Brief paper: Diagonal stability of a class of cyclic systems and its connection with the secant criterion

  • Authors:
  • Murat Arcak;Eduardo D. Sontag

  • Affiliations:
  • Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA;Department of Mathematics, Rutgers University, New Brunswick, NJ, USA

  • Venue:
  • Automatica (Journal of IFAC)
  • Year:
  • 2006

Quantified Score

Hi-index 22.16

Visualization

Abstract

We consider a class of systems with a cyclic interconnection structure that arises, among other examples, in dynamic models for certain biochemical reactions. We first show that a ''secant'' criterion for local stability, derived earlier in the literature, is in fact a necessary and sufficient condition for diagonal stability of the corresponding class of matrices. We then revisit a recent generalization of this criterion to output strictly passive systems, and recover the same stability condition using our diagonal stability result as a tool for constructing a Lyapunov function. Using this procedure for Lyapunov construction we exhibit classes of cyclic systems with sector nonlinearities and characterize their global stability properties.