Optimal Control of the D-Policy M/G/1 Queueing System with Server Breakdowns | Science Publications

American Journal of Applied Sciences

Ching-Chang Kuo¹  Jau-Chuan Ke¹  Kuo-Hsiung Wang¹ 

关键词: Analytic results;    breakdowns;    general repair time;    general service time;    optimal policy;    sensitivity analysis;   

DOI  :  10.3844/ajassp.2008.565.573

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

This study deals with a single server in the D-policy M/G/1 queueing system in which the server is turned off at the end of each complete period and is activated again only when the cumulative completion times of the customers in the system exceeds a given level D. While the server is working, he is subject to breakdowns according to a Poisson process. When the server breaks down, he requires repair at a repair facility, where the repair time obeys a general distribution. We have demonstrated that the probability that the server is busy in the steady-state is equal to the traffic intensity. The total expected cost function per customer per unit time is constructed to determine the optimal operating D-policy at a minimum cost. We use the steady-state analytic results and apply an efficient Matlab computer program to calculate the optimal value of D. Based on three different service distributions: exponential, 3-stage Erlang and deterministic, we provide extensive numerical computation for illustration purpose. Sensitivity analysis is also investigated.

【 授权许可】

Unknown