检测滤波器在FADEC系统传感器FDI中的应用研究

APPLICATION OF DETECTION FILTER TO SENSOR FAULT DETECTION AND ISOLATION

研究将检测滤波器应用于全权限航空发动机控制系统（ＦＡＤＥＣ）的传感器故障检测和隔离（ＦＤＩ）。完整设计了针对于某型ＦＡＤＥＣ系统传感器的检测滤波器系统，然后利用非线性发动机模型进行了仿真。数字仿真结果表明，检测滤波器是十分有效的。

Detection filter,which is actually a specific class of observers,can fix the output error direction of the system,so that it can be associated with a particular failure mode and its known design failure direction.The detection filter algorithm developed by White & Speyer is applied to a sensor fault detection and isolation system in an aeroengine control system.A nonlinear engine computer simulation model is set up and used to process the close loop simulation which includes sensor fault detection and isolation system.An isolation method is presented to isolate the fault sensor location.The results of the simulation show that the present fault detection and isolation system is very effective.