| GMI磁传感器内部灵敏度与噪声特性研究 |
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| 引用本文： | 蒋颜玮,房建成,王三胜.GMI磁传感器内部灵敏度与噪声特性研究[J].测试技术学报,2011,25(2):183-188. |
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| 作者姓名： | 蒋颜玮 房建成 王三胜 |
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| 作者单位： | 1. 北京航空航天大学新型惯性仪表与导航系统技术国防重点学科实验室,功能材料与器件研究室,北京100191;防化研究院,北京102205
2. 北京航空航天大学新型惯性仪表与导航系统技术国防重点学科实验室,功能材料与器件研究室,北京100191 |
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| 基金项目： | 国家“863”高科技资助项目(2007AA12Z327) |
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| 摘 要： | 建立了非晶带GMI敏感元件的灵敏度和噪声理论模型,计算了其灵敏度和磁噪声在不同易轴方向和外磁场应用条件下的响应特性.通过改变易轴方向、外磁场及直流偏置场对非晶带敏感元件进行了优化,其内部磁噪声达到了fT/(√HZ)水平.分析了内部灵敏度、工作点和磁噪声水平对GMI磁传感器性能的影响,结果表明,在GMI磁传感器设计时,应...
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| 关 键 词： | 巨磁阻抗(GMI) 磁传感器 非晶带 灵敏度 磁噪声 |
Study on Properties of the Intrinsic Sensitivity and Noise of GMI Magnetic Sensor |
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| JIANG Yanwei,FANG Jiancheng,WANG Sansheng.Study on Properties of the Intrinsic Sensitivity and Noise of GMI Magnetic Sensor[J].Journal of Test and Measurement Techol,2011,25(2):183-188. |
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| Authors: | JIANG Yanwei FANG Jiancheng WANG Sansheng |
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| Affiliation: | JIANG Yanwei1,2,FANG Jiancheng1,WANG Sansheng1(1.Laboratory of Function Materials and Device,Key Laboratory of Fundamental Science for National Defense of Novel Inertial Instrument and Navigation System Technology,Beihang University,Beijing 100191,China,2.Institute of Chemical Defense,Beijing 102205,China) |
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| Abstract: | The theory model of the sensitivity and magnetic noise of a GMI sensing element consisting of an anisotropic amorphous ribbon was established.For different anisotropy directions and applied external fields,a calculation of the intrinsic sensitivity and magnetic noise of the GMI magnetic sensor was presented.Through varying anisotropy direction,external field and the DC bias field,the amorphous-ribbon sensing element was numerically optimized and the intrinsic noise reached fT/Hz.The effect of the intrinsic ... |
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| Keywords: | Giant magneto-impedance(GMI) magnetic sensor amorphous ribbon sensitivity magnetic noise |
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