中国空间科学技术

中国空间科学技术

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基于θ-D非线性控制方法的伴随轨道控制

罗建军;周文勇;袁建平;   

  1. 西北工业大学航天学院;
  • 发布日期:2009-04-25

Periodic Relative Motion Control Based on theθ-D Nonlinear Control Method

Luo Jianjun Zhou Wenyong Yuan Jianping (College of Astronautic,Northwestern Polytechnical University,Xian 710072)   

  • Online:2009-04-25
  • Supported by:
    国家863计划课题;; 高等学校博士学科点专项科研基金(20070699030)

被引次数

7

摘要： 为了实现燃料消耗最少的伴随轨道控制,研究使用θ-D次优非线性控制方法设计伴随轨道的优化控制律。相对运动模型中考虑了地球形状摄动的影响,且适用于在椭圆轨道上运行的目标航天器。采用状态变量增广法,对相对运动模型进行处理,以满足θ-D控制方法的要求。采用相对轨道要素设计了理想的基准伴随轨道。仿真计算结果表明,所设计的控制律是稳定的,能够以较少的燃料消耗实现伴随轨道的控制。

关键词: θ-D非线性控制方法, 相对运动模型, 伴随轨道, 轨道控制

Abstract: In order to maintain 1ong-term periodic relative motion trajectory with minimum fuel consumption,an optimal control method based onθ-D nonlinear control technique was investigated. A relative motion model,considering the J_2 perturbation and suitable for motion in general elliptic orbit,was used.Theθ-D nonlinear controI law was developed tO control the relative motion by dealing with the model of relative motion by the method of extending the state variables.The periodic relative orbit was designed based on the relative orbit elements and the mission requirements.Simulation results indicate that the proposed control method can carry out the suboptimal control of the periodic relative motion.

Key words: θ-D nonlinear control method, Relative motion model, Periodic relative motion, Orbital control, Spacecraft