Model-based control of cavity oscillations. I - Experiments
Abstract
An experimental investigation of acoustic mode noise suppression was conducted in a cavity using a digital controller with a linear control algorithm. The control algorithm was based on flow field physics similar to the Rossiter model for acoustic resonance. Details of the controller and results from its implementation are presented in the companion paper by Rowley, et al. Here the experiments and some details of the flow field development are described, which were done primarily at Mach number 0.34 corresponding to single mode resonance in the cavity. A novel method using feedback control to suppress the resonant mode and open-loop forcing to inject a non-resonant mode was developed for system identification. The results were used to obtain empirical transfer functions of the components of resonance, and measurements of the shear layer growth for use in the design of the control algorithm.
Additional Information
© 2002 by David R. Williams. Published by the American Institute of Aeronautics and Astronautics, Inc. with permission. Published Online: 22 Aug 2012. We are grateful for the support provided by the Air Force Office of Scientific Research through contract F49620-98-1-0276. The program was managed by Dr. Steven Walker. Actuator development at IIT was done by Mr. Byung-Hun Kim with partial support from the Aerospace Illinois: a NASA Space Grant Consortium. A special thanks goes to Mr. Ken Ostasiewski, Mr. Tim Hayden and SSgt. Buddy Johns for their invaluable assistance during the experiments over the last three years.Attached Files
Published - WilliamsRowleyColoniusEtAl2002.pdf
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Additional details
- Alternative title
- Model-Based Control of Cavity Oscillations – Part 1: Experiments
- Eprint ID
- 97261
- Resolver ID
- CaltechAUTHORS:20190718-165126408
- Air Force Office of Scientific Research (AFOSR)
- F49620-98-1-0276
- Illinois Space Grant Consortium
- Created
-
2019-07-23Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Other Numbering System Name
- AIAA Paper
- Other Numbering System Identifier
- 2002-0971