The Control Centre: a Basic Concept for Modelling and Simulation of Industrial Control

International audienceIn the first part of this paper, a review of the main potentials, of some applications and the major limits of simulation are presented. In order to find solution of some limits, we propose in the second part the introduction of the control process into simulation, thanks to the concept of Control Centre (CC). The CC is then described by giving its definition, its components and their organisation in a simplified manner, as well as a typology of the information defining the relations between CCs and the controlled system. These relations correspond to the warning messages circulating between CCs, the base of cooperation and coordination relations of the proposed model. Finally, a formalisation of the internal behaviour of the CC is proposed in a detailed way, for its integration in a PPS (Product Processing System)/CC network

The implementation and deployment of an ERP system : An industrial case study.

International audienceThis article concerns the integration and deployment of the ERP project at Alcatel, a telecommunications company. After a short presentation of the main activities managed by the ERP system, we propose a five-stage deployment model (selection of the vendor and software, deployment and integration, stabilisation, progression, evolution), then we outline the main results obtained at Alcatel in a general way, and we describe the risks, the dysfunctions, and the reasons for them. The sources and conditions for the successful deployment of ERP are also presented. We focus more precisely on the integration and deployment of the planning process in an ERP system. Therefore, we will detail the different stages of the integration step (general design, detailed design, prototyping and validation, testing and implementing of the solution, operation starting). A detailed model of the planning process is built and used as a tool to help the firm's key users at the different stages of the planning process. In order to improve the control process of the planning system, we develop a control helping system based on performance indicators, and particularly dedicated to control the MRP activity. The goal of this project is to improve the reactivity of the planning system as well as to enhance that of the supply chain

Formalisation du centre de pilotage pour la simulation des systèmes industriels

International audiencel'objectif de cet article concerne le développement et la formalisation de nouveaux concepts de pilotage de systèmes industriels en vue de les introduire dans une approche plus globale de modélisation pour la simulation des systèmes de production. Dans la première partie de l'article, nous rappelons les potentiels de la simulation dans le domaine des systèmes industriels à travers des applications réalisées ou qui pourraient l'être et ainsi nous dégageons les limites actuelles de la simulation, pour cerner la problématique de notre recherche. Ainsi pour répondre à certaines de ses lacunes, nous proposons dans une deuxième partie, d'introduire le processus de pilotage dans la simulation, grâce au concept de Centre de Pilotage (CP). Nous en donnons une définition et précisons l'organisation de ses composantes ainsi qu'une formalisation du CP lui même, par la spécification détaillée de son comportement interne. Enfin, avant de conclure, nous proposons une typologie des messages d'avertissement circulant entre les CPs et formant la base des relations de coopération et de coordination de notre modèle

Some concepts for industrial control process modelling

International audienceAfter an introduction concerning today Firm evolution and the state of the art of industrial control and making decision, this paper first presents a classification of decision depending on production span, reactivity, application field and number of actors. Then, it introduces the methods (a priori, reactive, a posteriori) and the dimensions (hierarchy, space, time) of control. And last, it proposes some concepts for generic modelling of its process using " control centre " , " local " and " global " structures

A model for manufacturing systems simulation with a control dimension

International audienceThe objective of this article is related to the potential improvement of computer simulation as applied to manufacturing systems. Through our contacts with the operational environment, we have observed that simulation is not used to its full potential. One remark is that existing tools are not adapted to modelling the decision process: they fall short of offering effective integration into the control process of production. Control is usually limited to scheduling and does not lend itself to practical application. In order to enhance the capabilities of computer simulation and make it more responsive to today's industrial needs, we present a way of introducing such control into simulation by pursuing generic and applicable concepts. The core concepts that constitute the framework of our research are a global structure supporting the co-ordination and co-operation relations; a local structure presenting a typology of industrial control adapted to our needs; a control centre, the main concept used to introduce control into simulation. The modelling language used is UML and the model is implemented using the object-oriented language JAVA. An industrial application was carried out in the company Alcatel with the help of the Apollo platform

Modelling for simulation of manufacturing systems control

International audienceThis article presents basic concepts regarding the modeling for simulation of production systems and in particular the concept of Control Center (CC). The CC is defined then formalized, for its integration in a simulation model. After an overview of the simulation current state of the art, the type of the selected control and structure are specified: an "interpreted control" in a "hierarchical coordinated structure". The CC is then described by giving its definition, its components and their organization in a simplified manner, as well as a typology of information defining the relations between the CC and the controlled system. Finally, we formalize the internal behavior of the CC in a detailed manner, for its integration in a PPS (Product Processing System)/CC network

Intégration du processus de pilotage à la simulation des systèmes de production

International audienceCet article se propose de présenter le pilotage industriel en vue de son intégration dans un modèle de simulation. Après une introduction sur l'évolution du pilotage et sur l'état actuel de la simulation, il décrit les principales étapes du pilotage selon la réactivité : pilotage « a priori », pilotage « réactif par anticipation » et pilotage « a posteriori ». Il propose ensuite, les concepts de centre de pilotage et de structure locale, ainsi qu'une typologie de l'information définissant les relations d'échange entre centres de pilotage et système à piloter. Enfin, l'application de l'étape d'un pilotage « a priori » est présentée par la simulation d'une ligne de production