Feedback control of flow resonances using balanced reduced-order models

Simon J. Illingworth, Aimee S. Morgans, Clarence W. Rowley

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


This paper investigates the use of balanced reduced-order models for the feedback control of flow resonances. Specifically, the Eigensystem Realization Algorithm is used to find balanced reduced-order models of the linear dynamics of such flow resonances. The method is applied first to a computational problem in direct numerical simulations of cavity resonances, and then to a lab-scale experiment of combustion oscillations. Although the resulting reduced-order models both have fewer than 10 degrees of freedom, the feedback controllers that are based on them perform very well, with closed-loop stability achieved over a wide range of operating conditions.

Original languageEnglish (US)
Pages (from-to)1567-1581
Number of pages15
JournalJournal of Sound and Vibration
Issue number8
StatePublished - Apr 11 2011

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Acoustics and Ultrasonics


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