Whole flight envelop corrected equilibrium manifold modeling for a turbofan engine

Based on the aero-engine resemble theory and the nonlinear system equilibrium manifold theory,a corrected equilibrium manifold modeling method for aero-engine's simulation in whole flight envelop was put forward.First,according to the corrected variables,by extending the concept of equilibrium manifold,corrected equilibrium manifold was presented.Then,a two-dimension schedule variable was defined though compressor rotor's corrected speed and Mach number,and was used to fit the corrected equilibrium manifold.Next,following the modeling frame of nonlinear system equilibrium manifold theory,a whole flight envelop corrected equilibrium manifold model for a turbofan engine was presented.Last,some simulation about this turbofan engine's dynamic response at different situations were shown,and were accordant with the corresponding result of this turbofan engine's component nonlinear model.In all,this model in this paper exhibites well about applicability,precision and real-time simulation for a turbofan engine.