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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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:|
|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.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||04 Dec 2010 00:16|
|Last Modified:||26 Dec 2012 12:42|
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