Large scale uniform electromagnetic field simulation based on Helmholtz coil
-
摘要: 针对外层空间物理环境模拟系统的技术要求,基于亥姆霍兹线圈的工作原理,采用一对匝数、边长、高度和厚度相同的共轴平行放置的正方形线圈构成了Helmholtz线圈,结合恒流源和单片机控制技术,设计了电磁场模拟系统.采用ANSYS Workbench有限元分析软件对正方形Helmholtz线圈的电磁场分布进行了数值模拟,重点考察了线圈X轴、Y轴和线圈表面附近的电磁场分布,在此基础上设计了线圈结构参数.对所设计的正方形Helmholtz线圈内部12个关键点的电磁场进行了测量,结果表明线圈内的磁感应强度和磁场均匀性能够满足环境模拟系统的要求.Abstract: Considering the technical requirements of the space physical environment simulation system, a square Helmholtz coil was built by a pair of axis symmetric rectangular coils which had the same turns, side length, height and thickness, based on the principle of Helmholtz coils. Combining with the constant current source and MCU control technology, the electromagnetic field simulation system was designed. Adopting finite element analysis software ANSYS Workbench, the magnetic field distribution of the square Helmholtz coil was simulated, and the emphasis of the study was on the electromagnetic field distribution of the coil X-axis, Y-axis and near the surface of the coil. Based on the analysis results, the structure parameters of the square Helmholtz coil were designed. The magnetic flux density of 12 key points was measured inside the designed coil. The results show that the magnetic flux density and uniformity of the magnetic field inside the coil could satisfy the requirements of the space environmental simulation systems.
-
Key words:
- Helmholtz coil /
- uniform magnetic field /
- finite-element /
- ANSYS /
- constant current source
-
[1] 齐燕文. 空间磁环境模拟技术[J].航天器环境工程,2005,22(1): 19-23. Qi Y W.Space magnetic environment simulation technology[J].Spacecraft Environment Engineering,2005,22(1):19-23(in Chinese). [2] Alamgir A K M, Fang J,Gu C,et al.Square Helmholtz coil with homogeneous field for magnetic measurement of longer HTS tapes[J].Physica C:Superconductivity,2005,424(1-2):17-24. [3] Wang J, She S,Zhang S.An improved Helmholtz coil and analysis of its magnetic field homogeneity[J].The Review of Scientific Instruments,2002,73(5):2175-2179. [4] 司文建,周楠, 曹玉松.基于 MATLAB的亥姆霍兹线圈轴线磁场均匀分布的动态仿真[J].许昌学院学报,2010,29(5):72-74. Si W J,Zhou N,Cao Y S.Dynamic simulation of uniform distribution of the Helmholtz coil magnetic field based on MATLAB[J].Journal of Xuchang University,2010,29(5):72-74(in Chinese). [5] 江俊勤. 亥姆霍兹线圈磁场均匀性的研究[J].广东教育学院学报,2006,26(5):61-66. Jiang J Q.A study on the uniformity of the magnetic field of the Helmholtz coil[J].Journal of Guangdong Education Institute, 2006,26(5):61-66(in Chinese). [6] 郑敏. Helmholtz线圈的磁场分布及应用[J].青海大学学报,2005,23(5):63-64. Zheng M.Analysis and applying of magnetic field in Helmholtz coil [J].Journal of Qinghai University,2005,23(5):63-64(in Chinese). [7] Missakian M. Equations for the magnetic field produced by one or more rectangular loops of wire in the same plane[J].Journal of Research of the National Institute of Standards and Technology,2000,105(4):557-564. [8] 刘翠红,王建永. 长方形Helmholtz线圈研究[J].现代科学仪器,2008(2):29-31. Liu C H,Wang J Y.Study on rectangular Helmholtz coin[J].Modern Scientific Instruments,2008(2):29-31(in Chinese). [9] 郑珂,李光蕊. 正方形亥姆霍兹线圈的磁场[J].安康学院学报,2007,19(3):79-81. Zheng K,Li G R.The magnetic field of square Helmholtz coils[J].Journal of Ankang University,2007,19(3):79-81(in Chinese). [10] 谭曦,刘军, 殷建玲.正方形亥姆霍兹线圈的磁场均匀性[J].光学仪器,2012,34(1):39-44. Tan X,Liu J,Yin J L.The magnetic field uniformity of square Helmholtz coils[J].Optical Instruments,2012,34(1):39-44(in Chinese). [11] 刘坤,张松勇, 顾伟.方形亥姆霍兹线圈磁场系统均匀性分析[J].现代电子技术,2012,35(7):190-194. Liu K,Zhang S Y,Gu W.Analysis on magnetic field homogeneity of magnetic system based on square Helmholtz coils[J].Modern Electronics Technique,2012,35(7):190-194(in Chinese). [12] Lee S G, Kang C S,Chang J W.Square loop coil system for balancing and calibration of second-order SQUID gradiometers[J].IEEE Transactions on Applied Superconductivity,2007,17(2): 3769-3772. [13] 刘继亮,李德胜, 林恩怀,等.方形亥姆霍兹线圈结构优化设计[J].仪器仪表学报,2010,31(8):125-128. Liu J L,Li D S,Lin E H,et al.Quadrate Helmholtz coils structure optimization design[J].Chinese Journal of Scientific Instrument,2010,31(8):125-128(in Chinese). [14] 陈修芳. 亥姆霍兹线圈磁场分布及其测量[J].大学物理实验,2009,22(3):125-128. Chen X F.Magnetic field in Helmholtz coil and measurement[J].Physical Experiment of College,2009,22(3):125-128(in Chinese). [15] 李君良,吕玉祥, 魏循,等.亥姆霍兹线圈的磁场及其测量[J].太原理工大学学报,2005,36(5):564-566. Li J L,Lü Y X,Wei X,et al.Magnetic field in Helmholtz loop and measurement[J].Journal of Taiyuan University of Technology,2005,36(5):564-566(in Chinese).
点击查看大图
计量
- 文章访问数: 2120
- HTML全文浏览量: 269
- PDF下载量: 78393
- 被引次数: 0