CAJ | 학술논문

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、标定各类磁测仪器的基本条件。以正方体四线圈作为均匀磁场标准场源，理论推导了其磁场分布。通过Maxwell软件对正方体四线圈的磁场进行仿真分析，仿真结果与理论计算一致。分析了四线圈装置轴向和垂直轴向的磁场均匀性，结果表明方体四线圈装置可以在装置中心周围相当大的范围内产生高均匀度的磁场。对于边长为1m 的四线圈装置，在装置中心长宽0.2m、高0.4m的长方体内，磁场偏差率控制在0.25%以内。结果论证了其作为均匀磁场源的可行性，与亥姆霍兹线圈相比，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。
일개가이산생이지강도적균균자장구적표준자장원시측시、표정각류자측의기적기본조건。이정방체사선권작위균균자장표준장원，이론추도료기자장분포。통과Maxwell연건대정방체사선권적자장진행방진분석，방진결과여이론계산일치。분석료사선권장치축향화수직축향적자장균균성，결과표명방체사선권장치가이재장치중심주위상당대적범위내산생고균균도적자장。대우변장위1m 적사선권장치，재장치중심장관0.2m、고0.4m적장방체내，자장편차솔공제재0.25%이내。결과론증료기작위균균자장원적가행성，여해모곽자선권상비，무론재균균도방면환시재균균장구대소방면도유흔대우세。
A standard source of homogeneous strength magnetic field is essential to calibrating various magnetic measurement equipments. The magnetic field distribution of four square coils which are taken as the standard magnetic field source is deduced theoretically. The magnetic field of square four-coil is simulated with Maxwell software as well, which agrees with the theoretical calculation very well. In axial direction and vertical axis, we analyzed the magnetic field uniformity of square four-coil. The result shows that it can produce magnetic field of high uniformity in a considerable area around the device center. For the square four-coil with width of 1m, the deviation of magnetic field is within 0.25% in the central cuboid with length and width of 0.2m, height of 0.4m, proving the feasibility of square four-coil as homogeneous magnetic field source. Comparing with Helmholtz coils, square four-coil has significant advantages on both uniformity and field scope as standard homogeneous field generating devices.