A closed queuing maintenance network for automated manufacturing systems

A closed queuing maintenance network for automated manufacturing systems

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Article ID: iaor20022689
Country: United Kingdom
Volume: 52
Issue: 10
Start Page Number: 1121
End Page Number: 1129
Publication Date: Oct 2001
Journal: Journal of the Operational Research Society
Authors: , ,
Keywords: production, queues: applications
Abstract:

This paper models an unreliable automated manufacturing system (AMS) by a closed queuing network. The AMS consists of a multi-stage network of automated work stations linked by a computer. A closed queuing algorithm is applied to determine the system availability under steady state for the AMS. This algorithm is then integrated into a cost optimization model. By applying the revised genetic algorithm, the optimal (or near-optimal) number of standby units and repair rates for the repair stations are derived by minimizing the total cost. The model is verified by the intuitive results from the sensitivity analysis. A numerical example is used to compare the revised genetic algorithm and the conventional genetic algorithm. The results show that the proposed revised algorithm leads to significant improvement in execution time and lower average total cost.

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