基于LabVIEW的航空发动机气路故障分析系统设计

针对在航空发动机气路中带电粒子的电荷信号微弱,传感器工作环境恶劣的条件下,监测航空发动机气路故障的问题,设计了一种能适应高温、高噪声等恶劣工作环境并对电荷信号灵敏监测模型,使用LabVIEW软件建立了航空发动机气路不同工况中静电信号的子V1,对信号进行采集和分析.通过对航空发动机多种工况的模拟和试验,建立了航空发动机气路故障分析系统.结果表明:该监测模型分辨率高、信噪比高、稳定性好,可稳定地监测航空发动机的多种工况,为航空发动机气路故障诊断提供可靠的依据.

Design of aeroengine gas path fault analysis system based on LabVIEW

Aiming at problem of how to monitor the fault of aeroengine gas path under the condition where electrostatic signal of charged particles in aeroengine gas path is weak,and harsh working environment of the sensor,a monitoring model which can adapt to high temperature,high noise and is sensitive to charge signal is designed. The LabVIEW software is used to establish the sub VI of the static electricity signal in different operating conditions to acquire and analyze signal. Through simulate and experiment of various working condition of aeroengine,an aeroengine gas path fault analyze system is established. Result show that the model has advantages of high resolution,high signal-to-noise ratio,high stability and can steadily monitor various working condition of aeroengine and provide a reliable basis for fault diagnosis of aero engine gas path.