Testing and Modeling Gas Turbines Using Multisine Signals and Frequency-Domain Techniques-Reference-Cited by-同舟云学术

Testing and Modeling Gas Turbines Using Multisine Signals and Frequency-Domain Techniques

Published:1999-07-01 Issue:3 Volume:121 Page:451-457
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Evans C.¹,Borrell A.¹,Rees D.¹

Affiliation:

1. University of Glamorgan, School of Electronics, Pontypridd, CF37 1DL, Wales, United Kingdom

Abstract

The frequency-domain identification of gas turbine dynamics is discussed. Models are directly estimated from engine data and used to validate linearized thermodynamic models derived from the engine physics. This work is motivated by the problems previously encountered when using time-domain methods. A brief overview of frequency-domain techniques is presented and the design of appropriate multisine test signals is discussed. Practical results are presented for the modelling of the fuel feed to shaft speed dynamics of a twin-spool engine. The gathered data are analyzed and the frequency response functions of the engine are estimated. The identification of parametric s-domain models is discussed in detail and a comparison made between the identified models and the linearized thermodynamic models. The influence of engine nonlinearities on the linear models is also examined.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/121/3/451/5889467/451_1.pdf

Reference19 articles.

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3. Evans C. , ReesD., and JonesL., 1995, “Identifying Linear Models of Systems Suffering Nonlinear Distortions, With a Gas Turbine Application,” IEE Proceedings, Control Theory and Applications, Vol. 142, No. 3, pp. 229–240.

4. Evans, C., 1998, “Identification of Linear and Nonlinear Systems Using Multisine Signals, With a Gas Turbine Application,” PhD thesis, University of Glamorgan, School of Electronics, Wales, UK.

5. Fitchie, J. W., White, S. W., Cronshaw, R. H., and Willcocks, H. J., 1959, “An Experimental and Theoretical Study of the Response of a Two Shaft Turbojet Subjected to Small Disturbances,” National Gas Turbine Establishment (UK), Note NT 420.

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