Uncertainty remodeling for robust control of linear time-invariant plants1

Gábor Rödönyi, József Bokor

Research output: Contribution to journalArticle


The paper proposes a measure of robust performance based on frequency domain experimental data that allows nonconservative modeling of uncertainty. Given the nominal model of the plant and closed-loop performance specifications the iterative control design and remodeling of model uncertainty based on that measure leads to a controller with improved robust performance. The structured dynamic uncertainty is allowed to act on the nominal model in a linear fractional transformation (LFT) form. The proposed method is a modification of the structured singular value with implicit constraints on model consistency. The usefulness of the method is demonstrated on a vehicle control simulation example.

Original languageEnglish
Pages (from-to)55-62
Number of pages8
JournalPeriodica Polytechnica Electrical Engineering
Issue number1-2
Publication statusPublished - 2009


  • Robust control
  • Structured dynamic uncertainty
  • Uncerting modeling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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