Extreme Learning Machine Based on Stationary Wavelet Singular Values for Bearing Failure Diagnosis
Nibaldo RODRIGUEZ1, Carolina LAGOS1*, Enrique CABRERA2, Lucio CAÑETE3
1 Pontificia Universidad Católica de Valparaíso Av Brasil 2241, Valparaíso, 2362807, Chile
2 CIMFAV, Universidad de Valparaíso General Cruz 559, Valparaíso, 2363326, Chile
3 Universidad de Santiago de Chile Av. Ecuador 3769, Santiago, 9170124, Chile
ABSTRACT: Intelligence condition monitoring based on vibration signal analysis plays a key role in improving rolling bearings failure diagnosis in mechanical transmission systems. Unexpected failures in the bearings may cause machine breakdowns that are very expensive for the industry. Hence, this study proposes a method to the rolling element bearing failure diagnosis which is based on an extreme learning machine (ELM) algorithm combined with stationary wavelet transform (SWT) and singular value decomposition (SVD). The SWT is used to separate the vibration signals into a series of wavelet component signals. Then, the obtained wavelet components matrix is decomposed by means of a SVD method to obtain a set of wavelet singular values. Finally, the wavelet singular values are used as input to the extreme learning machine for classification among ten different bearing failure types. Obtained results using the proposed model shown high accuracy of diagnosis under variable speed condition.
KEYWORDS: Extreme learning machine, wavelet analysis, singular value decomposition, bearing failure diagnosis.
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Nibaldo RODRIGUEZ, Carolina LAGOS*, Enrique CABRERA, Lucio CAÑETE, Extreme Learning Machine Based on Stationary Wavelet Singular Values for Bearing Failure Diagnosis, Studies in Informatics and Control, ISSN 1220-1766, vol. 26(3), pp. 287-294, 2017.