Design and implementation of square Helmholtz coil for uniform magnetic field generation

作     者：Wang Chao Yuan Bin Mao Junfa Zhang Shuang 王超;袁斌;毛军发;张爽

作者机构：School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China College of Electronic Science and EngineeringJilin UniversityChangchun 130021China 

基　　金：The National Natural Science Foundation of China(No.61327803) 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2019年第35卷第1期

页      码：16-21页

摘      要：In order to calibrate electrical instruments and generate a constant magnetic field, a novel design method for square Helmholtz coil is proposed. According to the superposition principle in electromagnetics, the theory of the square Helmholtz coil is established, and the design method is verified by Matlab calculation. Compared with conventional circular Helmholtz coil, the novel square one is with a larger uniform region. Simulation work is conducted in Maxwell, and the distribution of the magnetic field is obtained. The results demonstrate the validation of the applied calculation method of the proposed Helmholtz model. The space utilization rate η is used to make a comparison between the square and circular coils for the uniform region. The square Helmholtz coil is fabricated, the length of a single square coil is 1.5 m, and the amplitude of the magnetic field is controlled by the current. The GSM-19 T proton magnetometer is used to measure the amplitude of the magnetic field generated by the square Helmholtz coil. Experimental results indicate that a wide-range variable uniform magnetic field from 0 to 120 μT is generated in the center of Helmholtz coils.

主 题 词：proton magnetometer square Helmholtz coils space utilization rate uniform magnetic field 

学科分类：080804[080804] 080805[080805] 0808[工学-自动化类] 08[工学] 

核心收录：

D　O　I：10.3969/j.issn.1003-7985.2019.01.003

馆 藏 号：203607259...