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A parametric Lyapunov equation approach to the design of low gain feedback

  • University of Virginia

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Low gain feedback has found several applications in constrained control systems, robust control and nonlinear control. Low gain feedback refers to a family of stabilizing state feedback gains that are parameterized in a scalar and go to zero as the scalar decreases to zero. Such feedback gains can be constructed either by an eigenstructure assignment algorithm or through the solution of a parametric algebraic Riccati equation (ARE). The eigenstructure assignment approach leads to feedback gains in the form of a matrix polynomial in the parameter, while the ARE approach requires the solution of an ARE for each value of the parameter. This paper proposes an alternative approach to low gain feedback design based on the solution of a parametric Lyapunov equation. Such an approach possesses the advantages of both the eigenstructure assignment approach and the ARE based approach. It also avoids the possible numerical stiffness in solving a parametric ARE and the structural decomposition of the open loop system that is required by the eigenstructure assignment approach.

Original languageEnglish
Title of host publicationProceedings of the 26th Chinese Control Conference, CCC 2007
Pages678-682
Number of pages5
DOIs
StatePublished - 2007
Event26th Chinese Control Conference, CCC 2007 - Zhangjiajie, China
Duration: 26 Jul 200731 Jul 2007

Publication series

NameProceedings of the 26th Chinese Control Conference, CCC 2007

Conference

Conference26th Chinese Control Conference, CCC 2007
Country/TerritoryChina
CityZhangjiajie
Period26/07/0731/07/07

Keywords

  • Actuator saturation
  • Global stabilization
  • Low gain feedback
  • Parametric Lyapunov equation
  • Semi-global stabilization
  • Set invariance

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