基于光纤光栅传感器的结构故障定位方法  

Method of damage location in a structure based on fiber Bragg grating sensors

作　　者：刘长卫[1] 赵勇[1] 胡开博[1] 倪行洁[1] 赵婷婷[1] 

机构地区：[1]清华大学自动化系

出　　处：《光电工程》2007年第4期136-139,共4页Opto-Electronic Engineering

摘　　要：提出了一种实现结构故障定位和故障实时监测的新方法。该方法利用光纤光栅传感网络测量结构应变,得到结构的挠度矩阵,分析故障前后挠度矩阵变化,计算得出故障定位向量,进而确定损伤区域,实现了结构故障准确定位和健康状况实时监测。实验结果表明,上述方法大大提高了故障定位的准确度和实时性。A novel method for real-time location and monitoring of damage in a structure was proposed. Strain data of structure could be acquired by Fiber Bragg Grating （FBG） sensor network. The method compared the flexibility matrix derived from strain data before and after damage, and the Damage Location Vectors （DLVs） was calculated, which could locate the damage area. and realize precise damage location and real time structural health monitoring. The experiment result shows that the method greatly improves accuracy and real-time performance of damage location.

关 键 词：光纤光栅传感器 故障定位 挠度方法 数据融合 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]