梯度磁场标准装置组成及不确定度分析  

Composition and uncertainty analysis of gradient magnetic field standard device

作　　者：李享 翟晶晶 张海波 周昌剑 LI Xiang;ZHAI Jing-jing;ZHANG Hai-bo;ZHOU Chang-jian(No.710 R&D Institute,China State Shipbuilding Corporation,,Yichang 443003,China)

机构地区：[1]中国船舶集团有限公司第七一〇研究所,湖北宜昌443003

出　　处：《磁性材料及器件》2021年第5期87-90,共4页Journal of Magnetic Materials and Devices

摘　　要：介绍了梯度磁场标准装置的系统组成和工作原理,并对其测量不确定度进行分析。装置可单独产生梯度磁场,也可以在梯度磁场上叠加均匀磁场,两种磁场方向相同,以确保合成磁场仍具有优良的线性度,复现梯度磁场的范围1.5~120μT/m,测量不确定度为1.5×10^(–3)(k=2)。装置可用于校准矢量梯度磁强计,也可以用于校准原子式磁强计的梯度容差。This paper introduced the system composition and working principle of gradient magnetic field standard device,and its measurement uncertainty is analyzed.The device can independently generate a gradient magnetic field,it is also possible to superimpose an uniform magnetic field on the gradient magnetic field,the directions of the two magnetic fields are the same to ensure that the synthesized magnetic field still has excellent linearity,the range of reproducing gradient magnetic field is 1.5μT/m-120μT/m,the uncertainty of measurement is 1.5×10^(–3)(k=2).The device can be used to calibrate the vector gradient magnetometers as well as the gradient tolerance of atomic magnetometers.

关 键 词：梯度磁场 均匀磁场 线圈 测量不确定度 

分 类 号：TM937[电气工程—电力电子与电力传动]