Control of nonstationary LPV systems

Mazen Farhood, Geir E. Dullerud

Research output: Contribution to journalArticlepeer-review

Abstract

This paper considers control of nonstationary linear parameter-varying systems, and is motivated by interest in the control of nonlinear systems along prespecified trajectories. In the paper, synthesis conditions are derived for such systems using an operator theoretical framework with the ℓ2 induced norm as the performance measure. These conditions are given in terms of structured operator inequalities. In general, evaluating the validity of these conditions is an infinite dimensional convex optimization problem; however, if the initial system is eventually periodic, they reduce to a finite dimensional semi-definite programming problem. The paper concludes with an in-depth example on the control of a two-thruster hovercraft along an eventually periodic trajectory.

Original languageEnglish (US)
Pages (from-to)2108-2119
Number of pages12
JournalAutomatica
Volume44
Issue number8
DOIs
StatePublished - Aug 2008

Keywords

  • LFT
  • LMIs
  • Linear parameter varying systems
  • Periodic orbits
  • Time-varying systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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