JP2008293475A - Steel tapping frame arrangement planning device, method, and program, and computer readable storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to make a steel tapping frame arrangement plan which simultaneously meets requests conflicting with each other, for production lot enlargement, punctuality in delivery date, and manufacturing process leveling so that lot making, process load leveling, and delivery date optimization may be secured and cast formation may be most suitable for an entire planning object period. <P>SOLUTION: The steel tapping frame arrangement plan is made by: an input means which takes in order information of product types, process processing occurrence probabilities per product type, and information about a planning strategy; an order database storage means 101; a production type model storage means 104; an order matrix generation means 102; a planning strategy setting means 105 for setting a planning strategy parameter; an optimization calculation means 106 which minimizes or maximizes evaluation functions relating to delivery delay, product stock, and steel tapping lot enlargement to calculate the steel tapping frame arrangement plan and fames to be applied per product type; a steel tapping planning result display means 107; and a steel tapping planning result registration means 108. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a steel production frame layout planning apparatus and method capable of satisfying a steel delivery date, suppressing a product inventory, satisfying a restriction of a refining process and improving production efficiency in a steelmaking process. The present invention relates to a program and a computer-readable storage medium.

  In the steel manufacturing industry, product standards and sizes are extremely diverse, and there is an increasing demand for compliance with delivery dates and shortening delivery times according to the customer's product use schedule. On the other hand, in the manufacturing industry, from the viewpoint of productivity improvement by mass production, it is required to produce multiple orders with the same scientific components of products in steelmaking facilities in batch units. In the steel manufacturing industry, The steelmaking facility is basically a facility aimed at mass production of steel of the same composition. However, the manufacturing process consists of multiple manufacturing facilities such as steelmaking, rolling, refining, and shipping. Pursuing the productivity of lots in the steelmaking process decreases the productivity of other manufacturing facilities, and the lots in steelmaking facilities. Since the summarization leads to concentration of manufacturing load in the downstream process and causes an increase in work in progress and an increase in the manufacturing period, it is required to create a steel-out lot considering the trade-off between the manufacturing processes. In addition, pre-fabrication for making a lot causes extra product inventory and a corresponding increase in work period. In other words, it is necessary to create a steel frame arrangement plan that can cast steel of the same component as much as possible in a steel making facility while achieving equalization of load in each manufacturing process and delivery date management.

  On the other hand, in Patent Document 1, after calculating the provisional steel desired date by the standard work period between each process based on the production record management date, and after creating the cast factor in the steel type in the order of early provisional steel desired date A method for achieving equalization of the operation rate of each production line and delivery time management by inputting into a production process according to a predetermined priority order is disclosed.

  Patent Document 2 discloses an objective function including one of a function of a difference with a target of a provisional steel scheduled date, a function of a difference with a target of physical distribution balance, a function of a load balance in a casting process, or a combination thereof. A method of applying an order to a casting frame while optimizing the above is disclosed.

  Further, in Patent Document 3, in order to achieve the leveling of the manufacturing load in the lower process, each type classified based on the manufacturing process is assigned to the capacity frame of the lower process, and a casting request date is given. A method of allocating to a rough production lot by a quadratic programming method is disclosed so that the difference between the charge equivalent and the requested casting amount is minimized for each type of requested day.

JP 05-35748 A JP 2000-176634 A JP 2005-259122 A

  The invention described in Patent Document 1 is such that cast factors are created for steel types in the order of early date of provisional steel desired date, and then are put into a production process according to a predetermined priority order. There was a problem that optimization of delivery and delivery was not guaranteed.

  In addition, the invention described in Patent Document 2 is to allocate an order to a steel output frame in which the result of the steel output plan is stored, but the process member made distribution adjustments with other varieties. The result has been determined, and Patent Document 2 does not disclose any method for creating the steel frame.

  Furthermore, the invention described in Patent Document 3 is to apply a plurality of types to a rough production lot that is a steel frame of a plurality of steel types. Patent Document 3 discloses nothing about how to obtain a rough production lot. It has not been. Further, in the invention described in Patent Document 3, cast knitting is not performed for the entire planning target period, but cast knitting is performed for each order that is close to the steelmaking request date. It is not the optimal cast organization.

  The present invention has been made in view of the above points, and rough production is performed so that lot consolidation, process load leveling and delivery date optimization are guaranteed, and an optimum cast knitting is achieved for all planning target periods. Obtain a lot, create a steel frame, and plan the steel frame layout to satisfy the mutually conflicting requirements of expanding production lot, observing delivery date, and leveling the production process for the unfinished steel orders entered The purpose is to be able to plan.

The steel frame arrangement planning apparatus of the present invention consolidates the types of steel materials with similar production specifications as one production type in the steel making process, and orders that have the same production type and output date are the same order. For the order matrix aggregated as a group, while satisfying the load constraints of the refining process, the output frame arrangement plan is decided to determine the arrangement of the output frame to minimize the delivery delay and product inventory and expand the output lot. An apparatus for inputting order information of manufacturing varieties, process processing occurrence probability by manufacturing varieties, and information on a planning policy, order database storage means for storing order information of a plurality of manufacturing varieties, and a plurality of manufacturing Manufacturing product model storage means for storing the probability of occurrence of process processing by product type, order matrix creation means for creating an order matrix based on information in the order database, and planning method Using planning policy setting means for setting planning policy parameters that are various conditions for performing calculation to determine the steel frame arrangement from information about, using the order matrix, the production model, and the planning policy parameters, Optimization calculation means for calculating the output frame arrangement plan and the production type allocation frame by minimizing or maximizing an evaluation function relating to delay in delivery, product inventory, and output steel lot expansion, and the output frame arrangement plan and manufactured product It is characterized by comprising a steelmaking plan planning result display means for displaying a steelmaking plan planning result comprising a type allocation frame and a steelmaking plan planning result registration means for registering the steelmaking plan planning result.
In the steelmaking frame layout planning method of the present invention, in the steelmaking process, steel products with similar production specifications are aggregated as one production product, and orders with the same production product and output date are the same. For the order matrix aggregated as a group, while satisfying the load constraints of the refining process, the output frame arrangement plan is decided to determine the arrangement of the output frame to minimize the delivery delay and product inventory and expand the output lot. An input step for fetching information on order information of manufacturing varieties, information on the probability of process processing for each manufacturing varieties, and a planning policy, an order database storing step for storing order information on a plurality of manufacturing varieties, and a plurality of manufacturing methods A production model store step that stores the probability of process processing by product type, and an order matrix creation step that creates an order matrix based on the information in the order database A planning policy setting step for setting planning policy parameters, which are various conditions for performing calculation for determining the steel frame arrangement from the information on the planning policy, the order matrix, the production model, and the planning An optimization calculation step for calculating the output frame arrangement plan and the production type allocation frame by minimizing or maximizing an evaluation function related to delay in delivery, product inventory, and steel output lot expansion using policy parameters, and the output steel A steelmaking plan drafting result display step for displaying a steelmaking plan drafting result comprising a frame arrangement plan and a production type allocation frame, and a steelmaking plan drafting result registration step for registering the steelmaking plan drafting result. Features.
The program of the present invention is an order matrix in which steel product types having similar production specifications are aggregated as one production type in a steelmaking process, and orders in which the production type and the date of steel output request are the same are aggregated as the same order group. This is a program for planning a steel output frame layout that satisfies the load constraints of the finishing process, minimizes delivery delays and product inventory, and determines the steel output frame layout to expand the steel output lot. Input processing for fetching information on manufacturing type order information, process processing occurrence probability for each manufacturing type, and planning policy, order database storage processing for storing order information for a plurality of manufacturing types, and processing for each manufacturing type Production type model storage processing for storing processing occurrence probability, order matrix creation processing for creating order matrix based on information in order database, and planning Using the planning policy setting process for setting the planning policy parameters, which are various conditions in performing the calculation for determining the steel frame arrangement from the information about the needle, the order matrix, the production type model, and the planning policy parameters Optimization calculation processing for calculating the output frame arrangement plan and the production type allocation frame by minimizing or maximizing the evaluation function regarding delivery delay, product inventory, and output lot expansion, and the output frame arrangement plan and production It is characterized by causing a computer to execute a steelmaking plan drafting result display process for displaying a steelmaking plan drafting result consisting of allocation frames classified by product type and a steelmaking plan drafting result registering process for registering the steelmaking plan drafting result. To do.
The computer-readable storage medium of the present invention stores the above-described program.

  According to the present invention, varieties having similar manufacturing processes are aggregated as one cultivated varieties, and the order data is reduced in dimension by placing orders having the same varieties of production and date of request for steel production into the same order group. Furthermore, a steel frame arrangement plan was drafted on a daily basis in consideration of manufacturing evaluation indices and constraints. With these measures, it is possible to comply with the delivery date, satisfy the restrictions of the refining process, achieve the minimum inventory and the expansion of the lot, reduce the in-process of the intermediate process, and improve the production efficiency.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
First, an example of a schematic configuration of a manufacturing process of a thick steel plate (thick plate) which is a representative product in the steel industry will be described with reference to FIG. In FIG. 7, arrows indicate the flow of work in progress.

  In the converter 301, a steel output component, which is a chemical component of a steel intermediate product (molten steel) in a high-temperature molten state, is adjusted in units of, for example, about 300 tons, and the steel is discharged into a molten steel pan. The steel output unit in the converter 301 is called charge.

  The continuous casting facility 302 continuously casts the molten steel produced in the converter 301 for a plurality of charges, and then cuts it to a specified length, for example, to produce a plate-like intermediate product called a slab of about 20 tons. To do. A series of production units in the continuous casting equipment 302 is called casting. Although it depends on the manufacturing specifications, the 8 to 12 charges are manufactured as one cast.

  In the rolling equipment 303, the slab is heated and then formed to a predetermined thickness and width.

  The refining (cutting) equipment 304 cuts to the size of the custom specification, the refining (correction) equipment 305 performs correction to ensure the quality of the shape, etc., and the refining (care) equipment 306 is used to ensure the quality. Products that have undergone care and have been all processed are placed in a warehouse 307. In addition, the product cut | disconnected to the size of order specification is called a plate.

Table 1 shows an example of the size (unit) of a typical minimum production lot in each production facility of the thick plate production process. In this example, the converter 301 is about 100 times as large as 3 ton of the final product (minimum production lot in the warehouse), and the continuous production facility 302 is about 800 times larger than the final product. Manufacturing as a unit is necessary from the viewpoint of productivity and yield. However, if priority is given to the productivity and yield of converters and continuous casting machines, and if the delivery date is made up to the previous order and the production lot is increased, there is a problem that the product inventory increases. Moreover, if the production lot of a converter or a continuous casting machine is increased without considering the production load of the finishing equipment 304 to 306, it will lead to an increase in work due to concentration of the production load and an increase in the production period. That is, it is also important to level the manufacturing load in each manufacturing apparatus. As described above, it is important to devise a production plan for a continuous casting machine in which the production start timing is determined so as to satisfy the conflicting problems of expansion of the production lot, leveling of the production load, and compliance with the delivery date.

  The aim of the present invention is to satisfy the mutually conflicting requirements of expanding production lots, observing delivery dates, and leveling the manufacturing process at the same time for the unfinished steel orders that have been input. Satisfying at the same time is also an object of the present invention. In order to solve this problem, in the present invention, the types of steel materials having similar production specifications are aggregated as one production type, and orders in which the production type and the date of request for steel production coincide with each other are made the same order group. In order to simplify and reduce the order data, it will prepare a steel frame arrangement plan that satisfies the requirements such as expansion of production lots, compliance with delivery dates, and leveling of production processes.

  FIG. 1 shows a schematic configuration of the steel output frame arrangement optimizing device of the present embodiment. This steel output frame arrangement optimizing device includes an order database storage means 101, a production type model storage means 104, an order matrix creation means 102, a planning policy setting means 105, an optimization calculation means 106, a steel output plan planning result display means 107, And a steel production plan drafting result registration means 108. These functions are described in detail below.

  FIG. 2 shows a flowchart of the method for optimizing the steel frame arrangement. First, the order matrix creating means 102 reads the order information of the production type from the order database storage means 101 in which the order information of a plurality of production types is stored (step S201). The order matrix 103 is created (step S202).

  In the planning policy setting means 105, planning policy parameters that are various conditions for performing calculation for determining the steel frame arrangement from information related to the planning policy are set (step S204). More specifically, the planning policy parameter includes, for example, an upper limit value of the process capability, an optimization calculation time, an optimization calculation convergence condition, and a priority of each evaluation index. In the optimization calculation means 107, the product type model 104 read from the production type model storage means for storing the process processing occurrence probability for each product type (step S203) and the order matrix 103 read from the order matrix creation means 102 (step S203). Using the planning policy parameters read from the planning policy setting means 105, an evaluation function relating to delay in delivery, product inventory, and steel production lot expansion, and a constraint equation that expresses constraints in each process by a mathematical formula are created (step S205). Then, optimization calculation is performed by minimizing or maximizing the evaluation function by the multi-purpose mixed integer programming method (step S206), and the above-mentioned steel frame arrangement plan and the production type allocation frame are calculated. Based on the obtained solution, the steel output plan result including the steel output frame arrangement plan and the production type allocation frame is displayed by the steel output plan result display means (step S207).

  The planner checks the steelmaking plan drafting result (step S208), and if the steelmaking plan drafting result is favorable, the steelmaking plan drafting result registration means 108 registers the steelmaking plan drafting result (step S209) and ends. If the steelmaking plan planning result is not preferable, the planning policy setting unit 105 resets the planning policy and repeats the processing steps S204 to S208.

(Example)
Examples of the present invention will be described below. Table 1 shows a production model and an order matrix 103. As the product category of the production product model, three types of steel output components and four types of passing process patterns, a total of twelve types of output steel components and passing process patterns are considered. The occurrence rate of the refining process varies depending on the combination of the steel output component and the passing process pattern. For example, the production type of the steel output component A and the passage process pattern 100 (hereinafter A_100) has a gas process occurrence probability of 0.3, a correction process occurrence probability of 0.1, and a maintenance process occurrence probability of 0.1. It shows that there is. The order matrix goes back from the refining process to the lower process based on the delivery date. In addition, it is arranged in a grid of the steelmaking deadline date (row).

  The planning policy setting means 106 sets the process capability upper limit value (process load upper limit value), the optimization calculation time, the optimization calculation convergence condition, and the priority of each evaluation index. Table 2 is a table showing the process capability upper limit value which is one of the planning policy parameters.

  There is a limit to the amount of steel output, and the daily steel output S [k] on the kth day is subject to the constraints given by equation (1). Here, S_max represents the upper limit of steel capacity for one sunrise.

  Approval of production amount C [i] [k] on day k, steel output component i, and production date of day k, steel output component i, process pattern j (= 1, 2... J [i]) The sum of the frame x [i] [j] [k] and the billing surplus material β [i] [k] of the kth day and the steel output component i is expressed by the relationship of the expression (2). Here, J [i] is the number of types of process patterns of component i.

It is not necessary to start the steel as per the date of the steelmaking request in the custom matrix, and the actual steelmaking may be made in time for the steelmaking request date. A certain amount of steel at sunrise includes those for different steelmaking dates. Approval frame x [i] [j] [k] for each production type of the k-th day, the steel output component i, and the process pattern j is the manufacture of the kth day, the steel output component i, the process pattern j, and the steel output request date t It is expressed by equation (3) as the cumulative value within the planning period (K days) of the steelmaking request date allocation frame by model x _t [i] [j] [t] [k].

Since the order quantity and production quantity as a whole are balanced, within the planning period (K days), the order matrix x _r [i] [j] [t] of the steel output component i, the process pattern j, and the steel output request date t ] And the kth day, the steel output component i, and the production pattern allocation frame x [i] [j] [k] of the process pattern j are expressed by Equation (4).

  Since the process load depends on the rate of occurrence of the process, the process load y [l] [k] on the kth day and the process number l is assigned to the kth day, the steel output component i, and the process pattern j according to the production type. Relation between x [i] [j] [k] and the production type model r [i] [j] [l], which is the process occurrence rate of the steel output component i, the process pattern j, and the process number l, using equation (5) Attached. Here, I is the number of types of steel output components. In this embodiment, l = 1 represents gas processing, l = 2 represents correction processing, and l = 3 represents maintenance processing.

The lot size LOT_SIZE is determined by the amount of steel output and the number of lots. The amount of steel output C [i] [k] of the steel output component i on the kth day and the number of lots δ _L [i] of the steel output component i on the kth day. Using [k], it is related by equation (6). In this embodiment, the lot size is 200 tons.

Expression (7) represents whether or not there is a steel output of the steel output component i on the kth day. It is assumed that δ _c [i] [k] is 1 if there is steel output of the steel output component i on the kth day, and 0 if not.

  However, the maximum value of C [i] [k] is M. That is, Formula (7) formulates the following formula.

  Using the minimum interval days span [i] set for each steel type, the constraint on the planned steel output date for each steel type is expressed as in Expression (14).

  A certain number or more of devices for the refining process after the number of days achieve_day [l] set for each process l are secured. The relationship between the initial in-process stock_0, the k-th day, the in-process stock [l] [k] of the process l is expressed by Expression (15).

  The constraint equation for ensuring the safety mechanism is expressed as equation (16) using safety_stock [l].

  Constraints to produce steel at an integral multiple of the cast using the cast steel number H [i] and cast number h [i] [k] per cast unit set for each steel type are as shown in equation (17). Is done.

  Expression (18) is a constraint on the daily steel-specific steel production planned amount waku [i] [k] set by the planner.

  Next, evaluation functions (8) to (11) are defined. Equation (8) is an evaluation index that aims to minimize the amount of preceding steel and the amount of delayed steel.

However, ref [i] [j] [k] is the cumulative value Σx _t [i] [j] [t] [ q] (q = 1 to k), which is a target value and is expressed as follows.

Equation (9) is an evaluation function aimed at minimizing the difference between the total steel output S [k] on the k-th day and the steel capacity target value S _r [k] on the k-th sunrise.

  Expression (10) is an evaluation function aimed at leveling the process load, and is an evaluation function aimed at minimizing the difference between the moving average of the process load for 3 days and the process capability upper limit value.

  Equation (11) is an evaluation function aimed at minimizing bills remaining.

  Equation (12) is an evaluation function aimed at minimizing the number of dissimilar steel joints during casting.

  In addition, in order to minimize the delay in delivery date and the minimum product inventory, the delay and stock for several days before and after the date of request for steel production are acceptable, and a weight function as shown in FIG. It is given to the evaluation function for delivery date compliance. In this embodiment, a = 2, b = 5, and c = 100. This weight function is represented as W (k, t). When W (k, t) is added to Expression (8) and a weighted linear sum of Expressions (8) to (12) is taken, a comprehensive evaluation index (13) in which each index is balanced is obtained.

Here, W ₁ , W ₂ , W ₃ , W ₄ , and W ₅ are respectively for the degree of compliance with the desired date of steel production, the degree of achievement of the target amount of steel production, the level of process load level, the minimum degree of billing surplus material, and the degree of batch summary achievement Relative evaluation weight. That is, the setting of the priority of each evaluation index in the planning policy setting unit 105 is to set the evaluation weights W _{1 to} W ₅ .

In summary, optimization calculation unit 106 uses the evaluation weights W ₁ to _W-5 of the upper limit value and the evaluation index of process capability set by the order matrix 103, manufactured varieties model 104 and drafting policy setting unit 105 , Constraint equations (1) to (7) and evaluation functions (8) to (12) are created and optimized by the mixed integer programming according to the optimization calculation time and the optimization calculation convergence condition set by the planning policy setting means 105 Calculating calculation is performed, and an allocation frame x [i] [j] [k] for each production type and a steel frame C [i] [k] for each steel output component are calculated. In addition, the optimization calculation by the mixed integer programming may use a commercially available mathematical programming solver or the like as appropriate.

  Table 3 shows the steel frame for each steel output component of this example. Here, the planning period was 2 weeks. From Table 3, it can be seen that every steel output frame is an integral multiple of the lot size of 200 tons, and the steel types having the same steel output composition are collectively arranged in the steel output frame.

  In addition, Table 4 shows the appropriation frame by production type, and Table 5 shows the daily billing surplus. From Table 3, Table 4, and Table 5, it can be seen that the constraint equation (2) is satisfied.

  In FIG. 4, the process load in an Example is shown for every day. Further, FIG. 5 shows the cumulative value of the order matrix and the production type allocation frame in the embodiment. It can be seen that there is no preceding or delayed steel that deviates significantly from the date of request for steel production.

  On the other hand, Table 6 shows the surplus billing materials for each day when the steel output frames are arranged in the order of the steel output request date without using the function of the present invention. In addition, FIG. 6 shows the daily process load at that time. If Table 5 and Table 6 are compared, it is clear that Table 5 according to the present invention has fewer billing surplus materials. Also, comparing FIG. 4 with FIG. 6, it can be seen that FIG. 6 without using the present invention has many days when the process load exceeds the upper limit of the process capability, and the process load is not leveled. However, FIG. 4 using the present invention shows that the process load is generally suppressed below the upper limit value of the process capability.

  As described above, in this embodiment, the production efficiency is improved by complying with the delivery date, satisfying the restriction of the finishing process, achieving the minimum inventory and the expansion of the lot, and reducing the in-process process. be able to.

  Another object of the present invention is to supply a storage medium storing software program codes for realizing the functions of the above-described embodiments to a system or apparatus, and the computer (CPU or MPU) of the system or apparatus stores the storage medium. Needless to say, this can also be achieved by reading and executing the stored program code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) operating on the computer based on the instruction of the program code, etc. However, it is needless to say that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Further, after the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a figure showing the schematic structure of embodiment of the steel output frame arrangement | positioning optimization apparatus of this invention. It is the flowchart which showed the outline of the steel output plan planning method in embodiment of the steel output frame arrangement | positioning optimization apparatus of this invention. It is a figure for demonstrating an example of the weight function provided to the evaluation function of delivery date compliance in an optimization calculation part. It is a figure showing the process load of a present Example. It is a figure showing transition of the allocation frame classified by manufacture kind of a present Example. It is a figure showing the process load when not using this invention in a present Example. It is the schematic of an example of the thick board manufacturing process in the steel industry.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Order database storage means 102 Order matrix preparation means 103 Order matrix 104 Manufacturing kind model storage means 105 Planning policy setting means 106 Optimization calculation means 107 Steelmaking plan planning result display means 108 Steelmaking plan planning result registration means

Claims (20)

In the steelmaking process, steel products with similar production specifications are aggregated as a single production variety, and an order matrix that aggregates orders with the same production type and steel output request date as the same order group is refined. An output frame arrangement planning device that satisfies the process load constraints, minimizes delivery delays and product inventory, and determines the output frame arrangement to expand the output lot.
Input means for fetching information on order information of manufactured varieties, process processing occurrence probability by manufacturing varieties, and planning policy;
Order database storage means for storing order information of a plurality of manufactured varieties;
Manufacturing type model storage means for storing the probability of occurrence of process processing for a plurality of manufacturing types,
Order matrix creating means for creating an order matrix based on the information in the order database;
Planning policy setting means for setting planning policy parameters, which are various conditions for performing calculation to determine the steel frame arrangement from information on the planning policy,
Using the order matrix, the production type model, and the planning policy parameters, minimizing or maximizing an evaluation function regarding delivery delay, product inventory, and steel production lot expansion, the output frame arrangement plan and the allocation frame for each production type An optimization calculation means for calculating
A steelmaking plan planning result display means for displaying a steelmaking plan planning result comprising the above-mentioned steelmaking frame arrangement plan and the production type allocation frame;
A steel output frame arrangement planning device, comprising: a steel output plan result registration means for registering the steel output plan result.   2. The steel frame arrangement plan according to claim 1, wherein the load constraint of the refining process is a constraint that the moving average during a certain period of the process load does not exceed the process load upper limit value at an arbitrary time. Planning device.   3. The steel output frame arrangement planning apparatus according to claim 1, wherein the evaluation function related to the steel output lot expansion is an evaluation function aimed at minimizing the number of different steel type joints at the time of casting.   In the optimization calculation means, a delay function for several days before and after the steelmaking request date and stock is allowed, but a weight function for suppressing excessive advance and excessive delay is set from the input information, and the weight function is The steel frame arrangement planning device according to any one of claims 1 to 3, which is added to an evaluation function relating to delay in delivery and product inventory.   5. The steel output frame arrangement planning apparatus according to claim 1, wherein the optimization calculation means minimizes or maximizes the evaluation function using a multi-objective mixed integer programming method.   6. The output steel frame arrangement planning device according to any one of claims 1 to 5, wherein the optimization calculation means has, as a restriction, a minimum interval days for a steel output planned date for each steel type.   In the said optimization calculation means, it has in the restriction | limiting which ensures a certain amount of work in a refining process in arbitrary time, It has the outgoing frame arrangement | positioning plan planning apparatus of any one of Claims 1-6 characterized by the above-mentioned. .   In the said optimization calculation means, it has in the restriction | limiting that the number of daily outgoing steel cups becomes an integral multiple of a cast in arbitrary steel types, The outgoing steel frame arrangement | positioning of any one of Claims 1-7 characterized by the above-mentioned. Planning device.   9. The output frame arrangement planning device according to claim 1, wherein the optimization calculation means specifies an output steel plan amount for each daily steel type. In the steelmaking process, steel products with similar production specifications are aggregated as a single production variety, and an order matrix that aggregates orders with the same production type and steel output request date as the same order group is refined. It is a method for planning a steel output frame layout that satisfies the process load constraints, minimizes delivery delays and product inventory, and determines the steel output frame layout to expand the steel output lot.
An input step for fetching information on order information of manufactured products, process processing occurrence probability by manufacturing product, and planning policy,
An order database storage step for storing order information for a plurality of manufactured products;
A production type model storage step for storing the probability of occurrence of process processing for a plurality of production types,
An order matrix creation step for creating an order matrix based on the information in the order database;
A planning policy setting step for setting planning policy parameters, which are various conditions in performing calculation for determining the steel frame arrangement from information on the planning policy;
Using the order matrix, the production type model, and the planning policy parameters, minimizing or maximizing an evaluation function regarding delivery delay, product inventory, and steel production lot expansion, the output frame arrangement plan and the allocation frame for each production type An optimization calculation step for calculating
A steelmaking plan drafting result display step for displaying a steelmaking plan drafting result consisting of the above-mentioned steelmaking frame arrangement plan and the production type allocation frame;
A steel output frame arrangement plan planning method, comprising: a steel output plan result registration step for registering the steel output plan result.   11. The output steel frame arrangement planning according to claim 10, wherein the load constraint of the refining process is a constraint that a moving average during a certain period of the process load does not exceed a process load upper limit value at an arbitrary time. Method.   The method for planning a steel output frame arrangement according to claim 10 or 11, wherein the evaluation function relating to the steel output lot expansion is an evaluation function aimed at minimizing the number of different steel type joints during casting.   In the optimization calculation step, a delay function for several days before and after the steelmaking request date and inventory are allowed, but a weight function for suppressing excessive advance and excessive delay is set from the input information, and the weight function is The method for planning a steel frame arrangement according to any one of claims 10 to 12, which is added to an evaluation function relating to delay in delivery and product inventory.   14. The output steel frame arrangement planning method according to any one of claims 10 to 13, wherein in the optimization calculation step, the evaluation function is minimized or maximized using a multi-objective mixed integer programming method.   15. The steel output frame arrangement planning method according to any one of claims 10 to 14, wherein, in the optimization calculation step, a minimum number of interval days for a steel output planned date is constrained for each steel type.   The optimization calculation step has a constraint for securing a certain amount of work in a refining process at an arbitrary time, and the method of planning a steel output frame arrangement according to any one of claims 10 to 15 .   In the said optimization calculation step, it has in the restriction | limiting that the number of daily outgoing steel cups becomes an integral multiple of a cast in arbitrary steel types, The outgoing steel frame arrangement | positioning of any one of Claims 10-16 characterized by the above-mentioned. Planning method.   18. The steel output frame arrangement planning method according to claim 10, wherein, in the optimization calculation step, a steel output plan amount is specified for each daily steel type. In the steelmaking process, steel products with similar production specifications are aggregated as a single production variety, and an order matrix that aggregates orders with the same production type and steel output request date as the same order group is refined. A program for planning a steel output frame layout that satisfies the process load constraints, minimizes delivery delays and product inventory, and determines the steel output frame layout to expand the steel output lot.
Input processing to capture information on order information of manufactured varieties, process process occurrence probability by manufacturing varieties, and planning policy;
Order database storage processing for storing order information for multiple manufactured products,
Manufacturing type model storage processing for storing the probability of occurrence of process processing for a plurality of manufacturing types,
Order matrix creation processing for creating an order matrix based on the information in the order database;
Planning policy setting processing for setting planning policy parameters, which are various conditions for performing calculation to determine the steel frame arrangement from information on the planning policy,
Using the order matrix, the production type model, and the planning policy parameters, minimizing or maximizing an evaluation function regarding delivery delay, product inventory, and steel production lot expansion, the output frame arrangement plan and the allocation frame for each production type Optimization calculation processing to calculate
A steelmaking plan drafting result display process for displaying a steelmaking plan drafting result consisting of the above-mentioned steelmaking frame arrangement plan and the production type allocation frame;
A program for causing a computer to execute a steelmaking plan drafting result registration process for registering the steelmaking plan drafting result.   A computer-readable storage medium having recorded thereon the program according to claim 19.

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