3,791 research outputs found
A nonlinear distributed parameter process control: An internal linearized model control approach
No full textThe authors acknowledge IEEE for his copyright policies & self-archiving. More open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceThis paper deals with the nonlinear distributed parameter process control. The aim is to realize a predictive type control that minimize an optimization criterion under some constraints. The well-known internal model control (IMC) structure is used to make the predictive control strategy where the internal model is a time-varying linearized model around a tracking trajectory. This nonlinear distributed parameter system control is developped and presented through a practical distributed control application : an infrared drying process control
Commande par actions frontières d'un système d'échangeurs de chaleur
No full textMore open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceThis paper deals with the boundary control of distributed parameter systems. We give, for non-academical example, an explicit form of stability and feasability conditions to an output feedback boundary control, and we generalize the internal model control (IMC) structure to infinite dimensional system. The framework is directly presented via a MIMO heat exchanger pilot process example. Some simulations results of asymptotic traking with a variable set point are given
Control engineering in drying technology: Review and trends
No full textThe author acknowledges the Drying Technology journal for his copyright policies & self-archiving. More open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceThis paper aims at promoting cooperation between drying and control communities in the future. Indeed, with a review of 71 relevant publications all dealing with control aspects in drying, this paper shows that the use of control tools really started to emerge in drying applications only since 1979. In a second phase started around 1998, new trends based on more advanced concepts have also appeared in drying control. This paper clearly shows that control in drying is more and more a reality and that many opportunities exist to enhance industrial performance via efficient control of the operation
Predictive control of a nonlinear distributed parameter system: Real time control of a painting film drying process
No full textMore open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceThis paper deals with the model predictive control of processes. The new step is the use of a distributed parameter system instead of a lumped parameter system. The internal model control structure is also used to solve the trajectory tracking problem. The internal model is obtained from the linearization of the initial set of nonlinear partial differential equations about the desired trajectory. Finally, the control problem stated as a constrained optimization problem is solved by a control algorithm. Experimental results presented here show the efficiency of this control strategy
Xavier Léon-Dufour, Résurrection de Jésus et message pascal , 1971
No full textGiblet Jean. Xavier Léon-Dufour, Résurrection de Jésus et message pascal , 1971. In: Revue théologique de Louvain, 3ᵉ année, fasc. 3, 1972. pp. 349-352
X. Léon-Dufour. Résurrection du Christ et message pascal
No full textMénard Jacques E. X. Léon-Dufour. Résurrection du Christ et message pascal. In: Revue de l'histoire des religions, tome 184, n°1, 1973. pp. 85-87
Control engineering in drying technology from 1979 to 2005: Review and trends
No full textMore open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceBased on a review of 71 relevant publications all dealing with control aspects in drying, this paper aims to promote more works in common between drying and control communities. First, it is shown that the use of control tools really started to emerge in drying applications only since 1979. In a second phase started around 1998, new trends based on more advanced concepts have also appeared in drying control. It is underlined how control in drying is more and more a reality and that many opportunities exist to enhance industrial drying performance via efficient control of the operation
Control engineering in drying technology from 1979 to 2005: Review and trends
No full textMore open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceBased on a review of 71 relevant publications all dealing with control aspects in drying, this paper aims to promote more works in common between drying and control communities. First, it is shown that the use of control tools really started to emerge in drying applications only since 1979. In a second phase started around 1998, new trends based on more advanced concepts have also appeared in drying control. It is underlined how control in drying is more and more a reality and that many opportunities exist to enhance industrial drying performance via efficient control of the operation
Observer based model predictive control of the water based painting drying using a humidity profile soft sensor and a temperature measurement
No full textMore open archives publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audienceThis paper deals with the model predictive control of an infrared drying process of a water based epoxy-amine painting. During the drying cycle, the control problem is to optimize the use of the process under constraints. This approach is based on a nonlinear dynamic unidirectional diffusional model of the infrared drying phenomena where both heat and mass transfers under shrinkage conditions are accounted for. To validate our approach, simulation results presented here deal with the minimization of the processing time while accounting for a constraint specified on a difference of humidity inside the sample
Commande prédictive non linéaire sous contraintes : une condition de faisabilité
No full textMore open archive publications of Pascal Dufour are available on: http://hal.archives-ouvertes.fr/DUFOUR-PASCAL-C-3926-2008International audiencePièce maitresse dans l'approche de commande prédictive non linéaire sous contraintes, l'algorithme d'optimisation doit déterminer une commande satisfaisant les contraintes et ceci le plus rapidement possible en vue d'une application en temps réel. On montre ici le lien explicite entre la faisabilité de la commande prédictive et la convergence de l'algorithme d'optimisation. Une condition suffisante est proposée pour garantir la convergence de l'algorithme d'optimisation et de ce fait la faisabilité de la commande prédictive non linéaire sous contraintes. Une application en temps réel illustre cette approche
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