光纤布拉格光栅
光学
解调
材料科学
干涉测量
信号(编程语言)
滤波器(信号处理)
光纤传感器
光环行器
光纤
计算机科学
声学
物理
电信
频道(广播)
程序设计语言
计算机视觉
作者
Bangtian Xu,Xuezhi Zhang,Junfeng Jiang,Shuang Wang,Xiaojun Fan,Lei Jiang,Yuqing Li,Yue Chu
出处
期刊:Applied Optics
[The Optical Society]
日期:2019-09-10
卷期号:58 (26): 7251-7251
被引量:10
摘要
In this paper, a structural damage identification algorithm based on a single fiber Bragg grating (FBG) sensor is proposed. The signal detected by the FBG can be analyzed by the wavelet packet decomposition and back propagation neural network to obtain the damage location information. A high-speed FBG demodulation system based on a tunable Fabry–Perot filter and unbalanced Mach–Zehnder (M-Z) interferometer is designed to respond to a signal with a frequency range from 0 to 4 kHz, which will increase the sensing accuracy. This algorithm is verified by the aluminum plate model, which can simulate the generation of damage in reality. The experimental results show that a single FBG sensor is enough to realize accurate damage location identification according to this algorithm, and identification accuracy can reach 90.0%.
科研通智能强力驱动
Strongly Powered by AbleSci AI