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Wavelet-based Frequency Response Function for time-variant systems-An exploratory study
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DOI：10.1016/j.ymssp.2013.03.011.png)
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摘要
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A wavelet-based Frequency Response Function (FRF) is proposed for vibration analysis of systems with time-varying parameters. The classical FRF is extended to a representation in the combined time-frequency domain using wavelet analysis. Time averaging is performed on the initial FRF to improve signal-to-noise ratio. It is shown that use of the wavelet ridge algorithm is effective in extracting and representing visually data from wavelet-based FRFs. The wavelet-based FRF is demonstrated on selected time-variant simulated lumped parameter systems and one experimental vibrating system. (C) 2013 Elsevier Ltd. All rights reserved.
Keyword:
Time-variant systems
Vibration analysis
Wavelet-based Frequency Response
Function
Wavelet analysis
Wavelet convolution
期刊
IF:
8.9
论文数:
1.3W
被引数:
6.6W
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