| 摘要: |
| 在磁通门磁强计正交三分量探头的引用中，对于被测磁矩，探头结构在中心位置磁场强度的同点性将直接影响检测结果的真实可靠性。本文针对单分量探头、偏心放置单分量探头、六芯式正交三分量探头等几种偏心结构模式，对被测近源磁矩产生的中心场同点性模型作了分析与研究。通过建立x、y、z三方向不同探头之间的偏心模型，获得元磁矩在不同偏心模型下探头区域平均场值与实际产生的场值之间的差异和区别；并且就磁场强度的检测读值与实际场强的偏差系数与磁芯长度，偏心距，场源距系数，不同磁芯间方位、距离等的关系作了详细的分析计算，得到了有效计算结果和数据。 |
| 关键词: 跑道型 磁通门 磁强计 探头 同点性 模型 |
| 基金项目: |
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| Analysis and Research to Identity of Sensor of Runway Pattern Flue-gate Magnetometers |
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Wu Weiquan1, Zhang Songyong2
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1. Shanghai Research Center of Engineering Technology for Space Environment Simulation & Verification,;2. Institute of Logistics & Engineering, Shanghai Maritime University
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| Abstract: |
| For the measured magnetic moment, with the application of three-orthogonal-components sensors of flux-gate magnetometer, the identity of magnetic field strength in the structural centre of the sensors will have a direct impact on the authenticity of the testing results. This paper analyzes and studies the identity models of centre magnetic fields produced by the tested near-source magnetic moments based on several eccentric structure patterns such as single component sensors, eccentric-placed single component sensors and three-orthogonal-components sensors with six magnetic cores. By eccentric models established through 3 directions (x, y and z axis), obtains the difference between unit-moment’s average and actual value of magnetic fields under different model’s magnetic core areas. It also performs detailed analysis and calculations based on deviation coefficients between magnetic field strength detected by the magnetometer and actual magnetic field strengths, magnetic core lengths, eccentric distances, source distance coefficients, directions and distances between different magnetic cores so as to receive effective data and results. |
| Key words: runway pattern flue-gate magnetometers sensor identity model |
