Please use this identifier to cite or link to this item: https://doi.org/10.1109/TIE.2018.2844856
Title: Estimation of bearing remaining useful life based on multiscale convolutional neural network
Authors: ZHU JUN 
CHEN NAN 
PENG WEIWEN 
Issue Date: 22-Jun-2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Citation: ZHU JUN, CHEN NAN, PENG WEIWEN (2018-06-22). Estimation of bearing remaining useful life based on multiscale convolutional neural network. IEEE Transactions on Industrial Electronics 66 (4) : 3208-3216. ScholarBank@NUS Repository. https://doi.org/10.1109/TIE.2018.2844856
Abstract: Bearing remaining useful life (RUL) prediction plays a crucial role in guaranteeing safe operation of machinery and reducing maintenance loss. In this paper, we present a new deep feature learning method for RUL estimation approach through time frequency representation (TFR) and multiscale convolutional neural network (MSCNN). TFR can reveal nonstationary property of a bearing degradation signal effectively. After acquiring time-series degradation signals, we get TFRs, which contain plenty of useful information using wavelet transform. Owing to high dimensionality, the size of these TFRs is reduced by bilinear interpolation, which are further regarded as inputs for deep learning models. Here, we introduce an MSCNN model structure, which keeps the global and local information synchronously compared to a traditional convolutional neural network (CNN). The salient features, which contribute for RUL estimation, can be learned automatically by MSCNN. The effectiveness of the presented method is validated by the experiment data. Compared to traditional data-driven and different CNN-based feature extraction methods, the proposed method shows enhanced performance in the prediction accuracy.
Source Title: IEEE Transactions on Industrial Electronics
URI: https://scholarbank.nus.edu.sg/handle/10635/167946
ISSN: 02780046
DOI: 10.1109/TIE.2018.2844856
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