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요약정보
动态激励下的FBG应变传感器原位校准方法 / In-situ Calibration Method of FBG Strain Sensor under Dynamic Excitation
Resource Type
Academic Journal
Authors
陆叶
;
龚华平
;
蔡静怡
;
樊其明
;
赵春柳
;
LU Ye
;
GONG Huaping
;
CAI Jingyi
;
FAN Qiming
;
ZHAO Chunliu
Source
光子学报 / Acta Photonica Sinica
. 52(1):116-123
Subject
光纤布拉格光栅
动态校准
数据序列匹配
应变传感器
数据错位
Language
Chinese
ISSN
1004-4213
Online Access
Web of Science
Scopus
JCR 저널정보
Find it @ DONGA
초록
针对光纤光栅应变传感器测量桥梁结构动态应变值的准确性问题,提出了一种动态激励下的光纤光栅应变传感器的校准方法.采用等强度悬臂梁模拟桥梁结构,在等强度悬臂梁末端瞬间悬挂不同重量的砝码来模拟桥梁上汽车产生的动态激励.以电阻应变片作为参考传感器,光纤光栅应变传感器作为待校准传感器,将这两个传感器的测量数据序列进行比对.针对传感器的测量数据序列出现的时间错位问题,采用互相关算法对参考传感器和待校准传感器的测量数据进行数据匹配.在光纤光栅应变传感器有初始值的情况下进行测量值校准的研究.实验结果表明,该方法有效解决了测量数据序列的时间错位问题,实现了光纤光栅应变传感器的动态校准,采用不同重量的砝码作为激励源对校准结果没有影响,1529 nm和1547 nm波长的光纤光栅应变传感器灵敏度校准系数与静态标定结果基本一致.
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