把“修理设备可发生故障”首次引入到可修排队系统研究中,考虑修理设备可更换的M/G/1可修排队系统.假设服务台的寿命服从负指数分布,失效后的修理时间服从任意分布,而且修理设备在修理失效服务台的过程中也可能发生故障,其寿命服从负指数分布,更换修理设备所需时间服从任意分布,使用全概率分解技术,利用Laplace变换和Laplace—Stieltjes变换工具,讨论了系统的排队指标和服务台的可靠性指标,同时重点讨论了修理设备的瞬态不可用度、稳态不可用度,以及在(0,他)时间内的平均更换次数和稳态故障频度.
This paper considers the M/G/1 repairable queueing system with a replaceable repair facility in which the "repair facility subject to breakdowns" is firstly introduced. Assume that the lifetime of the service station follows an exponential distribution and the repair time of the failed service station follows an any distribution. Furthermore, the repair facility may fails in the process of repairing the failed service station, in which the lifetime of the repair facility also follows an exponential distribution and the replaceable time of the failed repair facility has a general distribution. By using the total probability decomposition technique and employing the Laplace transform and Laplace-Stieltjes transform, the queueing indices of the system and the reliability indices of the service station are discussed. Meanwhile, the emphasis is upon obtained some reliability indices of the repair facility, such as the transient-state and steady-state unavailability, the expected replacement number during (0, t] and the steady-state failure frequency.