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Robust Stabilization of Discrete-Time Systems with Time-Varying Delay: An LMI Approach

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  • Valter J. S. Leite
  • Márcio F. Miranda

Abstract

Sufficient linear matrix inequality (LMI) conditions to verify the robust stability and to design robust state feedback gains for the class of linear discrete-time systems with time-varying delay and polytopic uncertainties are presented. The conditions are obtained through parameter-dependent Lyapunov-Krasovskii functionals and use some extra variables, which yield less conservative LMI conditions. Both problems, robust stability analysis and robust synthesis, are formulated as convex problems where all system matrices can be affected by uncertainty. Some numerical examples are presented to illustrate the advantages of the proposed LMI conditions.

Suggested Citation

  • Valter J. S. Leite & Márcio F. Miranda, 2008. "Robust Stabilization of Discrete-Time Systems with Time-Varying Delay: An LMI Approach," Mathematical Problems in Engineering, Hindawi, vol. 2008, pages 1-15, March.
    • Handle: RePEc:hin:jnlmpe:875609
    DOI: 10.1155/2008/875609
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