基于非线性系统平衡流形的某型涡扇发动机建模研究

基于非线性系统平衡流形式建模理论,直接利用涡扇发动机试车数据,通过辨识计算,建立了各主要状态参数与燃油流量和高压转子转速的状态方程关系式,由此建立了某型涡扇发动机的实时动态仿真模型.并且仿真结果与试验吻合好,且其单步计算耗时较短,从而为该涡扇发动机开展实时性仿真、进一步完善发动机性能分析和改进其控制系统设计奠定了良好的基础.

Real-time simulation model for a turbofan engine based on nonlinear system equilibrium manifold theory

Based on the nonlinear system equilibrium manifold theory,a simplified real-time simulation model for a turbofan engine was developed.According to the engine test data,an engine model,which could represent the states space equation between the engine corrected-states and the corrected fuel and corrected rotate speed,was presented.And a set of simulating result was accordant with the engine test result.In all,the work in this paper shows well trait about applicability,precision and real-time simulation of this real-time simulation model for a turbofan engine.And this model is very suit to the early research for the control systems of the aero-engine.