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A System Identification Technique Using Bias Current Perturbation for the Determination of the Magnetic Axes of an Active Magnetic Bearing

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dc.contributor Mechanical Engineering
dc.creator Spangler, Dewey
dc.creator Prins, Robert
dc.creator Kasarda, Mary
dc.date 2017-09-20T18:30:06Z
dc.date 2017-09-20T18:30:06Z
dc.date 2017-03-28
dc.date 2017-09-20T18:30:06Z
dc.date.accessioned 2023-03-01T18:53:10Z
dc.date.available 2023-03-01T18:53:10Z
dc.identifier Spangler, D.; Prins, R.; Kasarda, M. A System Identification Technique Using Bias Current Perturbation for the Determination of the Magnetic Axes of an Active Magnetic Bearing. Actuators 2017, 6, 13.
dc.identifier http://hdl.handle.net/10919/79313
dc.identifier https://doi.org/10.3390/act6020013
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/281695
dc.description Inherent in every Active Magnetic Bearing (AMB) are differences between the expected geometric axes and the actual magnetic axes due to a combination of discrepancies, including physical variation from manufacturing tolerances and misalignment from mechanical assembly, fringing and leakage effects, as well as variations in magnetic material properties within a single AMB. A method is presented here for locating the magnetic axes of an AMB that will facilitate the accurate characterization of the bearing air gaps for potential improvement in field tuning, performance analyses and certain shaft force measurement techniques. This paper presents an extension of the application of the bias current perturbation method for the determination of the magnetic center to the determination of magnetic axes for the further development of accurate current-based force measurement techniques.
dc.description Published version
dc.format application/pdf
dc.format application/pdf
dc.language en
dc.publisher MDPI
dc.rights Creative Commons Attribution 4.0 International
dc.rights http://creativecommons.org/licenses/by/4.0/
dc.subject magnetic bearing reaction
dc.subject output current set point
dc.subject error vector
dc.subject empirical transformation equation
dc.subject system identification
dc.title A System Identification Technique Using Bias Current Perturbation for the Determination of the Magnetic Axes of an Active Magnetic Bearing
dc.title Actuators
dc.type Article - Refereed
dc.type Text


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