Production planning method and apparatus
First Claim
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1. A production planning method, comprising:
- calculating an amount of requirements to a pre-process, based on a difference between a sum of an predetermined amount of products in progress set in each process and an amount of requirements from a post-process, and an actual amount of products in progress, and notifying the pre-process of the difference as an accumulated amount of requirements of the post-process (step 1);
calculating a valid amount of products in progress, based on an actual amount of products in progress and an amount of requirements in each process (step 2); and
dynamically switching and performing a pull type production process if the actual amount of products in progress>
the amount of requirements, and a push type production process if the actual amount of products in progress<
the amount of requirements, based on a relationship between the actual amount of products in progress and the amount of requirements in each process (step 3).
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Abstract
A production planning apparatus in a production line which conducts production in each process includes an on-line push/pull type production planning device, an off-line system control device and memory connected to the push/pull type production planning device and the system control device, for storing a variety of information. The push/pull type production planning device determines the behavior of a target process based on the amount of requirements from a post-process, the predetermined amount of products in progress and the achieved amount of products in progress; and the system control device optimizes parameters.
33 Citations
14 Claims
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1. A production planning method, comprising:
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calculating an amount of requirements to a pre-process, based on a difference between a sum of an predetermined amount of products in progress set in each process and an amount of requirements from a post-process, and an actual amount of products in progress, and notifying the pre-process of the difference as an accumulated amount of requirements of the post-process (step 1);
calculating a valid amount of products in progress, based on an actual amount of products in progress and an amount of requirements in each process (step 2); and
dynamically switching and performing a pull type production process if the actual amount of products in progress>
the amount of requirements, and a push type production process if the actual amount of products in progress<
the amount of requirements, based on a relationship between the actual amount of products in progress and the amount of requirements in each process (step 3). - View Dependent Claims (2, 3, 4, 6, 7)
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5. A production planning apparatus in a production line for conducting production in each process, comprising:
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an on-line push/pull type production planning device;
an off-line system control device; and
a memory connected to the push/pull type production planning device and the system control device, for storing a variety of information, said push/pull type production planning device determines the behavior of a target process based on the amount of requirements from a post-process, the predetermined amount of products in progress and the achieved amount of products in progress; and
said system control device optimizes parameters. - View Dependent Claims (8)
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9. A program enabling a computer to perform a production planning method comprising:
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calculating an amount of requirements to a pre-process, based on a difference between a sum of an predetermined amount of products in progress set in each process and an amount of requirements from a post-process, and an actual amount of products in progress, and notifying the pre-process of the difference as an accumulated amount of requirements of the post-process;
calculating a valid amount of products in progress, based on an actual amount of products in progress and an amount of requirements in each process; and
dynamically switching and performing a pull type production process if the actual amount of products in progress>
the amount of requirements, and a push type production process if the actual amount of products in progress>
the amount of requirements, based on a relationship between the actual amount of products in progress and the amount of requirements in each process. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification