亥姆霍兹线圈及麦克斯韦线圈磁场分布及均匀性比较  

Comparison of Magnetic Field Distribution and Homogeneity between Helmholtz coil and Maxwell coil

作　　者：宋新昌[1] SONG Xin-chang(1st Class Weak Magnetic Metering Station of NDM, No 710 R & D Institute,China Shipbuilding Industry Corporation , Yichang 443003, China)

机构地区：[1]中国船舶重工集团公司第七一〇研究所国防科技工业弱磁一级计量站,湖北宜昌443003

出　　处：《磁性材料及器件》2016年第5期16-18,77,共4页Journal of Magnetic Materials and Devices

摘　　要：基于毕奥-萨伐尔定律,运用椭圆积分,推导出圆环电流在空间任意一点产生的磁场公式,进而分析了亥姆霍兹线圈和麦克斯韦线圈在中心处磁场各分量的分布模型,绘出了空间分布。分析结果表明,麦克斯韦线圈磁场不均匀度小于0.0001的区域半径约是亥姆霍兹线圈的20倍。Based on the Biot-Savart law,using elliptic integral,the magnetic field formula of ring current coil inany space is deduced,each component of the magnetic field model are analyzed both in the center of the Helmholtz coiland Maxwell coil,and distribution diagrams is given.The analysis result shows that for area radius of homogeneity ofbigger than0.0001,the Maxwell coil is20times bigger than the Helmholtz coil.

关 键 词：亥姆霍兹线圈 麦克斯韦线圈 磁感应强度 磁场均匀性 

分 类 号：TM153[电气工程—电工理论与新技术]