Solenoid magnetic field modeling based on dual magnetic dipoles

被引：0

作者：

Xie Y. ^{[1
]}

Li Q. ^{[2
]}

Xie W. ^{[2
]}

Li X. ^{[2
]}

机构：

[1] Flight Automatic Control Research Institute, Aviation Industry Corporation of China, Xi'an

[2] Space Control and Inertial Technology Research Center, Harbin Institute of Technology, Harbin

来源：

Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology | 2019年 / 27卷 / 05期

关键词：

Magnetic dipole; Magnetic field distribution model; Magnetic field positioning; Near-field; Simulated annealing algorithm;

D O I：

10.13695/j.cnki.12-1222/o3.2019.05.010

中图分类号：

学科分类号：

摘要：

A modeling method of magnetic field distribution of the solenoid based on the dual magnetic dipoles is proposed for low frequency alternating magnetic field positioning, which can reduce the near-field error of single magnetic dipole model and improve positioning accuracy. Firstly, by analyzing the magnetic field distribution law of the magnetic dipole in space, the solenoid is equivalent to the superposition of two symmetrical magnetic dipole arrays, and the magnetic dipole array model of the solenoid is established. Then the objective function of model error is introduced and the optimal model parameters are calculated by simulated annealing algorithm. Finally, according to the model of magnetic field distribution, the magnetic dipole array is simplified as magnetic dipole, which not only ensures the positioning accuracy, but also simplifies the model and facilitates the positioning calculation. Experimental results show that, under the condition of near-field, the maximum error of dual magnetic dipoles model is only 0.003m, which is 90.26% lower than that of the traditional single-magnetic dipole model. The maximum error is approximate between the traditional single-magnetic dipole model and dual magnetic dipoles model under the condition of far-field. © 2019, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.

引用

页码：625 / 630

页数：5

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