可靠性及动态维修成本下的定期预防维修研究

Periodic Preventive Maintenance Based on Reliability and Dynamic Maintenance Cost

良好的设备维修策略对企业的竞争力有着重要的影响。设备维修需要考虑可靠性和维修成本的问题。首先,假设设备的故障率服从威布尔分布,设备的预防维修成本会随着维修次数的增加而增加;随后构建了可靠性水平有限且预防维修成本变化情况下的定期预防维修模型,在使总成本最小的前提下,求出了最优的预防维修次数和预防维修周期;最后以实例验证了模型的有效性。

Good equipment maintenance policy has the important influent to the competitive force of the enterprise.Equipment maintenance needs to consider the reliability and maintenance cost.First,assuming the equipment failure obeys Weibull distribution,the equipment preventive maintenance cost will increase with maintenance frequency.Then,the periodic preventive maintenance model based on limited reliability and variable maintenance cost is build.The optimal preventive maintenance frequency and preventive maintenance cycle are found on the condition of minimizing the total maintenance cost.Finally,the example demonstrates the effectiveness of the model.