带有违约的延迟时间检查和维修策略的研究

Research on Delay Time Inspection and Maintenance Strategies with Default

摘要: 针对设备存在异常和故障两种相关性缺陷，使用延迟时间概念，研究了检查和维修策略。假定设备随时间性能下降，可能发生异常，进而导致故障。由于缺陷的发生存在一定的时间延迟，将设备的运行周期按序划分为名义检查和实际检查两个阶段。通过优化检查间隔、实际检查节点和计划更新节点，使设备的平均成本率最小化。考虑了维修违约对决策方案的影响。仿真计算验证了模型的有效性，灵敏度分析讨论了模型参数对最佳决策方案的影响。

Abstract: Aiming at the correlation defects of anomalies and failures in the system, the concept of delay time was used to study inspection and maintenance strategies. Assuming that the system’s performance decreases over time, and anomalies may occur, leading to failures. Due to a certain time delay in the occurrence of defects, the operating cycle of the system is sequentially divided into two stages: nominal inspection and actual inspection. By optimizing inspection intervals, actual inspection nodes, and planned update nodes, the average cost rate of the system is minimized. The influence of maintenance default on the decision scheme is considered. Simulation calculations have verified the effectiveness of the model, and sensitivity analysis has discussed the impact of model parameters on the optimal decision scheme.