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Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column

This paper presents the design, development and evaluation of a unique non-contact instrumentation system that can accurately measure the interface displacement between two rigid components in six degrees of freedom. The system was developed to allow measurement of the relative displacements between...

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Autores principales: Oddbjornsson, Olafur, Kloukinas, Panos, Gokce, Tansu, Bourne, Kate, Horseman, Tony, Dihoru, Luiza, Dietz, Matt, White, Rory E., Crewe, Adam J., Taylor, Colin A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198809/
https://www.ncbi.nlm.nih.gov/pubmed/34072278
http://dx.doi.org/10.3390/s21113740
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author Oddbjornsson, Olafur
Kloukinas, Panos
Gokce, Tansu
Bourne, Kate
Horseman, Tony
Dihoru, Luiza
Dietz, Matt
White, Rory E.
Crewe, Adam J.
Taylor, Colin A.
author_facet Oddbjornsson, Olafur
Kloukinas, Panos
Gokce, Tansu
Bourne, Kate
Horseman, Tony
Dihoru, Luiza
Dietz, Matt
White, Rory E.
Crewe, Adam J.
Taylor, Colin A.
author_sort Oddbjornsson, Olafur
collection PubMed
description This paper presents the design, development and evaluation of a unique non-contact instrumentation system that can accurately measure the interface displacement between two rigid components in six degrees of freedom. The system was developed to allow measurement of the relative displacements between interfaces within a stacked column of brick-like components, with an accuracy of 0.05 mm and 0.1 degrees. The columns comprised up to 14 components, with each component being a scale model of a graphite brick within an Advanced Gas-cooled Reactor core. A set of 585 of these columns makes up the Multi Layer Array, which was designed to investigate the response of the reactor core to seismic inputs, with excitation levels up to 1 g from 0 to 100 Hz. The nature of the application required a compact and robust design capable of accurately recording fully coupled motion in all six degrees of freedom during dynamic testing. The novel design implemented 12 Hall effect sensors with a calibration procedure based on system identification techniques. The measurement uncertainty was ±0.050 mm for displacement and ±0.052 degrees for rotation, and the system can tolerate loss of data from two sensors with the uncertainly increasing to only 0.061 mm in translation and 0.088 degrees in rotation. The system has been deployed in a research programme that has enabled EDF to present seismic safety cases to the Office for Nuclear Regulation, resulting in life extension approvals for several reactors. The measurement system developed could be readily applied to other situations where the imposed level of stress at the interface causes negligible material strain, and accurate non-contact six-degree-of-freedom interface measurement is required.
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spelling pubmed-81988092021-06-14 Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column Oddbjornsson, Olafur Kloukinas, Panos Gokce, Tansu Bourne, Kate Horseman, Tony Dihoru, Luiza Dietz, Matt White, Rory E. Crewe, Adam J. Taylor, Colin A. Sensors (Basel) Article This paper presents the design, development and evaluation of a unique non-contact instrumentation system that can accurately measure the interface displacement between two rigid components in six degrees of freedom. The system was developed to allow measurement of the relative displacements between interfaces within a stacked column of brick-like components, with an accuracy of 0.05 mm and 0.1 degrees. The columns comprised up to 14 components, with each component being a scale model of a graphite brick within an Advanced Gas-cooled Reactor core. A set of 585 of these columns makes up the Multi Layer Array, which was designed to investigate the response of the reactor core to seismic inputs, with excitation levels up to 1 g from 0 to 100 Hz. The nature of the application required a compact and robust design capable of accurately recording fully coupled motion in all six degrees of freedom during dynamic testing. The novel design implemented 12 Hall effect sensors with a calibration procedure based on system identification techniques. The measurement uncertainty was ±0.050 mm for displacement and ±0.052 degrees for rotation, and the system can tolerate loss of data from two sensors with the uncertainly increasing to only 0.061 mm in translation and 0.088 degrees in rotation. The system has been deployed in a research programme that has enabled EDF to present seismic safety cases to the Office for Nuclear Regulation, resulting in life extension approvals for several reactors. The measurement system developed could be readily applied to other situations where the imposed level of stress at the interface causes negligible material strain, and accurate non-contact six-degree-of-freedom interface measurement is required. MDPI 2021-05-27 /pmc/articles/PMC8198809/ /pubmed/34072278 http://dx.doi.org/10.3390/s21113740 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Oddbjornsson, Olafur
Kloukinas, Panos
Gokce, Tansu
Bourne, Kate
Horseman, Tony
Dihoru, Luiza
Dietz, Matt
White, Rory E.
Crewe, Adam J.
Taylor, Colin A.
Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column
title Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column
title_full Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column
title_fullStr Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column
title_full_unstemmed Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column
title_short Design and Calibration of a Hall Effect System for Measurement of Six-Degree-of-Freedom Motion within a Stacked Column
title_sort design and calibration of a hall effect system for measurement of six-degree-of-freedom motion within a stacked column
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198809/
https://www.ncbi.nlm.nih.gov/pubmed/34072278
http://dx.doi.org/10.3390/s21113740
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