Adaptive Dynamic Modeling and Simulation for Variable Cycle Engine

摘要

Advanced aircraft engine needs higher unit thrust and lower fuel consumption nowadays. The variable cycle engine (VCE) could meet these requirements, and it becomes the top choice of the new generation aircraft. It is a difficult task to find a satisfactory dynamic model that can well match the VCE during its life time due to the performance deterioration with the increase of service time. Besides, the more variables of control and actuator are involved. This paper presents an adaptive dynamic modeling method for the VCE based on the state estimation. It mainly contains the nonlinear component level modeling of VCE and self-tuning dynamic model combined with a distributed extended Kalman filter. The digital simulations are carried out to verify the effectiveness of the VCE modelling methodology.