| 基于超导的重力梯度敏感线圈电磁特性分析 |
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| 引用本文： | 贾明,杨功流.基于超导的重力梯度敏感线圈电磁特性分析[J].导航与控制,2011(3):54-57. |
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| 作者姓名： | 贾明 杨功流 |
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| 作者单位： | 北京航空航天大学仪器科学与光电工程学院;北京航空航天大学仪器科学与光电工程学院 |
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| 基金项目： | 中央高校基本科研业务费专项资金（编号：YWF-10-01-B30） |
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| 摘 要： | 为了利用超导块体的完全抗磁性与敏感线圈的电感变化测量重力梯度,需要对敏感线圈的电磁特性进行分析.利用盘状超导敏感线圈产生磁场,首先分析单匝线圈在场点产生的磁感应强度,再通过叠加得到场点的总磁感应强度.选取设计参数对线圈外小间距范围内的磁感应强度进行计算可知,径向分量沿线圈径向保持稳定值,而轴向分量变化较大.质量块对总磁...
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| 关 键 词： | 超导 重力梯度 敏感线圈 电磁特性 |
Electromagnetism Property Analysis of Gravity Gradient Sensing Coil Based on Superconductor |
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| JIA Ming and YANG Gong-liu.Electromagnetism Property Analysis of Gravity Gradient Sensing Coil Based on Superconductor[J].Navigation and Control,2011(3):54-57. |
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| Authors: | JIA Ming and YANG Gong-liu |
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| Institution: | School of Instrument Science and Opto-electronics Engineering, Beihang University;School of Instrument Science and Opto-electronics Engineering, Beihang University |
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| Abstract: | For measuring gravity gradient based on superconducting perfect diamagnetism and inductance change of sensing coil, the electromagnetism property analysis of sensing coil is needed. Disk superconductor coil can produce magnetic field, and the magnetic flux density of arbitrary point created by single-turn coil is analyzed. Then total magnetic flux density is obtained, and parameters are designed for computing. Radial component maintains stability and axial component changes with coil radius. The proof mass makes radial component double and axial component clear. Magnetic loop system design leads to the magnetic field energy between proof mass and coil being total. Approximate formulas for coil inductance and magnetic force are deduced. Simulation results approve analysis process and indicate that the errors between formula results and simulation results are no more than 5%. |
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| Keywords: | superconductor gravity gradient sensing coil electromagnetism property |
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