Browsing by Author "Niculescu, S.-I."

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    • Comparing PI controllers for delay models of TCP/AQM networks 

      Ünal H.U.; Melchor-Aguilar, D.; Üstebay, D.; Niculescu, S.-I.; Özbay, Hitay (Elsevier, 2010)
      In this paper, ns-2 simulations and related comparisons of four different PI controllers designed for TCP/AQM networks will be presented. The simulations are performed for various scenarios. © 2010 IFAC.

    • Stability analysis of switched systems using Lyapunov-Krasovskii functionals 

      Çalişkan, S.Y.; Özbay, Hitay; Niculescu, S.-I. (Elsevier, 2011)
      Piecewise Lyapunov-Razumikhin functions are previously used for obtaining a lower bound for the dwell time of the switched time delay systems under the assumption that each candidate system is delay dependently stable. In ...

    • Stability windows and unstable root-loci for linear fractional time-delay systems 

      Fioravanti, A.R.; Bonnet, C.; Özbay, Hitay; Niculescu, S.-I. (Elsevier, 2011)
      The main point of this paper is on the formulation of a numerical algorithm to find the location of all unstable poles, and therefore the characterization of the stability as a function of the delay, for a class of linear ...