Title :
Robust control of a class of sampled-data systems against LTI uncertainties
Author :
Toivonen, H.T. ; Sågfors, M.F.
Author_Institution :
Fac. of Chem. Eng., Abo Akademi Univ., Turku, Finland
Abstract :
The robust stability in sampled-data control is studied for LTI uncertainties. A class of problems, which allows an exact characterization of the robust sampled-data problem in terms of a discrete H∞ problem is considered. In the problems studied certain restrictions on the product of the uncertainty weight and the antialiasing prefilter are imposed. In return, a significant simplification of the solution is achieved, in which robust stability to LTI perturbations can be formulated as a discrete H∞ problem
Keywords :
H∞ control; filtering theory; robust control; sampled data systems; uncertain systems; LTI perturbations; LTI uncertainties; antialiasing prefilter; discrete H∞ problem; robust control; robust stability; sampled-data systems; uncertainty weight; Control systems; Filters; Robust control; Robust stability; Robustness; Sampling methods; Sufficient conditions; Time varying systems; Transfer functions; Uncertainty;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.703272
