Controller design for the Navier-Stokes system. Part I: Concept & numerical results

Source file is available as :   Postscript Document

Author(s) : Michael Hinze , Daniel Wachsmuth

Preprint series of the Institute of Mathematics, Technische Universität Berlin
Preprint 11-2003

MSC 2000

49J20 Optimal control problems involving partial differential equations
93B52 Feedback control

Abstract :
We present a widely applicable construction recipe for closed-loop feedback controllers of nonlinear dynamical systems. Its basic idea consists in approximately solving certain instantaneous optimization problems for the discrete-in-time dynamical system. Easy incorporation of control constraints is one key feature of the recipe. The instationary Navier-Stokes equations serve as model application. In the first part of the work, we introduce the basic construction recipes and present numerical results for several closed-loop feedback control laws derived with the recipe. The stability analysis is contained in the second part of the work.

Keywords : Instantaneous control, Closed loop control, Navier-Stokes equations, control constraints