Stability of positive-position feedback controllers with low-frequency restrictions

Emiliano Pereira, Sumeet Sunil Aphale

Research output: Contribution to journalArticle

8 Citations (Scopus)
4 Downloads (Pure)

Abstract

Positive-position feedback has been presented as a suitable alternative to the negative-velocity feedback approach taken in active damping applications. This has motivated the application of Negative-Imaginary Systems theory to study the stability of controllers based on positive-position feedback. However, this theory cannot be applied in cases where low-frequency dynamics of the sensors, actuators and/or controllers hinder the application of Negative-Imaginary stability conditions. This work extends the theory of Negative-Imaginary Systems by obtaining simple analytical stability conditions when such low-frequency restrictions are present.
Original languageEnglish
Pages (from-to)2900-2909
Number of pages10
JournalJournal of Sound and Vibration
Volume332
Issue number12
Early online date4 Feb 2013
DOIs
Publication statusPublished - 10 Jun 2013

Fingerprint

constrictions
controllers
low frequencies
Feedback
Controllers
System theory
Actuators
Damping
actuators
damping
sensors
Sensors

Keywords

  • vibration control
  • stability

Cite this

Stability of positive-position feedback controllers with low-frequency restrictions. / Pereira, Emiliano; Aphale, Sumeet Sunil.

In: Journal of Sound and Vibration, Vol. 332, No. 12, 10.06.2013, p. 2900-2909.

Research output: Contribution to journalArticle

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