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含间隙铰接的柔性航天器刚柔耦合动力学与控制研究

孙杰 孙俊 刘付成 朱东方 黄静

孙杰, 孙俊, 刘付成, 朱东方, 黄静. 含间隙铰接的柔性航天器刚柔耦合动力学与控制研究[J]. 力学学报, 2020, 52(6): 1569-1580. doi: 10.6052/0459-1879-20-109
引用本文: 孙杰, 孙俊, 刘付成, 朱东方, 黄静. 含间隙铰接的柔性航天器刚柔耦合动力学与控制研究[J]. 力学学报, 2020, 52(6): 1569-1580. doi: 10.6052/0459-1879-20-109
Sun Jie, Sun Jun, Liu Fucheng, Zhu Dongfang, Huang Jing. DYNAMICS AND CONTROL OF RIGID-FLEXIBLE COUPLING FLEXIBLE SPACECRAFT WITH JOINT CLEARANCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1569-1580. doi: 10.6052/0459-1879-20-109
Citation: Sun Jie, Sun Jun, Liu Fucheng, Zhu Dongfang, Huang Jing. DYNAMICS AND CONTROL OF RIGID-FLEXIBLE COUPLING FLEXIBLE SPACECRAFT WITH JOINT CLEARANCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1569-1580. doi: 10.6052/0459-1879-20-109

含间隙铰接的柔性航天器刚柔耦合动力学与控制研究

doi: 10.6052/0459-1879-20-109
基金项目: 1) 国家自然科学基金资助项目(11772185);国家自然科学基金资助项目(61903245);国家自然科学基金资助项目(61803258)
详细信息
    作者简介:

    2) 孙俊,研究员,主要研究方向:航天器动力学与控制. E-mail: sjlovedh@hotmail.com

    通讯作者:

    孙俊

  • 中图分类号: V414.3,V448.2

DYNAMICS AND CONTROL OF RIGID-FLEXIBLE COUPLING FLEXIBLE SPACECRAFT WITH JOINT CLEARANCE

  • 摘要: 大型柔性航天器展开锁定后,运动副中仍存在大量无法消除的间隙. 铰链间隙直接影响柔性航天器的姿态 运动和有效载荷的指向精度及稳定度,会对航天器的动力学特性造成较大的影响. 针对这一问题, 提出一种含间隙铰 接的航天器刚柔耦合动力学建模与控制方法. 首先建立含间隙的铰链精确动力学模型,从而构建含间隙铰接的柔性结构 动力学模型. 然后利用哈密顿原理和模态离散方法,建立含间隙铰接柔性航天器离散形式的刚柔耦合非线性动力学 模型,采用 Newmark 算法对非线性动力学方程进行求解. 基于压电纤维复合材料 (macro fiber composite, MFC) 驱动器 构建航天器的刚-柔-电耦合动力学方程,采用最优控制设计控制律. 分析了铰链参数、中心刚体转动惯量、间隙尺寸和间隙数目对航天器动力学特性的影响,着重研究了铰链间隙对航天器姿态运动和结构振动的影响作用. 最后采用 MFC 驱动器对航天器施加主动控制. 结果表明,铰链参数和中心刚体转动惯量影响航天器的固有频率;随着铰链间隙尺寸的增大及间隙数目的增多,航天器的整体刚度逐渐减小,而航天器的姿态角和振动位移响应不断增大;通过基于 MFC 的主动控制,能够实现含间隙铰接航天器姿态运动与结构振动的协同控制,并缓解间隙对系统动态特性造成的影响.

     

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出版历程
  • 收稿日期:  2020-04-14
  • 刊出日期:  2020-12-10

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