航空发动机转速测量与故障诊断方法研究

Study on Methods of Speed Measurement and Fault Diagnosis for Aero-engin

航空发动机普遍采用磁电式转速传感器测量转速,针对其信号特点设计了一种调理电路,该电路包含相应的故障诊断功能;基于80C196KC单片机平台设计了采集程序,该程序能自动根据转速大小采取不同的处理方式,并能滤除干扰。同时,采用硬件电路和软件相结合的方式,设计了完整的采集通道故障诊断方法。

In aero-engine, magnetic speed sensor is wildly used to measure the speed. According to its signal characteristics, a signal process circuit is designed, which contains the corresponding fault diagnosis function.Based on 80 C196 KC MCU platform, the acquisition program is designed, which can automatically adopt different calculation methods according to the speed and frequency signal size, and can filter out interference. At the same time,a complete fault diagnosis method of acquisition channel is designed by combining hardware circuit and software.