光纤Bragg光栅横向均匀受压传感系统中的遗传算法分析方法  

Analytical Method of Genetic Algorithm in Fiber Bragg Grating Sensing System with Transverse Uniform Press

作　　者：李文超[1] 尹闻闻 王会波 

机构地区：[1]燕山大学电气工程学院自动化仪表系

出　　处：《传感技术学报》2007年第12期2601-2605,共5页Chinese Journal of Sensors and Actuators

基　　金：基于光学小波滤波和FBG技术分布式声发射波振动加速度测量的研究资助(6037702)

摘　　要：基于遗传算法的基本原理和光纤Bragg光栅横向均匀受压的理论,对准静态光纤光栅横向均匀受压传感系统提出了一种遗传算法分析方法,建立了相关的数学模型,确立了与遗传算法相对应的目标函数,研究了种群长度、进化代数、交叉率、变异率选值对算法影响,给出了遗传算法的优化参数组合.同时,构建了相应的实验系统,完成了相关的仿真与实验,仿真和实验结果表明,将所提出的分析方法应用于准静态光纤光栅横向均匀受压传感系统中,其精度可达到0.91%.Based on the basic theory of Genetic Algorithm and fiber Bragg grating sensing with transverse uniform press,an analytical method of Genetic Algorithm applied to wavelength demodulation in quasi-static fiber grating sensing system with transverse uniform press is proposed and the relevant mathematical model is established.The objective function related with Genetic Algorithm is also established.The effect of population size,generations,crossover ratio and mutation ratio to Genetic Algorithm is studied,and the optimization parameters of Genetic Algorithm are given.Meanwhile,the relevant experimental system is constructed,and the related simulation and experiments are finished.The simulation and experiments show that the analytical method proposed can be applied to quasi-static fiber grating sensing system with transverse uniform press,and the accuracy can achieve to 0.91%.

关 键 词：光纤BRAGG光栅 横向均匀压力 遗传算法 准静态 

分 类 号：O439[机械工程—光学工程]