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Article

Sensor and Component Fault Detection and Diagnosis for Hydraulic Machinery Integrating LSTM Autoencoder Detector and Diagnostic Classifiers

Department of Electrical Engineering and Computer Science, Knowledge-Based Systems and Knowledge Management, University of Siegen, 57076 Siegen, Germany
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Author to whom correspondence should be addressed.
Sensors 2021, 21(2), 433; https://doi.org/10.3390/s21020433
Received: 30 November 2020 / Revised: 5 January 2021 / Accepted: 6 January 2021 / Published: 9 January 2021
Anomaly occurrences in hydraulic machinery might lead to massive system shut down, jeopardizing the safety of the machinery and its surrounding human operator(s) and environment, and the severe economic implications following the faults and their associated damage. Hydraulics are mostly placed in ruthless environments, where they are consistently vulnerable to many faults. Hence, not only are the machines and their components prone to anomalies, but also the sensors attached to them, which monitor and report their health and behavioral changes. In this work, a comprehensive applicational analysis of anomalies in hydraulic systems extracted from a hydraulic test rig was thoroughly achieved. First, we provided a combination of a new architecture of LSTM autoencoders and supervised machine and deep learning methodologies, to perform two separate stages of fault detection and diagnosis. The two phases were condensed by—the detection phase using the LSTM autoencoder. Followed by the fault diagnosis phase represented by the classification schema. The previously mentioned framework was applied to both component and sensor faults in hydraulic systems, deployed in the form of two in-depth applicational experiments. Moreover, a thorough literature review of related work from the past decade, for autoencoders related fault detection and diagnosis in hydraulic systems, was successfully conducted in this study. View Full-Text
Keywords: deep learning; LSTM autoencoder; supervised learning; hydraulic test rig; sensor faults; component faults deep learning; LSTM autoencoder; supervised learning; hydraulic test rig; sensor faults; component faults
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MDPI and ACS Style

Mallak, A.; Fathi, M. Sensor and Component Fault Detection and Diagnosis for Hydraulic Machinery Integrating LSTM Autoencoder Detector and Diagnostic Classifiers. Sensors 2021, 21, 433. https://doi.org/10.3390/s21020433

AMA Style

Mallak A, Fathi M. Sensor and Component Fault Detection and Diagnosis for Hydraulic Machinery Integrating LSTM Autoencoder Detector and Diagnostic Classifiers. Sensors. 2021; 21(2):433. https://doi.org/10.3390/s21020433

Chicago/Turabian Style

Mallak, Ahlam, and Madjid Fathi. 2021. "Sensor and Component Fault Detection and Diagnosis for Hydraulic Machinery Integrating LSTM Autoencoder Detector and Diagnostic Classifiers" Sensors 21, no. 2: 433. https://doi.org/10.3390/s21020433

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