A coil for measuring the Fourier coefficients of the magnetic field and its application to dipole localization

被引:0
作者
Nara, Takaaki [1 ]
Ando, Shigeru [2 ]
机构
[1] Univ Electro Commun, Engn Mech, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan
[2] Univ Tokyo, Grad Sch Informat Sci & Technol, Tokyo 1138654, Japan
来源
2008 PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-7 | 2008年
关键词
inverse problems; dipole; localization; leakage magnetic flux;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper presents a novel algorithm and sensor for localization of a magnetic dipole. We show that the azimuth angle of the dipole can be uniquely and directly determined from the first order Fourier coefficients of the magnetic field on a circle with an arbitrary radius centered at the origin. Then, we develop two coils which directly measure the first order Fourier coefficients of the magnetic field. The proposed method is verified by a crack detection experiment using the leakage magnetic flux method.
引用
收藏
页码:1043 / +
页数:3
相关论文
共 3 条
[1]   Estimating the sizes of surface cracks based on Hall element measurements of the leakage magnetic field and a dipole model of a crack [J].
Minkov, D ;
Takeda, Y ;
Shoji, T ;
Lee, J .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (02) :169-176
[2]   Direct localization of multiple magnetic dipoles for surface crack detection [J].
Nara, T. ;
Ando, S. .
Journal of Inverse and Ill-Posed Problems, 2007, 15 (04) :403-418
[3]  
NARA T, 2005, T SICE, P16