An adaptive Smith-controller for time-delay systems with relative degree n*≤2

  title={An adaptive Smith-controller for time-delay systems with relative degree n*≤2},
  author={Silviu-Iulian Niculescu and Anuradha M. Annaswamy},
  journal={Systems & Control Letters},
This paper addresses the control of time-delay systems whose relative degree does not exceed two. An adaptive Smith controller together with an adaptive law similar to the delay-free case is proposed. By using Lyapunov-Krasovskii functionals for an appropriate model transformation of the original system, semiglobal stability of the closed-loop system and asymptotic convergence of the output error is established. Strict positive realness together with the low relative degree of the plant is… CONTINUE READING
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