Title :
A decentralized control strategy for a large-scale system including uncertainties in the dynamic model
Author :
Sigut, M. ; Acosta, L. ; Torres, S. ; Rodrigo, J.J. ; Hamilton, A.
Author_Institution :
Dept. of Phys., Electron. & Syst., Univ. de La Laguna, Tenerife, Spain
Abstract :
We present the open and closed-loop results obtained with a set of proportional and integral SISO controllers designed for a multivariable large-scale system once its dynamics has been decoupled. This plant corresponds to the model of the Gran Telescopio Canarias´s primary mirror. By means of a decoupling procedure consisting of a change of basis and based on the system eigenvalues multiplicity, the MIMO plant, whose inputs and outputs are strongly interconnected among them, is converted into a set of SISO independent subsystems. We also show how robust the closed-loop decoupled system is when including in the model uncertainties in the dynamics.
Keywords :
MIMO systems; astronomical telescopes; closed loop systems; decentralised control; large-scale systems; proportional control; uncertain systems; Gran Telescopio Canarias; MIMO plant; closed-loop system; decentralized control strategy; decoupling procedure; dynamic model uncertainties; integral SISO controllers; large-scale system; open-loop system; primary mirror; proportional control; Control systems; Distributed control; Eigenvalues and eigenfunctions; Large-scale systems; MIMO; Mirrors; Pi control; Proportional control; Robustness; Uncertainty;
Conference_Titel :
Decision and Control, 2002, Proceedings of the 41st IEEE Conference on
Print_ISBN :
0-7803-7516-5
DOI :
10.1109/CDC.2002.1184554
