Title :
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
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848682
