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Linear theory of active control of pressure oscillations in combustion chambers

Yang, V. and Sinha, A. and Fung, T. (1988) Linear theory of active control of pressure oscillations in combustion chambers. AIAA Papers, AIAA-88-2944 . American Institute of Aeronautics and Astronautics . http://resolver.caltech.edu/CaltechAUTHORS:20101202-115230138

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Abstract

Active control of longitudinal pressure oscillations in combustion chambers has been studied theoretically using a digital state-feedback control technique. The formulation is based on a generalized wave equation which accommodates various influences on combustion, mean flow, unsteady motions, and contol actions. After a procedure equivalent to the Galerkin method, a system of ordinary differential equation governing the amplitude of each oscillatory mode is derived, serving as a basis for the controller design. The control actions is provided by a finite number of point acutators, with the instantaneous chamber conditions monitored by a few sensors. Several important control aspects such as sampling period, locations of sensors and controllers, controllability and observabi1ity have been investigated. As a specific example, the case involving two controlled and two residual (uncontrolled) modes is studied. The control and observation spillover phenomena due to the residual modes are clearly demonstrated.


Item Type:Report or Paper (Report)
Additional Information:© 1988, American Institute of Aeronautics and Astronautics.
Group:Guggenheim Jet Propulsion Center
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center302
AIAA88-2944
Record Number:CaltechAUTHORS:20101202-115230138
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101202-115230138
Official Citation:Linear theory of active control of pressure oscillations in combustion chambers YANG, VIGOR, Pennsylvania State University, University Park; SINHA, ALOK, Pennsylvania State University, University Park AIAA-1988-2944 ASME, SAE, and ASEE, Joint Propulsion Conference, 24th, Boston, MA, July 11-13, 1988
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21128
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Dec 2010 00:16
Last Modified:25 Mar 2014 04:32

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