Scheduling of multi-die operations with multiple maintenance tasks

Production-Maintenance Scheduling (PMS) is to allocate resources over time to perform production and maintenance activities, aimed to improve productivity and reliability of production systems. This study extended the PMS model proposed in Wong et al. [1-3] and developed a novel methodology to schedule multi-die operations and the related maintenance tasks for the dies. In this paper, a new scheduling problem considered multi-die operations and die maintenance was identified and modeled. A Joint Scheduling (JS) methodology was developed and implemented in a genetic algorithm approach to deal with the new problem. Numerical examples showed that the proposed JS methodology could obtain shorter makespan comparing with the traditional Maximum Age (MA) methodology.