系统工程与电子技术

• 制导、导航与控制 • 上一篇    下一篇

基于广义混沌多项式方法的空间站转位不确定性分析

陈睿1, 唐胜景1, 孙国江2   

  1. (1. 北京理工大学宇航学院, 北京 100081; 2. 中国空间技术研究院, 北京 100094)
  • 出版日期:2017-08-28 发布日期:2010-01-03

Uncertainty analysis during space station redocking via generalized polynomial chaos

CHEN Rui1, TANG Shengjing1, SUN Guojiang2   

  1. (1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;
     2. China Academy of Space Technology, Beijing 100094, China)
  • Online:2017-08-28 Published:2010-01-03

摘要:

空间站转位是一个长周期过程,需要考虑环境以及自身系统的不确定性因素对整个过程的影响。使用Kane法建立了空间站系统转位的动力学模型,采用广义混沌多项式方法分析了在转位过程中不确定性因素对空间站姿态的影响。仿真结果表明,gPC方法的计算效率和精度优于蒙特卡罗抽样法,并且空间站若从“零状态”开始转位,则不确定性因素会对转位过程造成较大影响。

Abstract:

Space station redocking is a long period process which undergoes uncertainties from external environment and space station itself. A dynamic model of redocking is derived by the Kane method, then the generalized polynomial chaos method is used to analyze the influence on attitude motion caused by uncertainties. Numerical simulations show that the efficiency and accuracy of the gPC method is better than the Monte Carlo sampling method, and if redocking begins from the “zero state”, uncertainties cause great impact on the process.