L2-l elimination of overflow oscillations in 2-D digital filters described by roesser model with external interference

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Abstract

Two-dimensional (2-D) digital filters can be corrupted by external interferences, but no stability criteria have yet been established. This brief proposes a new l2-l stability criterion for the absence of limit cycles in 2-D digital filters that are described by Roesser model with external interference. Our new criterion ensures the attenuation of the effect of external interference on 2-D digital filters to a prescribed level. This criterion also guarantees the asymptotic stability result without external interference. The proposed criterion is represented in terms of linear matrix inequality, which can be verified by using existing numerical packages. We use an illustrative example to demonstrate the effectiveness of the proposed criterion.

Original languageEnglish
Article number6508866
Pages (from-to)361-365
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Volume60
Issue number6
DOIs
Publication statusPublished - 2013

Keywords

  • External interference
  • finite word-length effect
  • l-l criterion
  • linear matrix inequality (LMI)
  • two-dimensional (2-D) digital filter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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