Synchronizing the Operation of Workshops in Custom Production

Abstract

The article describes the SAPFORD-based methodology for reconciling and restructuring the schedules of workshops and sections in the event of failures in the work of production and supply services. An efficient method is proposed for constructing a unified production schedule for a plant, optimized by the criterion of minimizing costs associated with servicing work in progress and penalties for delays in order fulfillment. The task of planning custom-made production is decomposed into subtasks of distributing work to workplaces with specified parameters within acceptable time frames. For each work, the target function of the dependence of the increase in the production price on the amount of delay or premature execution of the work is set and the time of its execution is calculated for which the delivery date of the product is not violated and the “idling” time of the part before the operation starts is minimal. The criteria for subtasks are coordinated by the method of mutual penalties, the essence of which is that the competing jobs in the queues penalize each other with increments of their estimates when letting the competitor take the lead. The first in line is the work with the smallest sum of its own criteria and penalties for delaying competitors. If there are production delays in one shop, the estimates of delayed orders are recalculated and the work in other shops is reordered. The results of the recalculation of the shop operation plans are reflected in the shop nomenclatures of priority works. An example of the solution is given.