Constructing a wavelet-based envelope function for vibration signal analysis

doi:10.1016/S0888-3270(03)00046-3

Return

Constructing a wavelet-based envelope function for vibration signal analysis

2004-01-01

PRE

Sheen, YT

Hung, CK

DOI：10.1016/S0888-3270(03)00046-3

Original

Original request for help

Save

Abstract

En 中文

In this paper, a wavelet-based envelope function derived from Morlet wavelet is proposed to apply in the envelope extraction for vibration signal. It is a complex function constructed by an orthogonal function pair. With a systematic method, the function parameters can be designated. From numerical implementation, it is found that the wavelet-based envelope function has the satisfactory properties of fast waveform convergence, constant passband gain and less phase distortion. For practical interest, the wavelet-based envelope function with 3-dB cut-off frequency is presented and carried out on an IBM compatible computer with a TMS320C32 DSP interface card. Finally, it is shown that the wavelet-based envelope function could be effectively applied in the vibration envelope extraction for a roller bearing system. (C) 2003 Elsevier Science Ltd. All rights reserved.

AI Summary

Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.