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Combination of planning methods in a comprehensive production planning approach for sequenced production lines

: Auer, Stefan; Matyas, Kurt


CIRP Annals. Manufacturing Technology 61 (2012), Nr.1, S.445-448
ISSN: 0007-8506
Fraunhofer Austria ()
Kundenspezifische Fertigung; production planning; sequencing; Reihenfolgeplanung; Auftragsplanung; Fertigung; Fertigungsplanung; Software; Fertigungsanlage

Medium-term sales and operations as well as medium to short-term production planning in customer order driven production processes are performed using a cascading planning process. A lack of coordination and feedback between different planning phases causes problems with a negative effect on costs in production that originate from unfeasible production programs. Based on a system for the classification of planning restrictions the planning process will be controlled utilizing a newly developed combination of the methods of Linear Programming and Constraint Programming. The result is a formal logic to combine the different planning horizons and the two sets of planning methods.