Print Email Facebook Twitter Parameter Estimation for the Jiles-Atherton Model in Weak Fields Title Parameter Estimation for the Jiles-Atherton Model in Weak Fields Author Vijn, A.R.P.J. Baas, O. Lepelaars, E.S.A.M. Publication year 2020 Abstract The purpose of this article is to estimate the parameters of the Jiles-Atherton hysteresis model, based on minor-loop measurement data in weak applied fields. The well-known hysteresis model by Jiles and Atherton serves as a basis of this article with an extension for the closure of minor loops. In order to represent minor loops correctly, a dissipative factor is introduced. A methodology to obtain the initial magnetization of a specimen is defined, based on an expansion in terms of higher order Gaussian functions. The methodology is implemented within a finite-element method using an interconnection between MATLAB and COMSOL. This interconnection allows the investigation of potentially large ferromagnetic objects to be calibrated to the proposed ferromagnetic model in weak fields. The proposed methodology was verified using an original approach. The approach relies on the use of a sensor array that makes it possible to detect local variations of magnetic properties in steel plates. Material parameters for our test specimen are successfully obtained by means of experimental data, using the shuffled frog leaping optimization algorithm. An analysis of the obtained results shows that the calibrated model is able to represent the measurement data accurately. © 1965-2012 IEEE. Subject Defence ResearchDefence, Safety and SecurityDissipative factorExperimental validationFerromagnetismHysteresisInitial magnetizationInversionJiles-Atherton modelMinor-loop closureFerromagnetic materialsHysteresis loopsMagnetizationSteel sheetDissipative factorExperimental validationsMinor loopParameter estimation To reference this document use: http://resolver.tudelft.nl/uuid:717ae88f-2651-4e8b-9222-055c6fc35170 DOI https://doi.org/10.1109/tmag.2020.2971435 TNO identifier 875543 Publisher Institute of Electrical and Electronics Engineers Inc. ISSN 0018-9464 Source IEEE Transactions on Magnetics, 56 (4) Article number 8979404 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.