KR20160141217A

KR20160141217A - Apparatus for virtual reality operation of rolling process reflecting interlock condition and method using thererof

Info

Publication number: KR20160141217A
Application number: KR1020150075918A
Authority: KR
Inventors: 이진휘; 김석; 김용수; 최자영
Original assignee: 주식회사 포스코
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2016-12-08
Also published as: KR101736570B1

Abstract

According to the present invention, a virtual operation device for a rolling process reflecting interlock conditions comprises: an interlock condition generating part which generates interlock conditions inhibiting normal operation of rolling equipment from an operation data of a rolling process within a prescribed inquiry period; and a simulation operating part which simulates a rolling process by reflecting the interlock conditions to a prescribed mathematical model for rolling. The interlock condition generating part generates interlock conditions regarding rolling equipment having the number of having interlock greater than or equal to a prescribed threshold value, and can flexibly handle various situations which can happen at the real site. Also, the interlock condition generating part can express motions in real time while reducing the amount of time spent for calculation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling process for rolling a rolling mill,

This application relates to a simulation of a rolling process.

Generally, a rolling process is a process in which a slab, a bloom, a billet, etc. produced in a continuous casting process are sandwiched between two rotating rolls and a continuous force is applied to increase or decrease the thickness of the rolls. In particular, the temper rolling process is a process performed to calibrate the telescope and wave of the hot rolled coils, one of which is composed of one set of two, Responsible for calibration.

After temper rolling, improved shape and quality can be shipped for sale or transferred to the next process. The training for new operators in this quality rolling process is carried out by the practitioner side by side, and static part about equipment specification, background theory, auxiliary equipment structure, Training is conducted on dynamic factors such as how to work, how to cope with various situations, including abnormal situations.

In particular, the rough rolling process has a lot of parts that are manually operated compared to other processes, which can result in a malfunction, damage to the equipment of the liver, etc., and the coil that has not been calibrated by the wrong operation of the new operator, This can be scrapped and can result in huge losses to the company. Therefore, in case of training or conducting training on actual facilities, it is possible to cause death due to equipment damage or shutdown due to a mistake, and in some cases, it may cause human accidents or serious problems.

Therefore, we develop, operate and utilize the virtual operation equipment for hot rolled quality rolling process so that we can train in the same environment as the field.

However, in order to express many situations that may occur in the field, it is necessary to develop a simulator that reflects actual controllers such as PLC (Programmable Logic Controller). However, if there is no PLC, it is necessary to apply the same logic as the PLC logic directly to the rolling facility or to use a soft PLC, but this is very expensive and takes a long time to develop. In particular, since too many interlock conditions are triggered on the basis of the PLC driving speed of 50 ms, it is difficult to express the movement of the facility on the screen in real time (in 50 ms cycle) like a PLC developed by a simulator.

In addition, when conducting training evaluations using the virtual operation equipment for the hot rolled steel rolling process, the manager has to perform only within the training evaluation scenarios reflected when the virtual operation equipment is developed. Therefore, the training that reflects the newly developed operation techniques over time There is a problem that evaluation can not be performed.

As related prior art, Korean Patent Laid-Open Publication No. 2014-0087533 ('Manufacturing Facility Simulation System and Method Using Virtual Facility', published on July 09, 2014) is available.

1. Korean Patent Laid-Open Publication No. 2014-0087533 ('Simulation system and method for manufacturing facility using virtual facilities', published on July 09, 2014)

According to one embodiment of the present invention, it is possible to flexibly cope with situations that may arise in an actual field, to reduce the time required for calculation, to express movements in real time, to acquire operational know-how, A virtual operation apparatus and method of a rolling process that reflects an interlock condition are provided.

According to the first aspect of the present invention, there is provided an interlock system comprising: an interlock condition generation unit for generating an interlock condition that interrupts normal operation of a rolling mill from operation data of a rolling process in a preset inquiry period; And a simulation driving unit for simulating the rolling process by reflecting the interlock condition to the pre-generated rolling expression model, wherein the interlock condition generating unit generates the interlock condition for the rolling facility having the interlock occurrence frequency equal to or greater than a preset threshold value A virtual operation apparatus of a rolling process that reflects an interlock condition to be generated is provided.

According to a second aspect of the present invention, there is provided an interlock condition generating apparatus comprising: a first step of generating an interlock condition that interrupts normal operation of a rolling mill from operation data of a rolling process in a predetermined inquiry period; And a second step of simulating the rolling process by reflecting the interlock condition to the preformed rolling expression model in a simulation driving unit, wherein the first step includes the steps of: And generating the interlock condition with respect to the interlock condition.

According to the embodiment of the present invention, the rolling process is simulated by reflecting the interlock condition to the pre-formed rolling modification model, thereby flexibly coping with various situations that may occur in the actual field.

According to the embodiment of the present invention, the interlock conditions are reflected in the rolling equation model for the rolling facility having the interlock occurrence frequency equal to or higher than the threshold value, so that the time required for the calculation can be shortened and the motion can be expressed in real time.

Further, according to the embodiment of the present invention, by providing a authoring tool capable of directly configuring scenarios for operation evaluation, acquisition of operational know-how and development of latest operation technology can be advanced.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a virtual operation apparatus of a rolling process in which an interlock condition according to an embodiment of the present invention is reflected. Fig.
2 is a flow chart illustrating an operation for generating an interlock condition according to an embodiment of the present invention.
3 is a flowchart illustrating a simulation process according to an embodiment of the present invention.
4 is a flowchart illustrating a rolling equation model updating process according to an embodiment of the present invention.
5 is a view for explaining a process of selecting a rolling facility among 3D rolling facilities according to an embodiment of the present invention.
6 is a diagram for explaining a process of generating an operation evaluation scenario in the rolling facility selected in Fig. 5; Fig.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a virtual operation apparatus of a rolling process in which an interlock condition according to an embodiment of the present invention is reflected. Fig.

1, the virtual operation apparatus includes an on-site rolling facility 10, an HMI 21, an operation panel 22, an input / output processing unit 30, a simulator development unit 110, a virtual facility unit 120, A display unit 130, and an image display unit 40.

Specifically, the HMI (Human Machine Interface) 21 and the operation panel 22 are used to receive operation information necessary for the rolling process and operation values for operating various devices required for the rolling process.

The input / output processing section 30 is for the interface between the HMI 21 and the operation panel 22 and the virtual facility section 120 and includes an HMI signal processing section 31 for the HMI 21 and an operation panel signal And a processing unit 32.

The simulator development section 110 may include a work information database 111, an interlock condition generation section 112, an interlock condition database 113, a work data learning section 114 and a rolling equation model database 115 have.

More specifically, the operation data periodically transmitted from the rolling facility 10 is stored in the operation information database 111. The operation data learning unit 114 reads out the operation data from the operation rolling information database 111 based on the operation data stored in the operation information database 111 Rolling model of the rolling process can be produced. The resulting rolling equation model may be stored in the rolling equation model database 115.

4 is a flowchart illustrating a rolling equation model updating process according to an embodiment of the present invention.

Referring to FIG. 4, the updating process of the rolling equation model will be described. First, the operation data periodically transmitted from the rolling mill facility 10 is stored in the operation information database 111 in a weekly cycle (S401). Next, the operation data learning unit 114 analyzes the operation data stored in the operation information database 111 (S402), and updates the rolling expression model (S403). Thereafter, the rolling equation model database 115 may be modified by the updated rolling equation model (S404).

Particularly, according to one embodiment of the present invention, in the case where the above rolling process is a hot rolling process, the rolling modulus model assumes the steel type, thickness, length, width and differential pressure as input variables, , The wave height after calibration, the wave pitch after calibration, the center wave width, the wave width of the work side edge, the edge wave width of the drive side, and the telescope as the output variable.

Referring again to FIG. 1, the interlock condition generating unit 112 can generate an interlock condition that interferes with the normal operation of the rolling mill from the operation data of the rolling process in the predetermined inquiry period. In particular, the interlock condition generation unit 112 can generate an interlock condition for a rolling facility in which the number of interlock occurrence times is equal to or greater than a predetermined threshold value. The generated interlock condition may be stored in the interlock condition database 113. [ Here, the interlock refers to the fact that the rolling facility does not operate normally due to any one of a variety of factors such as failure of a hot metal detector (HMD), power failure, and the like. (E.g., an HMD failure state, a power unplugged state, etc.).

2 is a flowchart illustrating an operation for generating an interlock condition in the interlock condition generating unit 112 according to an embodiment of the present invention.

Hereinafter, a process of generating an interlock condition will be described in detail with reference to FIGS. 1 and 2. FIG.

Referring to FIGS. 1 and 2, the interlock condition generation unit 112 may set an inquiry period (D1 is a start point and D2 is an end point) (S201). The reason for setting the inquiry period is to use only the operation data at a desired point among a large number of the operation data stored in the operation information database 111. [

Next, the interlock condition generating unit 112 may set the interlock threshold value K (S202). Here, the interlock threshold K is a natural number, and the interlock conditions are only reflected in the rolling equation model for the rolling facilities where the interlock occurrence frequency exceeds the set interlock threshold K. By setting the threshold K in this way, there is an advantage that the time required for the operation can be shortened and the real-time motion can be expressed more quickly. It should be noted that the value of the interlock threshold value (K) is a natural number or a value that can be changed according to the operation time, so that a concrete value is not illustrated.

Next, the interlock condition generating unit 112 can acquire the operation data for the rolling facility within the inquiry period set above from among the operation data stored in the operation information database 111 (S203).

Next, the interlock condition generation unit 112 may determine whether the number of interlock occurrence of the rolling mill exceeds a predetermined interlock threshold K from the obtained operation data (S204). If the number of interlock occurrence times in the rolling facility exceeds the predetermined interlock threshold K, the interlock condition, i.e., the state of the factors causing the interlock is stored in the interlock condition database (S205). Otherwise, .

Next, the interlock condition generation unit 112 determines whether S204 to S205 have been performed for all the rolling facilities (S206). If S204 to S205 are not performed for all the rolling facilities, the operation data for the next rolling facility among the operation data within the inquiry period is acquired (S207), and the process can proceed to S204.

As described above, according to the embodiment of the present invention, the rolling process is simulated by reflecting the interlock condition to the pre-generated rolling equation model, so that it is possible to flexibly deal with situations that may occur in the actual field.

Referring again to FIG. 1, the virtual facility unit 120 may include a simulation driver 121, a 3D shape model database 122, a 3D work model database 124, and a simulation visualization unit 123.

Specifically, the simulation driver 121 reflects the interlock conditions stored in the interlock condition database 113 to the rolling equation model stored in the rolling equation model database 115, and outputs the manipulated values input from the HMI 21 or the operation panel 22 The rolling process can be simulated.

That is, the manipulated values input from the HMI 21 or the operation panel 22 are analyzed, and the simulation results, that is, the motion of the rolling equipment, the position and the shape of the strip, and the like are calculated based on the rolling expression model, To the operation evaluation unit 130 and the simulation visualization unit 123. The 3D shape model database 122 may be referred to in order to express the simulation result in a three-dimensional shape.

The above-described 3D shape model database 122 is a database that stores a 3D model of a rolling facility on-site created through 3D CAD design, 3D scanning, 3D modeling, etc., so as to enable real-time simulation.

Particularly, in the case where the rolling process is a hot temper rolling process, the 3D shape model database 122 stores shape information of strips that may occur during the hot rolling process in the field as width, thickness, length, center portion wave height, Center side wave width, work side edge wave height, work side edge wave pitch, work side edge wave width, drive side edge wave height, D drive side edge wave pitch, drive side edge wave width, telescope And the like, which are stored in a parametric manner.

3 is a flowchart illustrating a simulation process according to an embodiment of the present invention.

Hereinafter, the simulation process will be described in detail with reference to FIGS. 1 and 3. FIG.

1 and 3, when a button is pressed or a numerical value (operation value) is input in the HMI 21 or the operation panel 22 (S301), the manipulated value is input to the simulation driving unit 121 through the input / output processing unit 30, Lt; / RTI >

Then, the simulation driving unit 121 can calculate the simulation result, that is, the motion of the rolling equipment, the position and shape of the work, etc. based on the operation value (S302). The calculated simulation results may be transferred to the operation evaluation database 131 and the simulation visualizing unit 123 and stored (S303, S304). The simulation results stored in the operation evaluation database 131 may then be used to evaluate the operation of the operator or to create a scenario for the operational evaluation of the rolling facility. The simulation result transmitted to the simulation visualizing unit 123 can be output through the image displaying unit 40 after the rolling facility and the material are visualized (S305) by referring to the 3D material model in the simulation visualizing unit 123 .

1, the operation evaluation unit 130 may include an operation evaluation database 131, a scenario authoring tool 132, a scenario database 133, and an operation evaluation monitoring unit 134.

The operation evaluation database 131 can store the evaluation score of the operator given by the operation evaluation monitoring unit 134 in accordance with the operation result of the operator in addition to the simulation result transmitted from the simulation driving unit 121. [

Then, the scenario authoring tool 132 can create a scenario for operation evaluation of the rolling facility. Hereinafter, a process of generating a scenario will be described in detail with reference to FIGS. 5 and 6. FIG.

5 is a view for explaining a process of selecting a specific rolling facility among 3D rolling facilities according to an embodiment of the present invention, and FIG. 6 is a flowchart for explaining a process of generating an operation evaluation scenario in the rolling facility selected in FIG. FIG.

For example, as shown in Fig. 5, the paper prills 501, the calibrating roll 502, the skin pass mill 503, the up sheath 504, the tension reel 505, the exit coil car 506, When the skin pass mill 503 is selected in order to generate an operation evaluation scenario for a specific rolling facility such as the skin pass mill 503 in the hot rolling process including the hot rolling mill 507, The Create / Modify / Delete Scenario window appears. When the generation button is subsequently pressed, the operator can create a scenario for the operation evaluation as shown in FIG. The generated scenario may be stored in the scenario database 133. [

Specifically, the scenario authoring tool 132 may generate a scenario by dragging any of the elements of the authoring tool 610 on the left side to the right screen 620. The authoring tool 610 includes various graphics 611 to 613 and 618 for the flow of scenarios, a tool (N 614) for outputting text as a voice, a tool (T) 615 for visually outputting text, (H, 616) in the HMI (Human Machine Interface) screen or a tool (C, 617) for receiving input values of the operator panel.

6 shows an example of creation of the roll gap adjustment scenario of the skin pass mill, and the phrases such as "SPM training evaluation, HMI xxx is selected and the roll gap is adjusted" ). If the input Roll Gap adjustment value is larger than the predetermined value Y (624), it is determined whether or not the HMI xxx is selected (623) The predetermined score can be stored (627). If the input Roll Gap adjustment value is smaller than the predetermined value Y (624), "incorrect" may be outputted as voice 628 and text 629, and the predetermined score may be stored (630). The HMI xxx is the tag value of the position on the HMI, and the input value in the HMI screen can be used as a tag value of the HMI screen position. The format of the tag can be limited by the Boolean, Integer, Real, and so on. It should be noted that FIG. 6 is merely an example for facilitating understanding of the present invention, and may be implemented in various forms according to needs of a person skilled in the art.

Finally, the operation evaluation monitoring unit 134 can monitor the simulation results stored in the operation evaluation database 131. [

As described above, according to the embodiment of the present invention, by providing the authoring tool capable of directly configuring the scenario for the operation evaluation, it is possible to advance the operation know-how and develop the latest operation technology.

Used in embodiments of the present invention may refer to hardware components such as software, field-programmable gate array (FPGA) or ASIC. However, " to " is not limited to software or hardware, and may be configured to be in an addressable storage medium and configured to play back one or more processors. Thus, by way of example, 'parts' may refer to components such as software components, object-oriented software components, class components and task components, and processes, functions, , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and components may be further combined with a smaller number of components and components or further components and components. In addition, the components and components may be implemented to play back one or more CPUs in a device or a secure multimedia card.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be self-evident.

10: Field rolling facility 21: HMI
22: Operation panel 30: Input /
31: HMI signal processing unit 32: Operation panel signal processing unit
40: image display unit 110: simulator development unit
111: Operation information database 112: Interlock condition generating unit
113: Interlock condition database 114: Operation data learning unit
120: virtual equipment section 121: simulation driving section
122: 3D shape model database 123: Simulation visualization part
124: 3D material model database 130: Operation evaluation section
131: operation evaluation database 132: scenario authoring tool
133: scenario database 134: operation evaluation monitoring unit

Claims

An interlock condition generating unit for generating an interlock condition that interrupts normal operation of the rolling mill from the operation data of the rolling process within the predetermined inquiry period; And
And a simulation driving unit for simulating the rolling process by reflecting the interlock condition to the preformed rolling expression model,
Wherein the interlock condition generating unit reflects an interlock condition for generating the interlock condition for a rolling facility in which the number of interlock occurrence times is equal to or greater than a predetermined threshold value.

The method according to claim 1,
The interlock condition includes:
A virtual operation device of a rolling process that reflects interlock conditions, which are the states of the factors causing the interlock in the rolling facility.

The method according to claim 1,
The virtual operation apparatus of the rolling process,
And a scenario authoring tool for generating a scenario for operation evaluation of the rolling facility.

The method of claim 3,
The scenario authoring tool comprises:
Scenarios are constructed using authoring tools according to the flow for operation evaluation,
The authoring tool includes a drawing for showing a scenario flow, a tool for outputting text as a voice, a tool for visually outputting text, and an input value or an input value of an operation panel in an HMI (Human Machine Interface) screen A virtual operation device of the rolling process that reflects the interlock condition including the tool for the rolling process.

5. The method of claim 4,
The input value in the HMI screen is,
And the interlock condition using the tag value of the HMI screen position as an intermediate.

The method according to claim 1,
The rolling process is a hot rolling process,
The rolling model is a model of the hot rolling process,
The thickness, length, width, calibrated wave height, calibrated wave pitch, center wave width, wave width of the work side edge, edge wave width of the drive side, A virtual operation device of a rolling process that reflects interlock conditions, which is a model in which the telescope is used as an output variable after calibration.

A first step of generating an interlock condition interfering with normal operation of the rolling mill from the operation data of the rolling process in the predetermined inquiry period in the interlock condition generating section; And
And a second step of simulating the rolling process by reflecting the interlock condition to the preformed rolling expression model in the simulation driving section,
Wherein the first step reflects an interlock condition including a step of generating the interlock condition for a rolling facility in which the number of interlock occurrence times is equal to or greater than a preset threshold value.

8. The method of claim 7,
The interlock condition includes:
A virtual operation method of a rolling process that reflects interlock conditions, which are the states of the factors causing the interlock in the rolling facility.

8. The method of claim 7,
The virtual operation method of the rolling process includes:
Further comprising the step of creating, in the scenario authoring tool, a scenario for operational evaluation of the rolling mill.

10. The method of claim 9,
The step of generating the scenario comprises:
Constructing a scenario using an authoring tool according to a flow for operational evaluation,
The authoring tool includes a drawing for showing a scenario flow, a tool for outputting text as a voice, a tool for visually outputting text, and an input value or an input value of an operation panel in an HMI (Human Machine Interface) screen A method of virtual operation of a rolling process that reflects the interlock conditions including the tool.

11. The method of claim 10,
The input value in the HMI screen is,
A virtual operation method of a rolling process that reflects an interlock condition using a tag value of the HMI screen position as an intermediate.

8. The method of claim 7,
The rolling process is a hot rolling process,
The rolling model is a model of the hot rolling process,
The thickness, length, width, calibrated wave height, calibrated wave pitch, center wave width, wave width of the work side edge, edge wave width of the drive side, A virtual operation method of a rolling process that reflects interlock conditions, which is a model in which the telescope is used as an output variable after calibration.