Displacement measurement for ferromagnetic materials based on the double

被引：4

作者：

Wang, Shenghan ^{[1
]}

Feng, Bo ^{[1
]}

Hu, Yu ^{[1
]}

Qiu, Gongzhe ^{[1
]}

Duan, Zhaoqi ^{[1
]}

Kang, Yihua ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2023年 / 362卷

关键词：

Parallel cables; Magnetic displacement sensor; Ferromagnetic material; Sensitivity enhancement; EDDY-CURRENT; SENSOR; OPTIMIZATION;

D O I：

10.1016/j.sna.2023.114599

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper introduces a magnetic displacement sensor comprising of a double-layer parallel cables (PCs) magnetizer, tunnel magnetoresistance (TMR) sensors and magnetic flux concentrating plates (MFCPs). By uti-lizing a double-layer PCs magnetizer, the background magnetic field in the TMR sensor's location can be eliminated, while enhancing the magnetization field of the workpiece. This ensures that the highly sensitive TMR sensors operates within its measurement range. Additionally, the MFCPs concentrate the magnetic field at the TMR sensor location to further improve the displacement measurement sensitivity. After optimizing the geom-etry and excitation frequency of the probe with FEM, the probe can achieve displacement measurements with 0.1 mm accuracy in the range of 0.5-6.0 mm for ferromagnetic workpieces with linearity of 4.5 % and average relative error under 2.0 %.

引用

页数：10

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