Dissertations / Theses on the topic 'Contrôle en génie des procédés'
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Petit, Nicolas. "Systèmes à retards : platitude en génie des procédés et contrôle de certaines équations des ondes." Phd thesis, École Nationale Supérieure des Mines de Paris, 2000. http://pastel.archives-ouvertes.fr/pastel-00000791.
Full textMichaud, Frédéric. "Aide à la conduite d'un atelier chimique complexe : Proposition d'une méthodologie de guide-opérateur et application sur un site industriel, contribution de l'approche système-expert au diagnostic d'incidents." Châtenay-Malabry, Ecole centrale de Paris, 1987. http://www.theses.fr/1987ECAP0073.
Full textRuel, Jean. "Développement de simulateurs de procédés pour la commande automatique et l'optimisation : approche de conception hybride avec Modelica et Matlab/Simulink." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27834/27834.pdf.
Full textDeschênes, Jean-Sébastien. "Commande non-linéaire des bioprocédés à des fins d'optimisation." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24893/24893.pdf.
Full textWikarsa, Saleh. "Génie des produits formules : amélioration des spécifications de l'Ibuprofène, principe actif peu hydrosoluble, par le procédé d'atomisation." Montpellier 1, 2008. http://www.theses.fr/2008MON13505.
Full textLachance, Luc. "Observation de procédés basée sur des sous-modèles : applications au traitement et au transport de la matière." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24632/24632.pdf.
Full textDorval, Luc. "Étude sur le contrôle du procédé d'électroérosion hybride utilisant l'air comme milieu diélectrique." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24687/24687.pdf.
Full textFaure, Vincent. "Contrôle de la formation de motifs conducteurs par jet d'encre : Maîtrise multi-échelle des transferts de matière dans des suspensions nanométriques." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI117/document.
Full textThis thesis focuses on the understanding of the mechanisms involved in the inkjet printing of silver nanoparticles-based inks in order to optimize the manufacturing of thin (width <100 µm) conductive tracks with high and homogeneous performances. Inkjet printing can be divided into several phases: the ejection of picovolumetric droplets, the impact on the substrate, the spreading and the drying. The drying phase is a complex phase prone to particle migration phenomena such as coffee ring effect. This phenomenon, due to the capillary flow which implies a movement from the center to the edges of the drop, drives most of the suspended particles towards the edges of the printed patterns. The aim of this work is to describe precisely and understand the mechanisms which operate and lead to the transfer effects in order to limit or even eliminate them and guarantee the production of performing and homogenous fine conductive lines. To achieve this objective, three paths of investigation were developed: (i) a first axis deals with the study of the different phases of the droplet generation process. Parameters impacting the dried droplet morphology are identified and optimized with a focus on substrate temperature. Four geometrical indexes are designed to characterize quantitatively the dried droplet profile homogeneity. (ii) A second axis specifically studies the drying phase of picovolumetric droplet in order to understand the phenomena occurring during this phase. A modelling of droplet drying is set up in order to understand the forces influencing the matter transport. (iii) Finally, a last axis studies the print of thin conductive lines composed of several printed droplets partially superimposed. Correlations between line morphology, droplet morphology and electrical conductivity are established in order to produce optimized systems
Kanta, Abdoul-Fatah. "Développement d'un système expert basé sur l'intelligence artificielle pour la prédiction et le contrôle du procédé de projection plasma." Besançon, 2007. http://www.theses.fr/2007BESA2013.
Full textAtmospheric plasma spraying (APS) is a process in which the coating properties are indirectly linked to the selection of the operating parameters (power, injection kinematic and environmental parameters). This process is characterized by several parametric drifts and fluctuations at different characteristic times. These drifts and fluctuations originate especially from the electrode wear and intrinsic plasma jet instabilities. The objective of this work is to develop an expert system which could adjust in real time the operating parameters as a function, in a first time, of the measured in-flight particles to manufacture a coating. Due to the large amplitudes of these drifts an fluctuations, the strategy to adopt will depend on the required corrections to apply to the particle characteristics. Artificial intelligence base on artificial neural networks and fuzzy logic controller appeared as pertinent tools to reach this objective. Fuzzy logic permits to define parametric correction rules and the artificial neural networks permits to predict in-flight particle and coating characteristics. Coupling neural protocols to fuzze logic permit to develop an independent controller. This system offers the possibility to adjust the process parameters in order to improve the reproducibility of the process and also, to optimize the coatings development conditions by taking into account the effects of the electrode wear. The system is flexible in order to to permit a full control based on pre-defined rules aiming and maintaining at constant value the in-flight particle characteristics (surface temperature and velocity) by adjusting in real time pwer parameters whatever the fluctuations
AGHANNAN, Nasradine. "Contrôle de réacteurs de polymérisation, Observateur et Invariance." Phd thesis, École Nationale Supérieure des Mines de Paris, 2003. http://tel.archives-ouvertes.fr/tel-00006598.
Full text
Le travail de régulation concernait des réacteurs tubulaires en boucle, fonctionnant en phase liquide. Nous avons à partir des lois de conservation de masse et d'énergie, établis des modèles. Ces derniers étant nonlinéaires, nous avons utilisé des techniques de contrôle (linéarisation par bouclage) et d'observateur
(contraction) nonlinéaires, que nous avons installées sur les unités.
Ce projet nous a amené à réfléchir sur la manière dont on peut tenir compte des symétries d'un système pour élaborer des observateurs. Nous avons considéré le cas de systèmes invariants sous l'action de groupe de transformations: notre contribution réside dans la définition de la notion d'erreur invariante,ingrédient important dans la conception d'observateurs invariants. Nous décrivons ensuite un observateur asymptotique, localement convergent pour une classe de système Lagrangiens, qui a la propriété d'être intrinsèque tout comme le sont les équations d'Euler-Lagrange. Ces deux études remettent ainsi en perspective la notion d'erreur pour les systèmes nonlinéaires, en tenant compte de la géométrie qui structure ces systèmes.
Mili, Aymen. "Vers des méthodes fiables de contrôle des procédés par la maîtrise du risque : Contribution à la fiabilisation des méthodes de process control d'une unité de Recherche et de Production de circuits semi-conducteurs." Phd thesis, Grenoble INPG, 2009. http://tel.archives-ouvertes.fr/tel-00994905.
Full textHochepied, Jean-François. "Précipitation d'hydroxydes et d'oxydes métalliques en solution aqueuse : vers le contrôle morphologique d'objets multi-échelles." Habilitation à diriger des recherches, Université Paris-Diderot - Paris VII, 2009. http://tel.archives-ouvertes.fr/tel-00574750.
Full textLauzon-Gauthier, Julien. "Modélisation multivariée par variables latentes du procédé de fabrication des anodes précuites utilisées pour la production d'aluminium primaire." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28525/28525.pdf.
Full textAluminum is manufactured by an electrolytic process. The reaction consumes carbon anodes. Anode quality has a great influence on the optimal operation of the reduction process. However, their properties are poorly characterized by weekly averages of anode sample laboratory analyses. The goal of this thesis is to improve quality control at the baked anode manufacturing plant by predicting anode properties. A multivariate latent variable regression method called Projection to Latent Structure (PLS) is used to relate the raw material and the manufacturing process data to the baked anode properties collected at the Alcoa Deschambault smelter. Several models are investigated for physical properties and gas reactivity. From 27% to 68% of the physical properties variance and 20% to 49% of the reactivity variations are captured. The models explained a significant amount of variability, considering that industrial data is typically very noisy. The interpretation of the models was found in agreement with process knowledge.
Tiplica, Teodor. "CONTRIBUTIONS A LA MAITRISE STATISTIQUE DES PROCESSUS INDUSTRIELS MULTIVARIES." Phd thesis, Université d'Angers, 2002. http://tel.archives-ouvertes.fr/tel-00739919.
Full textPetipas, Floriane. "Conception et conduite de systèmes d'électrolyse à haute température alimentés par des énergies renouvelables." Phd thesis, École Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00873645.
Full textGibon-Fargeot, Anne-Marie. "Synthèse d'observateurs pour le génie de procédés." Lyon 1, 1995. http://www.theses.fr/1995LYO10309.
Full textFortin, Hugues. "Modélisation du comportement thermo-électro-mécanique de l'anode de carbone utilisée dans la production primaire de l'aluminium." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26702/26702.pdf.
Full textBamerni, Fanar. "Plant-based (Camelina Sativa) biodiesel manufacturing using the technology of Instant Controlled pressure Drop (DIC) : process performance and biofuel quality." Thesis, La Rochelle, 2018. http://www.theses.fr/2018LAROS004/document.
Full textThe objective of this study was to compare the production of biodiesel from Camelina seeds using conventional methods or assisted/intensified by Instant Controlled Pressure-drop DIC. Camelina is one of the most suitable feedstocks for biodiesel production as it does not compete with food crops and/or agricultural land use. Its interest lies in its high oil content, short growing season, and great ability to enrich poor, arid or semi-arid soils. The insertion of texturing by DIC allows the intensification of both 1/ extraction of the oil followed by transesterification and 2/ a single step in-situ transesterification process. In both cases, using the response surface method (RSM), statistical analyzes have led to adequate empirical mathematical models capable of better developing experimental results, optimizing treatment parameters and better define the scaling-up. The DIC process stands out for its ability to successfully achieve the structural expansion of natural products without affecting the quality of sensitive compounds such as oils and fuels produced. The increase in the amount of oil extracted after DIC texturing of seeds was 38% and 22% for pressing and solvent extraction, respectively. In ISTE mode, DIC texturing approximately doubled FAMEs yields (98% increased yields). In addition, DIC technology is a very economical technique due to its high processing capacity, low operating time, and weak energy consumption
Bonjour, Jocelyn. "Contributions du Génie Frigorifique et du Génie des Procédés pour un meilleur environnement." Habilitation à diriger des recherches, Université de Technologie de Compiègne, 2004. http://tel.archives-ouvertes.fr/tel-00012144.
Full textCe document présente tout d'abord quelques initiatives dans le domaine du Génie Frigorifique visant à limiter l'impact environnemental de certaines de ses activités. Il s'agit par exemple d'actions de recherche sur le transfert de chaleur par ébullition, visant à maîtriser les mécanismes régissant ce phénomène et finalement à améliorer les évaporateurs des machines frigorifiques. L'impact de la présence d'huile de lubrification dans les circuits frigorifiques sur les performances des installations est ensuite évoqué, de même que l'effet du choix de fluides zéotropes. Une démarche d'optimisation (minimisation) de la consommation énergétique des compresseurs de machines à ammoniac refroidis par eau est enfin proposée.
Le Génie des Procédés fournit quant à lui des moyens de traitement de polluants de l'air (Composés Organiques Volatils, dioxyde de carbone, ...), entre autres grâce au phénomène d'adsorption, en vue de leur séparation, leur capture, leur concentration et éventuellement leur récupération. On présente ici le développement d'un nouveau procédé TSA (Temperature Swing Adsorption) à chauffage et refroidissement indirects permettant ces opérations.
Ce procédé peut être amélioré en le combinant à d'autres procédés comme la condensation. Les modes d'analyse usuels en Génie Energétique (et notamment ceux du Génie Frigorifique et du Génie Climatique) peuvent constituer une aide pour optimiser une telle chaîne de traitement de l'air. En particulier, on suggère l'utilisation d'un outil original pour l'évaluation de procédés couplés : un diagramme de type psychrométrique pour le couple azote-toluène en présence d'un charbon actif adsorbant.
Asghar, Mohamad Taki. "Nouvelles stratégies de contrôle avancé pour les procédés sidérurgiques." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0077/document.
Full textThe steel industry has been developing for years. The characteristics of the products intended for the various industrial sectors are becoming more and more demanded. Currently advanced PID controllers are used with a local multi-loop structure. In order to deal with the increasingly constrained specifications, it is interesting to review this control strategy. This CIFRE PhD thesis between ArcelorMittal and CRAN aims to propose new advanced control strategies for the cold rolling of thin sheet steel strips, including centralized control strategies replacing local and independent control loops, to broaden the scope of treatable materials, increase and optimize process productivity and capabilities, and minimize production costs. In a first part, a bibliographic study will be carried out in order to better define the various metallurgical and dynamic models of the system to be controlled. In a second part, the specifications will be translated in terms of an optimization problem whose solution is the state feedback controller. Finally, in a third and final part, a dynamic output feedback synthesis will be proposed to solve the problem of missing measurements
Nolhier, Nicolas. "Contrôle des procédés thermiques rapides appliqués à la microélectronique." Toulouse, INSA, 1992. http://www.theses.fr/1992ISAT0002.
Full textDoubenskaia, Maria. "Contrôle des procédés industriels hautes températures par voie optique." Saint-Etienne, 2005. http://www.theses.fr/2005STET4019.
Full textPyrometers developed and manufactured for precise measurements of the brightness temperature under specific conditions of laser action, in combination with the modern methods of reconstitution of the true temperature, are effective instruments for analysing thermal processes in laser applications. Development of a pyrometry system for the real surface temperature measurement, for example, during laser action, involves significant methodological difficulties, which are determined by the process parameters : broad temperature range (300-4000° K), high heating and cooling rates (103-106 Ks-1), small size of the heated zone (0. 8-15 mm), influence of the radiation emitted by the evaporation plume (plasma and matter evaporated at the surface), strong variation of the optical and thermal properties of materials, etc. A set of pyrometers was used to monitor the surface temperature in the processes of laser Nd-YAG welding, pulsed laser action, laser cladding, etc. A good quantitative agreement between the theoretical and experimental results for pulsed laser action is obtained. The above mentioned innovations offered a broad range of application possibilities for multichromatic pyrometry in reconstitution of the true temperature in laser applications. Knowledge of the true temperature represents a great interest from the point of view of the phase transition analysis, for example, melting / solidification ; that is crucial in the case of multi-materials alloys to avoid thermal decomposition of the chemical components
Flila, Saïda. "Identification optimale et commande prédictive : applications en génie des procédés." Phd thesis, Université Claude Bernard - Lyon I, 2010. http://tel.archives-ouvertes.fr/tel-00458661.
Full textTran, Kim Phuc. "Surveillance de procédés de type mélange." Thesis, Nantes, 2016. http://www.theses.fr/2016NANT4047/document.
Full textIn industry, Statistical Process Control (SPC) is a set of statistical techniques to monitor, control and improve a process. Among SPC tools, control charts are very useful tools for the detection and the elimination of assignable causes shifting the process. There exist manufacturing environments where several components have to be mixed together to obtain a product composition. In this case, it is necessary to monitor ratios of quality variables when quality practitioners are interested in the relative comparison of the same property for two components. In this thesis, we have tried to systematically propose new control charts for the ratio and for compositional data that have not yet been proposed so far in the literature. Run rules control charts, EWMA control charts, CUSUM control charts and a Shewhart control chart in the presence of measurement error have been proposed for monitoring the ratio. Furthermore, a MEWMA control chart to monitor compositional data has also been proposed. The performance of each control chart has been evaluated and the optimal parameters have systematically been computed. An empirical validation of the results has been developed for real industrial processes
Cheikh, Mohamed. "Etude de la dépollution de boue industrielles contaminées par des métaux lourds par couplage de procédés." Grenoble INPG, 2008. http://www.theses.fr/2008INPG0070.
Full textThe aim of this study was to investigate an adequate leaching and uptake technique for metal removal from Zn-Pb contaminated industrial carbon slurry (Zn 8600 mg. Kg-l, Pb 389 mg. Kg-I). Coupled processes such as ex1raction with mineraI acids, EDT A addition, ultrasound, and bioleaching are investigated. Pb was totally removed by EDT A treatment (1200 mg. CI, pH 6). Ultrasonic treatment was inetficient in metalleaching at ail tested pH and with or without EDT A addition, due to the smaller size of carbon particles. A ferrous-oxidising endogenous flora lixiviates 90% of Zn at pH2. 5 in 7 days. By addition of an Acidithiobacillus ferrooxidans living biomass, 100 % of Zn is removed in 4 days. Also, zinc uptake potentialities of the purple non-sulphur bacterium Rhodobacter capsulatus strains BIO and RC220 were investigated using Batch biosorption experiments. It was found that biosorption eapacities of BIO and RC220 biomass increase when metal concentration move from 1 to 100 mg. L-1 , and the data can he weil modelled according to the Freundlich adsorption isotherm. However, at Zn concentrations ranging between 100 to 600 mg. Loi, favourable Langmuir isotherms are observed and the two strains show a different trend in uptake potentialities (Q mqx: BlO= 153 and RC220 =6. 053 mg. G-')
Barraud, Julien. "Commande de procédés à paramètres variables." Phd thesis, École Nationale Supérieure des Mines de Paris, 2006. http://pastel.archives-ouvertes.fr/pastel-00002192.
Full textNiang, Ndeye Ngouille. "Méthodes multidimensionnelles pour la maitrise statistique des procédés." Paris 9, 1994. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1994PA090023.
Full textAfsi, Nawel. "Contrôle des procédés représentés par des équations aux dérivées partielles." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSE1033.
Full textThis work aims to control the processes represented by partial differential equations. Two processes were considered. The first process is a batch crystallization process. The aim of the control is to generate a crystal size distribution (CSD) with an appropriate mean size. First, we used a high gain cascade observer to estimate this average size using only the crystallizer temperature and solute concentration. Then, different scenarios were tested to compare the performance of the different structures of the control system without a model. The second process treated is a lactide polymerization process. This reaction is very sensitive to impurities. So, two control strategies were proposed to restore the nominal conditions in case of drift, which are the dynamic optimization and predictive control
Traore, Adama. "Logique floue et contrôle supervisé des procédés biologiques de dépollution." Montpellier 2, 2003. http://www.theses.fr/2003MON20066.
Full textMitsiouk, Anton. "Contribution à l'optimisation des systèmes dynamiques : application au génie des procédés." Phd thesis, Toulouse, INPT, 2007. http://oatao.univ-toulouse.fr/7650/1/mitsiouk.pdf.
Full textPourtalet, Erik. "Validation de procédés de fabrication : essais de développement." Paris 5, 1994. http://www.theses.fr/1994PA05P003.
Full textCoutte, François. "Production sélective de lipopeptides par Bacillus subtilis en bioréacteur à membrane : du génie moléculaire au génie des procédés." Thesis, Lille 1, 2009. http://www.theses.fr/2009LIL10115/document.
Full textBacillus subtilis produces up to three families of lipopeptides through a non-ribosomal mechanism, i.e., iturins, surfactins and fengycins or plipastatins. These molecules show a broad range of biological properties.Their biosynthesis is most often subject to complex regulation. In addition, the surface properties of these molecules make the production of the lipopeptide in an aerated bioreactor difficult because of the foaming, rendering difficult their large-scale production. This work was based on two approaches to optimize the production of the lipopeptide. On the one hand, an innovative process based on the technology of membrane bioreactor was developed for the production of lipopeptide to circumvant the massive foaming problem. For the first time, different bubbleless bioreactors were used for lipopeptide production by B. subtilis using hollow fiber membranes as air-liquid contactor. The performance of this bubbleless bioreactor enabled us to conduct a study of the lipopeptide production in a bubbleless bioreactor coupled with a continuous lipopeptide membrane extraction. On the other hand, a genetic optimization of the production of surfactin was undertaken to release its synthesis from a complex regulation and to obtain a single surfactin producer strain derived from B. subtilis 168, named BBG131. The different mutant strains obtained in this genetic optimisation process allow us to demonstrate some synergistic or antagonistic effect of surfactin and fengycin co-production on biological properties of Bacillus subtilis. Furthermore, the use of BBG131 in the integrated process previously developed led to the production, extraction and purification of several tens of grams of surfactin, pointing out the feasibility of this integrated process at the industrial scale
Monfreda, Fabien. "Étude et résolution d'équations différentielles algébriques avec applications en génie des procédés." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2212/.
Full textThis thesis deals with the study and the resolution of several classes of differential algebraic equations (DAEs), especially involved in the process engineering field. DAEs are general differential systems which include ordinary differential equations. We establish in this work a new resolution method for linear and quasilinear DAEs. The method, called the deflation method, is an iterative symbolic process which transforms DAEs into either constrained differential equations or algebraic equations. The deflation method is provided by a symbolic algorithm. We analyse properties of this algorithm in detail. The first chapter of the thesis describes the most significant resolution methods of DAEs known in the actual literature. These methods are presented and illustrated. In the second chapter, the deflation method is studied. We show the geometric aspect of the deflation method (the method preserves the geometry of the studied systems) through the study of the equations of the n-pendulum. The deflation method is used on constrained multibody systems. We also show how the Kronecker index decreases during the application of the method. In the last chapter, we solve quasilinear DAEs provided by Rayleigh distillation models
Prevost, Paul-Henri. "Étude prospective d'une contribution des réseaux neuronaux multicouches au génie des procédés." Châtenay-Malabry, Ecole centrale de Paris, 1995. http://www.theses.fr/1995ECAP0395.
Full textGuillermin, Matthieu. "Etude du panache d'ablation laser femtoseconde : contrôle et optimisation des procédés." Phd thesis, Université Jean Monnet - Saint-Etienne, 2009. http://tel.archives-ouvertes.fr/tel-00395196.
Full textFall, Ibrahima. "Gestion optimisée de produits-modèles de procédés logiciels." Paris 6, 2012. http://www.theses.fr/2012PA066018.
Full textCurrently, software process artefacts are under-considered by the software process modelling and execution community. They are minimally managed. Moreover, the application of the principles of the model driven engineering on software processes have deeply changed the nature and increased the complexity of software artefacts : they become models (model-products hereafter). Taking into account such a complexity is a necessity with a view to optimize model-products management policies. This thesis has focused on the issue of the specification of the relationships between model-products by analysing the importance of the use of those relationships in model-products evolution management during process execution. We therefore have illustrated that using the respective specifications of relationships during process execution optimizes the management of model-products evolution in term of their consistency, their synchronization, and a flexibility in their granularity. Our solution fits in two major points that respectively relate to process modelling and enactment. According to process modelling, we have proposed a meta-model that captures the concepts to use to specify the model-products and the relationships between them. The meta-model takes also into account the details on these relationships as they are useful for an enhancement of used model-products management policies during the execution of the modelled processes. Our approach currently supports the nest and the overlap relationships. According to the process execution point of view, in order to structure the logical entities through which are managed the model-products of a process, we have proposed another meta-model. Such a meta-model therefore specifies process objects that represent model-products and their relationships during process execution. This meta-model also supports the nest and the overlap relationships, in compliance with the first one. The proposition also comprises transformation rules used to map concepts of the two meta-models and therefore to give the possibility of an automatic use of the modelling concepts through the enactment ones. The contributions of the approach are related to model-products management during process enactment. They essentially consist of a systematic synchronization and relational consistency between model-products, their aided creation, a flexibility in the granularity of their use, and their semantic integrity. We finally have prototyped a process modelling and enactment environment that implements our approach
Huang, Lidan. "Analyse et contrôle de la qualité du logiciel." Lyon, INSA, 1989. http://www.theses.fr/1989ISAL0084.
Full textAstorga, Zaragoza Carlos Manuel. "Techniques avancées d'observation et de commande non-linéaire pour le génie des procédés." Lyon 1, 2001. http://www.theses.fr/2001LYO10190.
Full textPonsich, Antonin. "Stratégies d'optimisation mixte en Génie des Procédés – Application à la conception d'ateliers discontinus." Phd thesis, Toulouse, INPT, 2005. http://oatao.univ-toulouse.fr/7429/1/ponsich.pdf.
Full textLiu, Zhanhao. "Méthodes statistiques et variationnelles de modélisation préalable au contrôle de procédés industriels." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0086.
Full text***Part 1 of the thesis is subject to unlimited confidentiality*** In this thesis, we aim to propose a methodology for analyzing industrial processes based on a large quantity of process data with statistical and variational methods. The objective is to identify the key factors which ensure the good functioning of industrial processes. It is a preliminary step for the automatic generation of process control law from the collected data. In the first part of this thesis, we presented the statistical analysis of a process of Saint-Gobain. At first, we applied some classical statistical tools (Principal component analysis, clustering and so on) to the process data, and linked the obtained information with the functioning of the process. Then, we analyzed a product quality measure (called target) with the collected process parameters. The target is weakly correlated with the parameters, so the hypothesis of linear model is rejected. A restricted list of parameters which contribute to the explaination of the target was identified by the statistical methods and validated by our industrial interlocutors. Afterwards, we tested a non-linear model method: the generalized additive model (GAM). The introduction of the non-linear terms improved the performance of our model, but it remained insufficient for the future applications. Following the intuition of the process engineers and operators, we focused on a noisy signal, tracked regularly in the plants, characterizing the good functioning of the process, and restoring the missing information of this signal may improve the model. In the second part of this thesis, we developed a total variation restoration method with an automatic choice of hyper-parameter. Furthermore, our proposition of hyper-parameter has a similar performance as the existing methods, and our estimation method of both hyper-parameter and restoration is well fitted for the real time processing of a large quantity of data. Based on the proposed method, we have developed some applications of pattern restoration and discontinuities detection for several industrial processes
Morey, Céline. "Optimisation des procédés chromatographiques multicolonnes continus : développement d'un système de contrôle avancé." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL003N.
Full textMulticolumn continuous chromatographic processes became a key separation technology in the areas of pharmaceutical industry thanks to high productivity and short process development times. Today, modeling, design, and optimization of SMB and Varicol, are well established. However a robust and optimized operation of processes is still an open issue. The common practice is to operate processes under suboptimal operating conditions in order to gain the necessary robustness. The operating parameters are tuned manually by experienced operators in order to maintain the product specifications. Therefore, as chromatographic applications spread, process control problem becomes increasingly important. Recently, several control methodologies of SMB process have been proposed. This thesis work introduces a new advanced control system approach. This system adjusts operating parameters thanks to two kinds of measurements : an in-line measurement and an at-line measurement. The performance of this control scheme is demonstrated through several experiments on Varicol. The reported results aim to demonstrate that the controller is able to deliver the products within the specifications, to optimize the process performance and to answer to disturbances while protecting the key product
Kabbaj, Mohammed Issam. "Gestion des déviations dans la mise en œuvre des procédés logiciels." Toulouse 2, 2009. http://www.theses.fr/2009TOU20035.
Full textIn this thesis, we propose an original approach to process enactment evolution, based on formal management of process deviations. Deviations are defined as operations that violate process constraints. Once a deviation is detected, a deviation-tolerance model attached to the preset process is used to decide whether to accept or to reject the deviation. Detecting deviations consists to compare the enactable process model and the observed process of actual development through a monitoring system of user actions. The observed process is captured in observed process model. His behavioral and dynamic aspects are described in terms of the process elements life cycles. The observed model, is described in terms of current states of process elements, and history of operations performed by human actors. Both models are translated into first-order logic representation. Detecting and analysis of deviations are based on a formal approach exploiting this logical representation. The decision rests on a rules-based tolerance model that expresses decision to make with respect to contexts in which deviations occur. The method relevance lies in its ability to offer two managing deviations methods depending on the enactment context : acceptance of deviations after dynamic adaptation of process model for deviations that are considered as major ones, or mere tolerance, without changing process model for deviations considered as minor ones. Thus, treatment differs depending on the context of the desired evolution of process model. We have validated our approach with a case study that illustrates this approach. A prototype of a PSEE exploiting this approach has been developped
Lhuillier, Vincent. "Contrôle actif de la transparence acoustique d'une double paroi." Lyon, INSA, 2009. http://theses.insa-lyon.fr/publication/2009ISAL0118/these.pdf.
Full textThis thesis deals with active control of sound transmission double panel. When structures are relatively small and light, the panels have low modal overlap, so in this case, modal control appears to be adapted. It enables limiting the active surface, the number of the control components and concentrating control energy on high radiation efficiency modes. As a first step, vibroacoustic and modal control are introduced. Modal control requires an accurate model of the structure. Consequently, analytical and numerical model of beams, plates and double panels are presented. Next, simulations are performed to evaluate different modal control approaches. Moreover, optimal dimensions of the structure that minimize modal overlap are aimed for. Experiments were conducted on a symmetric rectangular double panel of duraluminium material (600x400x1mm^3). The double panel was clamped between two soundproofed rooms. The structure was equipped with 2 PZT patches used as actuator and 6 PVDF patches used as sensors. It is controlled via a modal controller in case of mechanical and aerial disturbance. The identification procedure developed in this thesis is used to build an experimental model of the double panel. Then, the controller is implemented. Sound power and sound transmission of the controlled double panel are evaluated with sound intensity measurements. The transmission loss of the double panel is significantly improved. Finally, identification and control techniques developed in this work are validated on a simple panel
Zhang, Ying. "Maîtrise statistique des procédés avec paramètres estimés." Ecole centrale de Nantes, 2011. http://www.theses.fr/2011ECDN0018.
Full textStatistical Process Control (SPC) is an effective approach for improving quality and productivity of aproduction process. Among the SPC tools, control chart, as themost important and primary tool, has been widely used to monitor and determine whether a production process is in-control or not. An indispensable assumption for the development of control charts is that the process parameters (the in-control mean and standard-deviation) are assumed known. In practice, the distribution of the data and the process parameters are rarely known, and the process parameters are usually estimated from an in-control historical data set (Phase I). When these parameters are estimated, the performance of the control charts differs from the known parameters case. Recently, some authors have studied the impact of the parameters estimation, but more work is needed. In this thesis, we will investigate the properties (in terms of theRun Length) of some control charts for the mean inthe case of estimated parameters,which have not been researched till now, such as Run Rules Chart, Synthetic Chart, VSI Chart and VSS Chart. The first goal of this thesis is to evaluate the performance of these control charts when the process parameters are estimated, to compare them with the case when the process parameters are assumed known and to demonstrate that the performance is quite different especially when the number of samples used during the Phase I is small. The second goal of this thesis is to suggest the sample sizes and to provide new optimal chart constants for calculating the limits of these control charts in the case of estimated parameters, which are very useful in practice
Bournez, Carine. "Une architecture multi-agents réflexive pour le contrôle de systèmes de production distribués hétèrogènes." Lyon, INSA, 2001. http://www.theses.fr/2001ISAL0040.
Full textIn order to control new production organizations composed of autonomous entities, we propose an approach that avoids any structure modeling. Indeed, the study of networked enterprises, particularly from an organizational evolution point of view, shows that dynamic structure is one of their essential in trin sic features. The goal of this work is to define a multi-agent architecture, based on a contract net protocol, for distributed dynamic production systems control. Using an emergentist methodology in its conception goes against sorne preconceived ideas about agents identification with physical entities of the organization. Our architecture allows to integrate different parts of the distributed system thanks to the contract net protocol. A reflexive agent architecture supplements this system. The meta controls the behaviors of the agents of the network, and also their ability to learn. Learning relies on several partial behaviors acquisitions, thus on synchronization between agents at the metalevel. The mechanism is a case-based learning engine, with XML case representation. The multi-agent contract net and the reflexive architecture have been implemented in a simulation framework called OCEAN. It is written in Java language, over the MadKit multi-agent platform. It allows to develop simulations from relatively little refined data about production system entities. For this purpose, we propose a simulation methodology using this framework
Swesi, Yousef Salem. "Proposition et évaluation de procédés de séparation hydrogène - hydrocarbures." Lyon 1, 2005. http://www.theses.fr/2005LYO10243.
Full textDaldoul, Insaf. "Caractérisation et étude de la performance du chysotile dans la capture du dioxyde de carbone dans les procédés gaz-solide." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26854/26854.pdf.
Full textLesage, François. "Modélisation, simulation, métrologie et optimisation en génie des procédés -- Quatre piliers pour une science." Habilitation à diriger des recherches, Institut National Polytechnique de Lorraine - INPL, 2010. http://tel.archives-ouvertes.fr/tel-00881534.
Full textOuvrard, Régis. "Contribution à l'identification robuste des systèmes à temps continu - application au génie des procédés." Poitiers, 1997. http://www.theses.fr/1997POIT2335.
Full textBusson, Frédéric. "Les bond graphs multiénergies pour la modélisation et la surveillance en génie des procédés." Lille 1, 2002. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2002/50376-2002-253.pdf.
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