| 摘要 |
A fast system addressing the same problem as MRP-II is described which is suitable for a multi-processor computer. The system performs both material requirements planning and capacity resource planning. Material requirements planning is performed by the multi-processor computer (504) as follows. A process tree incorporating a bill of materials as well as routing information is ranked, and the orders for the materials of each rank are exploded before any order for any higher rank material is exploded. Separate processors (536) explode in parallel the orders for separate materials of the same rank. Capacity Resource Planning is performed in parallel, a separate processor (536) planning the capacity of a separate work center. Simulation of material production is performed in parallel for each rank, separate processors simulating the production of separate materials of the same rank. The simulation is performed starting with the highest rank and proceeding in sequence to the lowest rank. Simulation of work center schedules is performed in parallel similarly to the MRP-II method described. The invention is applicable also to Just-in-Time manufacturing, and to planning and simulation in transportation industries. |
