Title :
Robustness of zero shifting via generalized sampled-data hold functions
Author :
Freudenberg, James S. ; Middleton, Richard H. ; Braslavsky, Julio H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
12/1/1997 12:00:00 AM
Abstract :
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 non-minimum phase zeros using GSHF control can lead to difficulties unless the zero is outside the closed-loop bandwidth
Keywords :
closed loop systems; feedback; poles and zeros; sampled data systems; sensitivity analysis; stability; closed-loop systems; feedback system; nonminimum phase zeros; robustness; sampled data systems; sampled-data hold functions; sensitivity analysis; zero shifting; Analytical models; Bandwidth; Control systems; Digital control; Feedback; Poles and zeros; Robust control; Robustness; Sensitivity analysis; Time varying systems;
Journal_Title :
Automatic Control, IEEE Transactions on
