三轴基模正交磁通门传感器探头结构设计与传热仿真  

Structure Design and Heat Transfer Simulation of Three-axis Fundamental Mode Orthogonal Fluxgate Sensor Probe

作　　者：姜豪 瞿体明[1] 张济龙 许振丰[2] 徐玉峰[2] 曾攀[1] JIANG Hao;QU Ti-ming;ZHANG Ji-long;XU Zhen-feng;XU Yu-feng;ZENG Pan(State Key Laboratory of Tribology,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China;Beijing Huahang Radio Measurement Institute,Beijing 100013,China)

机构地区：[1]摩擦学国家重点实验室,清华大学机械工程系,北京100084 [2]北京华航无线电测量研究所,北京100013

出　　处：《仪表技术与传感器》2020年第8期22-26,共5页Instrument Technique and Sensor

基　　金：国家重点研发计划(2017YFF0105700)。

摘　　要：文中对三轴正交基模磁通门进行了电磁设计,使得开环输出灵敏度不低于3 V/Gs。为保证探头在电流激励下温升可控,使用Co基非晶丝作为磁芯材料制作了小型三轴基模正交磁通门探头,在峰峰值80 mA交流激励下,探头表面温升实测曲线与有限元计算结果较符合,其由于磁芯焦耳热导致的整体温升控制在2 K以内,通流热稳定时间在30 min左右。通过优化,三轴探头可实现√Hz@1左右的噪声水平。In this paper,the electromagnetic design of the fundamental mode orthogonal fluxgate sensor was proposed and the open-loop output sensitivity could reach 3 V/Gs.In order to ensure that the temperature rise of the probe can be controlled,a small three-axis fluxgate sensor was made to be tested by using a Co-based amorphous wire as the core wire.Under an 80 mA peak-to-peak AC excitation,the measured temperature curve on the sensor surface was in good agreement with the finite element calculation results.The overall temperature rise caused by the Joule heat of the magnetic core was controlled within 2 K,and the heat flow stabilization time was about 30 minutes.After optimization,the three-axis probe can achieve a noise level around √Hz@1.

关 键 词：三轴 正交基模磁通门 电磁设计 有限元模拟 传热实验 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]