亥姆霍兹线圈场均匀性的仿真研究  

Study on the Uniform Magnetic Field in Helmholtz Coils by Simulation

作　　者：宋起柱[1] 王文俭[1] 张骏驰[1] 

机构地区：[1]国家无线电监测中心

出　　处：《安全与电磁兼容》2010年第2期61-64,共4页Safety & EMC

摘　　要：通过对亥姆霍兹线圈内部的均匀场进行仿真计算,直观地看到了线圈内部场的变化趋势,将结果与解析法结果对比,误差在1%左右,亥姆霍兹线圈在其轴线附近产生的磁场均匀度较好。并以r为200mm、250mm、300mm为例,仿真计算出均匀区的大小,结果表明,线圈馈入点的位置会影响均匀场对称中心的位置。By simulating the field in Helmholtz coil, the variation trend of the magnetic field is obtained. Comparing the simulation results with the data gotten from analytic method, the error about 1% can be achieved. It also indicates that the uniformity of magnetic field near the axial line is better than other area. Taking the different conditions of coil radiuses, r=200 mm,250 mm,300 mm for examples, the uniform-field dimensions for those conditions are calculated, which proves that the central location in uniform field could be changed because of different feeding points.

关 键 词：亥姆霍兹线圈 场均匀性 馈电 

分 类 号：O441[理学—电磁学]