NDLI: Parametric control of combustion thermo-acoustic instabilities

Content Provider	IEEE Xplore Digital Library
Author	Al-Masoud, N. Singh, T.
Copyright Year	1993
Abstract	In this brief, we present a parametric controller design for thermo-acoustic combustion instabilities in a propulsion system. A generalized wave equation describes the dynamic behavior of second-order nonlinear oscillations. The control algorithm is developed based on the first two modes using the time-averaged simplification of the governing coupled nonlinear system equations. The closed-loop control law design is based on finding an optimal phase angle such that the heat release produced by secondary oscillatory fuel injection is out of phase with the mode's pressure oscillations, and on finding the limits on the controller gain, to ensure the system stability. These gains are then optimized using three different performance indices, namely, integral of the time absolute error (ITAE), integral of the absolute error (IAE), and finally, integral of square of the error (ISE). Simulations illustrate that the proposed techniques are able to effectively attenuate the unwanted oscillations.
Sponsorship	IEEE Control Systems Society
Starting Page	1076
Ending Page	1083
Page Count	8
File Size	760901
File Format	PDF
ISSN	10636536
Volume Number	13
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Combustion Control systems Optimal control Pressure control Temperature control Propulsion Partial differential equations Nonlinear dynamical systems Nonlinear control systems Couplings wave equation Combustion instabilities control Galerkin approximation harmonic control nonlinear parametric controller
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering

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