基于神经网络的光纤传感损伤定位的研究

Research on Damage Detection Based on Optical Fiber Sensing and Neural Networks

简述了光纤传感器和BP神经网络的基本原理;提出了利用一个简单的三层BP神经网络来拟合光纤传感器输出信号与复合材料损伤位置区域之间的关系;阐明了损伤定位过程中的操作方法,并利用MATLAB神经网络工具箱进行仿真。实验结果表明,此方法可以对复合材料的损伤进行定位。

The fundamental principles of optical fiber sensing and BP networks are introduced. A method to simulate the relationship between the optical fiber sensing output signals and the damage position of composites using a simple three - layer - BP network is presented. Operating process in damage detection is illustrated and simulated using the neural network toolbox in MATLAB. The result indicates that the damage position of the eomposites can be detected by the method.