亥姆霍兹线圈场均匀性的仿真研究

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，线圈馈人点的位置会影响均匀场对称中心的位置。

Study on the Uniform Magnetic Field in Helmholtz Coils by Simulation

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.