Identification of an arbitrary-surface harmonic magnetic model from close measurements - Archive ouverte HAL
Communication Dans Un Congrès Année : 2024

Identification of an arbitrary-surface harmonic magnetic model from close measurements

Résumé

Decreasing spherical harmonic functions are widely used to identify and extrapolate the magnetic field produced by various devices. These functions are equivalent to a multipolar decomposition which orders the field according to its spatial decreasing rate. However this representation is not valid inside the Brillouin sphere, the smallest sphere enclosing the device. We introduce here the use of an alternative representation to replace the spherical harmonic functions when the measurement are inside the Brillouin sphere. This representation uses a basis of equivalents charges on a surface to reproduce the multipolar decomposition while being valid inside the Brillouin sphere. We demonstrate here the ability of this model to identify and extrapolate the field from very close measurements.
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Dates et versions

hal-04677318 , version 1 (26-08-2024)

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Gauthier Derenty-Camenen, Olivier Chadebec, Olivier Pinaud, L-L. Rouve, Steeve Zozor. Identification of an arbitrary-surface harmonic magnetic model from close measurements. CEFC 2024 - 21st Biennial Conference on Electromagnetic Field Computation, Jun 2024, Jeju, South Korea. ⟨10.1109/CEFC61729.2024.10585698⟩. ⟨hal-04677318⟩
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