THE NOISE SIMULATION IN STRUCTURAL DAMAGE IDENTIFICATION

CAO Hui;LIN Xiu-ping

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (5) : 106-109.

PDF(1239 KB)
PDF(1239 KB)
Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (5) : 106-109.
论文

THE NOISE SIMULATION IN STRUCTURAL DAMAGE IDENTIFICATION

  • CAO Hui;LIN Xiu-ping
Author information +
History +

Abstract

By utilizing the stochastic subspace identification, modal parameters were extracted from simulating vibration signals contaminated with specified levels of noise. With the modal parameters identified from the signal without noise being as the standard, the errors with the standard of modal parameters from signals polluted by various levels of noise were obtained. So the error, i.e. the modal parameter noise, was related to the noise level of signals. A reasonable procedure of simulating noise for modal parameters was put forward. The requirement of damage identification on the signal noise ratio was also studied based on simulations.

Key words

damage identification / noise / vibration signal / stochastic subspace identification / modal parameter

Cite this article

Download Citations
CAO Hui;LIN Xiu-ping. THE NOISE SIMULATION IN STRUCTURAL DAMAGE IDENTIFICATION[J]. Journal of Vibration and Shock, 2010, 29(5): 106-109
PDF(1239 KB)

Accesses

Citation

Detail

Sections
Recommended

/