基于延迟时间理论的两部件并联系统检测区间模型

An Inspection Model for a Two-component Parallel System Using the Delay-time Concept

延迟时间理论广泛应用于系统维修领域,更为细致和准确的反映了系统的运行状态,对于系统的维修建模及确定系统的检测区间起到了重要的作用.但是,以往关于延迟时间理论的应用几乎都是关于单部件系统或串联系统的,而并联系统在实际中也有很广泛的应用.应用延迟时间理论对两部件并联系统的检测区间进行研究,在部件缺陷发生的初始时间为非指数分布的情况下,提出了两种不同的维修措施,并以单位时间期望维修费用最小为目的,对每一种维修措施分别进行研究.文章最后给出了数值案例及模拟运算结果,并对未来的工作做了展望.

The delay-time concept has been extensively applied in the field of maintenance modeling and optimization, but previous works are mainly restricted to single-component systems and series systems： In this paper, we propose a delay-time based model to determine the optimal inspection interval of a parallel system under assumption that the time-to-defect of the components is non-exponential distributed. As a beginning, this paper considers a two- component parallel system with two maintenance strategies, and this work can be extended to general parallel systems in the future. Numerical example is presented to illustrate the model.