A review of condition-based maintenance: Its prognostic and operational aspects

Condition-based maintenance(CBM)detects early signs of failure and dictates when maintenance should be performed based on the actual condition of a system.In this paper,we first review some of the recent research on CBM under various physical structures and signal data.Then,we summarize several kinds of prognostic models that use monitoring information to estimate the reliability of complex systems or products.Monitoring information also facilitates operational decisions in production planning,spare parts management,reliability improvement,and prognostics and health management.Finally,we suggest some research opportunities for the reliability and operations management communities to fill the research gap between these two fields.

计及风险损失的配电设备差异化运维策略优化

针对定期检修运维模式存在的运维资源分配不合理问题,提出了一种计及风险损失的配电设备差异化运维策略优化模型。首先以多源信息为输入,采用分层加权综合方法计算配电设备健康指数;然后利用故障后果模式分析法分析设备故障损失,以设备故障率和故障损失的乘积量化设备的风险水平;最后以检修成本和检修后系统风险损失加权和最小为目标,考虑有限运维资源约束,采用遗传算法求解配电设备的差异化运维策略。结合算例验证了模型有效性。