铰链
加速度
加速度计
固有频率
灵敏度(控制系统)
MATLAB语言
光纤布拉格光栅
对称(几何)
振动
材料科学
块(置换群论)
线性
声学
横截面
结构工程
电子工程
计算机科学
工程类
物理
光纤
电信
几何学
数学
经典力学
操作系统
作者
Hoang-Dang Le,Chia‐Chin Chiang,Chi-Ngon Nguyen,Hsiang-Cheng Hsu
标识
DOI:10.1016/j.yofte.2023.103308
摘要
A flexible hinge fiber Bragg grating (FBG) acceleration sensor based on the symmetry mass block is proposed to address poor transverse performance and lower sensitivity in medium- and high-frequency. The dual mass block design causes the FBG fiber to vibrate while simultaneously being stretched or compressed in the reverse direction. Thus, the FBG's sensitivity is greatly improved, and its deformation is double that of the single hinge construction. MATLAB software theoretically investigates and optimizes the sensor's natural frequency and sensitivity. In contrast, ANSYS analyzes static structural stress and simulation. The implementation of the sensors is assessed through an experimental test. The accelerometer's natural frequency is 1550 Hz, and its working stability frequency range is flat at 400–1000 Hz. The amplitude anti-interference of the sensor is approximately 3.27%, and the average sensitivity's linearity is roughly 66 pm/g. Developing medium and high-frequency vibration data is essential for the health monitoring and evaluation of constructions such as bridges, railroads, and tunnels.
科研通智能强力驱动
Strongly Powered by AbleSci AI