3D optimal design of open type magnetic circuit producing uniform field

被引：0

作者：

Takahashi, N. ^{[1
]}

Nakazaki, S. ^{[1
]}

Kato, H. ^{[2
]}

Asaumi, J. ^{[3
]}

机构：

[1] Okayama Univ, Grad Sch Nat Sci & Technol, Dept Elect & Elect Engn, Okayama 7008530, Japan

[2] Okayama Univ, Grad Sch Hlth Sci, Dept Radiol Technol, Okayama 7008530, Japan

[3] Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Field Tumor Biol, Dept Oral & Maxillofacial Radiol, Okayama 7008530, Japan

来源：

COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING | 2009年 / 28卷 / 05期

关键词：

Optimum design; Magnetic devices; Circuits; PERMANENT-MAGNET; OPTIMIZATION; DEVICE;

D O I：

10.1108/03321640910969485

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Purpose - The purpose of this paper is to provide an approach to the optimal design of open type magnetic circuit of permanent magnet having uniform field. Design/methodology/approach - The Biot-Savart's law and evolution strategy are used for the design of permanent magnet configuration. The optimization is carried out by changing the objective function, dimension of target region, and target flux density. Findings - The obtained uniformity is affected by the selection of objective function, dimension of target region, and target flux density. About 50 ppm uniformity of 0.08 T in the imaging area is obtained by changing the dimensions, dimension of target region, and target flux of 3D magnets and the amplitudes of magnetization and the directions of magnetization vectors. Originality/value - This paper describes a new approach for obtaining the optimal shape of open type magnetic circuit which may be used when magnetic resonance imaging is carried out.

引用

页码：1236 / 1248

页数：13

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