平行共轴线圈的磁场特征研究与实验设计

CHARACTERISTIC STUDY AND EXPERIMENT DESIGN OF MAGNETIC FIELD OF PARALLEL COAXIAL COILS

通过计算机及相关的传感器和数据采集接口辅助,研究了平行共轴双线圈间距分别为0.5R,R,1.5R时,轴线方向磁场强度的分布规律及特征.从平行共轴双线圈间距为R的亥姆霍兹线圈所形成的均匀磁场出发,结合理论推导,自己设计并组装了三线圈实验装置,实现了平行共轴三线圈均匀磁场区域扩大、强度增强的实验设计,在一定程度上弥补了传统亥姆霍兹线圈磁场测量的不足并有助于对其深入的理解和研究.

Under the assistant of the computer, as while as the relative sensors and date acqui- sition interface, distributions and characteristics of the magnetic intensity along the axis direc- tion were studied, where the distance between the two coils was R, 0.5R and 1.5R, respec- tively. Based on the uniform magnetic field formed by the parallel coaxial Helmholtz coils with the distance R, combined with theoretical derivation, we designed and assembled a new type ＂three coils＂ experimental equipment. Results implied that the uniform magnetic field was wi- der, while the uniform magnetic intensity was stronger, which made up for lack of the meas- urement of the traditional ＂Helmholtz coil＂ to a certain extent. At last, the three dimensional space magnetic character was deeply studied and understood with theory and experiments.