Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation

A method for flexible vibration sensor-based retrofitting of CNC machines is proposed. As different states leave different fingerprints in the power spectrum plane, the states of the machine can be distinguished based on the features extracted from the spectrum map. Due to some states, like tool rep...

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Main Authors: Alex Kummer, Tamás Ruppert, Tibor Medvegy, János Abonyi
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Results in Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2590123022004480
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author Alex Kummer
Tamás Ruppert
Tibor Medvegy
János Abonyi
author_facet Alex Kummer
Tamás Ruppert
Tibor Medvegy
János Abonyi
author_sort Alex Kummer
collection DOAJ
description A method for flexible vibration sensor-based retrofitting of CNC machines is proposed. As different states leave different fingerprints in the power spectrum plane, the states of the machine can be distinguished based on the features extracted from the spectrum map. Due to some states, like tool replacement, are less frequent than others, like production state, monitoring the machine states is considered an imbalanced classification problem. The key idea is to use Borderline-Synthetic Minority Oversampling Technique (Borderline-SMOTE) to augment the data set. The concept is validated in an industrial case study. Soft sensors based on four machine learning algorithms with and without SMOTE to predict the states of the machine were implemented. The results show that the SMOTE-based data augmentation improved the performance of the models by 50%.
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spelling doaj.art-b77a0164ce324bd7b76127440fb459662022-12-22T03:43:48ZengElsevierResults in Engineering2590-12302022-12-0116100778Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentationAlex Kummer0Tamás Ruppert1Tibor Medvegy2János Abonyi3ELKH-PE Complex Systems Monitoring Research Group, Department of Process Engineering, University of Pannonia, Egyetem u. 10, POB 158, Veszprém, H-8200, Hungary; Corresponding author.ELKH-PE Complex Systems Monitoring Research Group, Department of Process Engineering, University of Pannonia, Egyetem u. 10, POB 158, Veszprém, H-8200, HungaryMechatronics and Measurement Techniques Research Group, University of Pannonia, Egyetem u. 10, H-8200, Veszprém, HungaryELKH-PE Complex Systems Monitoring Research Group, Department of Process Engineering, University of Pannonia, Egyetem u. 10, POB 158, Veszprém, H-8200, HungaryA method for flexible vibration sensor-based retrofitting of CNC machines is proposed. As different states leave different fingerprints in the power spectrum plane, the states of the machine can be distinguished based on the features extracted from the spectrum map. Due to some states, like tool replacement, are less frequent than others, like production state, monitoring the machine states is considered an imbalanced classification problem. The key idea is to use Borderline-Synthetic Minority Oversampling Technique (Borderline-SMOTE) to augment the data set. The concept is validated in an industrial case study. Soft sensors based on four machine learning algorithms with and without SMOTE to predict the states of the machine were implemented. The results show that the SMOTE-based data augmentation improved the performance of the models by 50%.http://www.sciencedirect.com/science/article/pii/S2590123022004480Soft-sensorRetrofittingPower spectrumIndustry 4.0
spellingShingle Alex Kummer
Tamás Ruppert
Tibor Medvegy
János Abonyi
Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation
Results in Engineering
Soft-sensor
Retrofitting
Power spectrum
Industry 4.0
title Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation
title_full Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation
title_fullStr Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation
title_full_unstemmed Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation
title_short Machine learning-based software sensors for machine state monitoring - The role of SMOTE-based data augmentation
title_sort machine learning based software sensors for machine state monitoring the role of smote based data augmentation
topic Soft-sensor
Retrofitting
Power spectrum
Industry 4.0
url http://www.sciencedirect.com/science/article/pii/S2590123022004480
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