现代电子技术2012，Vol.35Issue(7)：190-194,5.
方形亥姆霍兹线圈磁场系统均匀性分析
Analysis on magnetic field homogeneity of magnetic system based on square Helmholtz coils
刘坤 1张松勇 1顾伟1
作者信息
- 1. 上海海事大学航运技术与控制工程交通行业重点实验室,上海200135
- 折叠
摘要
Abstract
The square Helmholtz coil is applied to simulate zero magnetic field or magnetic field in any size and any direction in the measuring range scope, its homogeneity is mainly affected by the coil's structural dimensions. In order to obtain the relationship between uniform magnetic field area and coil dimension, the mathematical model of 3-D square Helmholtz coils was constructed, the vector formula of magnetic field distribution at any point in its internal was deduced and the corresponding expression between current and magnetic field intensity was obtained. It takes advantage of programming constant-current source and magnetometer to track compensation dynamically and simulate the static magnetic field, and it analyses the uniform magnetic field region, the results show that the theoretical and experimental results are in good agreement.关键词
亥姆霍兹线圈/磁场模拟/均匀度/磁场补偿Key words
Helmholtz coils/magnetic simulation/uniformity/magnetic compensation分类
信息技术与安全科学引用本文复制引用
刘坤,张松勇,顾伟..方形亥姆霍兹线圈磁场系统均匀性分析[J].现代电子技术,2012,35(7):190-194,5.
