| 各向异性磁阻传感器灵敏度在线辨识技术 |
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| 引用本文： | 李希胜,刘艳霞,康瑞清.各向异性磁阻传感器灵敏度在线辨识技术[J].北京科技大学学报,2011(7):895-898. |
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| 作者姓名： | 李希胜 刘艳霞 康瑞清 |
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| 作者单位： | 北京科技大学信息工程学院; |
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| 基金项目： | 教育部新世纪优秀人才支持计划资助项目(No.NCET-09-0216); 中央高校基本科研业务费专项(No.FRF-TP-09-017B); 国家高技术研究发展计划资助项目(No.2007AA12Z320); 国家自然科学基金资助项目(No.60574090) |
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| 摘 要： | 提出了一种基于灵敏度在线辨识技术的灵敏度变化补偿方法,使用北京科技大学研制的各向异性磁阻传感器BKMC-21进行了实验研究.结果表明:未采用灵敏度变化补偿技术的磁场测量输出结果在磁力计通电后发生剧烈变化;磁力计输出需30min才能趋于稳定,在此期间灵敏度变化超过20%.采用灵敏度变化补偿技术的磁场测量输出结果在磁力计通电后保持平稳,磁力计输出在整个过程中灵敏度变化不超过2%.由以上实验结果可以看出,本文所提出的基于各向异性磁阻传感器灵敏度在线辨识技术的磁力计灵敏度补偿方法能有效地解决磁力计灵敏度变化问题.
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| 关 键 词： | 磁传感器 各向异性 磁阻 灵敏度分析 温度 |
Sensitivity online recognition of anisotropic magnetoresistive sensors |
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| LI Xi-sheng,LIU Yan-xia,KANG Rui-qing School of Information Engineering,University of Science , Technology Beijing,Beijing ,China.Sensitivity online recognition of anisotropic magnetoresistive sensors[J].Journal of University of Science and Technology Beijing,2011(7):895-898. |
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| Authors: | LI Xi-sheng LIU Yan-xia KANG Rui-qing School of Information Engineering University of Science Technology Beijing Beijing China |
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| Institution: | LI Xi-sheng,LIU Yan-xia,KANG Rui-qing School of Information Engineering,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | A sensitivity compensation method was proposed for anisotropic magnetoresistive(AMR) sensors based on sensitivity online recognition.An experimental study on this method was carried out with an AMR sensor BKMC-21 developed by University of Science and Technology Beijing.The experimental results show that the magnetic field output of BKMC-21 without sensitivity compensation varies greatly after switching the power supply on.It takes about 30 min to be stable,and during this period the sensitivity variation i... |
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| Keywords: | magnetic sensors anisotropy magnetoresistance sensitivity analysis temperature |
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