Joint Optimization of Production and Condition-Based Maintenance with Speed-Dependent Degradation

Abstract

International audienceMaintenance operations and production parameters are often optimized separately. We consider a system in which the production speed directly influences the system’s degradation. We propose a combined approach to jointly optimize the production speed and the maintenance decisions under a condition-based maintenance policy in order to maximize the average production rate. We show that in a deterministic setting, the optimal strategy consists in operating at a constant production speed until the system reaches the selected degradation threshold. For the specific case where the degradation rate depends on a power of the production speed, we derive a closed-form expression for the optimal speed as well as a simple optimization procedure for determining the optimal degradation threshold. In that case we study the effect of several parameters on the optimal policy and production rate