Controller design for elastic vibrating systems using partial eigenstructures

Jun Imai, Kiyoshi Wada

Research output: Contribution to journalArticlepeer-review


An approach is presented for controller design of elastic vibrating systems using partial knowledge of eigenstructures. An unstructured uncertainty class is characterized with least magnitude of additive perturbation in frequency domain, which includes all the systems governed by a differential equation with certain norm bounds of unknown input and output operators and partially known eigenparameters. Then a sufficient condition is given for the existance of a finite dimensional controller meeting the specsifications: for all the systems of the uncertainty class, all eigenvalues of the closed loop system be assigned on the open half plane with some robust stability degree and the sensitivity function be bounded with some frequency weighting function. Several design techniques are also illustrated using an example of an ideal cantilevered flexible beam.

Original languageEnglish
Pages (from-to)211-218
Number of pages8
JournalResearch Reports on Information Science and Electrical Engineering of Kyushu University
Issue number2
Publication statusPublished - Sept 1998
Externally publishedYes


  • Finite dimensional controller design
  • Flexible structures
  • Partial differential equations
  • Spillover problem
  • Vibrating modes

ASJC Scopus subject areas

  • General Computer Science
  • Electrical and Electronic Engineering


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