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Article

Deep Neural Network Feature Selection Approaches for Data-Driven Prognostic Model of Aircraft Engines

Industrial and Manufacturing Engineering, North Dakota State University, Fargo, ND 58102, USA
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Author to whom correspondence should be addressed.
Aerospace 2020, 7(9), 132; https://doi.org/10.3390/aerospace7090132
Received: 29 July 2020 / Revised: 28 August 2020 / Accepted: 3 September 2020 / Published: 4 September 2020
(This article belongs to the Special Issue Fault Detection and Prognostics in Aerospace Engineering)
Predicting Remaining Useful Life (RUL) of systems has played an important role in various fields of reliability engineering analysis, including in aircraft engines. RUL prediction is critically an important part of Prognostics and Health Management (PHM), which is the reliability science that is aimed at increasing the reliability of the system and, in turn, reducing the maintenance cost. The majority of the PHM models proposed during the past few years have shown a significant increase in the amount of data-driven deployments. While more complex data-driven models are often associated with higher accuracy, there is a corresponding need to reduce model complexity. One possible way to reduce the complexity of the model is to use the features (attributes or variables) selection and dimensionality reduction methods prior to the model training process. In this work, the effectiveness of multiple filter and wrapper feature selection methods (correlation analysis, relief forward/backward selection, and others), along with Principal Component Analysis (PCA) as a dimensionality reduction method, was investigated. A basis algorithm of deep learning, Feedforward Artificial Neural Network (FFNN), was used as a benchmark modeling algorithm. All those approaches can also be applied to the prognostics of an aircraft gas turbine engines. In this paper, the aircraft gas turbine engines data from NASA Ames prognostics data repository was used to test the effectiveness of the filter and wrapper feature selection methods not only for the vanilla FFNN model but also for Deep Neural Network (DNN) model. The findings show that applying feature selection methods helps to improve overall model accuracy and significantly reduced the complexity of the models. View Full-Text
Keywords: data-driven; machine learning; deep learning; DNN; feature selection; Prognostic and Health Management; aircraft gas turbine engines; C-MAPSS data-driven; machine learning; deep learning; DNN; feature selection; Prognostic and Health Management; aircraft gas turbine engines; C-MAPSS
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MDPI and ACS Style

Khumprom, P.; Grewell, D.; Yodo, N. Deep Neural Network Feature Selection Approaches for Data-Driven Prognostic Model of Aircraft Engines. Aerospace 2020, 7, 132. https://doi.org/10.3390/aerospace7090132

AMA Style

Khumprom P, Grewell D, Yodo N. Deep Neural Network Feature Selection Approaches for Data-Driven Prognostic Model of Aircraft Engines. Aerospace. 2020; 7(9):132. https://doi.org/10.3390/aerospace7090132

Chicago/Turabian Style

Khumprom, Phattara, David Grewell, and Nita Yodo. 2020. "Deep Neural Network Feature Selection Approaches for Data-Driven Prognostic Model of Aircraft Engines" Aerospace 7, no. 9: 132. https://doi.org/10.3390/aerospace7090132

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