H∞ Control System Design of the Magnetic Suspension System Considering Initial State Uncertainties

Toru Namerikawa, Masayuki Fujita

Research output: Contribution to journalLetter

7 Citations (Scopus)


This paper deals with H∞ control attenuating initial-state uncertainties, and its application to a magnetic suspension system. H∞ control problem, which treats as a mixed attenuation of disturbance and initial-state uncertainty for linear time-invariant systems in the infinite-horizon case, is examined. The mixed attenuation supplies H∞ controls with good transients and assures H∞ controls of robustness against initial-state uncertainty. We apply this method to a magnetic suspension system, and evaluate attenuation property of the proposed disturbance and initial-state uncertainty via simulations and experiments.

Original languageEnglish
Pages (from-to)1094-1100
Number of pages7
JournalIEEJ Transactions on Electronics, Information and Systems
Issue number6
Publication statusPublished - 2003 Jan
Externally publishedYes



  • DIA Control
  • H∞ Control
  • Initial-State Uncertainties
  • Magnetic Suspension Systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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