NDLI: Experimental Results and Bifurcation Analysis on Scaled Feedback Control for Subsonic Cavity Flows

Content Provider	IEEE Xplore Digital Library
Author	Yuan, X. Caraballo, E. Debiasi, M. Little, J. Serrani, A. Ozbay, H. Samimy, M.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH (Yuan, X.)
Abstract	In this paper, we present the latest results of our ongoing research activities in the development of reduced-order models based feedback control of subsonic cavity flows. The model was developed using the proper orthogonal decomposition of particle image velocimetry images in conjunction with the Galerkin projection of the Navier-Stokes equations onto the resulting spatial eigenfunctions. Stochastic estimation method was used to obtain the state estimation of the Galerkin system from real time surface pressure measurements. A linear-quadratic optimal controller was designed to reduce cavity flow resonance and tested in the experiments. Real-time implementation shows a significant reduction of the sound pressure level within the cavity, with a remarkable attenuation of the resonant tone and a redistribution of the energy into various modes with lower energy levels. A mathematical analysis of the performance of the LQ control, in agreement with the experimental results, is presented and discussed
Starting Page	1
Ending Page	6
File Size	5515565
Page Count	6
File Format	PDF
ISBN	0978672011
DOI	10.1109/MED.2006.328754
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-28
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	MEDITERRANEAN CONTROL ASSOCIATION
Subject Keyword	Real time systems Stochastic systems Bifurcation Reduced order systems Eigenvalues and eigenfunctions Feedback control Pressure measurement Moment methods State estimation Navier-Stokes equations
Content Type	Text
Resource Type	Article

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