Resumen de Mixed integer linear programming models to measure the economic impact of Zero-Buffers in Heijunka Flow Shop Scheduling

Joaquín Bautista Valhondo, Rocío Alfaro Pozo

• concept of Just in Time manufacturing is applied, imposing on the sequences of products that they preserve the production mix through linear constraints. In this work, we propose a MILP model for the new problem which is solved with the IBM-CPLEX solver using the set of 23 Nissan-9Eng.I instances. It is concluded that the economic impact due to production losses is very significant when the buffers between the stations of the engine production line are suppressed (1224 €/day), while the economic impact generated by Heijunka is negligible (9.83 €/day) compared to the economic and management advantages it offers