orbits via density fields)[J].中国航空学报（英文版）,2022(03):367-379
A类：
tories,astrodynamics,Tschauner,Hempel
B类：
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AB值：
0.535719
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