Tolerable delay-margin improvement for systems with input-output delays using dynamic delayed feedback controllers

This paper presents investigations on a dynamic state feedback controller with state delays that improves tolerable delay margin for systems with input-output delays. Using an iterative pole placement technique for time-delay systems, the effect of introducing state delay in the controller dynamics is studied. It is observed that such a controller improves the tolerable delay margins compared to its static or even simple dynamic counterpart.