Improved stability robustness bounds for digital control systems in state-space models

Abstract

CorrespondenceImproved stability robustness bounds for digital control systems in state-space models SRI R. KOLLAt This paper presents stability robustness bounds for linear discrete-time systems with time-invariant perturbations. These bounds extend the previous investigations for independent perturbations to dependent perturbations and provide improved results. I t is shown that the dependent perturbation bound includes an independent perturbation bound previously reported as a special case. These results are illustrated with simple examples.