A study of production management system with MRP

Article Abstract:

The material requirements planning system, considered as one of the most advanced production control methods in the jobbing production system, uses aggregate production planning to determine the supply of required materials, thus allowing effective utilization and smooth supply, a more efficient production process and higher productivity. However, the use of the critical ratio rule in the system lessens the effectiveness of the MRP system. To resolve this problem, a new priority rule which considers backorders and stocks on orders in the MRP system is proposed. A model experiment shows the effectiveness of the proposed priority rule.

Innovations, Material requirements planning

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Replanning timing in hierarchical production planning

Article Abstract:

The relationship between the timing for replanning and the buffer inventory is discussed in terms of the performance of a multistage production system characterized by multiple opportunities for replanning with the accumulated production lead time. The unfilled rate for market demand and the rate of change in production quantity due to replanning are utilized to determine the relationship. A simulation indicates a basis for the choice of a replanning rule.

Production planning

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The elements and functions of hierarchical scheduling system of order production

Article Abstract:

Scheduling systems of order production currently in use by manufacturers are proving to be inadequate in the face of changing customer demands and the development of new products. Researchers have tried to come up with better alternatives to these scheduling systems. One of these alternatives is the so-called hierarchical scheduling system. The elements and functions of this type of system are discussed.

Models, Scheduling (Management)

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