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Some algorithmic aspects of subspace identification with inputs

by Alessandro Chiuso, Giorgio Picci - International Journal of Applied Mathematics and Computer Science , 2001
"... It has been experimentally verified that most commonly used subspace methods for identification of linear state-space systems with exogenous inputs may, in certain experimental conditions, run into ill-conditioning and lead to ambiguous results. An analysis of the critical situations has lead us to ..."
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It has been experimentally verified that most commonly used subspace methods for identification of linear state-space systems with exogenous inputs may, in certain experimental conditions, run into ill-conditioning and lead to ambiguous results. An analysis of the critical situations has lead us to propose a new algorithmic structure which could be used either to test difficult cases and/or to implement a suitable combination of new and old algorithms presented in the literature to help fixing the problem.
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Composition du Jury

by Mario Alberto Rios, Ingénieur Electricien, Spécialité Génie Electrique, Monsieur S. Salon, Messieurs A. Gauthier Examinateur, R. Feuillet, Examinateur Co-directeur, A. Torres, Examinateur Co-directeur , 2013
"... d'Energie du Laboratoire d'Electrotechnique de Grenoble (LEG) de l'Institut National Polytechnique de Grenoble (INPG) et au Département de Génie Electrique de l'Universidad de Los Andes de Bogotâ. Je remercie: MM Jean-Claude Sabonnadière et Jean-Pierre Rognon pour m'avoir ac ..."
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d'Energie du Laboratoire d'Electrotechnique de Grenoble (LEG) de l'Institut National Polytechnique de Grenoble (INPG) et au Département de Génie Electrique de l'Universidad de Los Andes de Bogotâ. Je remercie: MM Jean-Claude Sabonnadière et Jean-Pierre Rognon pour m'avoir accueilli au Laboratoire d'Electrotechnique de Grenoble (LEG). tel-00823358, version 1- 16 May 2013 M. René Feuillet, directeur adjoint et professeur à l'ENSIEG et responsable de l'équipe Réseaux du LEG, pour m'avoir accueilli dans son équipe et pour avoir été l'un des mes directeurs de thèse. M. Alvaro Torres, professeur à l'Universidad de Los Andes, pour m'avoir proposé l'idée de faire cette thèse en cotutelle et pour avoir été l'un de mes directeurs. M. Sheppard Salon, professeur à l'Electric Power Engineering Department au Rensselaer Polytechnic Institute (RPI), pour avoir présidé mon jury et accepté d'être l'un de mes rapporteurs.
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Language

by Brad Schofield, Rolf Johansson At Lth, Brad Schofield, Brad Schofield , 2003
"... Sponsoring organization Title and subtitle Subspace Based Identification for Adaptive Control (Identifiering med underrumsmetoder för adaptive reglering) This thesis describes the results of an investigation into the use of Subspace-based System Identification techniques in the field of Adaptive Con ..."
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Sponsoring organization Title and subtitle Subspace Based Identification for Adaptive Control (Identifiering med underrumsmetoder för adaptive reglering) This thesis describes the results of an investigation into the use of Subspace-based System Identification techniques in the field of Adaptive Control. The project aims included adaption of subspace algorithms for online use, proposal of new algorithms of adaptive control based on these algorithms, and analysis of properties of the proposed systems. The thesis includes reviews of various subspace algorithms used in the investigation, as well as a brief review of cur-rent adaptive control algorithms. A direct adaptive control algorithm based on a combination of subspace methods and model predictive control techniques, as well as an indirect algorithm combining an implemented online subspace identification algorithm and a model predictive controller, are presented.