Title :
Stabilization of a Ginzburg-Landau model of vortex shedding by output feedback boundary control
Author :
Aamo, Ole Morten ; Smyshlyaev, Andrey ; Krstic, Miroslav ; Foss, Bjarne A.
Author_Institution :
Dept. of Eng. Cybern., NTNU, Trondheim, Norway
Abstract :
In this paper we design exponentially convergent observers for a Ginzburg-Landau model of vortex shedding in viscous flow past a bluff body. Measurements are restricted to be taken at one point mid-stream or collocated with the actuation which is applied on the cylinder surface. The observers are used in conjuction with state feedback boundary controllers designed in previous work to yield solutions to the output feedback boundary control problem for attenuating vortex shedding. Simulations are provided to demonstrate the performance of the output feedback scheme.
Keywords :
Ginzburg-Landau theory; distributed parameter systems; flow control; observers; plastic flow; stability; state feedback; vortices; Ginzburg-Landau model stabilization; bluff body; exponentially convergent observers; output feedback boundary control; output feedback boundary control problem; state feedback boundary controllers; viscous flow; vortex shedding; Actuators; Aerodynamics; Engine cylinders; Laboratories; Navier-Stokes equations; Output feedback; Partial differential equations; Pressure control; State feedback; Velocity control;
Conference_Titel :
Decision and Control, 2004. CDC. 43rd IEEE Conference on
Print_ISBN :
0-7803-8682-5
DOI :
10.1109/CDC.2004.1428766
