Designing Airgap-Stable Magnetic Linear Position Systems

Florian Slanovc; Dieter Suess; Michael Ortner

doi:10.1109/TMAG.2022.3188474

Designing Airgap-Stable Magnetic Linear Position Systems

Florian Slanovc (Corresponding author)
, Dieter Suess
, Michael Ortner

Physics of Functional Materials

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

This work addresses the topic of magnetic linear position detection, a common method used in modern industries to determine linear displacement by magnetic means. One major shortcoming of this method is the inherent airgap instability, which puts strong constraints on mechanical construction tolerances and limits resolution and sensitivity. We propose a method to improve the airgap stability by adding a second magnet, which makes the field and by extension the system output (locally) independent of the distance from the source. It is shown that the measurement error for 1D systems can be reduced by a factor of ~14 and for 2D systems by a factor of ~5 by application of this method for a realistic example.

Original language	English
Article number	8002905
Number of pages	5
Journal	IEEE Transactions on Magnetics
Volume	58
Issue number	9
DOIs	https://doi.org/10.1109/TMAG.2022.3188474
Publication status	Published - Sept 2022

Funding

This work was supported in part by the COMET K1 Centre ASSIC Austrian Smart Systems Integration 100 Research Center and in part by the Vienna Doctoral School in Physics (VDSP). The COMET-Competence Centers for Excellent Technologies-Program is supported by BMVIT, 101 BMDW, and the federal provinces of Carinthia and Styria. The authors would like to thank Laura Ortner for review.

Austrian Fields of Science 2012

103017 Magnetism

Keywords

Airgap stability
field shaping
linear position
magnetic position detection
magnetic sensing
SENSORS
FIELD
Costs
Magnetization
Licenses
Sensor systems
Automotive engineering
Sensitivity
airgap stability
Cost function

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10.1109/TMAG.2022.3188474Licence: CC BY 4.0

Cite this

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title = "Designing Airgap-Stable Magnetic Linear Position Systems",

abstract = "This work addresses the topic of magnetic linear position detection, a common method used in modern industries to determine linear displacement by magnetic means. One major shortcoming of this method is the inherent airgap instability, which puts strong constraints on mechanical construction tolerances and limits resolution and sensitivity. We propose a method to improve the airgap stability by adding a second magnet, which makes the field and by extension the system output (locally) independent of the distance from the source. It is shown that the measurement error for 1D systems can be reduced by a factor of \textasciitilde{}14 and for 2D systems by a factor of \textasciitilde{}5 by application of this method for a realistic example.",

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AB - This work addresses the topic of magnetic linear position detection, a common method used in modern industries to determine linear displacement by magnetic means. One major shortcoming of this method is the inherent airgap instability, which puts strong constraints on mechanical construction tolerances and limits resolution and sensitivity. We propose a method to improve the airgap stability by adding a second magnet, which makes the field and by extension the system output (locally) independent of the distance from the source. It is shown that the measurement error for 1D systems can be reduced by a factor of ~14 and for 2D systems by a factor of ~5 by application of this method for a realistic example.

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KW - magnetic sensing

KW - SENSORS

KW - FIELD

KW - Costs

KW - Magnetization

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KW - Sensitivity

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KW - Cost function

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DO - 10.1109/TMAG.2022.3188474

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JF - IEEE Transactions on Magnetics

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Designing Airgap-Stable Magnetic Linear Position Systems

Abstract

Funding

Austrian Fields of Science 2012

Keywords

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