Title :
Digital controller improvement by multirate control
Author :
Salt, J. ; Albertos, P. ; Tornero, Josep ; Ledesma, B.
Author_Institution :
Dept. Ing. de Sistemas Comp. y Automatica, Univ. Politecnica de Valencia, Spain
Abstract :
Digital control of continuous time processes is usually designed on the basis of a constant sampling rate. The use of multirate strategies can improve the time or frequency specifications of the process output, modifying the overshoot, the settling time, hidden oscillations, or the phase and magnitude margins. A new methodology based in classical techniques is presented in order to provide a closed loop model suitable to compare different structures and their associated performances. Finally, the control of a DC motor confirms the results obtained
Keywords :
DC motors; closed loop systems; continuous time systems; digital control; machine control; root loci; DC motor control; closed loop model; continuous time processes; digital control; dual rate system; multirate control; root locus; sampling rate; Continuous time systems; DC motors; Digital control; Feedback systems; Poles and zeros;
Conference_Titel :
Control Applications, 1994., Proceedings of the Third IEEE Conference on
Conference_Location :
Glasgow
Print_ISBN :
0-7803-1872-2
DOI :
10.1109/CCA.1994.381302
