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.
作者
姜豪
瞿体明
张济龙
许振丰
徐玉峰
曾攀
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)
出处
《仪表技术与传感器》
CSCD
北大核心
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)。
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
three-axis
fundamental mode orthogonal fluxgate
electromagnetic design
finite element simulation
heat transfer experiment
