TY - GEN
T1 - Applications of time-frequency analysis for aging aircraft component diagnostics and prognostics
AU - Cho, Kwangik
AU - Coats, David
AU - Abrams, John
AU - Goodman, Nicholas
AU - Shin, Yong June
AU - Bayoumi, Abdel E.
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - The classical time-frequency distributions represent time- and frequency-localized energy. However, it is not an easy task to analyze multiple signals that have been simultaneously collected. In this paper, a new concept of non-parametric detection and classification of the signals is proposed using the mutual information measures in the time-frequency domain. The time-frequency-based self and mutual information is defined in terms of cross time-frequency distribution. Based on the time-frequency mutual information theory, this paper presents applications of the proposed technique to real-world vibration data. The baseline and misaligned experimental settings are quantitatively distinguished by the proposed technique.
AB - The classical time-frequency distributions represent time- and frequency-localized energy. However, it is not an easy task to analyze multiple signals that have been simultaneously collected. In this paper, a new concept of non-parametric detection and classification of the signals is proposed using the mutual information measures in the time-frequency domain. The time-frequency-based self and mutual information is defined in terms of cross time-frequency distribution. Based on the time-frequency mutual information theory, this paper presents applications of the proposed technique to real-world vibration data. The baseline and misaligned experimental settings are quantitatively distinguished by the proposed technique.
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U2 - 10.1117/12.795289
DO - 10.1117/12.795289
M3 - Conference contribution
AN - SCOPUS:57549108676
SN - 9780819472946
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Advanced Signal Processing Algorithms, Architectures, and Implementations XVIII
T2 - Advanced Signal Processing Algorithms, Architectures, and Implementations XVIII
Y2 - 10 August 2008 through 11 August 2008
ER -