航空发动机旋转叶片振动监测系统研究  

Research on Rotating Blade Vibration Monitoring System for Aero Engine

作　　者：段发阶[1] 张玉贵[1] 欧阳涛[1] 叶声华[1] 钟志才[2] 石小江[2] 范志强[2] 滕光蓉[2] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072 [2]中国燃气涡轮研究院,四川江油621703

出　　处：《光学与光电技术》2008年第1期48-51,共4页Optics & Optoelectronic Technology

基　　金：国家自然基金(50375110)资助项目;教育部新世纪优秀人才支持计划资助项目

摘　　要：介绍了叶尖定时测量旋转叶片的原理,设计的光纤束式传感结合光电接收实现了高精度的弱光检测。基于"5+2"传感器均布方案,利用双速率对叶片振动信号进行采样,通过"5+2"处理算法实现了振动频率的准确辨识,并在某航空设备上进行了高速模拟转子实验,实验表明测得频率与应变仪结果一致。The vibration measurement principle of blade tip-timing is introduced in this paper. The designed fiber-optic bun- dle sensor can realize high-accuracy weak light detection combining photoelectric receiver. Based on ＂5＋2＂ scheme of equispaced sensors, vibrating blades＇ signals are sampled by double rate. Vibration frequency is identified accurately through ＂5＋ 2＂ processing algorithm. Besides, high-speed simulator rotor experiment is done on aero equipment, and measured frequency of this system is in accordance with that of strain gauge.

关 键 词：航空发动机 光纤传感器 叶尖定时 旋转叶片 振动测量 

分 类 号：TN247[电子电信—物理电子学]