Brief paper: Stability problem of systems with multiple delay channels

  • Authors:
  • Keqin Gu

  • Affiliations:
  • Department of Mechanical and Industrial Engineering, Southern Illinois University, Edwardsville, IL 62026-1805, USA

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

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Abstract

A new form of coupled differential-difference equations with one delay in each channel is proposed to model systems with multiple delays. This formulation has significant advantage over the traditional differential-difference equations or the prevailing form of coupled differential-difference equations with multiple delays. Fundamental solutions, general solutions, and the construction of the Lyapunov-Krasovskii functional are discussed. For systems with a large number of state variables with multiple low-dimensional delay elements, this formulation allows a drastic reduction of computational cost as compared to the traditional differential-difference equation formulation when the discretized Lyapunov-Krasovskii functional method is used.