Print Email Facebook Twitter Prediction of the Magnetic State of Ferromagnetic Objects by Assimilating Data into a Physical Model Title Prediction of the Magnetic State of Ferromagnetic Objects by Assimilating Data into a Physical Model Author Vijn, A. Peet, B.J. Schaaphok, M. Lepelaars, E. Heemink, A. Publication year 2022 Abstract This paper presents a hybrid model to estimate the magnetic behaviour of a ferromagnetic structure. The mathematical-physical model has been developed using the Method of Moments combined with a hysteresis model. The mathematical model was derived by a linearisation of the hysteresis curve. The initial magnetic state of a ferromagnetic object is found through inverse computations, including regularisation techniques. The idea of dictionary regularisation is introduced to support the inverse computations with prescribed templates that reflect a priori knowledge of the typical shapes of magnetisation distributions. These templates are extracted from the Method of Moments. Data assimilation is used to update the model in time by means of measurements of the magnetic field near a ferromagnetic structure. The proposed hybrid model is implemented for a typical steel object and verified by means of numerical experiments and measurements in an experimental environment. IEEE Subject data-assimilationdictionary learninghybrid modelhysteresisinitial magnetic stateInverse problemsMagnetic hysteresisMagnetic separationMagnetizationMagnetostaticsMathematical modelsMethod of MomentsNumerical modelsregularisationFerromagnetic materialsFerromagnetismHysteresisMagnetic separationMagnetizationMagnetostaticsMethod of momentsNumerical methodsFerromagnetic objectHysteresis modelsMagnetic stateRayleighRayleigh hysteresis model To reference this document use: http://resolver.tudelft.nl/uuid:b23e297f-57b2-4e89-b6b0-173b25262c6a TNO identifier 967582 Publisher Institute of Electrical and Electronics Engineers Inc. ISSN 0018-9464 Source IEEE Transactions on Magnetics Document type article Files To receive the publication files, please send an e-mail request to TNO Library.