Crit Res De Flexibilit Dans Les Syst Mes De Production
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Crit Res De Flexibilit Dans Les Syst Mes De Production
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Author : Javier Pereira
language : fr
Publisher:
Release Date : 1996
Crit Res De Flexibilit Dans Les Syst Mes De Production written by Javier Pereira and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Flexibilit Dans Les Syst Mes De Production
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Author : Javier Pereira
language : fr
Publisher:
Release Date : 1997
Flexibilit Dans Les Syst Mes De Production written by Javier Pereira and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
La Flexibilit Des Syst Mes De Production
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Author : Jean-Marie Proth
language : fr
Publisher:
Release Date : 1982
La Flexibilit Des Syst Mes De Production written by Jean-Marie Proth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Flexible manufacturing systems categories.
Design Of Flexible Production Systems
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Author : Tullio Tolio
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-12-11
Design Of Flexible Production Systems written by Tullio Tolio and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-12-11 with Technology & Engineering categories.
In the last decade, the production of mechanical components to be assembled in final products produced in high volumes (e.g. cars, mopeds, industrial vehicles, etc.) has undergone deep changes due to the overall modifications in the way companies compete. Companies must consider competitive factors such as short lead times, tight product tolerances, frequent market changes and cost reduction. Anyway, companies often have to define production objectives as trade-offs among these critical factors since it can be difficult to improve all of them. Even if system flexibility is often considered a fundamental requirement for firms, it is not always a desirable characteristic of a system because it requires relevant investment cost which can jeopardize the profitability of the firm. Dedicated systems are not able to adapt to changes of the product characteristics while flexible systems offer more flexibility than what is needed, thus increasing investment and operative costs. Production contexts characterized by mid to high demand volume of well identified families of products in continuous evolution do not require the highest level of flexibility; therefore, manufacturing system flexibility must be rationalized and it is necessary to find out the best trade-off between productivity and flexibility by designing manufacturing systems endowed with the right level of flexibility required by the production problem. This new class of production systems can be named Focused Flexibility Manufacturing Systems-FFMSs. The flexibility degree in FFMSs is related to their ability to cope with volume, mix and technological changes, and it must take into account both present and future changes. The required level of system flexibility impacts on the architecture of the system and the explicit design of flexibility often leads to hybrid systems, i.e. automated integrated systems in which parts can be processed by both general purpose and dedicated machines. This is a key issue of FFMSs and results from the matching of flexibility and productivity that respectively characterize FMSs and Dedicated Manufacturing Systems (DMSs). The market share of the EU in the machine tool sector is 44%; the introduction of focused flexibility would be particularly important for machine tool builders whose competitive advantage is based on the ability of customizing their systems on the basis of needs of their customers. In fact, even if current production contexts frequently present situations which would fit well with the FFMS approach, tradition and know-how of machine tool builders play a crucial role. Firms often agree with the focused flexibility vision, nevertheless they decide not to pay the risk and efforts related to the design of this new system architecture. This is due also to the lack of well-structured design approaches which can help machine tool builders to configure innovative systems. Therefore, the FFMS topic is studied through the book chapters following a shared mission: "To define methodologies and tools to design production systems with a minimum level of flexibility needed to face, during their lifecycle, the product and process evolution both in the technological and demand aspects. The goal is to find out the optimal trade-off between flexibility and productivity". The book framework follows the architecture which has been developed to address the FFMS Design problem. This architecture is both broad and detailed, since it pays attention to all the relevant levels in a firm hierarchy which are involved in the system design. Moreover, the architecture is innovative because it models both the point of view of the machine tool builder and the point of view of the system user. The architecture starts analyzing Manufacturing Strategy issues and generating the possible demand scenario to be faced. Technological aspects play a key role while solving process plan problems for the products in the part family. Strategic and technological data becomes input when a machine tool builder performs system configuration. The resulting system configurations are possible solutions that a system user considers when planning its system capacity. All the steps of the architecture are deeply studied, developing methods and tools to address each subproblem. Particular attention is paid to the methodologies adopted to face the different subproblems: mathematical programming, stochastic programming, simulation techniques and inverse kinematics have been used. The whole architecture provides a general approach to implement the right degree of flexibility and it allows to study how different aspects and decisions taken in a firm impact on each other. The work presented in the book is innovative because it gives links among different research fields, such as Manufacturing Strategy, Process Plan, System Design, Capacity Planning and Performance Evaluation; moreover, it helps to formalize and rationalize a critical area such as manufacturing system flexibility. The addressed problem is relevant at an academic level but, also, at an industrial level. A great deal of industrial sectors need to address the problem of designing systems with the right degree of flexibility; for instance, automotive, white goods, electrical and electronic goods industries, etc. Attention to industrial issues is confirmed by empirical studies and real case analyses which are presented within the book chapters.
Automatisation Du Processus De Production Et Systemes De Gestion
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Author : Pascal Pecquet
language : fr
Publisher:
Release Date : 1986
Automatisation Du Processus De Production Et Systemes De Gestion written by Pascal Pecquet and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
L'AUTOMATISATION INTERPELLE LES SYSTEMES DE GESTION DE L'ENTREPRISE MANUFACTURIERE DES QU'IL S'AGIT DE FAIRE PREUVE DE FLEXIBILITE DE PRODUCTION. LE GESTIONNAIRE DOIT ALORS FINALISER LES OBJECTIFS DE PRODUCTION, ORGANISER LE PASSAGE VERS LE SYSTEME DE PRODUCTION AUTOMATISE FLEXIBLE (S.P.A.F.) ET ANIMER LES PROJETS QUI RELEVENT DE LA PRODUCTIQUE. DANS CE CONTEXTE, LA FLEXIBILITE DE PRODUCTION ENTRETIENT DE NOUVELLES RELATIONS AVEC LES OBJECTIFS DE PRODUCTION : LE COMPROMIS AVEC LA PRODUCTIVITE GLOBALE ET LA PREDOMINANCE AVEC LES OBJECTIFS TELS QUE LE "ZERO" STOCK, LE "ZERO" PANNE... AFIN DE METTRE EN EVIDENCE CE RESULTAT, LE CONCEPT EST ANALYSE AU TRAVERS DE SES COMPOSANTES (FLEXIBILITE DE PROCESSUS ET FLEXIBILITE DE CYCLE). IL EN DECOULE QUE LE DEGRE DE FLEXIBILITE SE MESURE PAR LE DELAI DE REACTION DE L'ENTREPRISE ASSOCIANT LE SYSTEME PHYSIQUE ET LES SYSTEMES DE GESTION. EN NOUS LIMITANT A LA PRODUCTION A LA DEMANDE ET A PARTIR D'UN EXEMPLE D'ATELIER FLEXIBLE, NOUS MONTRONS L'IMBRICATION CROISSANTE DU SYSTEME PHYSIQUE ET DU SYSTEME DE GESTION DE LA PRODUCTION. LES FORMES NOUVELLES DE L'AUTOMATISATION DONNENT EN EFFET NAISSANCE A UN SYSTEME DE PRODUCTION QUI NE PEUT SE CONFONDRE AVEC CEUX DEJA REPERTORIES. SES CARACTERISTIQUES NOUVELLES EN FONT UN SYSTEME DE PRODUCTION A PART ENTIERE DONT IL IMPORTE DE PREVOIR L'INSTALLATION. UNE DEMARCHE GLOBALE DE DIAGNOSTIC ET D'EVALUATION DES PROJETS "PRODUCTIQUE" EST ALORS EXPOSEE. ELLE ABOUTIT A PRIVILEGIER LA SIMULATION TECHNICO-ECONOMIQUE DANS LA MESURE OU CETTE TECHNIQUE AUTORISE L'ETUDE, DES LA CONCEPTION, DU FONCTIONNEMENT ALEATOIRE DU SYSTEME. NOUS PRECISONS, L'INTERET DE FORMALISER PUIS DE MODELISER LES REGLES DE GESTION DE L'ATELIER. LE SYSTEME EXPERT DE PRODUCTION FACILITE ALORS LA PRISE DE DECISION DU GESTIONNAIRE ET CONTRIBUE A AMELIORER LA CAPACITE DE COMMANDE DE LA FIRME. DANS LA MESURE OU LA FLEXIBILITE DE PRODUCTION EST MULTIFORME, LA DEMARCHE EST GENERALISABLE A DE NOMBREUSES ENTREPRISES.
Mutation Des Syst Mes De Production Et Flexibilit
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Author : Claude Fiore
language : fr
Publisher:
Release Date : 1987
Mutation Des Syst Mes De Production Et Flexibilit written by Claude Fiore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
LA REGULATION DES SYSTEMES DE PRODUCTION SE HEURTE AUJOURD'HUI A UNE DIFFICULTE VOIRE UNE ABSENCE DE LA PREVISION DE LA DEMANDE. CELA SE TRADUIT PAR : - UNE CROISSANCE DESEQULIBREE DES CAPACITES DE PRODUCTION FACE AUX EVOLUTIONS DE LA DEMANDE. - UN INFLECHISSEMENT DES RATIOS DE PRODUCTIVITE DU FAIT QUE L'ECART SE CREUSE ENTRE LE VOLUME DE PRODUCTION ET LE VOLUME DU CAPITAL PRODUCTIF FIXE. IL FAUT DONC A NOUVEAU ETABLIR UNE COHERENCE DES SYSTEMES DE PRODUCTION PRENANT EN COMPTE LA FLEXIBILITE DE L'ENVIRONNEMENT DES ENTREPRISES. OR LE DEVELOPPEMENT ACTUEL DE LA LOGISTIQUE DANS LES ENTREPRISES SOULIGNE LA PREPONDERANCE DES ORGANISATIONS FONDEES SUR LA MAITRISE DE LA CIRCULATION PHYSIQUE DES MARCHANDISES. IL S'AGIT DE METTRE EN SIMULTANEITE FLUX D'INFORMATIONS ET FLUX PHYSIQUES AFIN D'ANTICIPER SUR LES FUTURS ETATS DE LA DEMANDE. CELA N'INDUIT-IL PAS UNE SEGMENTATION DE LA PRODUCTION, NON PLUS EN SERIES DE FABRICATION, MAIS EN SERIES D'OPERATIONS POUR DIFFERENTS PRODUITS ? CAR LA FLEXIBILITE CONSISTE A FABRIQUER DES PRODUITS DIFFERENTS DANS LE MEME TEMPS, EN D'AUTRES TERMES LA PRODUCTION SIMULTANEE.
La Flexibilite Des Systemes De Production
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Author : Jean-Marie Proth
language : fr
Publisher:
Release Date : 1982
La Flexibilite Des Systemes De Production written by Jean-Marie Proth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Flexible manufacturing systems categories.
Mutation Des Syst Mes De Production Et Flexibilit
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Author :
language : fr
Publisher:
Release Date : 1987
Mutation Des Syst Mes De Production Et Flexibilit written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Conception Et Exploitation Des Syst Mes Flexibles De Production Manufacturi Re
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Author : Imen Chaieb
language : fr
Publisher:
Release Date : 2002
Conception Et Exploitation Des Syst Mes Flexibles De Production Manufacturi Re written by Imen Chaieb and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Deux parties sont développées dans ce mémoire : primo, la conception de systèmes de transport, et plus particulièrement, une étape intermédiaire du processus de conception, qui porte le nom d'agencement intracellulaire des machines, secundo, l'exploitation des SFPM avec prise en compte des tâches de transport. Le but de la première partie est de fournir un agencement de machines qui soit approprié à une production donnée et qui minimise les temps de transport. Nous avons ensuite pris en compte différents types de flexibilité du système de transport et du système de production : flexibilité des gammes opératoires, multiplicité des ressources de transformation, et installation de raccourcis dans les cellules de fabrication. Nous avons fourni, pour chaque type de flexibilité, une méthode de résolution, et développé un algorithme dans le but de résoudre le problème d'agencement pour des systèmes de production et de transports flexibles. La deuxième partie a pour objectif d'élaborer une commande prévisionnelle, déterministe et cyclique des SFPM. D'abord, nous fournissons une approche de résolution hiérarchisée afin de résoudre le problème de planification fine dont une formulation théorique a été fournie par H. Camus. En transformant le problème multicritères en un problème mono-critère, il devient possible de le résoudre. Le critère retenu pendant cette étape consiste en une minimisation du temps total de production. Puis, nous introduisons les durées des opérations de transport lors de la linéarisation des gammes et la formation des regroupements cycliques. Sous la contrainte du respect du temps de cycle déjà optimisé pendant la planification fine de la production, le critère de la minimisation de la borne inférieure d'en-cours est retenu est celui de la minimisation de la borne inférieure d'en-cours. Nous présentons à la fin une heuristique d'ordonnancement des tâches de transport. Le critère étant le nombre d'en-cours dans le système.
Syst Mes Flexibles De Production
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Author : Jean-Marie Proth
language : fr
Publisher: FeniXX
Release Date : 1978-12-31T23:00:00+01:00
Syst Mes Flexibles De Production written by Jean-Marie Proth and has been published by FeniXX this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978-12-31T23:00:00+01:00 with Business & Economics categories.
Regroupe les techniques intervenant au niveau de la conception lors de la mise en oeuvre d'un système de production et souligne les problèmes d'application de ces techniques. « Copyright Electre »