考虑残值的二手设备租赁预防维护策略优化

针对具有一定年龄的二手设备租赁的特殊性,提出周期预防维护策略。该维护策略从设备的全生命周期出发,综合考虑设备的残值、年龄、预防维护、小修以及惩罚机制等因素对利润的影响,建立以出租方期望利润最大化为目标的周期预防维护模型,并给出模型取得最优策略的理论证明。最后通过算例分析表明,该策略符合二手设备租赁维护的实际情况,可为出租方提供有效的维护解决方案。

Optimal preventive maintenance policy for second-hand equipment under lease considering residual value

For the lease of the second-hand equipment with certain past age, a periodic preventive maintenance strategy was presented. Several factors from the life cycle of the equipment which influence the profit of the lessor, such as the equipments residual value, age, preventive maintenance, minimal repair and punishment mechanism were considered. Under this maintenance scheme, a mathematical model based on the expected total profit of the lessor was established, and the optimal maintenance policies were derived such that the expected total profit was maximized. The proof was givern to obtain the optimal policy of the model. Finally, in case study, the numerical results show that the proposed strategy is practical and can provide effective maintenance solutions for lessors.