系统工程理论与实践
繫統工程理論與實踐
계통공정이론여실천
Systems Engineering—Theory & Practice
2014年
4期
944~950
,共null页
唐应辉 朱亚丽 吴文青
唐應輝 硃亞麗 吳文青
당응휘 주아려 오문청
可修排队系统 温储备失效 队长分布 等待时间 全概率分解
可脩排隊繫統 溫儲備失效 隊長分佈 等待時間 全概率分解
가수배대계통 온저비실효 대장분포 등대시간 전개솔분해
repairable queueing system; warn, standby failure; queue length distribution; waiting time;total probability decomposition
本文把“服务台在系统闲期中可能温储备失效”引入到M/C/1可修排队系统中,考虑了具有温储备失效特征的M/G/1可修排队系统.使用全概率分解技术和利用拉普拉斯变换工具,导出了在任意时刻t队长的瞬态分布的拉普拉斯变换的表达式,进一步获得了队长的稳态分布的递推式,同时,给出了稳态队长和稳态等待时间的随机分解结果.最后通过数值计算实例讨论了平均附加队长随温储备失效参数和修复参数的变化情况.
本文把“服務檯在繫統閒期中可能溫儲備失效”引入到M/C/1可脩排隊繫統中,攷慮瞭具有溫儲備失效特徵的M/G/1可脩排隊繫統.使用全概率分解技術和利用拉普拉斯變換工具,導齣瞭在任意時刻t隊長的瞬態分佈的拉普拉斯變換的錶達式,進一步穫得瞭隊長的穩態分佈的遞推式,同時,給齣瞭穩態隊長和穩態等待時間的隨機分解結果.最後通過數值計算實例討論瞭平均附加隊長隨溫儲備失效參數和脩複參數的變化情況.
본문파“복무태재계통한기중가능온저비실효”인입도M/C/1가수배대계통중,고필료구유온저비실효특정적M/G/1가수배대계통.사용전개솔분해기술화이용랍보랍사변환공구,도출료재임의시각t대장적순태분포적랍보랍사변환적표체식,진일보획득료대장적은태분포적체추식,동시,급출료은태대장화은태등대시간적수궤분해결과.최후통과수치계산실례토론료평균부가대장수온저비실효삼수화수복삼수적변화정황.
This paper considered the M/G/1 repairable queueing system with warm standby failure in which the "service station may fail in warm standby during idle period". By using the total probability decomposition technique and Laplace transform, we give the recursion expressions of the Laplace transform of the transient queue length distribution at any time t. And the recursion expressions of the steady state queue length distribution are also obtained. Meanwhile, we demonstrate stochastic decomposition struc- tures of the steady state queue length distribution and the steady state waiting time. Finally, numerical examples are given to illustrate the effect of the warm standby failure parameter and repairable parameter on the exoected additional queue length.