IEEE Transactions on Automatic Control, Vol.42, No.12, 1681-1692, 1997
Robustness of Zero Shifting via Generalized Sampled-Data Hold Functions
In this paper we study robustness and sensitivity properties of a sampled-data feedback system with a generalized sampled-data hold function (GSHF), We argue that shifting nonminimum phase zeros using GSHF control can lead to difficulties unless the zero is outside the closed-loop bandwidth.