Title: Comparative Study Between CWT and STFT for On-Line Health Monitoring Applications in Systems Under Random Excitation
Abstract: Abstract Two time-frequency signal analysis methods, based on results of Continuous Wavelet Transform, and the Short Time Fourier Transform are compare for the purpose of on-line health monitoring application in systems subjected to random loads. A classic example with a simple signal is used to differentiate the characteristics of the two transforms suggesting the possible preference of a Wavelet Transform based approach over the Short Time Fourier Transform. Another example including a single degree of freedom system subjected to random loads proves how the inherent variable window capabilities on the Wavelet Transform perform better than the constant window length nature of the Short Time Fourier Transform for on-line health monitoring application.
Publication Year: 2001
Publication Date: 2001-09-09
Language: en
Type: article
Indexed In: ['crossref']
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