CAJ | 학술논문

详细研究了多柔体系统动力学模型的特征值降阶问题，针对挠性空间飞行器系统的姿态动力学方程，推导出基于Riccati迭代算法的特征值模态截断准则和计算步骤。分析结果表明，它较一般特征值截断准则更能精确地反映原系统特性，并且能准确地保留原系统低阶模态频率和振型。其模态截断后动力响应曲线与原系统吻合较好。
상세연구료다유체계통동역학모형적특정치강계문제，침대뇨성공간비행기계통적자태동역학방정，추도출기우Riccati질대산법적특정치모태절단준칙화계산보취。분석결과표명，타교일반특정치절단준칙경능정학지반영원계통특성，병차능준학지보류원계통저계모태빈솔화진형。기모태절단후동력향응곡선여원계통문합교호。
This paper expounds the problem on eigenvalue reduced-order forflexible umltibody system model, and derives the eigenvalue modal reduced-order oriterion and calculation steps based on Riccati iteration algorithm in accordance with attitude dynamics of flexible spacecraft system.Analysis results indicate that it can reflect better the basic characteristics of the original system than usually eigenvalue truncation criterion and exactly preserve the lower frequencies and mode shapes of the original system.Dynamic response curves of reduced-order model accord better with original system.