LQG-Balanced Truncation Low-Order Controller for Stabilization of Laminar Flows

Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 127)

Abstract

Recent theoretical and simulation results have shown that Riccati based feedback can stabilize flows at moderate Reynolds numbers. We extend this established control setup by the method of LQG-balanced truncation. In view of practical implementation, we introduce a controller that bases only on outputs rather than on the full state of the system. Also, we provide a very low dimensional observer so that the control actuation can be computed in an online fashion.

Keywords

Navier-Stokes equation model order reduction stabilization output feedback 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Max Planck Institute for Dynamics of Complex Technical SystemsMagdeburgGermany

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