最简多磁偶极子等效建模方法

doi:10.12305/j.issn.1001-506X.2021.08.06

摘要/Abstract

摘要：

针对磁体模拟法等效磁偶极子个数过多、磁矩方向不明确造成等效方程求解困难的问题, 研究了利用多磁偶极子模型等效模拟磁异常目标空间磁场分布时, 在不同空间尺度条件下的多磁偶极子磁矩、空间分布对等效效果的影响即多磁偶极子等效规律。建立了不同空间尺度条件下的多磁偶极子最简等效模型。通过COMSOL Multiphysics仿真软件完成潜艇空间磁场分布的仿真求解, 并将最简等效模型在测平面上的磁场分布与仿真结果对比, 验证了最简等效模型的有效性。

关键词: 磁偶极子, 磁体模拟, 最简等效模型, 多尺度

Abstract:

In view of problems that the magnet simulation method has too many equivalent magnetic dipoles and the direction of the magnetic moment is not clear, the equivalent equation is difficult to solve. To solve such problems, the influence of the magnetic moment and spatial distribution of multiple magnetic dipoles on the equivalent effect with different spatial scales, that is the equivalence law of multiple magnetic dipole equivalence, has been studied by using multiple magnetic dipole to model the magnetic field distribution of the magnetic anomaly. The simplest equivalent model of multiple magnetic dipoles with different spatial scales is established. The simulation solution of the submarine's spatial magnetic field distribution is completed by using COMSOL Multiphysics simulation software, furthermore, the magnetic field distribution of the simplest equivalent model on the survey plane is compared with the simulation results, which verifies the validity of the simplest equivalent model.

Key words: magnetic dipole, magnet simulation, simplest equivalent model, multi-scale

中图分类号:

O411.3

金煌煌, 庄志洪, 付梦印, 郭健, 王宏波. 最简多磁偶极子等效建模方法[J]. 系统工程与电子技术, 2021, 43(8): 2066-2075.

Huanghuang JIN, Zhihong ZHUANG, Mengyin FU, Jian GUO, Hongbo WANG. Modeling method using simplest multiple magnetic dipoles equivalence[J]. Systems Engineering and Electronics, 2021, 43(8): 2066-2075.

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磁偶极子数	空间尺度
磁偶极子数	0.5	1	3	4
2个磁偶极子	72.45	92.61	99.15	99.52
3个磁偶极子	78.07	95.11	99.43	99.68

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