Production and Operation Managements Advancement in Production Planning and Control Dr.Na GENG Prof.Zhibin JIANG Department of Industrial Engineering Management Shanghai Jiao Tong University
Production and Operation Managements Dr. Na GENG Prof. Zhibin JIANG Department of Industrial Engineering & Management Shanghai Jiao Tong University Advancement in Production Planning and Control
Content Optimized Production Planning Theory of Constraint (TOC) Advanced Planning System (APS) Mass Customization and its Production Planning 2 上浒充通大粤
Content Optimized Production Planning Theory of Constraint (TOC) Advanced Planning System (APS) Mass Customization and its Production Planning 2
Optimized Production Planning The most prevalent approach in the production planning is based on the concept of material requirement planning (MRP). √ The release time is obtained by shifting the expected output time back along the time scale by a period of the estimated average lead time; The release quantity is derived by dividing the expected output by the estimated average product yield. 上浒充通大粤
Optimized Production Planning The most prevalent approach in the production planning is based on the concept of material requirement planning (MRP). The release time is obtained by shifting the expected output time back along the time scale by a period of the estimated average lead time; The release quantity is derived by dividing the expected output by the estimated average product yield
Optimized Production Planning However,MRP-based methods have three major drawbacks: The lead time not only needs to be pre-specified but also is assumed to be static over the entire planning horizon; The capacity is assumed to be infinite,which means the derived production planning may not be realized; The production system is made nervous.Little adjustment in MPS changes the due date,requiring the recalculation of MRP 上浒充通大粤
Optimized Production Planning However, MRP-based methods have three major drawbacks: The lead time not only needs to be pre-specified but also is assumed to be static over the entire planning horizon; The capacity is assumed to be infinite, which means the derived production planning may not be realized; The production system is made nervous. Little adjustment in MPS changes the due date, requiring the recalculation of MRP
Optimized Production Planning -Introduction New methods need to be developed for production planning based on mathematical programming Time Dimension Space Dimension: .Corporate level planning:production planning .Shop floor level planning:production lot planning Mathematical programming based optimized Production Planning Commonly used in production planning: Linear Programming(LP)-the most widely used methods; Stochastic Programming (SP)-coping with the uncertainty 上泽充道大睾
Optimized Production Planning -Introduction New methods need to be developed for production planning based on mathematical programming Time Dimension Space Dimension: •Corporate level planning: production planning •Shop floor level planning: production lot planning Mathematical programming based optimized Production Planning Commonly used in production planning: Linear Programming (LP)- the most widely used methods; Stochastic Programming (SP)-coping with the uncertainty