注：湖北省教育厅指导性项目“基于光纤光栅传感的车身间隙面差检测与质量控制策略研究”（No. B2020226）
作者：孟丽君，于全全，潘天翔
单位：江汉大学智能制造学院，湖北武汉 430056
中图分类号：TH702               
文献标识码：A               
文章编号：1006-883X(2022)01-0014-05
收稿日期：2021-10-30

摘要：文章设计了一种磁吸式传感器永磁体，并且运用COMSOL软件仿真分析了磁吸式传感器永磁体的磁场分布情况。利用几何的对称性和磁场的反对称性，建立了四分之一钕铁硼圆柱永磁体磁场模型，得出了圆柱型永磁体磁通密度模的空间分布图、吸附钢板的磁力值，分析了永磁体磁场强度和吸附钢板厚度对磁力的影响关系，确定了磁吸式传感器永磁体的大小和数目。实验证明，永磁体提供的磁力满足吸附安装的设计要求。磁场的仿真分析避免了理论公式计算的繁杂，为磁吸式传感器永磁体的设计提供参考。
关键词：永磁体；磁吸式传感器；磁场强度；COMSOL软件

Simulation Design of Permanent Magnet for Magnetic Suction Sensor
MENG Lijun, YU Quanquan, PAN Tianxiang
(School of Intelligent Manufacturing, Jianghan University, Wuhan 430056, China)
Abstract: In the paper, a magnet magnet is designed, and the magnetic field distribution of magnet is analyzed by COMSOL software. Using geometric symmetry and the inverse symmetry of the magnetic field, a quarter of NdFeB cylindrical permanent magnet magnetic field model is established, it is concluded that the cylindrical permanent magnet magnetic flux density of space distribution, adsorption magnetic values of steel plate, permanent magnet magnetic field strength is analyzed and the influence of the steel plate thickness of magnetic adsorption, determines the size and number of permanent magnet magnetic suction sensor. Experiments show that the magnetic force provided by permanent magnet meets the design requirements of adsorption installation. The simulation analysis of magnetic field avoids the complicated calculation of theoretical formula and provides reference for the design of permanent magnet of magnetic suction sensor.
Key words: permanent magnet; magnetic suction sensor; magnetic field strength; COMSOL software

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备注：2022年 第28卷 第01期