中国空间科学技术

中国空间科学技术

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利用大气阻力的横向编队维持控制

陈统;徐世杰;李克行;   

  1. 北京航空航天大学;北京控制工程研究所;
  • 发布日期:2008-12-25

Control Strategy Using Atmospheric Drag for Along-track Formation Maintenance

Chen Tong1 Xu Shijie1 Li Kehang2(1 Beijing University of Aeronautics and Astronautics,Beijing 100083)(2 Beijing Institute of Control Engineering,Beijing 100080)   

  • Online:2008-12-25

被引次数

2

摘要： 研究了航天器在近圆轨道面内横向固定间隔距离内伴飞编队维持问题。基于经典轨道要素偏差法分析了相对运动特性和大气阻力对相对运动的影响。根据利用大气阻力引起的横向相对运动漂移,设计了有利于长期伴飞编队维持的初始半长轴偏差和伴飞边界点的期望半长轴偏差,进一步给出了进行伴飞维持的边界点横向速度脉冲。仿真结果表明,该控制策略进行伴飞编队维持是可行的,维持所需的速度脉冲次数少、速度增量小,且算法简单,有利于航天器自主化实现。

关键词: 编队飞行, 轨道控制, 经典轨道要素偏差法

Abstract: A maintenance control strategy for formation spacecraft flying in a near-circular orbit with fixed along-track distance tolerance was presented.By using the classical orbit element differences method,the periodic characteristics of relative motion and the influence of atmospheric drag on relative motion were analyzed.Using the relative drifts of along-track motion caused by atmosphere drag,the initial semi-major axis difference and the expected semi-major axis differences at the bounds of along-track tolerance box for the long time formation maintenance were designed.Afterwards,the along-track maintenance impulsive delta-velocities implemented at the bounds were given.Numerical simulation results indicate that the formation maintenance control strategy is feasible and requires fewer times of impulse and less velocity increment.Furthermore,the control algorithm is simple to be implemented autonomously by spacecraft.