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Disturbance tolerance and rejection of linear systems with imprecise knowledge of actuator input output characteristics

  • University of Virginia

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We study the robustness of linear systems with respect to the disturbances and the uncertainties in the actuator input output characteristics. Disturbances either bounded in energy or bounded in magnitude are considered. The actuator input output characteristics are assumed to reside in a so-called generalized sector bounded by piecewise linear curves. Robust bounded state stability of the closed-loop system is first defined and characterized in terms of linear matrix inequalities (LMIs). Based on this characterization, the evaluation of the disturbance tolerance and disturbance rejection capabilities of the closed-loop system under a given feedback law is formulated into and solved as optimization problems with LMI constraints.

Original languageEnglish
Pages (from-to)1523-1530
Number of pages8
JournalAutomatica
Volume42
Issue number9
DOIs
StatePublished - Sep 2006

Keywords

  • Absolute stability
  • Actuator saturation
  • Disturbances
  • Robustness
  • Uncertainties

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