Sensors Hard-Failure Diagnosis of Engine Control System Based Accommodation Kalman Filter

In recent years, Full-Authority Digital Electronic Control (FADEC) system needs some component redundancy in order to attain sufficient reliability. So sensors failure diagnosis method is developed in this paper. Accommodation filters have been used in hard-failure and simulations have been done in fault sensors in the paper. From the simulation results, the conclusion can be deduced that the fault diagnosis method designed using kalman filter can detect sensor failures successfully, isolate sensed signal, and accommodate signal timely.