单轴航空涡扇发动机数学模型辨识

Single-spool turbofan engine model identification

关键词:  涡扇发动机  数学模型辨识  稳态数学模型  实时数学模型  飞行包线

Key words:  Turbofan engine  Model identification  Steady model  Real-time model  Flight envelope

摘要:

依据某型单轴航空涡扇发动机试车数据辨识建立了发动机的全包线、全工况实时动态数学模型。由于试车数据所含噪声较大,辨识方法采用了先建立稳态模型,进而建立实时动、静态数学模型的方法,这种方法可以通过辨识稳态点来消除噪声。验模表明,所建模型精确度很高,且能准确反映发动机性能,并满足实时性需求。

Abstract:

A method application to identify single-spool turbofan engine model was described.The steady model was established.Then the dynamic model was presented.This method can avoid the noise disturbance effectively.Using other experimental data to checkout the model,the result indicates that the precision in model is high.The model can reflect the engine performance accurately with real-time.