| 基于磁致伸缩效应的FBG电流传感器 |
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| 引用本文： | 李宝树,钟小江,仝卫国.基于磁致伸缩效应的FBG电流传感器[J].电工技术学报,2009,24(1). |
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| 作者姓名： | 李宝树 钟小江 仝卫国 |
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| 作者单位： | 1. 华北电力大学电气与电子工程学院,保定,071003
2. 华北电力大学控制科学与工程学院,保定,071003 |
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| 摘 要： | 将光纤光栅(FBG)与超磁致伸缩材料(GMM)进行固性连接,并置于电流线圈产生的变化磁场中,则GMM在磁场中产生的轴向应变与粘贴于其上的FBG波长漂移相关联,通过解调FBG波长漂移量就可以获得电流的相关信息.本文应用GMM与匹配FBG相结合的方式成功地实现了对传感信号的解调,并采用小波分析技术对信号进行了滤波处理,减小了噪声对测量误差的影响,最后应用基于RBF神经网络的数据融合技术对传感器的温度误差进行了补偿,实验结果证明测量误差有大幅度下降.
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| 关 键 词： | 小波分析 数据融合 温度补偿 |
Fiber Bragg Grating Current Sensor Based on Magnetostrictive Effect |
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| Li Baoshu,Zhong Xiaojiang,Tong Weiguo.Fiber Bragg Grating Current Sensor Based on Magnetostrictive Effect[J].Transactions of China Electrotechnical Society,2009,24(1). |
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| Authors: | Li Baoshu Zhong Xiaojiang Tong Weiguo |
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| Affiliation: | North China Electric Power University Baoding 071003 China |
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| Abstract: | The sensor makes the fiber bragg grating(FBG) adhibited with the giant magnetostrictive material(GMM). The strain change of GMM is transferred to FBG, which caused by the change of its magnetic field from the current coil, then the current will be detected from modulating the FBG change. The paper succeeds in modulating the sensing signal by the way of connecting FBG with matching GMM, and the signal is processed by wavelet analysis technology, which can reduce the error effect from the noise and get the cl... |
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| Keywords: | FBG GMM |
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