光学与光电技术, 2008, 6 (1): 0048, 网络出版: 2010-06-08
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
航空发动机 光纤传感器 叶尖定时 旋转叶片 振动测量 aero engine optical fiber sensor blade tip-timing rotating blade vibration measurement
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。
Abstract
The vibration measurement principle of blade tip-timing is introduced in this paper. The designed fiber-optic bundle 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.
段发阶, 张玉贵, 欧阳涛, 叶声华, 钟志才, 石小江, 范志强, 滕光蓉. 航空发动机旋转叶片振动监测系统研究[J]. 光学与光电技术, 2008, 6(1): 0048. DUAN Fa-jie, ZHANG Yu-gui, OUYANG Tao, YE Sheng-hua, ZHONG Zhi-cai, SHI Xiao-jiang, FAN Zhi-qiang, TENG Guang-rong. Research on Rotating Blade Vibration Monitoring System for Aero Engine[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2008, 6(1): 0048.