Robustness with integrators
Halpern ME., Evans RJ.
Two important practical criteria for most real control systems are that the controller has an integrator and that the closed-loop system has robust stability. In this paper we identify and characterize a grouping or classification of linear scalar discrete-time plants comprising three classes according to the best possible stability robustness margins against coprime factor uncertainty that can be obtained with integral controllers. © 2001 Elsevier Science B.V. All rights reserved.