Brief paper: A unified synchronization criterion for impulsive dynamical networks

  • Authors:
  • Jianquan Lu;Daniel W. C. Ho;Jinde Cao

  • Affiliations:
  • Department of Mathematics, Southeast University, Nanjing 210096, China and Department of Mathematics, City University of Hong Kong, Hong Kong, China;Department of Mathematics, City University of Hong Kong, Hong Kong, China;Department of Mathematics, Southeast University, Nanjing 210096, China

  • Venue:
  • Automatica (Journal of IFAC)
  • Year:
  • 2010

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Abstract

This paper focuses on the problem of globally exponential synchronization of impulsive dynamical networks. Two types of impulses are considered: synchronizing impulses and desynchronizing impulses. In previous literature, all of the results are devoted to investigating these two kinds of impulses separately. Thus a natural question arises: Is there any unified synchronization criterion which is simultaneously effective for synchronizing impulses and desynchronizing impulses? In this paper, a unified synchronization criterion is derived for directed impulsive dynamical networks by proposing a concept named ''average impulsive interval''. The derived criterion is theoretically and numerically proved to be less conservative than existing results. Numerical examples including scale-free and small-world structures are given to show that our results are applicable to large-scale networks.