航空发动机量测系统的故障检测

Fault Detection of Measuring Channel in Aeroengine FADEC System

本文研究航空发动机全权限数字电子控制中的量测系统的故障检测,着重研究绕回检测技术。

Fault detection of measuring channel in aeroengine Full Authority Digital Electronic Control (FADEC) system is investigated,especially aroundback detection is researched.The causes of the measuring channel faults have been revealed,meanwhile,the principle figure of the aroundback detection is also provided.The simulation of A/D transformer for the aroundabck detection simulation tests indicates that multi-aroundback detection range is larger than singe-aroundback one.When the aroundback detection processes small signals,it may cause error.The accuracy is 100% in detecting short circuit and open circuit by aroundback detection.