JP3466750B2 - Dynamic scheduling method and system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic scheduling method and system for rescheduling production in response to changes in the production system.

[0002]

2. Description of the Related Art In conventional scheduling of a production system, for example, as in Japanese Patent Laid-Open No. 61-214956, a machine condition file containing data on whether or not machining is possible at the current time is provided for each machine tool. From this machine condition file, it is determined whether or not the machine tool to be scheduled is in a machinable state, and if it is in a machinable state, scheduling is performed so that the machine tool executes machining of a part.

[0003]

However, in the above-mentioned conventional example, since the scheduling takes a finite time, the machine tool that could be machined at the start of the scheduling cannot be machined due to a failure during the scheduling. In such cases, the schedule becomes invalid. That is, a schedule that cannot be executed by the production system is instructed.

[0004] The present invention removes the conventional disadvantages, scale
By monitoring the changes in the operating status of the production system equipment from the start of the schedule creation to the completion of the schedule creation and rescheduling, the production system is in charge of productivity improvement and schedule creation by instructing the production system of a truly effective schedule. Provided is a dynamic scheduling method and a system therefor which can reduce the number of users. The present invention is
Schedule creation is completed from the start of schedule creation by taking the time required for schedule creation into consideration
Provided are a dynamic scheduling method and a system for appropriately handling changes in a production system that occur over time .

According to the present invention, a schedule is created from the start of schedule creation.
Set of production system that generates the schedule creation completion o'clock
Provided is a dynamic scheduling method and system for performing rescheduling or inquiring about rescheduling in response to changes in equipment operating conditions . The present invention further provides a dynamic scheduling method and system for preventing unnecessary rescheduling by determining whether or not a schedule needs to be created before performing rescheduling.

[0006]

In order to solve such a problem, the dynamic scheduling system of the present invention.
This scheduling method is a dynamics method that reschedules production when an error occurs between the preset schedule of the production system and the actual production .
In a scheduling method for a scheduling system, a scheduling step for creating a schedule for the production system ,
In the processor of the dynamic scheduling system
Store the equipment operation status of the production system in the storage means
When the storage process and the schedule creation are completed ,
The production system at the start of schedule creation from the storage means
Read the equipment operation status of the system, and in the processor,
Operation of production system equipment when the schedule is created
In contrast to the situation, a monitoring step of monitoring changes in capacity utilization status of the production system, the monitoring results at the monitoring step, scan
In the case of showing a change in the facility operation status of the production system between the start and the end of schedule creation , the processor
And a decision step of deciding to perform rescheduling.

Here, in the determining step, when the monitoring result in the monitoring step does not indicate a change in the equipment operating condition of the production system, the processor follows the schedule created in the scheduling step. And decide to process. Further, in the determination step,
If the result of monitoring by said monitoring step indicates a change in the capacity utilization status of the facility operation from equipment failure of the production system, before
It is determined that the processor inquires of the operator whether to reschedule or perform machining according to the schedule created in the scheduling step. Further, the processor further comprises a scheduling start determination step of determining whether or not the schedule needs to be created, and when the scheduling start determination step determines that the schedule has to be created, the scheduling step creates the schedule. . Further, in the scheduling start determination step, it is determined whether or not the schedule needs to be created based on the change in the production performance of the production system and the change in the equipment operation. Further, in the scheduling start determination step, it is determined whether a schedule needs to be created based on a determination condition including any one of a processing delay time, a processing advance time, and equipment failure of the production system.

Further, the dynamic scheduling system of the present invention is a dynamic scheduling system for rescheduling production when an error occurs between a preset schedule of a production system and a production record, A scheduling means for creating a schedule, a monitoring means for monitoring a change in the facility operation status of the production system from the start of the schedule creation to the completion of the schedule creation, and a monitoring result of the monitoring means is a change in the facility operation status of the production system. In the case of, the determination means for determining rescheduling is included.

Here, the judging means further follows the schedule created by the scheduling means when the monitoring result of the monitoring means does not indicate a change in the equipment operating condition of the production system. And decide to process. Further, the determination means is further configured such that the monitoring result of the monitoring means indicates that the equipment operation status is from the equipment failure of the production system to equipment operation.
When the situation changes, it is determined to inquire of the operator whether to reschedule or perform processing according to the schedule created by the scheduling means. Further, the apparatus further comprises a scheduling start determining means for determining whether or not the schedule needs to be created. When the scheduling start determining means determines that the schedule has to be created, the scheduling means creates the schedule. Also, the schedule
Ring start determination means changes in the production performance of the production system
And need to create a schedule based on changes in equipment operation
Or not . Also, the scheduling start judgment
When the processing means delays or advances processing in the production system
Based on the judgment condition including any one of the equipment failure,
Determine whether a schedule needs to be created .

[0010]

[0011]

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. <Example of Hardware Configuration> FIG. 1 is a block diagram for explaining the dynamic scheduling system of the present embodiment.

In FIG. 1, reference numeral 113 is a host computer, for example, a production plan for one month (medium-term schedule plan)
To the dynamic scheduling system 101 via the communication line 124 and the interface (I / F) 51. A worker terminal 118 controls setting and changing of various data inside the dynamic scheduling system 101, or execution of scheduling, and is connected to the dynamic scheduling system 101 via an interface (I / F) 50 by a communication line 125. It is tangential. 52 is a communication interface (I / F)
And an assembly facility 1 (119) and an assembly facility 2 (1), which are a group of facilities constituting the production system, via the communication line 123.
20), processing equipment 1 (121), processing equipment 2 (122)
Sends schedule data to and receives data from equipment groups.

FIG. 2 shows an example of the hardware configuration of the dynamic scheduling system 101 in detail. In FIG. 2, the parts with the same numbers as in FIG. 1 are the same as those in FIG. In FIG. 2, reference numeral 1 is a central processing unit (CPU) that controls the processing of the dynamic scheduling system 101. 2 is a fixed system program (OS) 2-1, parameters 2-3, scheduling processing program 2
-2 etc. are stored in the read-only memory (RO
M). 3 is random access memory (RAM)
Then, the storage of the variable parameter 3-1 and the overlay 3-2
It is also used as a scratch pad memory 3-3.

Reference numeral 4 denotes a hard disk (HD), which is a file for storing various conditions and data, plans, process flows, schedules, etc. Further, a processing program can be stored and loaded into the RAM 3 for execution. still,
Other media or media containing other media may be used as long as they can store files. Reference numeral 5 is a floppy disk (FD) that enables carrying of programs and data. A bus 6 is a signal line that connects the CPU 1 and other components.

With the above hardware configuration, the CPU 1
Is a program stored in ROM2 or HD4
According to the processing procedure of the program read from (FD5) onto the RAM 3, based on the data and instructions from the host computer 113 and the worker terminal 118, and the operation status data from the assembly equipment 1 to the processing equipment 2, ROM
Parameters stored in 2 or HD4 (FD5)
The dynamic scheduling of this embodiment is executed using the parameters read from the RAM 3 to the RAM 3.

<Functional Block Configuration Example> FIG. 3 is a diagram showing a logical configuration of the dynamic scheduling system 101. In the figure, the solid line shows the flow of data,
The broken line shows the flow of control. Each functional block is realized by appropriately using a plurality of components of the above hardware. For example, each storage unit is composed of ROM2, RAM3, HD4 or FD5, and each control processing unit is CPU1 and R.
It is composed of OM2 and RAM3.

As can be seen from FIG. 3, the main control processing unit is composed of the following six units. (1) Communication control unit (102) (2) Process status data collection unit (103) (3) Scheduling start determination unit (109) (4) Schedule creation unit (110) (5) Schedule implementation possibility determination unit (111) (6) Schedule execution processing unit (112) Hereinafter, each of these control processing units will be described in order.

(Communication control unit 102) Assembly facility 1 (119), assembly facility 2 (120), processing facility 1 (121), processing facility 2 which is a group of facilities constituting the production system.
(122) is a communication control unit that controls the transmission and reception of data between the communication interface 52 and the communication line 123.

(Process status data collection unit 103) FIG.
It is the figure which extracted the part relevant to the function of the process status data collection part 103 among FIG. As shown in FIG. 4, the process status data collection unit 103 collects the process status data D ₀ of the production system via the communication control unit 102 at regular intervals, and the collected process status data D ₀ is used as the production performance data. The production record data storage unit 105 and the facility operation data storage unit 104 are updated separately for D ₁ and the facility operation data D ₂ . In the present embodiment, the update by the process status data collection unit 103 is performed at regular intervals, but it may be configured to start when the process status data D ₀ of the production system is changed.

(Schedule Start Judgment Unit 109) FIG.
FIG. 4 is a diagram in which a portion related to the function of the schedule start determination unit 109 is extracted from FIG. 3. As shown in FIG. 5, the scheduling start determination unit 109 causes the production record data D ₁ stored in the production record data storage unit 105 and the production schedule data D ₆ stored in the schedule storage unit 117 at regular intervals. Is read and compared, and it is determined whether or not the scheduling should be started based on the schedule start condition data D ₃ stored in the schedule start condition storage unit 108. Further, the equipment operation data D ₂ stored in the equipment operation data storage unit 104 and the equipment operation data D at the start of scheduling stored in the equipment operation data storage at the start of scheduling.
₅ 'and compares reads to determine whether to initiate a scheduling based on the schedule start condition data D _3.

When it is determined that the scheduling should be started, a schedule start flag is set and the schedule creating section 110 is activated, and at the same time the production record data storage section 1 is started.
The production record data D ₁ read from 05 is set as the production record data D ₄ at the start of scheduling in the production record data storage unit 107 at the start of scheduling, and the equipment operation data D ₂ read from the equipment operation data storage unit 104.
Is stored in the scheduling start facility operation data storage unit 106 as the scheduling start facility operation data D ₅ .

In the present embodiment, the determination by the scheduling start determination unit 109 is made every fixed period, but it is configured to start when the production record data D ₁ or the equipment operation data D ₂ is changed. May be. FIG. 6 is an example of scheduling start condition data stored in the scheduling start condition storage unit 108.

Each starting condition is described in the item part of FIG. 6, and the value part is a judgment value for judging whether or not the scheduling should be started. In FIG.
The value of machining delay is described as 1.0, which defines that the scheduling is executed when the machining of the part is delayed by 1 hour from the schedule. Further, although the equipment failure value is described as 1.0, this defines that the scheduling is executed when the equipment failure stop time exceeds 1 minute.

FIG. 7 and FIG. 8 are flowcharts showing the outline of the processing of the scheduling start determination unit 109. The process of the scheduling start determination unit 109 is activated every predetermined period. The processing procedure of the scheduling start determination unit 109 will be described below with reference to the flowcharts of FIGS. 7 and 8. When the scheduling start determination unit 109 is activated, the schedule start condition data D ₃ is input from the scheduling start condition storage unit 108 in step S301. Next, in step S302, the current production record data D ₁ is input from the production record data storage unit 105. Next, in step S303, the schedule data D ₆ is input from the schedule storage unit 117.

In step S304, the scheduled schedule
Data D₆ And current production performance data D₁ Based on
Schedule the parts processing and compare it with the actual results, and schedule
Le D ₆ Calculate the lead and lag times for. Step
In step S305, the schedule start condition data is
Data D₃ Decide whether to start scheduling based on
Set. If you do not start scheduling, ie
When the lead time or delay time of parts processing is less than the specified value,
Go to step S308, start scheduling
In this case, the process proceeds to step S306.

In step S306, the schedule start schedule
Make a rug. In step S307, the current production
Actual data D₁ At the start of scheduling
TA D _Four As production data at the start of scheduling
Save in the storage unit 107. In step S308, equipment
Facility operation data at present from the operation data storage unit 104
D₂ Read. In step S309, the schedule
From the equipment operation data storage unit 106
Equipment operation data D at the start of drilling_FiveRead ´
Mu.

In step S310, the equipment operation data D ₂ at the present time and the equipment operation data D at the time of scheduling start
Compares with ₅ ', in step S311, based on the scheduling start condition data D _3, performs whether the judgment scheduling start or. If scheduling is not started, the process proceeds to step S314, and if scheduling is started, the process proceeds to step S312.

In step S312, a scheduling start flag is set. In step S313, the capacity utilization data D ₂ at the present time, as the capacity utilization data D ₅ at scheduled start, saving to scheduling start capacity utilization data storage unit. In step S314,
It is determined whether the schedule start flag is set. If the schedule start flag is not set, the process ends. If the schedule start flag is set, the process proceeds to the next step S315, and the schedule creation unit 110
To start.

(Schedule Creating Unit 110) FIG. 9 is a diagram in which a portion related to the function of the schedule creating unit 110 is extracted from FIG. As shown in FIG. 9, the medium-term schedule plan data D ₇ that is input from the host computer 113 and is to be produced for one month is read from the medium-term schedule plan storage unit 114. Further, the process flow data D _{8 for} each product including the process order of each product, equipment used, and processing time.
Is read from the product-specific process flow storage unit 115. Furthermore,
The scheduling start production performance data D ₄ is input from the scheduling start production performance data storage unit 107, and the scheduling start facility operation data D ₅ is input from the scheduling start facility operation data storage unit 106.

The schedule creating section 110 calculates a work schedule for one week from the above data. In addition,
The schedule target period can be set from the worker terminal 118 for creating the schedule, and an arbitrary period can be set as the schedule target period. Schedule creation unit 11
0 extracts usable equipment from the input data and schedules the equipment. For example, if there is a delay from the schedule, scheduling is performed according to the "delivery delay delayed component priority allocation rule" so that the delay is minimized. In addition, in the case than expected processing that is progressing, as capacity utilization is maximized to scheduling by the "capacity utilization rate up to priority rules". If there is a failed equipment, the alternative equipment is obtained from the process flow data of the product so that the alternative equipment can perform processing, and scheduling is performed according to the "rule of minimum processing time". When the scheduling is completed, the schedule creation unit 110 stores the resulting schedule data D9 in the schedule storage unit 117, and next, the schedule implementation availability determination unit 11
Start 1.

(Schedule Implementation Possibility Determining Unit 111) FIG.
It is the figure which extracted the part relevant to the function of. As shown in FIG. 10, the schedule exemplary determination unit 111 reads the schedule implementation propriety condition data D ₁₀ stored in the schedule exemplary propriety condition storage unit 116, the schedule creation unit 110 based on the schedule exemplary propriety condition data D ₁₀ Determine whether the created schedule is feasible.

FIG. 11 shows schedule executability condition data D stored in the schedule executability condition storage section 116.
_This is an example of ₁₀ . In FIG. 11, the column of scheduling start time 401 shows the state of equipment or parts at the time of scheduling start. The column of scheduling completion time 402 shows the state of equipment or parts at the time of scheduling completion. When the state described at the time of scheduling start 401 changes to the state described at the time of scheduling completion 402, the process described in the corresponding process 403 is performed. In the process 403, the re-schedule 404 means to automatically reschedule. The re-schedule inquiry 405 means that a re-schedule is necessary, but the worker inquires through the schedule creation worker terminal 118 to determine whether or not to reschedule. Schedule execution 406 means executing the created schedule as it is. The processing progress 407 means that the schedule of the corresponding part in the created schedule is changed so as to proceed to the state at the time of scheduling completion, and the schedule is executed.

12 and 13 are flow charts showing the outline of the processing of the scheduling executability judging unit 111. Hereinafter, the flowcharts of FIGS. 12 and 13 and FIG.
The processing of the scheduling executability determination unit 111 will be described with reference to. In FIG. 12, when the scheduling executability determination unit 111 is activated, the schedule executability condition data D ₁₀ stored in the schedule executability condition storage unit 116 is read in step S501. In step S502, the scheduling start production result data D ₄ stored in the schedule start production result data storage unit 107 is read. In step S503,
The current production performance data D ₁ ′ stored in the production performance data storage unit 105 (the contents of the production performance data storage unit 105 are updated by the process status data collection unit 103 if there is a change in the production performance data). Read out.

In the next step S504, a change in the machining status is inspected based on the schedule executability condition data D ₁₀ . When there is no change, the process proceeds to step S506, and when there is a change, the process of step S505 is performed. Step S
In 505, since the change in the processing status matches the schedule executability condition, the flag of the process 403 designated by the schedule executability condition data D ₁₀ (FIG. 11) is set.

In step S506, the scheduling start facility operation data D ₅ stored in the scheduling start facility operation data storage unit 106 is read. In step S507, the current equipment operation data D ₂ ′ stored in the equipment operation data storage unit 104 (the contents of the equipment operation data storage unit 105 are updated by the process status data collection unit 103 if the equipment operation data changes). Has been)
Read out.

In step S508, a change in the equipment operating condition is inspected based on the schedule executability condition data D ₁₀ . If there is no change, go to step S510,
If there is a change, the process proceeds to the next step S509. In step S509, since the change in the facility operation status matches the schedule executability condition, the flag of the designated process 403 of the matched schedule executability condition data D ₁₀ (FIG. 11) is set.

In step S510 of FIG. 13, it is checked whether the rescheduling inquiry flag is set. When the rescheduling inquiry flag is not set, the process proceeds to step S512, and when the flag is set, step S511 is executed. In step S511, the re-scheduling inquiry process is activated and the process ends.

Here, the rescheduling inquiry processing is to judge whether to display the change of the processing status or the equipment operating status on the terminal 118 for the schedule creator and to make a decision as to whether to reschedule or to execute the created schedule as it is. , Is a process of intervening a person. That is, the inquiry whether rescheduling execution instruction to the operator, if any instruction rescheduling process returns to the scheduling start determining unit 109 proceeds to the process of Shaving Joule execution processing unit 112 if there is an instruction schedule execution.

Step S512 is the preprocessing step S512.
510 is a process when the rescheduling query flag is not set, rescheduling flag checks whether that standing. That is, step S51
2 is a process for automatically making a judgment, whereas a person intervenes in the judgment in step S511. When the rescheduling flag is not set, the process proceeds to step S514, the schedule execution processing unit 112 is activated to execute the created schedule, and the process is ended. When the rescheduling flag is set, step S51
3, the scheduling start processing unit 109 is activated to automatically execute the rescheduling, and the processing ends.

(Schedule execution processing unit 112) FIG.
FIG. 4 is a diagram in which a portion related to the function of the schedule execution processing unit 112 is extracted from FIG. 3. As shown in FIG. 14, the schedule execution processing unit 112 inspects whether the processing progress flag is set in the schedule execution availability determination unit 111. When the machining progress flag is set, the current production record data D ₁ ′ is read from the production record data storage unit 105, and the schedule storage unit 11 is read.
7 and appropriate to proceed the machining status in part in the schedule data D ₉ stored, and 'schedule data D ₉ to match the' current production result data D _1, schedule the communication control unit 102 The transfer of the schedule data D ₉ ′ in the storage unit 117 is requested.

(Communication control unit 102) Communication control unit 102
Transfers the schedule data D ₉ ′ in the schedule storage unit 117 to each of the facilities 119 to 122 via the communication line 123 based on the request from the schedule execution processing unit 112. As described above, in the present embodiment, since the scheduling is performed in consideration of the change of the production system during the scheduling calculation time, the truly feasible scheduling is instructed to each facility, and the productivity is improved and the load of the scheduling staff is increased. Reductions are achieved.

[0043]

[Other Embodiments] In the above embodiments, the dynamic scheduling system 101 is implemented on a centralized management computer that collects and transfers data, but a dedicated computer is used for data management. It can also be implemented in a client / server type system configuration. In this case, the production record data storage unit 105 and the equipment operation data storage unit 104 exist in the server, and the dynamic scheduling system 101 is realized as one of the clients. Further, the dynamic scheduling system 101 may be part of the host computer 113.

Further, in the above-described embodiment, the automated equipment as the production system is targeted, and these equipments are connected to the dynamic scheduling system 101 by the communication line 123. However, the equipment is not connected by a communication line, and the data input terminal 118 connected by the communication line 125 to the dynamic scheduling system 101 is near each of the equipment 119 to 122, and the worker has a production record or equipment operation. It can be applied to a production system where the situation is manually input.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of one device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

[0046]

Effect of the Invention] As described above, the dynamic scheduling method and system of the present invention, scale
Considering that it takes a finite time to create a module, the changes in the production system before and after schedule creation are monitored to determine whether the schedule created before the schedule is executed is valid. Can be instructed. As a result, a truly effective schedule can be instructed to the production system, and productivity can be improved and the number of schedule creators can be reduced.

That is, according to the present invention, the schedule creation is performed by taking the time required for the schedule creation into consideration.
Changes in the production system that generates the scheduling completion o'clock from the start can be properly processed, for example, schedule
Rescheduling or inquiries about rescheduling can be made in response to changes in the facility operation status of the production system that occur between the start of creating a schedule and the completion of creating a schedule . Furthermore, it is possible to prevent unnecessary rescheduling by determining whether or not a schedule needs to be created before performing rescheduling.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a dynamic scheduling system of this embodiment.

FIG. 2 is a diagram showing a hardware configuration example of a dynamic scheduling system of the present embodiment.

FIG. 3 is a logical configuration diagram of a dynamic scheduling system of the present embodiment.

FIG. 4 is a diagram for explaining a process status data collection unit.

FIG. 5 is a diagram for explaining a schedule start determination unit.

FIG. 6 is a diagram showing an example of scheduling start condition data.

FIG. 7 is a flowchart showing an outline of processing of a scheduling start determination unit.

FIG. 8 is a flowchart illustrating an outline of processing of a scheduling start determination unit.

FIG. 9 is a diagram illustrating a schedule creation unit.

FIG. 10 is a diagram illustrating a schedule implementation availability determination unit.

FIG. 11 is a diagram showing an example of schedule executability data.

FIG. 12 is a flowchart showing an outline of the processing of a schedule executability judging unit.

FIG. 13 is a flowchart showing an outline of processing of a schedule executability judging unit.

FIG. 14 is a diagram illustrating a schedule execution processing unit.

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-4-107676 (JP, A) JP-A-4-233069 (JP, A) JP-A-3-104544 (JP, A) JP-A-5- 298328 (JP, A) JP 5-158944 (JP, A) JP 6-12545 (JP, A) JP 4-250957 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G05B 19/418 G06F 17/60

Claims (12)

(57) [Claims] 1. A when the error occurs between the preset schedule and actual production of the production system, the dynamic scheduling to perform rescheduling production
In the scheduling method of a scheduling system, a scheduling step of creating a schedule of the production system, and a method of scheduling the dynamic schedule at the start of schedule creation.
Of the production system by the processing system processor
A storage step of storing the operating status of the storage device in the storage means, and the processor stores the storage status when the schedule creation is completed.
Production system equipment at the start of schedule creation from means
Read the operating status and use the processor to schedule
In comparison with the equipment operation status of the production system when the
And the monitoring process for monitoring changes in the operating status of the production system equipment, and the monitoring results of the monitoring process when the schedule is created.
Schedule of the dynamic scheduling system, characterized in that the processor has a determining step of determining to perform rescheduling when it shows a change in the operating status of the equipment of the production system between the completion time and the completion time. How to go. 2. In the determination step, further, when the monitoring result in the monitoring step does not indicate a change in the equipment operating condition of the production system, the processor follows the schedule created in the scheduling step. The scheduling method of the dynamic scheduling system according to claim 1, wherein it is determined that processing is performed. The method according to claim 3, wherein said determining step further, if the result of monitoring by said monitoring step indicates a change in the capacity utilization status of the facility operation from equipment failure of the production system, the processor
But either re-scheduling the operator, or according to claim 1 or 2, wherein the dynamic scheduling is characterized in that it is determined that inquires whether to perform processing on a schedule created by the scheduling step
System scheduling method. 4. The processor further comprises a scheduling start determination step of determining whether a schedule needs to be created, and when the scheduling start determination step determines that the schedule has to be created, the scheduling step determines 4. The dynamic scale according to claim 1, wherein the dynamic scale is created.
Scheduling method for a juling system . 5. The dynamic schedule according to claim 4, wherein in the scheduling start determination step, it is determined whether a schedule needs to be created based on a change in production performance of the production system and a change in equipment operation.
Ring system scheduling method. 6. In the scheduling start determination step, it is determined whether a schedule needs to be created based on a determination condition including any one of a processing delay time, a processing advance time, and equipment failure of the production system. A scheduling method for a dynamic scheduling system according to claim 5. 7. A dynamic scheduling system for rescheduling production when an error occurs between a preset schedule of a production system and a production record, and a scheduling means for creating a schedule for the production system. Monitoring means for monitoring the change in the facility operation status of the production system from the start of the schedule creation to the completion of the schedule creation, and rescheduling is performed when the monitoring result of the monitor means indicates the change in the facility operation status of the production system. A dynamic scheduling system, comprising: a determining means for determining. 8. The determining means further determines that processing is performed according to the schedule created by the scheduling means when the monitoring result of the monitoring means does not indicate a change in the equipment operation status of the production system. The dynamic scheduling system according to claim 7, wherein: 9. The determining means further re-schedules to an operator when the monitoring result of the monitoring means indicates a change in the equipment operating condition of equipment operation from equipment failure of a production system, or the scheduling means. 9. The dynamic scheduling system according to claim 7, wherein it is determined that an inquiry is made as to whether or not the machining should be performed according to the schedule created in. 10. A scheduling start determination means for determining whether or not a schedule needs to be created, and when the scheduling start determination means determines that a schedule has to be created, the scheduling means creates the schedule. The dynamic scheduling system according to any one of claims 7 to 9, characterized in that. 11. The dynamic scheduling according to claim 10, wherein the scheduling start determination means determines whether or not a schedule needs to be created based on a change in production performance of the production system and a change in equipment operation. system. 12. The scheduling start determination means determines whether or not a schedule needs to be created based on a determination condition including any one of a processing delay time, a processing advance time, and equipment failure of a production system. The dynamic scheduling system according to claim 11, which is characterized in that: