Production order determining method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKuniya Kaneko, Harumichi Wakiyama, Tadasi Naito
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Abstract
A method for controlling a production apparatus includes steps of providing production information in the form of a specified production time period with respect to a plurality of product types, calculating a production expectation value for each specified production time period, summing the production expectation values for each specified production time period for all the product types and then integer-processing the total number of product portions to be produced each day, providing each day with as many production orders as the integer-processed number of product portions to be produced on that day, and then determining by an average process what product type should be produced in each production order.
Claims9
A method for controlling a production apparatus comprising the steps of:
- providing production information in the form of a specified production time period and a number of products to be produced in the specified production time period with respect to each of a plurality of product types:
- calculating a first production expectation value for each specified production time period to be produced a day with respect to each of the product types, by dividing the number of products to be produced in each specified production time period by a number of days included in the respective specified production time period;
- summing the first production expectation values in each specified production time period for all the product types with respect to each day to calculate a total number of products to be produced each day, and then integer-processing the total number of products to be produced each day;
- generating a production order sequence providing as many production orders for each day as the integer-processed number of products to be produced on that day, and then average-processing production intervals by summing the production expectation values for each respective product type to determine what product type should be produced in each production order;
- and
- controlling a production apparatus to transfer a material to a production line based on the production order sequence generated, and producing the ordered product.
A method for controlling a production apparatus comprising the steps of:
- providing production information in the form of a specified production time period and a number of products to be produced in the specified production time period with respect to each of a plurality of product types:
- calculating a first production expectation value for each specified production time period to be produced a day with respect to each of the product types by dividing the number of products to be produced in each specified production time period by a number of days included in the respective specified production time period;
- summing the first production expectation values in each specified production time period for all the product types with respect to each day to calculate a total number of products to be produced each day, and then integer-processing the total number of products to be produced each day;
- generating a production order sequence providing as many production orders for each day as the integer-processed number of products to be produced on that day;
- calculating a second production expectation value for production of each product type and each production order using the following equations:
- X.sub.i1 =P.sub.i1
- X.sub.i1 =X.sub.ij-1 +P.sub.ij -D.sub.ij-1
- wherein X.sub.ij is a second production expectation value for production of product type i and production order j;
- wherein P.sub.ij is the sum of all first production values for each specified production time period with respect to production of product type i in a day on which product type i is to be produced in production order j, and varies in accordance with the order j;
- wherein D.sub.ij is a variable that is equal to the total number of products to be produced on the day that contains the production order j and the production of product type i, and wherein D.sub.ij is equal to zero when there is no production of product type i;
- determining that a product type which has the largest second production expectation value in each production order should be produced in the production order;
- and
- controlling a production apparatus to transfer a material to a production line based on the production order sequence generated, and producing the ordered product.
Dependencies are inferred from the claim text.