Nonlinear gas turbine computer modelling using NARMAX structures

Author

Chiras, Neophytos ; Evans, Ceri ; Rees, David

Author_Institution

Sch. of Electron., Univ. of Glamorgan, Wales, UK

Volume

3

fYear

2000

fDate

2000

Firstpage

1278

Abstract

This paper provides a comparison of techniques used to model the fuel flow to shaft speed relationship of a Spey gas turbine engine. Linear models are examined and the need for nonlinear modelling is justified. A technique based on nonparametric data analysis is proposed, to simplify the identification of a nonlinear model of the engine. A NARMAX model is identified and its performance validated against a range of small and large signal engine tests

Keywords

aerospace engines; control system analysis; data analysis; frequency-domain analysis; gas turbines; identification; nonlinear systems; NARMAX model; NARMAX structures; Spey gas turbine engine; computer modelling; fuel flow; identification; large signal engine tests; linear models; nonlinear gas turbine; nonlinear model; nonlinear modelling; nonparametric data analysis; shaft speed; small signal engine tests; Aircraft propulsion; Amplitude estimation; Autoregressive processes; Data analysis; Electronic mail; Engines; Joining processes; Shafts; Testing; Turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE

Conference_Location

Baltimore, MD

ISSN

1091-5281

Print_ISBN

0-7803-5890-2

Type

conf

DOI

10.1109/IMTC.2000.848682

Filename

848682