A new approach to stability of neural networks with time-varying delays

  • Authors:
  • Jigen Peng;Hong Qiao;Zong-ben Xu

  • Affiliations:
  • Institute for Information and System Science, Faculty of Science, Xi'an Jiaotong University, Xi'an 710049, P.R. China;Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;Institute for Information and System Science, Faculty of Science, Xi'an Jiaotong University, Xi'an 710049, P.R. China

  • Venue:
  • Neural Networks
  • Year:
  • 2002

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Abstract

The stability of neural networks is a prerequisite for successful applications of the networks as either associative memories or optimization solvers. Because the integration and communication delays are ubiquitous, the stability of neural networks with delays has received extensive attention. However, the approach used in the previous investigation is mainly based on Liapunov's direct method. Since the construction of Liapunov function is very skilful, there is little compatibility among the existing results. In this paper, we develop a new approach to stability analysis of Hopfield-type neural networks with time-varying delays by defining two novel quantities of nonlinear function similar to the matrix norm and the matrix measure, respectively. With the new approach, we present sufficient conditions of the stabliity, which are either the generalization of those existing or new. The developed approach may be also applied for any general system with time delays rather than Hopfield-type neural networks.