Results
author = "Wertz, Vincent"
Improvement of the LMI change of variables for multi-objective control design problems
Description :
The aim of this paper is to propose an improvement of a classical change of variables useful to solve multi-objective control design problems that can be formulated with LMIs. For multi-objective problems, the only approach guaranteed to converge to global optima is to use an iterative approach wher...
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
Application of Clarke-gawthrop Type Controllers for the Bottom Temperature of a Glass Furnace
Description :
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
Uniquely Identifiable State-space and Arma Parametrizations for Multivariable Linear-systems
Description :
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
Direct search methods for an open problem of optimization in systems and control
Description :
The motivation of this work is to illustrate the efficiency of some often
overlooked alternatives to deal with optimization problems in systems and
control. In particular, we will consider a problem for which an iterative
linear matrix inequality algorithm (ILMI) has been proposed recently. As it
...
Repository :
arXiv
Language(s) :
Undetermined
Alternatives with stronger convergence than coordinate-descent iterative LMI algorithms
Description :
In this note we aim at putting more emphasis on the fact that trying to solve
non-convex optimization problems with coordinate-descent iterative linear
matrix inequality algorithms leads to suboptimal solutions, and put forward
other optimization methods better equipped to deal with such problems ...
Repository :
arXiv
Language(s) :
Undetermined
The concentration of fractional distances
Description :
Nearest neighbor search and many other numerical data analysis tools most often rely on the use of the euclidean distance. When data are high dimensional, however, the euclidean distances seem to concentrate; all distances between pairs of data elements seem to be very similar. Therefore, the releva...
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
On reachable sets for a class of nonlinear systems with constraints
Description :
The determination of the reachable set for a class of nonlinear systems with control and state trajectory constraints is investigated. The main result links this problem with the determination of the set of admissible controls, for which procedures already exist. The paper also gives a procedure to ...
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
Use of temperature front parameters to compute the drying front
Description :
Small bins were used to conduct cooling and drying experiments on wheat, barley and peas. Four conceptual models are described. They consider different ways in which water may leave the grain. A new equation has been developed to take the hysteresis phenomenon into account. The temperature front occ...
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
Genetic algorithms for the elimination of redundancy and/or rule contribution assessment in fuzzy models
Description :
Takagi-Sugeno fuzzy models may contain redundant rules. The use of genetic algorithms for optimizing a performance index, which combines a modelling error and the number of rules in the model, allows the elimination of redundant rules and a subsequent adjustment of the weights of the rules retained ...
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English
Nonlinear data projection on non-Euclidean manifolds with controlled trade-off between trustworthiness and continuity
Description :
This paper presents a framework for nonlinear dimensionality reduction methods aimed at projecting data on a non-Euclidean manifold, when their structure is too complex to be embedded in an Euclidean space. The methodology proposes an optimization procedure on manifolds to minimize a pairwise distan...
Repository :
DIAL - Dépôt Institutionnel de l'Académie Louvain
Language(s) :
English