光通信技术2024，Vol.48Issue(1)：7-12,6.DOI:10.13921/j.cnki.issn1002-5561.2024.01.002
基于FBG传感器阵列反演结构振动位移的监测方法
Monitoring method of structural vibration displacement based on the inversion of FBG sensor array
摘要
Abstract
Aiming at the problem that the existing vibration displacement monitoring methods are easy to be affected by the envi-ronment and the accuracy is not high,a monitoring method of structural vibration displacement based on the inversion of fiber Bragg grating(FBG)sensor array is proposed.This method uses FBG sensor array to obtain multi-point strain and single point accele-ration data in the process of structural vibration.Firstly,the curve reconstruction algorithm based on orthogonal curvature and the obtained strain data are used to reconstruct the dynamic displacement of each point of the structure.Then,the displacement data derived from the curve reconstruction algorithm is fused with the single point acceleration data at the same position by Kalman filtering algorithm to obtain more accurate displacement data.The experimental results show that the method can reconstruct the vibration shape of the monitoring structure at any time successfully,and the relative root-mean-square error of the vibration dis-placement reconstruction of the cantilever aluminum plate and the simple supported pipeline is less than 5.5%and 7%respectively.关键词
光纤布喇格光栅/振动监测/动态形变/位移/卡尔曼滤波Key words
fiber Bragg gratings/vibration monitoring/dynamic deformation/displacement/Kalman filter分类
信息技术与安全科学引用本文复制引用
黄新敬,程彤遥,马金玉,张志鹏,黄漪,李健..基于FBG传感器阵列反演结构振动位移的监测方法[J].光通信技术,2024,48(1):7-12,6.基金项目
国家自然科学基金项目(批准号:62073233)资助. （批准号:62073233）
