Quantitative measures of robustness for uncertain time-delay dynamical systems

Considers the problem of robust stability for linear systems subject to delayed time-varying and nonlinear perturbations. A new approach is presented whereby a bound on the perturbations is obtained so that the systems remain stable. The authors´ results show that the robust stability criteria presented in this note are less conservative than the ones reported in the literature. An illustrative example is given to demonstrate the validity of the results