Robustness of time-delay systems: a survey

Summary form only given. A survey was made of recent results on robustness of time-delay systems in the parameter-space framework. Robust stability, robust stabilization, and bounds on H-infinity norm were the main topics considered. It has been demonstrated on a counterexample that Kharitonov's theorem on the stability of interval polynomials is not extendable to polynomials in s and exp (-hs).<
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