Feature learning for fault detection in high-dimensional condition monitoring signals

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Proceedings of the Institution of Mechanical En...(2018)

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TL;DR

An integrated automatic unsupervised feature learning and one-class classification for fault detection that uses data on healthy conditions only for its training, demonstrating a better performance in cases where condition monitoring data contain several non-informative signals.

Abstract

Complex industrial systems are continuously monitored by a large number of heterogeneous sensors. The diversity of their operating conditions and the possible fault types make it impossible to collect enough data for learning all the possible fault patterns. This article proposes an integrated automatic unsupervised feature learning and one-class classification for fault detection that uses data on healthy conditions only for its training. The approach is based on stacked extreme learning machines (namely hierarchical extreme learning machines) and comprises an autoencoder, performing unsupervised feature learning, stacked with a one-class classifier monitoring the distance of the test data to the training healthy class, thereby assessing the health of the system. This study provides a comprehensive evaluation of hierarchical extreme learning machines fault detection capability compared to other machine learning approaches, such as stand-alone one-class classifiers (extreme learning machines and support vector machines); these same one-class classifiers combined with traditional dimensionality reduction methods (principal component analysis) and a deep belief network. The performance is first evaluated on a synthetic dataset that encompasses typical characteristics of condition monitoring data. Subsequently, the approach is evaluated on a real case study of a power plant fault. The proposed algorithm for fault detection, combining feature learning with the one-class classifier, demonstrates a better performance, particularly in cases where condition monitoring data contain several non-informative signals.

Authors

Feature learning for fault detection in high-dimensional condition monitoring signals

Published in

Proceedings of the Institution of Mechanical En...(2018)

External Links:

Generate Graph DownloadPDF

TL;DR

Abstract

Authors

References33 items

Fleet PHM for Critical Systems: Bi-level Deep Learning Approach for Fault Detection

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TL;DR

Abstract

Authors

TL;DR

Abstract

Authors

References33 items

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