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首页> 外文期刊>Sensors Journal, IEEE >Tunable Magnetoelectric Bending Resonance for Sensing Static Magnetic Fields
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Tunable Magnetoelectric Bending Resonance for Sensing Static Magnetic Fields

机译:可调磁电弯曲共振,用于感测静磁场

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摘要

Bilayered magnetostrictive-piezoelectric composites exhibit a resonant enhancement of magnetoelectric coupling when operated under bending mode. Such composites are of importance for achieving ultrasensitive magnetometers for quasi-static magnetic fields detection by measuring the parameter variations near the resonant frequency. The detection performance is limited by diverse noise processes appearing in the composite and associated electronics, such as extrinsic interferences due to environmental vibrations and temperature variations and also loss noise related to energy dissipations in the composite. The noise source, in bending mode, is due to thermomechanical dissipations. In this paper, the field detection performance relating to this noise in a doubly clamped magnetoelectric composite is investigated by means of modulation techniques.
机译:当在弯曲模式下运行时,双层磁致伸缩压电复合材料表现出磁电耦合的共振增强。这种复合材料对于通过测量谐振频率附近的参数变化来实现用于准静态磁场检测的超灵敏磁力计非常重要。检测性能受到复合材料和相关电子设备中出现的各种噪声过程的限制,例如,由于环境振动和温度变化引起的外部干扰,以及与复合材料中的能量耗散有关的损耗噪声。弯曲模式下的噪声源是由于热机械耗散。在本文中,通过调制技术研究了在双钳位磁电复合材料中与此噪声有关的场检测性能。

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