基于HHT的明清官式古建筑的模态参数识别方法

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (20) : 75-80.

论文

胡浩然1，2，杨娜1

作者信息 +

A modal parameter identification method for a timber structure based on HHT

HU Haoran1，2，YANG Na1

Author information +

文章历史 +

摘要

本文提出了一种基于HHT方法的结构模态参数识别技术，并结合故宫木结构古建筑现场实测，探讨结合SSA (Singular Spectrum Analysis)的HHT(Hilbert-Huang Transform)方法在低信噪比信号模态识别中的应用。为了分析结合SSA的HHT方法的性能，用结合SSA的HHT方法和普通的HHT方法分别识别通过数值模拟得到的不同信噪比的数据信号，并对识别结果进行分析，对比表明该方法在低信噪比信号处理上有就好的识别效果，并运用在故宫木结构参数识别上。

Abstract

In this paper, a new method was investigated for operational modal parameter identification to deal with signals in low SNR level.In order to analyze the performance of the new method, numerical simulation data signals of different SNR levels were identified by the new method and the normal HHT method.The results were analyzed.The comparison shows that the method has a better recognition effect on low SNR signal processing, and can be used in the timber structural parameters identification.

导出引用

胡浩然1，2，杨娜1. 基于HHT的明清官式古建筑的模态参数识别方法[J]. 振动与冲击, 2018, 37(20): 75-80

HU Haoran1，2，YANG Na1. A modal parameter identification method for a timber structure based on HHT[J]. Journal of Vibration and Shock, 2018, 37(20): 75-80

参考文献

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