Scheduling is one of the most important decisions in production control. An approach is
proposed for supporting users to solve scheduling problems, by choosing the combination
of physical manufacturing system configuration and the material handling system settings.
The approach considers two alternative manufacturing scheduling configurations in a two
stage product oriented manufacturing system, exploring the hybrid flow shop (HFS) and
the parallel flow shop (PFS) environments. For illustrating the application of the proposed
approach an industrial case from the automotive components industry is studied. The main
aim of this research to compare results of study of production scheduling in the hybrid and
the parallel flow, taking into account the makespan minimization criterion. Thus the HFS
and the PFS performance is compared and analyzed, mainly in terms of the makespan,
as the transportation times vary. The study shows that the performance HFS is clearly
better when the work stations’ processing times are unbalanced, either in nature or as a
consequence of the addition of transport times just to one of the work station processing
time but loses advantage, becoming worse than the performance of the PFS configuration
when the work stations’ processing times are balanced, either in nature or as a consequence
of the addition of transport times added on the work stations’ processing times. This means
that physical layout configurations along with the way transport time are including the work
stations’ processing times should be carefully taken into consideration due to its influence
on the performance reached by both HFS and PFS configurations.
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