Parameter optimization of orthonormal basis functions for efficient rational approximations

International audienceIn this paper, the authors present an efficient procedure for optimal placement of poles in rational approximations by Müntz-Laguerre functions. The technique is formulated as the minimization of a quadratic criterion and the linear equations involved are efficiently expressed using the orthonormal basis functions. The presented technique has direct application in rational approximation and model order reduction of large-degree or infinite-dimensional systems. An efficient choice of parameters in orthogonal Müntz-Laguerre approximation Model order reduction of large-degree or infinite-dimensional systems The choice of Müntz-Laguerre parameters is based on a least squares optimization Abstract: In this paper, the authors present an efficient procedure for optimal placement of poles in rational approximations by Müntz-Laguerre functions. The technique is formulated as the minimization of a quadratic criterion and the linear equations involved are efficiently expressed using the orthonormal basis functions. The presented technique has direct application in rational approximation and model order reduction of large-degree or infinite-dimensional systems

A simple algorithm for stable order reduction of z-domain Laguerre models

International audienceDiscrete-time Laguerre series are a well known and efficient tool in system identification and modeling. This paper presents a simple solution for stable and accurate order reduction of systems described by a Laguerre model

Statically constrained nonlinear models with application to IC buffers

"©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE."International audienceVolterra series are well known approaches to modeling non-linear systems. In recent works a properly weighted combination of Volterra models have been used to successfully mimic the behavior of the output port of an integrated circuit buffer. The current paper focuses on a novel mechanism for controlling the static characteristic of such models. A commercial driver example is used to illustrate the efficiency of the technique to guarantee accurate static levels during time-domain simulations

On the Use of Equality Constraints in the Identification of Volterra-Laguerre Models

"©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE."International audienceThis letter focuses on the a posteriori correction of Volterra-Laguerre models in order to meet specific static or dynamic requirements. The authors set a general theoretical framework and provide an illustrative example

ELSID : un outil logiciel pour la modélisation et la caractérisation des réseaux d'interconnexion des circuits VLSI

International audienceCet article présente un logiciel développé sous Matlab® permettant d'identifier les systèmes électriques linéaires, dont les réseaux d'interconnexion des circuits digitaux, et d'en proposer des modèles d'ordre faible mais d'une grande précision pour des temps de simulation réduits

Éduquer en montrant l'exemple: les filles qui… (descriptif de poster)

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Eduquer en montrant l'exemple : les filles qui ...

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