白光干涉型光纤加速度计的误差分析  

Error Analysis of a Fiber Optic Accelerometer Based on White Light Interference

作　　者：王明超[1] 王学锋[1,2] 王钊[1,2] 唐才杰[1,2] 黄建业[1] 

机构地区：[1]北京航天控制仪器研究所,北京100854 [2]北京市光纤传感系统工程技术研究中心,北京100094

出　　处：《光子学报》2016年第6期41-47,共7页Acta Photonica Sinica

基　　金：十二五预研项目(No.617010207)资助~~

摘　　要：针对所研制的一种能够测量加速度直流信号的光纤加速度计,建立了影响该加速度计测量准确度的光学原理误差、交叉灵敏度误差以及温度引起的误差模型,并对该模型进行了仿真和实验分析.结果表明:随着信噪比增加以及光谱采样间隔减小,解调算法的测量误差水平降低,测量准确度可达到4.5×10-5g;在1倍重力加速度下交叉灵敏度误差为1.8mg;当环境温度20℃时,温度每升高(降低)1℃,会使标度因数增加(减小)0.79‰.The model of the optical priciple error,the cross sensitivy error and the error induced by temperature were built. These errors have affected the measurement precision of a fiber optic accelerometer which can be used to measure the direct current signal of acceleration.With a purpose of obtaining the exact data,the simulation and experiment were conducted.Results show that,the measurement errors of interrogation algorithm decrease with the signal-to-noise ratio increasing and the spectrum sampling interval shortening,and the measurement accury is 4.5×10-5;under the effect of one time gravitational acceleration,the cross sensitivity error is 1.8 mg;the scale factor will increase（decreas）0.79‰ when the temperature rises（drops）1℃.

关 键 词：光纤光学 光纤加速度计 白光干涉 误差分析 交叉灵敏度 标度因数 

分 类 号：U666.1[交通运输工程—船舶及航道工程] TN253[交通运输工程—船舶与海洋工程]