方体四线圈均匀磁场源研究
首发时间:2012-12-26
摘要:一个可以产生已知强度的均匀磁场区的标准磁场源是测试、标定各类测磁仪器的基本条件。以正方体四线圈作为均匀磁场标准场源,从理论上推得其产生磁场的公式,通过Maxwell软件仿真结果与理论计算结果的比对验证了Maxwell软件用于反映线圈产生磁场的有效性,讨论了四线圈装置产生均匀磁场的情况。结果论证了其作为均匀磁场源的可行性,与亥姆霍兹线圈和平行共轴三线圈相比,无论在均匀度方面还是在均匀场区大小方面都有很大优势。
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Investigation on homogeneous magnetic field source of four square coils
Abstract:A standard source of homogeneous known strength magnetic field is essential to calibrating various magnetic measurement equipments. The magnetic formula of four square coils which are taken as the standard magnetic field source is deduced in theory. Comparing the simulation value with the theoretical calculating value, it has been demonstrate that the Maxwell software is valid to simulate the magnetic field strength. The magnetic field generated by four square coils is discussed in this article. It proves the feasibility of square coil as homogeneous magnetic field source. Comparing with Helmholtz coils and three parallel coaxial circular coils, it has significant advantages, whether on uniformity or field size.
Keywords: standard magnetic field source square coil Maxwell uniformity
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