µ-Synthesis of an Electromagnetic Suspension System

Masayuki Fujita, Toru Namerikawa, Fumio Matsumura, Kenko Uchida

Research output: Contribution to journalArticlepeer-review

77 Citations (Scopus)


This paper deals with µ-synthesis of an electromagnetic suspension system. First, an issue of modeling a real physical electromagnetic suspension system is discussed. We derive a nominal model as well as a set of models in which the real system is assumed to reside. Different model structures and possible model parameter values are fully employed to determine unstructured additive plant perturbations, which directly yield uncertainty frequency weighting function. Second, based on the set of plant models, we setup robust performance control objectives. Third, we make use of the D-K iteration approach for the controller design. Finally, implementing the controller with a digital signal processor, experiments are carried out. With these experimental results, we show robust performance of the designed control system.

Original languageEnglish
Pages (from-to)530-536
Number of pages7
JournalIEEE Transactions on Automatic Control
Issue number3
Publication statusPublished - 1995 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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