In this paper, a 2 degrees-of-freedom multimode controller design for the Rolls Royce Spey turbofan engine is presented. The controller is designed via discrete time -optimization; it provides robust stability against coprime factor uncertainty, and a degree of robust performance in the sense of making the closed-loop system match a prespecified reference model. Multimode control logic is developed to preserve structural integrity of the engine by limiting engine variables to specified safe values. A simple strategy for antiwindup and bumpless transfer between controllers, based on the Hanus anti-windup scheme (1987, “Conditioning Technique, A General Anti-Windup and Bumpless Transfer Method,” Automatica, 23(6), pp. 729–739) and the observer-based structure of the controller, is presented. The structure of the overall switched controller is described. Actual engine test results using the Spey engine test facility at Pyestock are presented. The controller is shown to perform a variety of tasks, its multimode operation is illustrated and improvements offered on existing engine control systems are discussed.
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January 2010
Research Papers
Design and Implementation of a Digital Multimode Controller for the Spey Turbofan Engine
Raza Samar,
Raza Samar
Department of Electronic Engineering,
Mohammad Ali Jinnah University
, Islamabad 44000, Pakistanrsamar@jinnah.edu.pk
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Ian Postlethwaite
Ian Postlethwaite
Control and Instrumentation Research, Department of Engineering,
e-mail: ixp@le.ac.uk
University of Leicester
, Leicester LE1 7RH, UK
Search for other works by this author on:
Raza Samar
Department of Electronic Engineering,
Mohammad Ali Jinnah University
, Islamabad 44000, Pakistanrsamar@jinnah.edu.pk
Ian Postlethwaite
Control and Instrumentation Research, Department of Engineering,
University of Leicester
, Leicester LE1 7RH, UKe-mail: ixp@le.ac.uk
J. Dyn. Sys., Meas., Control. Jan 2010, 132(1): 011010 (11 pages)
Published Online: December 17, 2009
Article history
Received:
July 4, 2008
Revised:
October 6, 2009
Online:
December 17, 2009
Published:
December 17, 2009
Citation
Samar, R., and Postlethwaite, I. (December 17, 2009). "Design and Implementation of a Digital Multimode Controller for the Spey Turbofan Engine." ASME. J. Dyn. Sys., Meas., Control. January 2010; 132(1): 011010. https://doi.org/10.1115/1.4000656
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