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  • Research Article
  • Open Access

Extended LaSalle's Invariance Principle for Full-Range Cellular Neural Networks

  • 1Email author,
  • 1,
  • 1 and
  • 1
EURASIP Journal on Advances in Signal Processing20092009:730968

  • Received: 15 September 2008
  • Accepted: 20 February 2009
  • Published:


In several relevant applications to the solution of signal processing tasks in real time, a cellular neural network (CNN) is required to be convergent, that is, each solution should tend toward some equilibrium point. The paper develops a Lyapunov method, which is based on a generalized version of LaSalle's invariance principle, for studying convergence and stability of the differential inclusions modeling the dynamics of the full-range (FR) model of CNNs. The applicability of the method is demonstrated by obtaining a rigorous proof of convergence for symmetric FR-CNNs. The proof, which is a direct consequence of the fact that a symmetric FR-CNN admits a strict Lyapunov function, is much more simple than the corresponding proof of convergence for symmetric standard CNNs.


  • Direct Consequence
  • Information Technology
  • Signal Processing
  • Equilibrium Point
  • Quantum Information

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Authors’ Affiliations

Department of Information Engineering, University of Siena, 53100 Siena, Italy