摘要
光纤传感器是一种建立在光纤、光电子技术基础上声信号传感器。但是除声波外,传感器的结构振动同样会引起光纤长度改变,产生噪声。为提高传感器抗机械振动的性能,研究了用于分析传感器结构振动特性的方法,考察了光纤层在产生机械振动噪声情况下的响应。同时,还采用了光纤层均质化的方法,以克服传感器结构复杂性带来的有限元建模困难。
An optic-fiber sensor is an acoustic sensor based on optic-fiber technology and photoelectricity one.Besides sound pressure,however,structural vibration of the sensor will also lead to its fiber length change and produce noise.To increase the sensor's anti-vibration ability,a method is conducted to study its structural vibration analysis and the fiber response in the case of mechanical vibration.In addition,since the structure of the optic-fiber sensor is complicated,a method of fiber layer homogenization is used to overcome difficulties in finite element modeling(FEM).
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第4期40-42,共3页
Journal of Vibration and Shock
关键词
光纤传感器
有限元
均质化
频率响应
optic-fiber sensor
FEM
homogenization
frequency response
