KR100482610B1 - A control method for flowing of vehicles using buffer - Google Patents

Abstract

The present invention does not locally manage the joining and branching control of the buffer in each process in a factory composed of a plurality of work processes and buffers, and uses the data of the pre-injected vehicle when the vehicle arrives at the factory input point. By creating a virtual provision situation of each predicted buffer, the vehicle flow control code is created and tuned by determining the path passing through each buffer, the lane and time to be entered into each buffer, and the time to be drawn out. It provides a vehicle flow control method using a buffering control to control the flow when passing each buffer.

Description

Vehicle flow control method using buffering control {A CONTROL METHOD FOR FLOWING OF VEHICLES USING BUFFER}

The present invention relates to a vehicle flow control method using a buffering control, and more particularly, to a factory without a plurality of work processes and a control of merging and branching control of the buffers locally in each factory. When the vehicle arrives at the injection point, the virtual data of each buffer is created by using the data of the vehicle, and the path passing through each buffer, the lane and time entering each buffer, the time taken out, etc. The present invention relates to a vehicle flow control method using a buffering control to create and tune a vehicle flow control code, and to control the flow when each vehicle passes each buffer using the same.

In general, in order to produce a finished car, automakers go through various processes from selection of materials to mass production, and these processes produce more products in a shorter time by adopting an automation system in accordance with the trend of factory automation. Efforts are underway, and various efforts are under way to make efficient use of the facility.

In this respect, the automaker's paint shop consists of a number of processes and buffers, which are branched and re-joined as needed to ensure that vehicles with the specifications required for each process are pulled in and out. .

Vehicle flow control of the paint shop constituting each of these processes and buffers, as shown in Figures 1 and 2, to first set the constraints for the workplace (W1) of the process (S10), then the process The currently provided vehicle situation of the previous buffer 1 B1 is detected (S20).

Then, the vehicle that does not violate the working condition is selected according to the currently detected vehicle condition on the buffer 1 (B1) before the process and is withdrawn from the buffer 1 (B1) (S30). In step W1), the vehicle having completed the process is moved to the inlet point IP2 of the buffer 2 (B2) after the process (S40).

Subsequently, after the process, it is determined whether a designated lane (i.e., a passage) for the specification of the vehicle exists in the buffer 2 (B2) (S0), and if present, sets the vehicle to be introduced into the designated lane, ( If it is not present, it is controlled to set the lane with the lowest number of vehicles provided among the lanes of the buffer 2 (B2) as the incoming lane after the process.

However, as described above, the conventional vehicle flow control is made to control local vehicle intake and withdrawal in each process (control range limited to the buffers B1 and B2 before or after the corresponding workplace W1), and the vehicle When the vehicle arrives at the entry point (IP2) of each buffer (ie, B2), the incoming control is put on the designated lane when there is a designated lane for each vehicle specification, and when there is no designated lane. The number of vehicles provided is to be stocked in the least lanes.

In addition, the withdrawal control of the vehicle does not violate the already drawn out vehicle and the regulatory conditions, and makes it possible to withdraw the vehicle necessary for each work process for the vehicle existing in the buffer, and the control specification management of the vehicle is the flow of the entire factory. In order to change the flow of the vehicle by locally managing only the withdrawal or inflow conditions required for each work process, not the control specification, the flow must be changed by changing the set values in each process. This implies that it is impossible to predict the overall flow of the system.

  In addition, it is impossible to control the buffer in which the work process does not exist before or after the process, and the passing time and passage path of each buffer can be determined only when each vehicle arrives at the corresponding buffer. There is also a problem such as.

Accordingly, the present invention was created to solve the above problems, and an object of the present invention is to locally manage the joining and branching control of the buffers in each process in a factory composed of a plurality of work processes and buffers. Instead, when the vehicle arrives at the factory input point, the virtual data of each buffer is created by using the data of the vehicle, and the path passing through each buffer, the lane and time entering each buffer, and the time taken out. It is to provide a vehicle flow control method using a buffering control to determine and the like to create and tune the vehicle flow control code, and to control the flow when each vehicle passes each buffer using the same.

A vehicle flow control method using buffering control according to the present invention for realizing the above object comprises: a specification determination step of detecting a vehicle body number of a corresponding vehicle arriving at a factory input point and comparing the specification with a specification table; An entry code for determining a setting buffer to be drawn in according to the specification and a designated lane in the setting buffer, and a drawing condition for determining the drawing condition so that the vehicle is drawn out according to a setting condition in the setting buffer to be drawn out according to the specification; An incoming and outgoing code preparation step of creating an outgoing code; A total path setting step of the vehicle displaying the information of each setting buffer and the designated lane of the vehicle according to the path set by the entry code of the vehicle by the number of the designated lane in the order of each setting buffer; Determining an entry time of a corresponding buffer for setting the time at which the vehicle arrives at a factory entry point as an entry time from an entry point of the buffer; A step of determining an entry lane of the corresponding buffer for re-determining and injecting an entry lane of the vehicle to be introduced through the entry point in consideration of the present state of the vehicle in the buffer; Determining the withdrawal time of the corresponding buffer to determine the withdrawal time so that the vehicle to be introduced into the process through the withdrawal point of the buffer does not violate the withdrawal condition; A next buffer determination step of determining whether a next buffer exists; A flow control table creating step of creating a flow control table composed of information of a vehicle name, a pulling code, a drawing code, a setting buffer, a drawing lane, a drawing time, and a drawing time of the corresponding vehicle; Tuning in and out time of the vehicle to tune in and out time calculated by comparing the in and out time calculated in the flow control table of the vehicle with respect to the vehicle and the actual in and out time of the vehicle Steps.

BEST MODE Hereinafter, preferred configurations and operations of the present invention will be described in detail with reference to the accompanying drawings.

3 is an overall process diagram to which a vehicle flow control method using buffering control according to an embodiment of the present invention is applied, and FIG. 4 is a flowchart of a vehicle flow control method using buffering control according to an embodiment of the present invention.

A factory for applying a vehicle flow control method using a buffering control according to an embodiment of the present invention, as shown in Figure 3, five buffers (B1, B2, B3, B4, B5) and four process workshops ( A painting factory having W1, W2, W3, and W4) will be described as an example.

The buffer includes five lanes in buffer 1, three lanes in buffer 2, four lanes in buffer 3, eight lanes in buffer 4, and four lanes in buffer 5. do.

In the vehicle flow control method using the buffering control of the present invention through the paint shop configured as described above, as shown in FIG. 4, first, by detecting the body number of the vehicle arriving at the factory input point and comparing it with the specification table, The specification determination step (S10) of determining the specifications is carried out.

An entry code for determining a setting buffer to be drawn in according to the specification and a designated lane in the setting buffer, and a drawing condition for determining the drawing condition so that the vehicle is drawn out according to a setting condition in the setting buffer to be drawn out according to the specification; A draw-in and draw-out code preparation step (S20) of creating a draw-out code is performed. In the draw-in code, as shown in FIG. 8, the corresponding vehicle has an option item OPT_1, 2, 3, 4, 5. It is determined as whether or not it is applied to, and if it is not applicable, it is represented as the sum of the binary number applied by applying "0", and the factor is the condition name (diesel, RHD, ABS ..) It consists of a buffer and a designated lane.

As shown in FIG. 9, the withdrawal code determines whether the corresponding vehicle corresponds to each option item OPT_1, 2, 3, 4, 5, and does not correspond to “1” in this case. In this case, it is represented as the sum of the binary number applied by applying "0", and the factor is the condition name (diesel, GK2.7, GK, ABS ..), the setting condition (continuous: 3, interval: 2 ...) and It is configured to include a setting buffer.

Here, the setting conditions (draw-out conditions) are made of conditions that continuously input into the corresponding process of the vehicle or define an interval between the vehicles.

And setting the entire path of the vehicle (S30) to display the information of each setting buffer and the designated lane of the vehicle according to the path set by the entry code of the vehicle by the number of the designated lane in the order of each setting buffer (S30). As shown in FIG. 10, if the route set by the entry code of the vehicle is as shown, the route value of the vehicle is displayed as “32101”.

Here, the number of the designated lane of the buffer 4 is displayed as "0" means that the vehicle does not pass through the buffer 4.

As such, when the total path value of the vehicle is set, the vehicle sets the time of arrival at the factory input point (SN1) through the initial setting buffer (Buffer N = 1) as the entry time from the entry point of the buffer. In step S40 of determining the draw time of the corresponding buffer.

Subsequently, in consideration of the current state of the vehicle provided in the buffer, the step of determining the inlet lane of the corresponding buffer for re-determining and injecting the inlet lane of the corresponding vehicle to be introduced through the inlet point is performed.

In the pulling lane determination step (S50), as shown in Figure 5, it is determined whether the specification of the vehicle is present in the entry code table (S51).

Here, when the specification of the vehicle exists in the entry code table, it is determined whether the vehicle is in a full state by applying the first priority (N = 1) designated lane of the vehicle (S52). In this case, when the vehicle is not in the full state, the inflow lane of the vehicle is determined as the first priority designation lane in the buffer, and the process proceeds to the next step S60 (S54).

In step S51, if the specification of the vehicle does not exist in the entry code table, the entry lane in the buffer is determined to be the smallest lane of the vehicle, and the flow proceeds to the next step S60.

Further, in the step S53, when the vehicle is in a full state in the designated lane, the incoming lane of the vehicle is applied as the second priority designated lane in the buffer (S56), and the first buffer in the corresponding buffer is applied. It is determined whether a second priority designation lane (N = N + 1) exists (S57). If there is a second priority designation lane, the process returns to the step S53. S55).

When the inlet lane determination step (S50) as described above is completed, the withdrawal of the buffer to be withdrawn by determining the withdrawal time so that the vehicle to be introduced into the process does not violate the withdrawal condition through the withdrawal point of the corresponding buffer. The time decision step S60 is performed.

In the drawing time determining step (S60), as shown in FIG. 6, a drawing list is prepared using the drawing time of each vehicle in the buffer from the drawing lane determining step (S50). (S61)

Subsequently, it is determined whether the specification of the vehicle corresponds to the drawing code table (S62).

In step S62, if the specification of the vehicle is a specification corresponding to the withdrawal code table, it is determined whether the withdrawal condition of the vehicle violates the vehicle and the input ratio on the withdrawal list by applying the withdrawal condition of the vehicle. (S63)

In the step S63, if the withdrawal condition of the vehicle is in violation of the vehicle and the input ratio on the withdrawal list, it is determined whether there is a vehicle with an undetermined withdrawal time in the buffer (S64).

In the step (S64), if there is a vehicle with the undecided time, it is determined again by combining the withdrawal time undetermined vehicle and the corresponding vehicle to create a withdrawal list that does not violate the input ratio (S65).

In the step S65, if the withdrawal list can be created, the withdrawal time undecided vehicle and the withdrawal time of the vehicle are determined and the process proceeds to the next step S70.

If the specification of the vehicle does not correspond to the withdrawal code table in step S62 or if the withdrawal condition of the vehicle does not violate the ratio of the vehicle on the withdrawal list in step S63, The withdrawal cycle time is calculated in the intake lane of the vehicle to determine the withdrawal time of the vehicle using the intake time and the withdrawal cycle time, and the flow proceeds to the next step (S70).

In addition, in the step S64, when there is no vehicle with an undecided time or when the withdrawal list cannot be made in the step S65, the withdrawal time is determined by registering the vehicle as a vehicle with an undetermined withdrawal time (S68). Step S60 is achieved.

When the drawing time determination step (S60) of the vehicle is completed, the next buffer determination to determine whether the next setting buffer exists by using the next buffer (Buffer N = N + 1) as the setting buffer (SN2) to pass the vehicle. In step S70, if there is a next buffer for the vehicle to pass through, the process returns to the inlet time determining step S40 for determining the inlet time of the corresponding buffer. As shown in Fig. 11, a flow control table creation step of creating a flow control table composed of information of a vehicle name, an entry code, an extraction code, a setting buffer, an entry lane, an entry time, and an extraction time of the corresponding vehicle as parameters; S80).

And a drawing time and a withdrawal time of a corresponding vehicle for tuning real-time drawing time and drawing time by comparing the drawing time and the drawing time calculated in the flow control table of the vehicle with respect to the corresponding vehicle, and the actual drawing time and drawing time of the corresponding vehicle. The tuning step (S90) is made to proceed.

Accordingly, in order to describe the vehicle flow control method using the buffering control of the present invention as described above in more detail through the vehicle A, as shown in FIG. 3, five buffers B1, B2, B3, B4, and B5. An example is a paint shop with four process workshops (W1, W2, W3, W4), the buffer having five lanes in buffer 1 (B1), three lanes in buffer 2 (B2), and a buffer. In order to explain in more detail assuming that 3 (B3) has four lanes, buffer 4 (B4) has eight lanes, and buffer 5 (B5) has four lanes, as shown in FIG. Partially post 1 (B1) and buffer 2 (B2).

That is, as shown in Figure 7, the buffer 1 (B1) seven vehicles (B, C, D, E, F, G, H) from the vehicle B to the vehicle H is provided first through each lane, the buffer 4 (K, L, M, N) from the vehicle K to the vehicle N is provided in each lane 2 (B2), and the vehicle I (I) is put into the workshop 1 (W1) and is in the process of working. Set it.

That is, when the vehicle A (A) arrives at the factory input point, the vehicle body number of the vehicle is first detected and compared with the specification table to determine the specification of the vehicle A. (S10)

Then, the vehicle A (A) determines a setting buffer to be drawn in according to the specification and an entry code for determining a designated lane in the setting buffer, and the vehicle is drawn out according to the setting condition in the setting buffer to be drawn out according to the specification. A withdrawal code for determining a withdrawal condition is prepared. (S20)

Here, if the incoming code of the vehicle A (A) is as shown in Fig. 8, the vehicle A (A) is set to the entry code "5" corresponding to the options of the condition name "diesel" and "ABS" items. do.

At this time, the setting buffer on the entry code for the vehicle A (A) is designated as buffer 1 (B1), buffer 2 (B2), buffer 3 (B3), buffer 5 (B5) and passes through the designated lane. It becomes lane 3 in buffer 1 (B1), becomes lane 2 in buffer 2 (B2), becomes lane 1 in buffer 3 (B3), and lane 1 in buffer 5 (B5).

If the withdrawal code of the vehicle A (A) is as shown in Fig. 9, the withdrawal code for the vehicle A (A) has the same condition name and setting buffer as that of the withdrawal code, and the setting condition (withdrawal condition). ) Is set to "Continuous 3" for the condition name "Diesel" and to "Interval 2" for the condition name "ABS".

In this case, the term "continuous 3" means that a vehicle under this condition is a rate violation when three or more vehicles are inserted in succession, and the meaning of "interval 2" means a vehicle that does not belong to this condition when a vehicle belonging to this condition is inserted. At least two of these must be committed, otherwise it means a rate violation.

Subsequently, according to the route set by the entry code of the vehicle A (A), the information of each setting buffer and the designated lane of the vehicle A (A) is indicated by the number of the designated lane in the order of each setting buffer. The entire path is set (S30).

That is, as shown in FIG. 10, the route value set by the vehicle A (A) by the entry code is displayed as “32101”, and the vehicle A (A) is the lane 3 and the buffer in the buffer 1 (B1). This means that lane 2 passes through lane 2 in buffer line 2 (B2), lane 1 passes through buffer 1 (B3), and lane 1 passes through buffer 5 (B5), and buffer 4 (B4) does not pass through.

As described above, the buffer is limited to buffer 1 (B1) and buffer 2 (B2) in order to calculate the inlet and out time in the corresponding buffer of the vehicle A (A) having the total path value set to "32101". see.

Here, in order to calculate the in and out time of the vehicle A (A) for each buffer, the intake time in the buffer 1 (B1) must be determined first (S40).

That is, the vehicle A (A) sets the time of arrival at the factory input point of the buffer 1 (Buffer N = 1) as the initial setting buffer (SN1) as the entry time from the entry point IP1 of the buffer 1 (B1). That is, as shown in Figure 7, the current time is "09:30:00"

 It is assumed that the drawing time of the buffer 1 (B1) is "10:00 minutes 00 seconds".

Subsequently, in consideration of the present status of all vehicles B, C, D, E, F, G and H in the buffer 1 B1, the inlet lane of the vehicle A (A) to be introduced through the inlet point IP1 is considered. In order to re-determine (S50), it will be described in detail, it is first determined whether the specification of the vehicle A (A) exists in the incoming code table (S51), if present, the buffer of the vehicle A (A) It is determined whether the other vehicle is in a full state at the designated lane (lane 3) at 1 (B1) (S52).

Here, since lane 3 of the current buffer 1 (B1) is not in a full state, an incoming lane of the buffer 1 (B1) of the vehicle A (A) is determined as lane 3 (S54).

Of course, if the specification of the vehicle A (A) does not exist in the entry code table in step S51, the entry lane in the buffer 1 (B1) is determined as the lane where the vehicle is the smallest and proceeds to the next step. In operation S53, when the vehicle is in a full lane in the designated lane lane 3, the incoming lane of the vehicle A (A) is assigned to the second priority designated lane in the buffer 1 (B1). In operation S56, it is determined whether a second priority designation lane exists in the buffer 1 (B1). In operation S57, if the second priority designation lane exists, the buffer 1 of the vehicle A (A) is used. In step S53, it is determined whether another vehicle is in a full state in the second priority designated lane in (B1), and if the second priority designated lane does not exist, the buffer 1 (B1) is stored. In step S55, the incoming lane is determined to be the smallest lane of the vehicle, but the vehicle A (A) according to the embodiment has no solution. Since there is no point, the detailed description is omitted.

As described above, after the vehicle A (A) is introduced through lane 3 of the buffer 1 B1 through the inlet lane determination step S50, the process workshop is performed through the outgoing point OP1 of the buffer 1 B1. In order to be introduced into 1 (W1), the withdrawal time determination step (S60) is performed in the buffer 1 (B1) to determine the withdrawal time so as not to violate the withdrawal conditions. A withdrawal list is created using the withdrawal times of each vehicle B, C, D, E, F, G, H in buffer 1 (B1) (S61).

Subsequently, it is determined whether the specification of the vehicle A (A) corresponds to the drawing code table.

In the step S62, if the specification of the vehicle A (A) corresponds to the drawing code table, the vehicle A ("continuous 3", "interval 2") is applied by applying the withdrawal conditions of the vehicle A (A). It is determined whether the withdrawal condition of A) violates the vehicle and the input ratio on the withdrawal list.

In the step S63, if the withdrawal condition of the vehicle A (A) violates the vehicle and the input ratio of the withdrawal list, it is determined whether there is a vehicle with no withdrawal time in the buffer 1 (B1), and (S64) where withdrawal time is not determined If there is a vehicle, it is determined again by combining the vehicle with the undetermined withdrawal time and vehicle A (A) to create a withdrawal list that does not violate the input ratio (S65).

If the withdrawal list can be created in step S65, the withdrawal time of the vehicle with the undecided withdrawal time is determined and the process proceeds to the next step S70.

In step S62, the specification of the vehicle A (A) does not correspond to the withdrawal code table, or in step S63, the withdrawal condition of the vehicle A (A) is determined by the vehicle and the input ratio on the withdrawal list. If not in violation, the withdrawal cycle time is calculated in the inlet lane of the vehicle A (A), and the withdrawal time of the vehicle A (a) is determined using the inlet time and the withdrawal cycle time to proceed to the next step. S67)

In addition, in the step S64, when there is no vehicle with an undetermined withdrawal time or when the withdrawal list cannot be made in the step S65, the vehicle A (A) is registered as the withdrawal time with undetermined vehicle (S68). Withdrawal time determination step (S60) is achieved.

When the vehicle A (A) reaches the factory input point IP1 (the input point of the buffer 1) through the drawing time determining step S60, the cycle time of the lane 3 in the buffer 1 B1 is 00 o'clock. If it is 45 minutes and 14 seconds, the withdrawal time of the buffer 1 (B1) of the vehicle A (A) is set to "10:45 minutes and 14 seconds".

Therefore, the entry and withdrawal times of each buffer B1 to B5 for the vehicle A (A) are calculated through the following process. When the withdrawal time determination step S60 of the buffer A (B1) of the vehicle A (A) is completed, the buffer 2 (Buffer N = N + 1), which is the next buffer to be passed by the vehicle A (A), is set as the buffer. In step (SN2), a next buffer determination step (S70) of determining whether a next setting buffer B2 exists is performed, where buffer 2 (B2), which is the next buffer to be passed by the vehicle A (A), exists. In this case, the flow returns to the entry time determination step S40 for determining the entry time of the buffer 2 (B2) to calculate the entry time in the buffer 2 (B2) of the vehicle A (A).

That is, when the drawing time of the buffer 1 (B1) of the vehicle A (A) is "10:00 minutes 00 seconds" and the drawing time of the buffer 1 (B1) is "10:45:14 seconds", the vehicle A The pull-in time in buffer 2 (B2) of (A) is a step between the pull-in time (10:45:14) of the buffer 1 (B1) + the pull-in from the buffer 1 (B1) into the buffer 2 (B2). The cycle time (00:02:35) in the work room 1 (W1) becomes "10:47:49".

Here, when there is no next buffer for the vehicle A (A) to pass through, that is, the entry time determination step (S40) and the entry lane determination step (S50) of the vehicle A (A) for all the buffers (B1 ~ B5). ) And the withdrawal time determination step (S60) is completed, as shown in FIG. 11, information on the vehicle name, the entry code, the withdrawal code, the setting buffer, the entry lane, the withdrawal time and withdrawal time of the vehicle A is shown. A flow control table composed of arguments is created (S80).

And a drawing time and a drawing time in the corresponding buffer calculated in the flow control table of the vehicle for the vehicle A (A), and an actual drawing time and drawing time in each of the buffers B1 to B5 of the vehicle A (A). It is possible to tune the real-time pull time and withdrawal time by comparing the (S90).

According to the vehicle flow control method using the buffering control according to the present invention as described above, in the factory consisting of a number of working processes and buffers, the merging and branching control of the buffer in the factory without locally managing each process, When the vehicle arrives at the input point, the virtual data of each buffer is prepared by using the data of the vehicle that has been input, and the path passing through each buffer, the lane and time entering each buffer, and the time taken out are determined. The vehicle flow control code can be created and tuned, and the vehicle flow control can be predicted by the integrated management of the inlet lane, the inlet and the outgoing time as each vehicle passes each buffer, and predict the flow of the vehicle. Control compatibility can be achieved.

In addition, it is possible to control the flow of the entire vehicle even when the specification of the vehicle is changed, prevent the vehicle mis-input of each process by the integrated vehicle specification management, prevent the full amount and body shortage of each buffer in advance, and the front and rear buffer The interconnection between them can be optimized to optimize the selection of process input vehicles.

In addition, it is possible to reduce the cost and increase the efficiency of the line management of the plant due to the integrated control system compared to the control system for each process.

1 is a view showing a part of a process diagram for applying a vehicle flow control method according to the prior art.

2 is a flow chart of a vehicle flow control method according to the prior art.

3 is an overall process diagram to which the vehicle flow control method using the buffering control according to an embodiment of the present invention is applied.

4 is a flowchart illustrating a vehicle flow control method using buffering control according to an exemplary embodiment of the present invention.

5 is a flow chart for determining an inlet lane in a vehicle flow control method using buffering control according to an embodiment of the present invention.

6 is a flowchart illustrating a drawing order in the vehicle flow control method using the buffering control according to an embodiment of the present invention.

7 is a partial process diagram for explaining the operation of the vehicle flow control method using the buffering control according to an embodiment of the present invention.

8 is a diagram illustrating an example of an incoming code by the vehicle flow control method using the buffering control according to an embodiment of the present invention.

9 is a view showing an example of the withdrawal code by the vehicle flow control method using the buffering control according to an embodiment of the present invention.

10 is a diagram illustrating an example of setting a route value by a vehicle flow control method using buffering control according to an exemplary embodiment of the present invention.

FIG. 11 is a diagram illustrating an example of a vehicle flow control table using a vehicle flow control method using buffering control according to an exemplary embodiment of the present invention.

Claims (7)

A specification determination step of detecting a vehicle body number of the vehicle arriving at the factory input point and comparing the specification with a specification table to determine the specification; An entry code for determining a setting buffer to be drawn in according to the specification and a designated lane in the setting buffer, and a drawing condition for determining the drawing condition so that the vehicle is drawn out according to a setting condition in the setting buffer to be drawn out according to the specification; An incoming and outgoing code preparation step of creating an outgoing code; A total path setting step of the vehicle displaying the information of each setting buffer and the designated lane of the vehicle according to the path set by the entry code of the vehicle by the number of the designated lane in the order of each setting buffer; Determining an entry time of a corresponding buffer for setting the time at which the vehicle arrives at a factory entry point as an entry time from an entry point of the buffer; A step of determining an entry lane of the corresponding buffer for re-determining and injecting an entry lane of the vehicle to be introduced through the entry point in consideration of the present state of the vehicle in the buffer; Determining the withdrawal time of the corresponding buffer to determine the withdrawal time so that the vehicle to be introduced into the process through the withdrawal point of the buffer does not violate the withdrawal condition; A next buffer determination step of determining whether a next buffer exists; A flow control table creating step of creating a flow control table of the vehicle; Tuning in and out time of the vehicle to tune in and out time calculated by comparing the in and out time calculated in the flow control table of the vehicle with respect to the vehicle and the actual in and out time of the vehicle step; Vehicle flow control method using a buffering control comprising a. The method of claim 1, wherein the incoming code Determining whether the corresponding vehicle is applicable to each option item, and if it is not applicable to "1", it is represented as the sum of the binary number applied by applying "0" and the factor is the condition name and setting buffer. And vehicle flow control method using a buffering control, characterized in that it comprises a designated lane The method of claim 1, wherein the withdrawal code Determining whether the corresponding vehicle is applicable to each option item, and if it is not applicable to "1", it is represented as the sum of binarized by applying "0" and the factor is the condition name and setting condition. Vehicle control method using a buffering control, characterized in that it comprises a setting buffer The method of claim 3, wherein the setting condition A method for withdrawing a vehicle from a warehouse, characterized in that the vehicle is continuously supplied to the corresponding process of the vehicle or provided to define a space between the vehicles. The method according to claim 1, wherein the incoming lane determination step A 51 step of determining whether a specification of the corresponding vehicle exists in an incoming code table; In the 51st step, if present, applying a priority (N) designated lane of the vehicle; A 53rd step of determining whether the vehicle is full at the designated lane in step 52; In step 53, if it is not full, step 54 in which the incoming lane of the vehicle is determined as the priority designation lane in the buffer and proceeds to the next step; In step 51, if it is not present, step 55 where the vehicle determines the incoming lane as the smallest lane and proceeds to the next step; In the step 53, in the case of full, applying the incoming lane of the vehicle as the next priority (N = N + 1) designated lane in the buffer; Following the fifty-sixth step, judging whether a next priority designated lane exists in the corresponding buffer, if there exists, returning to the fifty-third step; and if not, the fifty-seventh step proceeds to the fifty-fifth step; Vehicle flow control method using a buffering control, characterized in that consisting of. The method of claim 1, wherein the drawing time determining step A step 61 of creating a withdrawal list using the withdrawal time of each vehicle in the buffer from the withdrawal lane determination step; A sixty-sixth step of determining whether a specification of the corresponding vehicle corresponds to a drawing code table; In step 62, if it is a corresponding specification, step 63 of determining whether a drawing condition of the corresponding vehicle violates a vehicle and an input ratio on the drawing list by applying the drawing condition of the corresponding vehicle; In step 63, determining whether there is a vehicle with an indeterminate drawing time in the buffer if it is in violation; In the step 64, in the case where there is a vehicle having an undecided time, judging whether the withdrawal time undecided vehicle and the vehicle can be combined to create a withdrawal list that does not violate the input ratio; In step 65, when the withdrawal list may be generated, step 66 for determining the withdrawal time undecided vehicle and withdrawal time of the vehicle and proceeding to the next step; In step 62, if the specification is not applicable or does not violate step 63, the withdrawal time of the corresponding vehicle is calculated by using the withdrawal time and withdrawal cycle time by calculating the withdrawal cycle time in the inlet lane of the vehicle. A 67th step of determining and proceeding to the next step; In step 68, when there is no vehicle having an undetermined drawing time or in step 65, when the drawing list cannot be created, registering the vehicle as a drawing time undecided vehicle; Vehicle flow control method using a buffering control, characterized in that consisting of. The method of claim 1, wherein the factor of the flow control table is Vehicle flow control method using the buffering control, characterized in that consisting of the information of the vehicle name, the draw code, the draw code, the setting buffer, the draw lane, the draw time and the draw time of the vehicle.