|
|
|
| The Design and Research on Performance of Round-saddle Coils for Magnetic Shielding
|
| ZHAO Wei-xia, DONG Quan-lin,SUN Mao-duo,DING Ying,YANG Ya-jiao,DANG Yu-jie |
| Departmental of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China |
|
|
|
|
Abstract The magnetic field distribution expression of one pair of round-saddle coils at any point in space is theoretically inferred based on the Biot-Savart Law, and the structure of the coils is optimized. The fact that the round-saddle coils can produce uniform magnetic field of a certain region is proved, and the partial magnetic field distribution of round-saddle coils is given quantitatively. The designed coils can produce uniform magnetic field of a certain area which is 28% of the axis area which the uniformity can be 1%, 10% of the axis area which the uniformity can be 0.1%. The maximum value of the magnetic field compensation of coils of one single round can be 15 nT in the current of 1 mA,and the relative deviation is less than 0.14 nT. Therefore the correctness of the magnetic field distribution expression is verified, providing the theoretical basis and reference for the design and research of the dimensional magnetic field compensation system.
|
|
|
|
|
|
［1］赵永明,徐云飞,吴艳,等. 通过补偿法获得零磁场环境［J］. 浙江大学学报(理学版),2006,(01): 44-47.
［2］武海澄,刘正敏,周荷琴. 磁共振成像系统中低阶平板式匀场线圈的设计［J］. 中国电机工程学报,2005,(24): 154-159.
［3］董全林,刘雪萍,张春熹,等. 双圈共轴线圈产生错位对激励磁场的影响［J］. 计量学报,2013, 34(6): 573-578.
［4］陆小松,陈群峰,史保森,等. 基于冷原子系综制备非经典关联光子对［C］// 中国物理学会原子与分子物理专业委员会.第十五届全国原子与分子物理学术会议论文摘要集, 贵阳:2009.
［5］张伟. 高均匀度磁场线圈的设计［J］. 计量学报,2010, 31(5): 404-407.
［6］Jeon Seungmun, Jang Gunhee, Choi Hyunchul, et al. Magnetic Navigation System With Gradient and Uniform Saddle Coils for the Wireless Manipulation of Micro-Robots in Human Blood Vessels［J］. Magnetics, IEEE Transactions on, 2010, 46(6): 1943-1946.
［7］李国丽,李剑平,王群京,等. 外磁场驱动的无线内窥镜磁场线圈的设计方法研究［J］. 中国科学技术大学学报,2008,(03): 272-276.
［8］Wang X Z, Hao J C, Yu Y, et al. The Design of Coil Assembly Producing Uniform Magnetic Field Using in Plasma Propulsion System［C］// Vacuum Nanoelectronics Conference, 2006 and the 50th International Field Emission Symposium, IVNC/IFES. Technical Digest. 19th International,Guilin: 2006,379-380. |
|
|
|
2015, Vol. 36 
