JPH0798733A - Hierarchical production plan supporting method/device - Google Patents

Abstract

PURPOSE:To make a production plan in accordance with the real state of a production line and against the unexpected state changes. CONSTITUTION:A 1st planning means 106 makes a 1st production plan of a long period based on the production requests, and a 2nd planning means 116 makes a 2nd production plan of a short period in accordance with the state of a production line and based on the production plan made by the means 106. A plan verifying means 118 verifies the validity of the production plan made by the means 116. A limit condition/production rule generating means 119 generates the limit conditions and the production rules based on the validity of the 2nd production plan verified by the means 118. A 3rd planning means 136 makes a 3rd production plan of a shorter period and accordant better with the condition of the production line than the 2nd production plan based on the production plan made by the means 116 and also on the limit conditions and the production rules acquired by the means 119.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is useful for making a production plan for determining the order of producing products in a production line.
The present invention relates to a hierarchical production plan support method and apparatus for supporting a production plan well adapted to a production line.

[0002]

2. Description of the Related Art In recent years, when a production planning support device is adopted,
Since it is possible to quickly formulate an appropriate production plan that adapts to the actual conditions of the production line, and it is easy to respond to sudden changes in production requirements, changes in production equipment, etc. Has started to be put into practical use.

Further, in order to cope with the production of products having more complicated production processes, a hierarchical production planning support apparatus in which a plurality of production planning support apparatuses are connected subordinately has been studied.

An example of a conventional production planning support device will be described below with reference to the drawings.

FIG. 2 shows the main components of the former production planning support device. The production plan support apparatus includes a production request storage unit 200 that stores a production request submitted from a sales department, a production status storage unit 210 that stores the latest production progress status of a production line, and a production apparatus. And a constraint condition storage means 220 for storing constraint conditions such as processing capacity and working hours of workers, and a production rule storage means 230 for storing production rules such as processing a lot having a high priority first. The production request stored in the production request storage unit 200, the production status stored in the production status storage unit 210, the constraint condition stored in the constraint condition storage unit 220, and the production rule storage unit 230. It is provided with a drafting means 240 for drafting a production plan based on the existing production rules, and a production plan display means 250 for displaying the production plan drafted by the drafting means 240.

The operation of the production planning support system configured as described above will be described below.

First, a production request which is the basis of a production plan is input to the production request storage means 200. Next, the latest production progress status is taken out from a production status collection device or the like (not shown), and the taken production progress status is stored in the production status storage means 210.

The planning means 240 is a production request storage means 20.
0, production status storage means 210, constraint condition storage means 220
Further, each piece of information is read out from the production rule storage means 230, and the product lot is allocated to the production apparatus which can be used at each time point while sequentially advancing the internal time from the time point when the information is read out. When the internal time advances to the end of the planning period or when there are no more product lots to be processed, the planning means 240 finishes the allocation and outputs the planned production plan to the production plan display means 250.

FIG. 3 shows a schematic configuration of the latter hierarchical production planning support device. The hierarchical production planning support apparatus includes a first production planning support apparatus 300 and a second production planning support apparatus 31 each having a configuration similar to that shown in FIG.
0 is connected in cascade. In the first production support device 300 and the second production planning support device 310, some of the constraint conditions stored in the constraint condition storage means 220 and the production rules stored in the production rule storage means 230 are Different from each other.

The operation of the hierarchical production planning support apparatus constructed as described above will be described below.

First, the first production planning support device 300
A production plan is created by the same method as the production plan support device shown in FIG. However, the first production planning support device 300
In, the constraints and production rules are set rather loosely, and a rough production plan is made. For example, when and how many products should be produced in the next one month.

Next, the production plan drafted by the first production plan support apparatus 300 is input to the production request storage means 200 of the second production plan support apparatus 310, and the second production plan support apparatus 310 A production plan is drafted by the same method as the production plan support device shown in FIG. In the second production planning support device 310, more detailed constraint conditions and production rules are set, and it is planned to the extent that which lot is to be processed by which device and when. Since the hierarchical production planning support device can set the constraint conditions and the production rules in detail by connecting the production planning support device in two layers, it is necessary to make more detailed and accurate planning than the production planning support device shown in FIG. Is easy. Similarly, the production planning support device shown in FIG. 2 can be connected in three layers.

[0013]

However, with the above configuration, it is difficult to draw up a production plan that accurately corresponds to the actual conditions of the production line. For example, at the present time, one production device can be processed, and there is a first product lot to be processed by the one production device,
It takes 2 hours for this process. Then, if there is a case where a second product lot that can be simultaneously processed quantitatively with the first product lot under the same processing conditions as the first product lot arrives after 5 minutes, the worker at the work site If so, wait 5 minutes and then process both at the same time.
Two product lots can be processed in 2 hours and 5 minutes.

However, according to the conventional production planning support device, it is planned that the first product lot is processed by one production device and the second product lot is processed two hours later. If the contents of the plan are made to be the same as the judgment of the site, the first plan of processing the first product lot once planned is canceled and the first product lot and the second product lot are processed simultaneously. It is necessary to re-create the plan of 2. In this case, since the first plan and the second plan need to be drafted separately, the drafting time is simply calculated and takes twice as long.

The planning time of the conventional production planning support device is about 3
If it takes about 0 minutes, it will take about 1 before the second plan is made.
It takes time. If planning takes an hour, the situation at the site may have changed during that time. For example, in one hour, the production equipment may break down, and even after one hour, the second product lot may not be reallocated 5 minutes after the first product lot. It is possible that the second plan will be in vain.

Due to the above-mentioned circumstances, the conventional production planning support apparatus has a problem that it is not always possible to make a production plan that accurately corresponds to the actual situation of the production line.

In view of the above, the present invention provides a hierarchical production planning support apparatus capable of drafting a flexible production plan that corresponds to the actual situation of a production line, is accurate, and can cope with sudden situation changes. That is the purpose.

[0018]

In order to achieve the above object, the present invention hierarchizes a production planning support method, and the upper layer production plan prepared in the upper layer design planning supporting step is set in the lower layer design planning supporting step. It is to revise and re-create the lower layer production plan that better corresponds to the situation of the production line.

[0019] Specifically, the solution means taken by the invention of claim 1 is a method for supporting a hierarchical production plan according to a first requirement based on a production request.
First planning process for planning the production plan of the first and the first planning process based on the first production plan planned in the first planning process.
Second planning process for drafting a second production plan that better responds to the situation of the production line than the production plan of No. 2, and verification for verifying the validity of the second production plan drafted in the second planning process A process, a generation process for generating at least one of a constraint condition and a production rule based on the validity of the second production plan verified in the verification process, and a second process planned in the second planning process. A third production plan that better corresponds to the situation of the production line than the second production plan, based on the production plan and the at least one of the constraint condition and the production rule generated in the generation step. And a planning process.

According to a second aspect of the present invention, in addition to the structure of the first aspect, a verification step for verifying the validity of the third production plan prepared in the third planning step, and a verification step verified in the verification step. 3. A generation process for generating at least one of a constraint condition and a production rule based on the adequacy of the production plan of No. 3, drafting the production plan until the adequacy of the production plan is satisfied, and verification of the adequacy of the production plan. And a step of repeatedly generating at least one of the constraint condition and the production rule, respectively.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the second production plan drafted in the second drafting step is the first production drafted in the first drafting step. A configuration is added in which the plan is repeatedly drafted every part of the planning period.

According to a fourth aspect of the present invention, in the structure of the first to third aspects, at least one of the first to third planning steps is a planning step for multi-stage planning of a production plan. Is added.

According to a fifth aspect of the present invention, based on the configuration of the first to fourth aspects, a storage process for storing the latest production status of the production line and the latest production status of the production line stored in the storage process are used. The configuration further includes a correction step of correcting at least one of the first to third production plans drafted in the first to third drafting steps.

According to the invention of claim 6, the production plan support method is hierarchized, and the upper layer production plan prepared in the upper layer design plan support step is corrected in the lower layer design plan support step to better correspond to the situation of the production line. In addition, the lower-layer production plan whose planning period is shorter than that of the upper-layer production plan is re-created.

Specifically, the solution means taken by the invention of claim 6 is that the hierarchical design planning support method is the first based on the production request.
A first production process for producing a production plan of the above, a storage process for storing the latest production status of the production line, and a first production plan produced in the first production process are stored in the storage process. A second drafting step of repeatedly drafting a second production plan for every part of the planning period of the first production plan while making corrections based on the latest production status of the production line; Verification step for verifying the validity of the second production plan drafted in the planning step, and at least one of a constraint condition and a production rule based on the validity of the second production plan verified in the validation step And a second production plan created in the second planning step are modified based on at least one of the constraint condition and the production rule created in the creating step to generate a third production plan. It is an arrangement and a third planning step of planning the production schedule.

According to the invention of claim 7, in the structure of claim 6, the third production plan prepared in the third planning step is modified based on the latest production status of the production line stored in the storing step. In addition, a configuration in which the correction process is further provided is added.

An eighth aspect of the present invention is a hierarchical design support apparatus used in the first aspect of the invention, and specifically, a first drafting means for drafting a first production plan based on a production request,
Second drafting means for drafting a second production plan that better corresponds to the situation of the production line than the first production plan based on the first production plan drafted by the first drafting means; and the second drafting means. Verification means for verifying the validity of the second production plan prepared by the planning means, and at least one of the constraint condition and the production rule based on the validity of the second production plan verified by the verification means. Based on the second production plan created by the second drafting means and at least one of the constraint condition and the production rule created by the creating means. A third planning means for planning a third production plan that better corresponds to the situation is provided.

According to a ninth aspect of the present invention, in addition to the structure of the eighth aspect, a verifying means for verifying the validity of the third production plan drafted by the third drafting means, and a third means verified by the verifying means.
Means for generating at least one of a constraint condition and a production rule based on the adequacy of the production plan, a production plan is drafted until the adequacy of the production plan is satisfied, and the adequacy of the production plan is verified. The configuration further includes means for repeatedly generating at least one of the constraint condition and the production rule.

The present invention of claim 10 is the addition of the structure of claim 8 or 9 to the structure in which the first planning means and the second planning means are the same means.

According to the invention of claim 11, in addition to the structure of claims 8 to 10, the second planning means and the third planning means are the same means.

According to an eleventh aspect of the present invention, in the structure of the eighth to tenth aspects, the second production plan drafted by the second drafting means is the first production plan drafted by the first drafting means. A configuration is added in which the planning is repeated every part of the planning period.

According to a twelfth aspect of the present invention, in the structure of the eighth to eleventh aspects, the second production plan drafted by the second drafting means is the first production plan drafted by the first drafting means. A configuration is added in which the planning is repeated every part of the planning period.

According to a thirteenth aspect of the present invention, there is provided the structure according to the eighth to twelfth aspects, wherein at least one of the first to third planning means is provided.
One is to add a configuration in which the units are connected in a multi-stage manner and each of them comprises a plurality of planning means for planning a production plan.

According to a fourteenth aspect of the present invention, based on the configuration of the eighth to thirteenth aspects, based on the storage means for storing the latest production status of the production line and the latest production status of the production line stored in the storage means. The first to be drafted by the first to third drafting means
-The structure which adds the correction means which corrects at least one of the 3rd production plans is added.

A fifteenth aspect of the present invention is a hierarchical production planning support apparatus used in the sixth aspect of the invention, and specifically, a first drafting means for drafting a first production plan based on a production request. A storage means for storing the latest production status of the production line and a first production plan prepared by the first planning means based on the latest production status of the production line stored in the storage step. A second production means for repeatedly producing a second production plan for every part of the production period of the first production plan; and a second production plan produced by the second production means. The verification means for verifying the validity, the generation means for generating at least one of the constraint condition and the production rule based on the validity of the second production plan verified by the verification means, and the second drafting means. Before the second production plan that was planned Third and modified based on at least one of the generating means has generated constraints and production rules
And a third planning means for planning the production plan.

According to a sixteenth aspect of the invention, in the structure of the fifteenth aspect, the third production plan prepared by the third planning means is corrected based on the latest production status of the production line stored in the storage means. The configuration in which the correction means is further provided is added.

The invention of claim 17 is the invention of claim 15 or 16.
In addition to the above configuration, a configuration in which the first planning means and the second planning means are the same means is added.

According to the eighteenth aspect of the present invention, in addition to the configurations of the fifteenth to seventeenth aspects, the second planning means and the third planning means are the same means.

[0039]

According to the structure of the invention of claim 1 or 8, the second production plan corresponds better to the situation of the production line than the first production plan. Further, since the third production plan is drafted based on the second production plan and at least one of the constraint condition and the production rule generated by examining the validity of the second production plan, It is possible to capture the situation newly generated in the production line, so it is possible to cope with the situation in the production line.

According to the configuration of claim 2 or 9, one of the production plan, the verification of the validity of the production plan, the constraint condition and the production rule until the validity of the production plan is satisfied.
The final production plan corresponds to the actual situation of the production line infinitely because the three generations are repeated.

According to the third or the twelfth aspect of the invention, the second production plan is repeatedly prepared for every part of the planning period of the first production plan, so that the second production plan is the minimum required. Planning can be done only during the limited planning period.

According to the structure of claim 4 or 13, the production plan is prepared in a multistage manner, so that the constraint condition and the production rule can be set finely.

According to the fifth, seventh, fourteenth or sixteenth aspect, the production plan can be revised based on the latest production status of the production line.

According to the structure of claim 6 or 15, the second production plan is a planning period shorter than the planning period of the first production plan while correcting the first production plan based on the latest production status of the production line. Since the plan is repeated every time, it is possible to surely capture the situation newly generated in the production line and to make the plan only within the minimum necessary planning period. Further, since the third production plan is drafted based on the second production plan and at least one of the constraint condition and the production rule generated by examining the validity of the second production plan, It corresponds better to the actual situation of the production line than the second production plan.

According to the structure of claim 10 or 17, it is possible to share the first planning means and the second planning means.

According to the eleventh or eighteenth aspect, the second planning means and the third planning means can be shared.

[0047]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A hierarchical production planning support apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a hierarchical production planning support apparatus according to an embodiment of the present invention. The hierarchical production planning support device is a first production plan for a long-term first production plan.
The planning unit 100 and the second planning unit that reads the production plan drafted by the first drafting unit 100 at short intervals, verifies the production plan, and drafts a second production plan that better corresponds to the situation of the production line. 110, and a third plan for preparing a third production plan for instructing a setup that can be actually processed by comparing the second production plan prepared by the second planning unit 110 with the current situation of the production line. And a unit 130.

The first planning unit 100 stores the first production request storage means 10 for storing the production request submitted by the sales department or the like.
1 and a first constraint condition storage means 102 that stores constraint conditions such as the processing capacity of the production apparatus and the working hours of workers,
A first production rule storage unit 103 that stores a production rule such as processing a lot with a high priority first, and a constraint condition and a first production rule stored in the first constraint condition storage unit 102. First condition editing means 104 for respectively editing the production rules stored in the storage means 103, first production status storage means 107 for storing the latest production progress status of the production line, and the production request described above. , Constraints,
First drafting means 106 for drafting a first production plan based on the production rule and the production progress status, and the first drafting means 1
The first planning control means 105 for controlling 06.

The second planning unit 110 stores the second production request storage means 111 that stores the production request, the second constraint condition storage means 112 that stores the constraint condition, and the production rule. The second production rule storage means 113,
The second condition editing means 114 for editing the constraint condition and the production rule, the second production situation storage means 117 for storing the production progress situation, the production request, the constraint condition,
Second drafting means 116 for drafting a second production plan based on the production rule and the production progress status, and the second drafting means 1
The second planning control means 115 for controlling 16; the second production requirement display means 121 for displaying the contents of the second production requirement storage means 111; and the second production requirement display means 121 for the second production requirement display means 121. Planning editing means 122 for editing the contents of the production request storage means 111, and planning verification means 11 for verifying the validity of the second production plan prepared by the second planning means 116.
8 and.

The third planning unit 130 has a third production request storage means 131 for storing the production request, a third production status storage means 137 for storing the production progress status, and the above-mentioned production request. And a third drafting means 136 for drafting a final third production plan based on the production progress status, a display requesting means 135 for issuing a display request for the third production plan to the third drafting means 136, and the display. It comprises a third plan display means 141 for displaying the third production plan prepared by the third planning means 136 when there is a display request from the request means 135.

The operation of the hierarchical production planning support apparatus configured as described above will be described below.

The first planning unit 100 makes a long-term first production plan. Here, it is assumed that a production plan is planned over a one-week planning period.

The flow information of the production process of the product to be newly input is input to the first production request storage means 101. It is assumed that the flow information of the product currently in process has already been entered. The first constraint condition storage means 102 stores in advance constraint conditions such as the processing capacity of the production apparatus and the working hours of workers, and the first production rule storage means 103 stores in advance how to determine the priority order of product lots. The production rules are stored. These contents can be edited by the first condition editing means 104. When a planning start command is issued from the first planning control means 105, the first planning means 106 fetches the latest product lot processing record and the operating status of the production apparatus in the production line from the first production status storage means 107. , The first constraint condition storage means 102 and the first production rule storage means 1
While reading out the constraint condition and the production rule stored in 03, the first production plan is drafted by the following procedure by the product lot-oriented queuing method.

First, the internal time of the first planning means 106 is reset. Next, each product lot currently waiting for processing is classified for each production device in which it is to be processed, and then the product lots assigned to that production device are rearranged in order of priority according to the production rules. Next, if the production device is in a processable state, the product lot having the first priority is assigned to the production device. When this allocation process is completed for all production devices, the first planning means 1
The internal time of 06 is advanced by 1 minute. Such an operation is repeated until after one week, that is, after 10080 minutes. The first production plan is created by the above procedure.

Next, the first production plan is set to the second planning unit 110.
To the second production request storage means 111. The contents of the second production request storage means 111 can be edited by the plan editing means 122 while looking at the second production request display means 121, and a plan that does not meet the wishes of the production line is made in the first production plan. If so, it can be corrected manually. The second constraint condition storage means 112 and the second production rule storage means 113 respectively store more detailed constraint conditions and production rules than those of the first constraint condition storage means 102 and the first production rule storage means 103. There is. For example, since the first production device and the second production device are operated by the same operator, it is impossible to start using the other production device for 10 minutes immediately after starting the use of one production device, or In some production devices, the second process can be continued after the first process,
The contents that the switching work time of 20 minutes is required for performing the third process after the process of 1 are stored. These contents can be edited by the second condition editing means 114.

The second drafting means 116 is automatically activated every hour by a drafting start command issued from the second drafting control means 115, and the following procedure is automatically repeated to make a product lot oriented. Develop a second production plan using a queuing method.

First, when a planning start command is issued from the second planning control means 115, the second planning means 116 causes the second production status storage means 117 to output the latest product lot processing results in the production line and the operation of the production apparatus. Capture the situation. The internal time of the second planning means 116 is set to the first planning means 106.
After resetting so as to match the internal time of, the product lot is allocated to the production device according to the constraint condition and the production rule. The second production plan is interrupted when the internal time reaches 60 minutes.

At this stage, the second production plan is handed over to the planning verification means 118, and the planning verification means 118 examines the adequacy of the second production plan. If there is a lot or the like that can be processed simultaneously by waiting for 5 minutes, which is a problem in the conventional production planning support apparatus, such a phenomenon is detected by the planning verification means 118. The detected event is generated as a new constraint condition or production rule by the constraint and rule generation means 119, and the generated constraint condition or production rule is the second constraint condition storage means 112 or the second production rule storage means 113. It is treated the same as the information stored in. When the new constraint condition or the production rule is generated, the second planning control means 115 is notified that the new constraint condition or the production rule is generated. The second planning control means 115 issues a planning start command to the second planning means 116.
The second planning unit 116 then starts planning again. At this time, the constraint condition or the production rule stored in the constraint condition and rule generation unit 119 is also the second drafting unit 1.
16 is read.

Until the validity of the production plan is satisfied, the production plan is drafted, the validity of the production plan is verified, and the constraint condition or the production rule is generated. If the validity of the production plan is not satisfied even after repeating three times, the constraint condition or the production rule generation is forcibly terminated at that point. This is because even if the validity of the constraint conditions and the production rules are not completely satisfied, a sufficiently valid production plan can be obtained by repeating the plan about three times.

The second production plan is formulated as described above. Since the planning period of the second production plan is limited to 60 minutes, even if the planning of the production plan, the verification of the validity of the production plan and the generation of the constraint condition or the production rule are repeated three times, the planning time is only a few minutes. is there. This second production plan is designed by taking in the events that actually occur in the production line, so that it is possible to flexibly respond to the actual situation and sudden matters at the site.

In general, the second production plan is sufficient, but it was modified every hour shorter than one hour in order to instruct the setup on a certain production device in the production line. Since there are times when I want a production plan, the third planning department 1
Equipped with 30.

The second draft made by the second drafting section 110.
Is transferred to the third production request storage means 131 of the third planning unit 130. In the third planning unit 130, the worker issues a display request to the third planning unit 136 through the display requesting unit 135 when he wants to see the setup instruction.
When the display request is issued, the third planning means 136 loads the latest production lot processing record of the production line and the operating status of the production device into the third production status storage means 137.

Next, the information of the product lot to be processed by the device for which the display request is issued is extracted from the second planning plan stored in the third production request storage means 131. The latest product lot processing record stored in the third production status storage means 137 is compared with the operating status of the production apparatus, and the processing cannot be performed due to reasons such as non-arrival or failure of the production apparatus in the subsequent process. Third plan display means 141 according to the order in which product lots are removed and processable product lots are processed.
To display.

Through the series of processes described above, it is possible to support the drafting of a production plan having flexibility according to the actual situation of the production line.

In this embodiment, the first planning means 10
6 and the second planning means 116 are prepared respectively, but these may be one means. Similarly, the third planning means 136 and the first planning means 106 or the second planning means 1
16 and 16 may be one means. However, in these cases, the content of the constraint condition and the production rule differs depending on which layer of the production plan is to be drafted, so it is necessary to prepare a means for switching the constraint condition and the production rule. is there.

Similarly, each of the first, second and third production status storage means 107, 117 and 137 may be a single means, but one of the first and second production sections is in the process of making a plan.
Alternatively, it is necessary to consider that the contents of the third production status storage means 107, 117, 137 cannot be rewritten without permission.

First and second condition editing means 104, 11
4 may not be provided if not necessary. Further, the drafting editing means 122 may be provided in the first drafting unit 100 or the third drafting unit 130 instead of the second drafting unit 110, or the first drafting unit 100, the second drafting unit 110, and the third drafting unit. It may be provided in a plurality of units 130.

Further, in the above-mentioned embodiment, the planning in the first planning means 106 and the second planning means 116 is carried out by the product lot-oriented queuing method. Other techniques such as the production device oriented queuing technique may be used or different techniques may be combined. Furthermore, it is also possible to switch to a method that has characteristics that match the switching of production types.

Further, in the above-described embodiment, the constraint condition and the production rule are treated separately, but either one of the constraint condition and the production rule may be used, or all the conditions may be integrated into the constraint condition or the production rule. It is also possible to do so.

Further, in the above-mentioned embodiment, the case where the number of layers of the hierarchy is three layers is shown, but even two layers can be expected to have a sufficient effect, and the accuracy and flexibility of the production plan can be improved by using four layers or more. Can be further improved.

The first, second and third planning means 10 are also provided.
If at least one of 6, 116, 136 is a multistage planning means composed of a plurality of planning means connected in a multistage manner, further improvement in accuracy and flexibility can be expected. For example, the merits of each planning method can be combined by combining a plurality of planning execution means according to different planning methods, or a rough production plan is prepared by the first-stage planning means, and then the production plan is prepared. By supplementing with the second and subsequent planning means, highly accurate planning can be achieved in a short time.

Further, in the above embodiment, the planning period of the first production plan is one week and the planning period of the second production plan is one hour. Instead of this, the planning period of the first production plan is set. Planning period is one month, planning period of the second production plan is one week, planning period of the first production plan is one month, planning period of the second production plan is one day, etc. The period can be set freely. However, it is preferable that the planning period of the second production plan is the same as or shorter than the production plan of the first production plan.

Furthermore, although the first planning unit 100 is manually activated and the second planning unit 110 is automatically activated, any of the planning units may be manually activated or automatically activated.

[0075]

According to the hierarchical production planning support method or apparatus according to the invention of claim 1 or 8, the second production plan is the first production plan.
The production schedule corresponds better to the situation of the production line than the production schedule of the second production plan, and the third production plan is the second production plan and the constraint condition and the production rule generated by examining the validity of the second production plan. It has been re-planned based on at least one of the above, and it is possible to capture a newly generated situation in the production line, so that the situation of the production line is better dealt with.

Therefore, according to the invention of claim 1 or 8, it is possible to make a production plan that responds well to the actual situation of the production line and flexibly responds to sudden situational changes occurring in the production line. .

According to the hierarchical production planning support method or apparatus of the second or ninth aspect of the present invention, the production plan is drafted, the validity of the production plan is verified, and the constraint conditions are satisfied until the validity of the production plan is satisfied. Since one of the production rules is repeatedly generated, the final production plan corresponds to the actual situation of the production line as much as possible, so that a production plan that satisfies the validity of the production line as much as possible can be drafted. .

According to the hierarchical production planning support method or apparatus according to the invention of claim 3 or 12, the second production plan is the first production plan.
The second production plan can be drafted only for the minimum necessary planning period because it is repeatedly drafted every part of the planning period of A production plan can be planned in a short time.

According to the hierarchical production planning support method or apparatus according to the invention of claim 4 or 13, since the production plan is planned in a multi-stage manner, the constraint condition and the production rule can be set finely, and therefore more detailed You can make an accurate production plan.

According to the hierarchical production planning support method or apparatus according to the invention of claim 5, 7, 14 or 16, the production plan can be revised based on the latest production status of the production line. Since it is possible to reliably capture the situation that has occurred, it is possible to make a production plan that better corresponds to the situation of the production line.

According to the hierarchical production planning support method or apparatus of the sixth or fifteenth aspect of the present invention, the third production planning can surely capture the situation newly generated in the production line, and has the minimum necessary amount. It is re-planned based on the second production plan that can be drafted only during the planning period and at least one of the constraint condition and the production rule generated by examining the adequacy of the second production plan. Therefore, it is possible to quickly draft a production plan that responds well to the actual situation of the production line and flexibly responds to sudden changes in the situation that occur in the production line.

According to the hierarchical production planning support apparatus of the tenth, eleventh, seventeenth or eighteenth aspect of the present invention, since the planning means can be shared, the cost of the hierarchical production planning support apparatus can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a hierarchical production planning support apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a main part of a conventional production planning support device.

FIG. 3 is a schematic configuration diagram of a conventional hierarchical production planning support device.

[Explanation of symbols]

 100 First Planning Unit 101 First Production Request Storage Means 102 First Constraint Condition Storage Means 103 First Production Rule Storage Means 104 First Condition Editing Means 105 First Planning Control Means 106 First Planning Means 107 First production status storage means 110 Second drafting section 111 Second production request storage means 112 Second constraint condition storage means 113 Second production rule storage means 114 Second condition editing means 115 Second drafting control means 116 Second Planning Means 117 Second Production Status Storage Means 118 Planning Verification Means 119 Constraints and Rule Generation Means 121 Second Production Request Display Means 122 Planning Editing Means 130 Third Planning Department 131 Third Production Request Storage Means 135 Display Request Means 136 Third Planning Means 137 Third Production Status Storage Means 141 Third Plan Display Means

Claims (18)

[Claims] 1. A first drafting process for drafting a first production plan based on a production request, and a production more than the first production plan based on the first production plan drafted in the first drafting process. A second drafting process for drafting a second production plan that better corresponds to the situation of the line, a verification process for verifying the validity of the second production plan drafted in the second planning process, and the verification process And a generation step of generating at least one of a constraint condition and a production rule based on the validity of the second production plan verified in 1., a second production plan formulated in the second planning step, and the generation. A third production plan that better corresponds to the situation of the production line than the second production plan based on at least one of the constraint condition and the production rule generated in the process
And a planning process, the hierarchical production planning support method. 2. A verification process for verifying the validity of the third production plan drafted in the third planning process, and constraint conditions based on the validity of the third production plan verified in the validation process. A generation process for generating at least one of the production rules, a production plan is drafted until the adequacy of the production plan is satisfied, the adequacy of the production plan is verified, and at least one of a constraint condition and a production rule. The hierarchical production planning support method according to claim 1, further comprising a step of repeatedly performing generation. 3. The second production plan drafted in the second drafting step is set for every part of the planning periods of the first production plan drafted in the first drafting step. The hierarchical production planning support method according to claim 1 or 2, wherein the method is repeatedly drafted. 4. The method according to claim 1, wherein at least one of the first to third planning steps is a planning step for planning a production plan in multiple stages. The hierarchical production planning support method described. 5. A storage step of storing the latest production status of the production line, and a first step made in the first to third planning steps based on the latest production status of the production line stored in the storage step. 5. The hierarchical production planning support method according to claim 1, further comprising a correction step of correcting at least one of the first to third production plans. 6. A first planning process for formulating a first production plan based on a production request, a storage process for storing the latest production status of a production line, and a first planning process in the first planning process. While revising the production plan according to the latest production status of the production line stored in the storage step, and repeatedly preparing the second production plan for every part of the planning period of the first production plan. A second planning process
A verification process for verifying the validity of the second production plan designed in the second planning process, and a constraint condition and a production rule based on the validity of the second production plan verified in the verification process. A generation step of generating at least one, and a second production plan prepared in the second planning step, which is modified based on at least one of the constraint condition and the production rule generated in the generation step. Three
And a third drafting process for drafting a production plan of the above. 7. The method further comprises a correction step of correcting the third production plan prepared in the third planning step based on the latest production status of the production line stored in the storage step. The hierarchical production planning support method according to claim 6. 8. A first production means for producing a first production plan based on a production request, and a production line more than the first production plan based on the first production plan produced by the first production means. Second planning means for better responding to the situation of [2], verification means for verifying the adequacy of the second production plan prepared by the second planning means, and verification by the verification means. Generating means for generating at least one of the constraint condition and the production rule based on the adequacy of the second production plan, the second production plan prepared by the second planning means, and the generating means. And a third drafting means for drafting a third production plan that better corresponds to the situation of the production line than the second production plan based on at least one of the constraint condition and the production rule. Hierarchical production planning support apparatus. 9. The verification means for verifying the validity of the third production plan prepared by the third planning means, and the constraint condition and the production based on the validity of the third production plan verified by the verification means. Generating means for generating at least one of the rules, planning of the production plan until the adequacy of the production plan is satisfied, verification of adequacy of the production plan, and generation of at least one of constraint conditions and production rules 9. The hierarchical production planning support apparatus according to claim 8, further comprising means for repeatedly performing each of the above. 10. The hierarchical production planning support apparatus according to claim 8, wherein the first planning means and the second planning means are the same means. 11. A method according to claim 8, wherein the second planning means and the third planning means are the same means.
10. The hierarchical production planning support device described in any one of 10. 12. The second production plan drafted by the second drafting means is repeatedly drafted every some planning period of the planning period of the first production plan drafted by the first planning means. The method according to any one of claims 8 to 11, characterized in that
The hierarchical production planning support device described in the item. 13. The method according to claim 8, wherein at least one of the first to third planning means is a planning means for planning a production plan in a multi-stage manner. The hierarchical production planning support method described. 14. A storage means for storing the latest production status of the production line, and a first means for making a plan by the first to third planning means based on the latest production status of the production line stored in the storage means. The hierarchical production planning support method according to any one of claims 8 to 13, further comprising: a correcting unit that corrects at least one of the third production plans. 15. A first drafting means for drafting a first production plan based on a production request, a storage means for storing the latest production status of the production line, and a first drafting means for the first drafting means. While revising the production plan according to the latest production status of the production line stored in the storage step, and repeatedly preparing the second production plan for every part of the planning period of the first production plan. And a verification means for verifying the validity of the second production plan prepared by the second planning means, and a constraint condition based on the validity of the second production plan verified by the verification means. And a production means for producing at least one of the production rules, and a second production plan drafted by the second drafting means based on at least one of the constraint condition and the production rule produced by the production means. Correct and third And a third drafting means for drafting the production plan. 16. The method according to claim 16, further comprising a correcting means for correcting the third production plan prepared by the third planning means based on the latest production status of the production line stored in the storage means. 16. The hierarchical production planning support apparatus according to claim 15. 17. The first drafting means and the second drafting means are the same means.
Or the hierarchical production planning support apparatus described in 16. 18. The method according to claim 15, wherein the second planning means and the third planning means are the same means.
The hierarchical production planning support apparatus according to any one of items 1 to 17.