Simultaneous Planning of Production, Setup and Maintenance for an Unreliable Multiple Products Manufacturing System
Published: 2 July 2021
European Journal of Engineering and Technology Research , Volume 6, pp 24-34; https://doi.org/10.24018/ejers.2021.6.5.2495
Abstract: The work presented in this paper addresses the problem of joint optimization of the production, setup and corrective maintenance activities of a manufacturing system. This system consists of a machine subject to breakdowns and repairs and producing two types of parts. A corrective maintenance strategy whose repair rate depends on the number of setup operations already performed on the production system is considered in this work. The objective of this research is to propose a policy that controls production, setup, and corrective maintenance. The contribution of this paper is through the control of the repair rate, combined with the planning of production and setup in a dynamic and stochastic context. Optimality conditions in the form of Hamilton-Jacoby-Bellman (HJB) equations are obtained and a numerical approach is proposed in order to deal with the joint optimization issues. Extensive simulations are performed to address many scenarios that illustrate the interactions between production, setup and maintenance activities.
Keywords: joint optimization / planning of production / manufacturing / repair / corrective maintenance
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