Title :
Discrete-time adaptive control of continuous systems with internal and external point delays
Author :
De la Sen, Manuel ; Pena, A.
Author_Institution :
Dept. of Electr. & Electron., Univ. of Basque Country, Bilbao, Spain
Abstract :
This paper deals with the discrete-time pole and zero placement control of continuous systems with internal and external point delays when the discretization is performed through a zero order hold. This strategy of control is based on the possibility to represent the continuous system with delays as a QARMA (quasiregressive moving average) model. An approximate method based on Leverrier´s algorithm for obtaining the parameters of a discrete plant model is presented. The parameters are calculated from output values at sampling points of the step response of the system. In the adaptive case, the parameters are obtained online by using the recursive least squares algorithm
Keywords :
adaptive control; autoregressive moving average processes; continuous time systems; control system synthesis; delay systems; discrete time systems; pole assignment; state-space methods; step response; zero assignment; Leverrier algorithm; QARMA model; adaptive control; continuous systems; discrete-time systems; external point delays; internal point delays; pole placement; quasiregressive moving average model; recursive least squares algorithm; state space; step response; zero order hold; zero placement; Adaptive control; Adaptive systems; Continuous time systems; Control systems; Delay systems; Filters; Least squares approximation; Poles and zeros; Programmable control; Sampling methods;
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3832-4
DOI :
10.1109/ACC.1997.611812
