Capacity and material requirement planning modelling by comparing deterministic and fuzzy models

J Mula (1) , R Poler (2) , José Pedro Garcia-Sabater (3)

1 Business Management
2 Business Management
3 Business Management

A model for the capacity and material requirement planning problem with uncertainty in a multi-product, multi-level and multi-period manufacturing environment is proposed. An optimization model is formulated which takes into account the uncertainty that exists in both the market demand and capacity data, and the uncertain costs for backlog. This work uses the concept of possibilistic programming by comparing trapezoidal fuzzy numbers. Such an approach makes it possible to model the ambiguity in market demand, capacity data, cost information, etc. that could be present in production planning systems. The main goal is to determine the master production schedule, stock levels, backlog, and capacity usage levels over a given planning horizon in such a way as to hedge against the uncertainty. Finally, the fuzzy model and the deterministic model adopted as the basis of this work are compared using real data from an automobile seat manufacturer. The paper concludes that fuzzy numbers could improve the solution of production planning problems.

Mots clés: Physical Sciences

J Mula, R Poler, José Pedro Garcia-Sabater. Capacity and material requirement planning modelling by comparing deterministic and fuzzy models. International Journal of Production Research, 2008, 46 (20), pp.5589-5606. ⟨10.1080/00207540701413912⟩. ⟨hal-00512984⟩