Design and simulation of turbofan engine digital electronic nozzle control system

Abstract

Fun surge often occurred for an augmented turbofan engine, which is related to the mechanical hydraulic nozzle control system (NCS). In order to fully realize the potential of the engine, it is now hoped that the mechanical hydraulic controller will be changed to a digital electronic controller. First of all, the control law of the engine is introduced. Secondly, modification scheme of a digital electronic NCS is proposed and a digital electronic controller is designed. Then the model of engine and NCS was established in AMESim and Simulink, and the closed-loop simulation of the NCS was realized. Finally, it is verified that the Digital Electronic NCS can ensure the normal operation of the engine in different inlet conditions and different dynamic processes, and its behavior is better than the mechanical hydraulic NCS. The digital electronic controller helps to reduce the occurrence of faults.