This paper aims to develop an applicable nonlinear control technique for aeroengines. An approximate nonlinear model is presented and a rational identification procedure is given. Exact input-output feedback linearization can be easily performed on this model. The controller derived can approximately linearize the plant such that the close-loop system exhibits linear input-output dynamics locally. Modeling and controlling are exemplified and validated by a small turbofan engine. Simulation results illustrate that the modeling accuracy is good and linear close-loop system dynamics are achieved.
Issue Section:
Gas Turbines: Controls, Diagnostics, and Instrumentation
Keywords:
aerospace engines,
aircraft control,
closed loop systems,
feedback,
jet engines,
linearisation techniques,
nonlinear control systems
Topics:
Control equipment,
Design,
Engines,
Feedback,
Modeling,
Dynamics (Mechanics),
Robustness,
Signals,
Errors,
Simulation
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.Copyright © 2011
by American Society of Mechanical Engineers
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