A DECISION-SUPPORT SYSTEM FOR VARIABLE ROUTINGS MANAGEMENT IN MANUFACTURING SYSTEMS

The increase in flexibility of manufacturing systems makes variations possible in routings, operations, machines or operators. These degrees of freedom may be used to react to unpredictable events such as failu res or changes in the workshop environment. We suggest a decision supp ort system to manage variable routings that can help in the search for solutions to mitigate the consequences of a failure and in the evalua tion of these solutions. To deal with imprecise data, such as duration of maintenance, this evaluation is based on the modelization of the w orkshop objective, using the theory of possibility and the fuzzy logic . The system uses a data base of which the structure is briefly descri bed. An example is depicted with an objective function based on two el ementary objectives: delivery date and cost.