| 引用本文: | 解伟男,梁慧敏.基于巨磁阻抗效应磁场测量传感器研究[J].哈尔滨工业大学学报,2011,43(8):109.DOI:10.11918/j.issn.0367-6234.2011.08.021 |
| XIE Wei-nan,LIANG Hui-min.Research of magnetic sensor based on GMI effect[J].Journal of Harbin Institute of Technology,2011,43(8):109.DOI:10.11918/j.issn.0367-6234.2011.08.021 |
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| 摘要: |
| 针对非晶材料巨磁阻抗效应,设计并实现了一种新型磁场测量传感器,根据非晶丝的双峰特性,分析传感器的工作原理,设计传感器的闭环负反馈结构,建立了传感器的数学模型.在此基础上,通过分析传感器的误差传递函数,提出一种比例积分控制规律,可有效地消除传感器的稳态误差,提高传感器的线性度.实验结果表明:在该控制器的作用下,传感器的线性度优于0.2%,灵敏度达到1.759V/Oe,所设计的传感器具有较好的性能指标. |
| 关键词: 磁传感器 巨磁阻抗效应 非晶丝 |
| DOI：10.11918/j.issn.0367-6234.2011.08.021 |
| 分类号:TP212 |
| 基金项目:中国博士后科学基金资助项目(20090460908) |
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| Research of magnetic sensor based on GMI effect |
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XIE Wei-nan, LIANG Hui-min
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| Abstract: |
| Based on the giant magneto-impedance principle of amorphous materials,a novel magnetic sensor is presented and developed.According to double peaks feature of the amorphous,the working principle is ana-lyzed.The sensor structure with closed loop negative feedback is designed,and the mathematical model of the sensor is deduced.By analyzing the error transfer function of the sensor,PI controller is proposed,which can e-liminate the steady state error and improve the linearity.The experimental results show that the performance of the sensor is improved by PI controller.The linearity is within 0.2%and the sensitivity is up to 1.759 V/Oe. |
| Key words: magnetic sensor giant magneto-impedance effect amorphous |
