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Rotating Magnetoelectric Sensor for DC Magnetic Field Measurement

机译:用于直流磁场测量的旋转磁电传感器

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摘要

Magnetoelectric (ME) sensors have a significant potential for detection of weak magnetic fields if the mechanical resonance is utilized. Generally, magnetic and electric modulations can be employed for frequency conversion during dc or small ac signal measurements. In this paper, we perform frequency conversion using a rotating ME sensor, which enables us to detect a dc magnetic field without any additional excitation. The sensor, consisted of L-T mode ME laminates whose magnetostrictive layers are magnetized along the length directions but piezoelectric layers are poled along the thickness directions, is more sensitive to a magnetic field along its longitudinal direction. By rotation, the dc magnetic field to be measured generates a sinusoid component in the direction of the sensor's longitudinal axis, which is equivalent to applying an excitation. The experimental results are consistent with the theoretical calculations and demonstrate the feasibility of this proposed modulation method.
机译:如果利用机械共振,则磁电(ME)传感器具有检测弱磁场的巨大潜力。通常,在直流或小的交流信号测量期间,可以将磁调制和电调制用于频率转换。在本文中,我们使用旋转的ME传感器执行频率转换,这使我们能够在没有任何其他激励的情况下检测直流磁场。该传感器由L-T模式ME层压板组成,其磁致伸缩层沿长度方向磁化,而压电层沿厚度方向极化,它对沿其纵向方向的磁场更敏感。通过旋转,要测量的直流磁场在传感器纵轴方向上生成正弦分量,这等效于施加激励。实验结果与理论计算吻合,证明了该调制方法的可行性。

著录项

  • 来源
    《IEEE Transactions on Magnetics》 |2018年第11期|1-3|共3页
  • 作者单位

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Magnetic resonance; Magnetoelectric effects; Magnetostriction; Amorphous magnetic materials; Magnetic field measurement; Frequency modulation;

    机译:磁共振;磁电效应;磁致伸缩;非晶态磁性材料;磁场测量;频率调制;
  • 入库时间 2022-08-18 04:11:57

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