Optimal Control of Unreliable Production/Inventory Systems with Expediting
نویسندگان
چکیده
In this paper, we study an unreliable multi-product production/inventory system consisting of N production machines and an assembly machine. The final products are assembled-to-order whereas components are built at N separate production machines on a make-to-stock routine. The objective of our study is to develop an integrated optimal control policy that minimizes the total long-run average cost of production, expediting, inventory, preventive maintenance and repair. We present a three-critical-limit policy that addresses the production/expediting/inventory and preventive maintenance controls in an integrated manner. Furthermore, we propose a simulation based experimental design scheme based on response surface methodology to optimize the parameters of the policy. Finally, we provide an illustrative numerical example.
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