A fuzzy logic modelling of dynamic scheduling in Flexible Manufacturing Systems

A fuzzy logic modelling of dynamic scheduling in Flexible Manufacturing Systems

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Article ID: iaor2007122
Country: United Kingdom
Volume: 44
Issue: 11
Start Page Number: 2183
End Page Number: 2203
Publication Date: Jan 2006
Journal: International Journal of Production Research
Authors: , ,
Keywords: fuzzy sets
Abstract:

This paper is concerned with scheduling in flexible manufacturing systems using a fuzzy logic approach. Four fuzzy input variables: machine allocated processing time, machine priority, due date priority and setup time priority are defined. The job priority is the output fuzzy variable, showing the priority status of a job to be selected for next operation on a machine. The model will first select the machines and then assign operations based on a multi-criteria scheduling scheme. The performance of the approach is compared against established methods reported in the literature. The performance measures considered average machine utilisation, meeting due dates, setup times, work in process and mean flow times. The test results demonstrate the superiority of the fuzzy logic approach in most performance measures.

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