宽光谱激光器非接触振动测试中的信号还原方法  

Signal retrieve method in wide spectrum laser non-contact vibration measurement

作　　者：王超[1] 唐璜[1] 肖倩[1] 贾波[1] 

机构地区：[1]复旦大学材料科学系,上海200433

出　　处：《仪器仪表学报》2009年第12期2676-2679,共4页Chinese Journal of Scientific Instrument

基　　金：科技部创新方法工作专项项目(2008IM041200)资助

摘　　要：以宽光谱激光器作为光源,利用自制的全光纤干涉系统来进行非接触式振动测试。对激光光谱结构特性所引起的干涉条纹幅度变化进行了理论分析和实验证明。并且通过解线性方程组来补偿得到的干涉信号,在还原振动信号时消除宽光谱失真。Using an all-fiber interferometer with wide spectrum laser source to measure vibration is introduced. The interference fringe envelop decay caused by wide spectrum laser source under large amplitude vibration is analyzed and verified. The interference signals are retrieved through solving linear equations and the wide spectrum distortion while demodulating the vibration signal is eliminated.

关 键 词：激光振动仪 全光纤干涉系统 非接触测试 信号补偿 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]