Cost and Quality of Service Analysis of Production Systems Based on the Cumulative Downtime

Jose Antonio Faria (1) , Eusebio Manuel Nunes (2) , Manuel Antonio Matos (3)

1 Faculty of Engineering
2 Department of Production Systems
3 INESC-ID - Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa

The paper presents a method for the analysis and design of industrial production systems based on a joint assessment of the cost and the quality of service. The operation of a production system is seen as the accomplishment of a sequence of missions, each one corresponding to the cost-effective production and delivery of a specified quantity of products within a specified time frame. The paper shows that the probability of successfully accomplishing a mission is a non linear function of the cumulative production downtime and that this time can not be obtained using conventional Markov based techniques. The paper also introduces an analytical model and a procedure that allows the density function of the downtime to be obtained and shows how, using these tools, the production costs and the quality of service may be assessed and related to the internal design of the shop floor. The method seems to be particularly valuable in the analysis of production systems integrated in just-in-time supply chains, in which the reliability of the deliveries is an outstanding requirement.

Mots clés: Physical Sciences

Jose Antonio Faria, Eusebio Manuel Nunes, Manuel Antonio Matos. Cost and Quality of Service Analysis of Production Systems Based on the Cumulative Downtime. International Journal of Production Research, 2009, 48 (06), pp.1653-1684. ⟨10.1080/00207540802068631⟩. ⟨hal-00548942⟩