【摘要】 基于叶尖定时原理设计一套旋转叶片振动实时检测系统,该系统主要由光纤传感、数据采集、振动分析三个部分组成。光纤传感的核心是叶尖定时传感器和光电转换模块的设计,数据采集实现对转换后的脉冲数据进行高速采集、预处理和与计算机之间的高速通信,振动分析则由计算机软件进行实时处理并显示分析结果。整套系统在现场某大型压气机上进行了原理性验证,同时在高速模拟转子上通过了实时性验证,异步振动分析结果与应变片监测的数据完全吻合,保证了整套系统最终应用于压气机叶片振动的在线实时监测。更多还原

【Abstract】 A vibration monitoring system for rotating blade based on tip-timing is developed,and it consists of three parts,i.e. optical-fiber sensing,data acquisition and vibration analysis.The designs of tip-timing sensors and photoelectric converter are the important part of optical=fiber sensing.High-speed collection,preprocessing and communication with computer for transformed pulse data are realized in data acquisition part.In addition the real-time data processing and analytical result display are completed in vibration analysis part.The verification of the principle of the whole set system is completed on an on-site large compressor,while the real-time verification is passed on a high-speed stimulated rotor.The analysis results of asynchronous vibration are completely consistent with the data by strain gauge,thereby ensuring the successful application of the whole set of system in real-time on-line monitoring of the vibration of compressor blades.更多还原