Prise en compte de la fatigue des opérateurs dans la modélisation et la simulation des systèmes de production

Abstract : The quick development of information technology in the factory of the future requires rethinking about the organization of production systems. Although the importance of the workers in the industry 4.0, human factors are still insufficiently taken into consideration in the organizational methods. Simulation is among the methods widely used to study production systems and evaluate their performances. However, the existing simulation approaches and the available softwares mainly focus on technical dimensions of these systems (machines, transport, priority rules, etc.). Unfortunately, human factors, particularly workers’ fatigue, seem to be very insufficiently taken into account in the simulation models. In this context, this thesis aims to study how the workers’ fatigue could be integrated into the simulation models of workshops. A framework combining different modelling paradigms is proposed to help in designing such models. Discrete event simulation is used to describe the dynamic of the working process in workshops. The paradigm of intelligent agent is used to model operators and integrate their behavior of fatigue, which has been modeled using continuous simulation paradigms. We have also used fuzzy logic in order to characterize the arduousness’s factors, known imprecisely, and impacts on the evolution of the workers’ fatigue. We have shown how the proposed framework can be implemented can be implemented generically enough with the software ANYLOGIC. The proposed approach has been then used to address two different production problems: the first one concerns the dynamic assignment of workers to machines and the second is related to the machines layout in the design stage of the system. This illustrated the utility of the proposed approach and showed its relevance. The analysis of the simulation results yields some knowledge on both the performance of the systems and on trends of the evolution the operators’ fatigue during the work. Such results help to thank on how to improve the methods of organization and management of the workshops so to contribute to the improvement of their performances and the well-being of their operators.
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Aicha Ferjani. Prise en compte de la fatigue des opérateurs dans la modélisation et la simulation des systèmes de production. Autre [cs.OH]. Université Clermont Auvergne; Université de Sfax (Tunisie), 2019. Français. ⟨NNT : 2019CLFAC003⟩. ⟨tel-02137469⟩

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