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大型液体火箭姿控与跷振大回路耦合动力学建模与分析

王庆伟 谭述君 吴志刚 杨云飞 陈宇

王庆伟, 谭述君, 吴志刚, 杨云飞, 陈宇. 大型液体火箭姿控与跷振大回路耦合动力学建模与分析[J]. 力学学报, 2015, 47(5): 789-798. doi: 10.6052/0459-1879-15-137
引用本文: 王庆伟, 谭述君, 吴志刚, 杨云飞, 陈宇. 大型液体火箭姿控与跷振大回路耦合动力学建模与分析[J]. 力学学报, 2015, 47(5): 789-798. doi: 10.6052/0459-1879-15-137
Wang Qingwei, Tan Shujun, Wu Zhigang, Yang Yunfei, Chen Yu. DYNAMIC MODELING AND ANALYSIS OF LARGE-LOOP COUPLED BY ATTITUDE CONTROL AND POGO FOR LARGE LIQUID ROCKETS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 789-798. doi: 10.6052/0459-1879-15-137
Citation: Wang Qingwei, Tan Shujun, Wu Zhigang, Yang Yunfei, Chen Yu. DYNAMIC MODELING AND ANALYSIS OF LARGE-LOOP COUPLED BY ATTITUDE CONTROL AND POGO FOR LARGE LIQUID ROCKETS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 789-798. doi: 10.6052/0459-1879-15-137

大型液体火箭姿控与跷振大回路耦合动力学建模与分析

doi: 10.6052/0459-1879-15-137
基金项目: 国家自然科学基金(11072044,11372056)、高等学校博士点基金资助项目(20110041130001)和基本科研业务费(DUT15LK23)资助项目
详细信息
    通讯作者:

    谭述君,讲师,主要研究方向:飞行器动力学与控制.E-mail:tansj@dlut.edu.cn

  • 中图分类号: V448.2;V434.1

DYNAMIC MODELING AND ANALYSIS OF LARGE-LOOP COUPLED BY ATTITUDE CONTROL AND POGO FOR LARGE LIQUID ROCKETS

Funds: The project was supported by the General Program of the National Natural Science Foundation of China (11072044, 11372056), Doctoral Fund of Ministry of Education of China (20110041130001) and Funds of Central Universities (DUT15LK23).
  • 摘要: 大型液体火箭结构模态的空间化分布特征导致结构振动、姿态运动和推进系统液路脉动存在相互耦合,进而影响传统姿控回路的稳定性. 针对大型液体火箭, 充分考虑姿态控制系统对箭体姿态动力学和弹性振动的影响, 以及箭体结构弹性振动与推进系统的耦合作用(跷振(POGO)), 建立了姿控与跷振大回路耦合模型. 该模型包含了推进系统、结构系统与姿控系统之间的耦合因素, 可进行姿控-结构-推进大回路耦合机理研究. 该模型具有非奇异的优点, 可以直接用于频域分析和时域仿真. 基于该模型研究了我国某型号液体捆绑火箭推进系统参数——泵增益和蓄压器能量值对姿态运动与结构振动稳定性的影响. 研究得出, 泵增益和蓄压器能量值的变化不仅导致了结构振动的不稳定, 而且也导致了姿态运动的发散. 因此, 对于大型液体捆绑火箭, 推进系统与姿控系统之间存在不可忽略的耦合作用, 在设计姿控系统时, 有必要考虑推进系统对姿控系统稳定性的影响.

     

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出版历程
  • 收稿日期:  2015-04-20
  • 修回日期:  2015-06-15
  • 刊出日期:  2015-09-18

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