Robustness of the linear workshop to the change of ratio

This study concentrates on linear flow-shop whose organization is generally optimized for a well defined production in term of quantity and qualityIn front of the economic needs which require a constant adaptation of the product, an analytical evaluation of the robustness to the changes of the ratios of production is presented. This evaluation is based on the assumption of a cyclic operation, which allows the modeling of the system by a strongly connected event graph. A modular decomposition allows the insulation of the ratio indeterminism in module. It thus makes possible to convert the model into an event graph with associated constraints. The robustness to ware ratio changes is evaluated. It’s important to notice that during this study, we evolve in static mode (ratios do not change throughout the production) It is relevant information for piloting the workshop.