Spherical Harmonic Identification Using a Priori Information About an Electrical Device

Author

Schmerber, Louis ; Rouve, Laure-Line ; Foggia, Albert

Author_Institution

Lab. d´´Electrotech. de Grenoble, CNRS, St. Martin d´´Heres

Volume

43

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1781

Lastpage

1784

Abstract

This paper deals with a method using the spherical harmonic expansion to identify a magnetic equivalent model to a given electrical device. The most significant issue of this identification is the number of required magnetic sensors to obtain a valid model. Therefore, our method is based on a probabilistic approach to solve inverse problems using prior information of the source like periodicities or symmetries. Thus, the required number of sensors has strongly decreased. The method is illustrated by a finite-element method simulated permanent magnet motor

Keywords

finite element analysis; harmonic analysis; inverse problems; magnetic devices; magnetic sensors; permanent magnet motors; probability; a priori information; electrical device; electrical devices; finite element method; inverse problems; magnetic equivalent model; magnetic sensors; permanent magnet motors; probabilistic approach; spherical harmonic identification; Finite element methods; Inverse problems; Magnetic devices; Magnetic properties; Magnetic sensors; Magnetic separation; Magnetic shielding; Magnetic variables measurement; Matrix decomposition; Permanent magnet motors; A priori information; Bayesian inverse problem; magnetic measurement; spherical harmonics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892521

Filename

4137804