Experiment research of magnetic dipole model applicability for a magnetic object

被引：0

作者：

Zhang Z. ^{[1
]}

Xiao C. ^{[1
]}

Gao J. ^{[1
]}

Zhou G. ^{[1
]}

机构：

[1] Electric and Information Engineering College, Naval University of Engineering

来源：

Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2010年 / 18卷 / 05期

关键词：

Application condition; Equivalent magnetic moments; Magnetic dipole; Magnetic object;

D O I：

10.3969/j.issn.1005-0930.2010.05.016

中图分类号：

O441.2 [磁学]; TM12 [];

学科分类号：

摘要：

Magnetic dipole model is one simple but applied broadly magnetic model, and especially applied broadly in the magnetic detecting field. According to the case that the application of the model is only by rule of thumb and the application principle isn't known clearly, the thought of getting the magnetic dipole model application condition by experiment research was proposed. Based on the near field measurement, according to testing the astringency of equivalent magnetic moments and the relative error of magnetic field, a research method of getting magnetic dipole model application condition was found. Based on the theory analysis, 5 different magnetic object mockups were chosen for the experiment, and the results had indicated that beyond 2.5 times object length, the equivalent magnetic moments were convergent and the magnetic relative error was very small, which made clear that beyond 2.5 times object length, a magnetic object could be dealt with as a magnetic dipole and the demand of engineering could be satisfied. The result supplies basis for the magnetic dipole model's reasonable application.

引用

页码：862 / 868

页数：6