Backstepping stabilization of the linearized Saint-Venant–Exner model

Ababacar Diagne, Mamadou Diagne, Shuxia Tang, Miroslav Krstic

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Using backstepping design, exponential stabilization of the linearized Saint-Venant–Exner (SVE) model of water dynamics in a sediment-filled canal with arbitrary values of canal bottom slope, friction, porosity, and water–sediment interaction, is achieved. The linearized SVE model consists of two rightward convecting transport Partial Differential Equations (PDEs) and one leftward convecting transport PDE. A single boundary input control strategy with actuation located only at the downstream gate is employed. A full state feedback controller is designed which guarantees exponential stability of the desired setpoint of the resulting closed-loop system. Using the reconstruction of the distributed state through a backstepping observer, an output feedback controller is established, resulting in the exponential stability of the closed-loop system at the desired setpoint. The proposed state and output feedback controllers can deal with both subcritical and supercritical flow regimes without any restrictive conditions.

Original languageEnglish
Pages (from-to)345-354
Number of pages10
JournalAutomatica
Volume76
DOIs
StatePublished - Feb 1 2017

Keywords

  • Backstepping
  • Hyperbolic PDEs
  • Output feedback controller
  • Saint-Venant–Exner
  • State feedback controller

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