基于颤振试验数据分析的矩阵束方法性能研究

中国机械工程 ›› 2015, Vol. 26 ›› Issue (2): 233-237.

基于颤振试验数据分析的矩阵束方法性能研究

谭博;郑华

西北工业大学,西安,710072

出版日期:2015-01-25 发布日期:2015-01-23
基金资助:
国家自然科学基金资助项目(11302175)

Research on Numerical Performance of Matrix Pencil Based on Flutter Test Analysis

Tan Bo;Zheng Hua

Northwestern Polytechnical University,Xi'an,710072

Online:2015-01-25 Published:2015-01-23
Supported by:
National Natural Science Foundation of China（No. 11302175）

摘要/Abstract

摘要：

为将矩阵束引入颤振试验数据处理的工程应用领域,基于随机信号仿真,采用蒙特卡罗方法分析了该方法的数值性能,研究了样本长度、信噪比及计算参数对计算性能的影响,并在飞机机翼气弹模型的风洞颤振试验中进行了验证。与传统频域方法的比较分析表明,矩阵束方法性能良好,是一种可靠的模态参数估计方法。

关键词: 矩阵束, 蒙特卡罗方法, 模态参数识别, 颤振试验数据分析

Abstract:

In order to apply MP algorithm into flutter test data processing,the characteristics were studied through Monte Carlo method,the effects of signal length,signal-noise ratio and parameters were mainly concerned.Then MP algorithm was tested with real collected data from physical experiments.The results show that MP is a valuable method to identify modal parameters for flutter test analyzses compared with traditional ways of data processing.

Key words: matrix pencil(MP);Monte Carlo , method;modal parameter , identification;flutter test

中图分类号:

TP391.9

谭博, 郑华. 基于颤振试验数据分析的矩阵束方法性能研究[J]. 中国机械工程, 2015, 26(2): 233-237.

Tan Bo, Zheng Hua. Research on Numerical Performance of Matrix Pencil Based on Flutter Test Analysis[J]. China Mechanical Engineering, 2015, 26(2): 233-237.

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