| 频域主分量模态分析法及在颤振试飞中的应用 |
| |
| 引用本文： | 王东森,;王彤,;卢晓东,;周友明. 频域主分量模态分析法及在颤振试飞中的应用[J]. 中国测试技术, 2013, 0(6): 89-92 |
| |
| 作者姓名： | 王东森, 王彤, 卢晓东, 周友明 |
| |
| 作者单位： | [1]中国飞行试验研究院,陕西西安710089; [2]南京航空航天大学,江苏南京210016 |
| |
| 摘 要： | 为提高对颤振边界预测至关重要的模态阻尼的识别精度,基于频域多参考点法,采用主分量分析、奇异值分解和最小二乘技术,考虑频率响应函数负共轭部分和带外模态的影响,提出频域主分量分析模态参数识别方法,具有处理速度快、所需用户交互少的特点。通过飞机模型仿真算例验证在模态高度耦合情况下该方法的有效性,并在实际飞行颤振试验中进行应用。
|
| 关 键 词： | 飞行器试验技术 模态分析 主分量分析 阻尼估计 |
Frequency domain principal component modal analysis and its application in flight flutter test |
| |
| Affiliation: | WANG Dong-sen, WANG Tong, LU Xiao-dong, ZHOU You-ming(1. Chinese Flight Test E stablishment,Xi＇an 710089,China; 2. Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
| |
| Abstract: | A frequency domain principal component modal identification algorithm was presented to improve the precision of damping estimation in this paper. The techniques of principal component analysis,singular value decomposition and least-square estimation were utilized, and the influence of out-band modes and negative conjugate part of the frequency response functions were considered as well. The algorithm has the characteristics of fast running and little interaction. It was validated with a simulation example of GARTEUR airplane model with highly coupled modes,and was applied to the real flight flutter test. |
| |
| Keywords: | aircraft test technology modal analysis principal component analysis damping estimation |
| 本文献已被 维普 等数据库收录！ |
|
