Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


osu1158032317.pdf (2.55 MB)

ETD Abstract Container

Abstract Header

Model-based feedback control of subsonic cavity flows - control design

Yuan, Xin
http://rave.ohiolink.edu/etdc/view?acc_num=osu1158032317

Abstract Details

2006, Doctor of Philosophy, Ohio State University, Electrical Engineering.
In this dissertation, we present and discuss development, implementation, and experimental results of reduced-order model based feedback control of subsonic cavity flows. Model based feedback control of subsonic flows have been studied and implemented by the flow control group at the Collaborative Center of Control Science (CCCS) at the Ohio State University (OSU). The team, composed of researchers from the departments of Electrical Engineering and Mechanical Engineering at the Ohio State, the Air Force Research Laboratory, and NASA Glenn Research Center, possesses synergistic capabilities in all of the required multidisciplinary areas of experimental data acquisition, computational flow simulation, low dimensional modeling, controller design, and experimental validation. The goal of the CCCS effort is to develop tools and methodologies for the use of closed-loop aerodynamic flow control to manipulate the flow over maneuvering air vehicles. The problem chosen for the initial study by the CCCS flow team is control of the resonant noise generated by subsonic flow past an open cavity. This phenomenon is characterized by a strong coupling between the flow dynamics and the flow-induced acoustic field that can lead to self-sustained resonance. Two approaches towards model development have been studied in this dissertation. One aims at representing the physical properties of the system by dynamical models in transfer function forms, referred to as the physics-based linear model in this dissertation. The other approach we have followed is based on proper orthogonal decomposition (POD) and Galerkin projection methods involving the flow governing equations, which is referred to as the nonlinear model or Galerkin model in the dissertation. Each model mentioned above can be further divided into two types: model derived from numerical simulation data and model derived from real time experimental data. Different types of feedback controllers have been designed for corresponding flow models. Closed-loop system performance has been evaluated by both numerical simulation and experimental implementation as well. These results confirm that model based feedback control represents a promising approach to flow control even in its current infancy state.
Hitay Ozbay Andrea Serrani (Advisor)
Engineering, Aerospace
model-based; feedback control; flow control

Recommended Citations

Citations

  • Yuan, X. (2006). Model-based feedback control of subsonic cavity flows - control design [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1158032317

    APA Style (7th edition)

  • Yuan, Xin. Model-based feedback control of subsonic cavity flows - control design. 2006. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1158032317.

    MLA Style (8th edition)

  • Yuan, Xin. "Model-based feedback control of subsonic cavity flows - control design." Doctoral dissertation, Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1158032317

    Chicago Manual of Style (17th edition)

osu1158032317
1,369
© 2006, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.