中国空间科学技术

中国空间科学技术

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柔性充液航天器喷气控制系统稳定性分析

佘海鹰,曲广吉,李志,耿云海,杨涤   

  1. 北京空间飞行器总体设计部,哈尔滨工业大学
  • 发布日期:1997-12-25

STABILITY ANALYSIS OF JET-CONTROLLED SYSTEM FOR FLEXIBLE LIQUID-FILLED SPACECRAFT

She Haiying Qu Guangji Li Zhi(Beijing Institute of Spacecraft System Engineering,Beijing 100086)Geng Yunhai Yang Di(Harbin Institute of Technology,Harbin 150001))   

  • Online:1997-12-25
  • Supported by:
    高等学校博士学科点专项科研基金

被引次数

1

摘要： 主要讨论了伪速率喷气控制的柔性充液航天器系统的稳定性问题。首先建立了系统动力学模型，并简述了控制系统的设计；然后重点讨论了伪速率调制器的描述函数分析与计算方法；最后给出了采用Ｎｉｃｈｏｌｓ图法进行稳定性分析的工程应用实例。

关键词: 柔性航天器, 充液壳体, 非线性控制, 稳定性分析, Nichols图法

Abstract: The paper presents the stability analysis of pseudorate jet-controlled attitude system for spacecraft with large flexible solar arrays and liquid-filled tanks.A dynamic model including highly underdamped flexible and sloshing modes is used for system design.The dynamic characteristics of the modulator are discussed in detail,and the describing function is derived.Analysis approach is reviewed.Nonlinear stability analysis is performed using the describing function analysis of the modulator on a Nichols plot.