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Constructing a wavelet-based envelope function for vibration signal analysis
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DOI：10.1016/S0888-3270(03)00046-3.png)
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摘要
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.
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期刊
IF:
8.9
论文数:
1.3W
被引数:
6.6W
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