加速度计
灵敏度(控制系统)
光纤布拉格光栅
振动
声学
频率响应
材料科学
补偿(心理学)
悬臂梁
光纤
电子工程
光学
工程类
计算机科学
物理
电气工程
复合材料
操作系统
心理学
精神分析
作者
Jianzhi Li,Bohao Shen,Desheng Zhao,Wanjie Zhang,Bohua Sun
标识
DOI:10.1109/jlt.2021.3117867
摘要
We present the modelling, design, and characterization of a novel fiber Bragg grating (FBG) accelerometer based on a bearing. A cantilevered mechanical structure with bearings can effectively decrease energy loss during vibration and enhance sensitivity. The principle of the accelerometer is analysed by a simplified model. The influence of the structural parameters of the proposed sensor on its sensitivity and resonance frequency is further analysed for structural optimization. Meanwhile, its dynamic behaviour and frequency response characteristics are analysed by numerical simulations. In addition, dual-FBG not only enables temperature compensation but also enhances sensitivity. Experimental results indicate that the FBG accelerometer provides a linear response over a broad frequency range from 0.5 Hz to 40 Hz, with a high sensitivity of 575.8 pm/g. This FBG accelerometer with low frequency and high sensitivity provides effective support for the design of sensors of the same type.
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