| 柔性空间结构选频二阶保结构平衡降阶 |
| |
| 引用本文： | 孟占峰,韩潮.柔性空间结构选频二阶保结构平衡降阶[J].航空学报,2011,32(3):410-420. |
| |
| 作者姓名： | 孟占峰 韩潮 |
| |
| 作者单位： | 1. 中国空间技术研究院总体部,北京,100094
2. 北京航空航天大学宇航学院,北京,100191 |
| |
| 摘 要： | 利用传统的一阶选频内平衡降阶方法进行降阶时,不但破坏了原二阶系统动力学结构,而且降阶过程中的选频Gramian矩阵的求解计算量大、数值稳定性差.利用解耦模态坐标的二阶柔性空间结构(FSS)方程的特殊性,给出了可控和可观Gramian矩阵的选频闭合解析解.为了将FSS动力学模型在指定频段进行降阶并保留原系统的二阶动力学结...
|
| 关 键 词： | 内平衡 降阶 二阶系统 柔性空间结构 选频 Gramian矩阵 |
| 收稿时间： | 2010-04-16; |
Frequency-selective Second-order Structure-preserving Balanced Reduction for Flexible Space Structures |
| |
| MENG Zhanfeng,HAN Chao.Frequency-selective Second-order Structure-preserving Balanced Reduction for Flexible Space Structures[J].Acta Aeronautica et Astronautica Sinica,2011,32(3):410-420. |
| |
| Authors: | MENG Zhanfeng HAN Chao |
| |
| Institution: | MENG Zhanfeng1,*,HAN Chao2 1.Institute of System Engineering,China Academy of Space Technology,Beijing 100094,China 2.School of Astronautics,Beihang University,Beijing 100191,China |
| |
| Abstract: | The conventional first-order frequency-selective internal balanced truncation can destroy the dynamical properties of flexible space structures(FSS).Moreover,the calculation of frequency-selective Gramians is ineffective and unstable.Therefore,a controllable and observable closed-form solution of frequency-selective Gramians is presented considering special second-order form of FSS equation via frequency definition of Gramians.Several new second-order frequency-selective model reduction methods are proposed... |
| |
| Keywords: | internal balanced reduction second-order system flexible space structures frequency-selective Gramian matrix |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空学报》浏览原始摘要信息 |
| 点击此处可从《航空学报》下载免费的PDF全文 |
|
