Abstract: Aiming at the series-parallel production system with multi-resource constraint, a multi-objective dynamic maintenance model is established by considering the availability of the system under multi-resource constraint and taking the priority of each process resource requirement as the standard. By introducing the weight factor and using the reliability recovery factor to describe the reliability change process before and after the maintenance of each process equipment, a maintenance strategy with the maintenance cost and system availability as the optimization objective was established. The preventive maintenance and opportunity maintenance thresholds of the system in a given interval are solved by simulation sampling. The results show that the maintenance strategy can guarantee the maintenance cost and system availability of the complex degraded production system under multi-resource constraints.

Key words: muliple resources constrained, series-parallel production system, multiple target, system availability, dynamic maintenance