Esfahani, S. H.Moheimani, S. O.R.Petersen, I. R.2026-06-272026-06-279783952426906ORCID:/0000-0003-4856-9450/work/218729852https://hdl.handle.net/1885/733812154This paper presents results on the design of robust memoryless state feedback controller for uncertain time-delay systems with norm bounded uncertainty. It is proved that quadratic stabilization of uncertain time-delay systems is necessary and sufficient for the feasibility of an LMI problem. The robust state feedback controller can be constructed using the corresponding feasible solution of the LMI problem. A procedure is given to select a suitable state feedback controller that is also sub-optimal in the sense of minimizing a bound on an integral quadratic performance index.6enGuaranteed cost controlLinear matrix inequalitiesNorm bounded uncertaintyQuadratic stabilizationUncertain time-delay systems1997-04-0810.23919/ecc.1997.708268484949097589