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

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (20) : 75-80.

HU Haoran1，2，YANG Na1

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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.

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Modal parameters identification / SNR / noise / timber structural / ambient excitation.

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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

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