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Predicting the Electrical Impedance of Rolling Bearings Using Machine Learning Methods

Kirchner, Eckhard ; Bienefeld, Christoph ; Schirra, Tobias ; Moltschanov, Alexander (2022)
Predicting the Electrical Impedance of Rolling Bearings Using Machine Learning Methods.
In: Machines, 2022, 10 (2)
doi: 10.26083/tuprints-00021023
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Predicting the Electrical Impedance of Rolling Bearings Using Machine Learning Methods
Language: English
Date: 11 April 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Machines
Volume of the journal: 10
Issue Number: 2
Collation: 15 Seiten
DOI: 10.26083/tuprints-00021023
Corresponding Links:
Origin: Secondary publication DeepGreen

The present paper describes a measurement setup and a related prediction of the electrical impedance of rolling bearings using machine learning algorithms. The impedance of the rolling bearing is expected to be key in determining the state of health of the bearing, which is an essential component in almost all machines. In previous publications, the determination of the impedance of rolling bearings has already been advanced using analytical methods. Despite the improvements in accuracy achieved within the calculations, there are still discrepancies between the calculated and the measured impedance, leading to an approximately constant off-set value. This discrepancy motivates the machine learning approach introduced in this paper. It is shown that with the help of the data-driven methods the difference between analytical prediction and measurement is reduced to the order of up to 2% across the operational range analyzed so far. To introduce the context of the research shown, first the underlying physics of bearing impedance is presented. Subsequently different machine learning approaches are highlighted and compared with each other in terms of their prediction quality in the results part of this paper. As a further aspect, in addition to the prediction of the bearing impedance, it is investigated whether the rotational speed present at the bearing can be predicted from the frequency spectrum of the impedance using order analysis methods which is independent from the force prediction accuracy. The background to this is that, if the prediction quality is sufficiently high, the additional use of speed sensors could be omitted in future investigations.

Uncontrolled Keywords: rolling bearings, impedance, force sensor, machine learning
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-210230
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Institute for Product Development and Machine Elements (pmd)
Date Deposited: 11 Apr 2022 11:22
Last Modified: 14 Nov 2023 19:04
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21023
PPN: 500770611
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