论文部分内容阅读
文章研究了两种适用于多备用部件系统的新型双防性更换策略.部件的工作失效率是恒定不变的.系统通过随机时刻进行的检测结果,即根据检测出的已失效的部件数来判定系统是否需要进行更换.如果整个系统在运行过程中失效,可有两种更换方案供选择:1)在检测时发现系统失效(非自报系统失效)进行更换;2)系统发生失效时(自报系统失效)即刻进行更换.作为系统更换依据的部件失效数在某一阀值时可使平均总费用达到最低.我们提出一种发现这一最佳阀值的简单而有效的方法.文章还比较了采用随机检测的系统操作费用和采用监测装置进行连续监测的系统操作费用,并讨论了这些费用的折衷方案.
This paper studies two new double-prevention replacement strategies that are suitable for multi-spare parts systems. The work failure rate of components is constant. The system uses the results of tests conducted at random moments, that is, based on the number of failed parts detected Determine whether the system needs to be replaced.If the entire system fails during operation, there are two options to choose from: 1) system failure detected during the test (non-self-reported system failure) to be replaced; 2) system failure Self-reported system failure.) The number of component failures that are the basis for system replacement minimizes the average total cost at a certain threshold. We present a simple but effective way to find this optimal threshold. The operating costs of the system using stochastic testing and the operating costs of the system for continuous monitoring using monitoring devices are also compared and the compromise of these costs is discussed.