Control of engineering processes through integration of design activities and product knowledge

Within the frame of the development of GRAI methodology in the Concurrent Engineering domain, we propose to model jointly and simultaneously engineering activities and product. From an extension of GRAI nets to represent and pilot engineering activities, we model their nature (design, execution, decision) and their logic succession in the development process. For the description and the management of product knowledge, we use a model based on the concepts of functions and technological entities.