KR20010057745A - Method of simulation for estimate of control performance of line drive control in cold rolled mills - Google Patents
Method of simulation for estimate of control performance of line drive control in cold rolled mills Download PDFInfo
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- KR20010057745A KR20010057745A KR1019990061143A KR19990061143A KR20010057745A KR 20010057745 A KR20010057745 A KR 20010057745A KR 1019990061143 A KR1019990061143 A KR 1019990061143A KR 19990061143 A KR19990061143 A KR 19990061143A KR 20010057745 A KR20010057745 A KR 20010057745A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/02—Tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
Abstract
Description
본 발명은 냉연/표면처리 설비의 라인 연동구동제어 로직에 대한 제어성능을 예측하는 전산해석 로직에 관한 것으로, 특히 냉연/표면처리 설비의 라인 연동 구동제어(Line Drive Control) 시스템 설계시 연동구동제어 로직의 제어성능 및 정확도를 사전에 검증하고 제어 로직 설계상 오류를 파악하여 수정 개선함으로써 정확한 연동구동제어 로직을 수행하기에 적당하도록 한 냉연설비의 라인 연동구동제어 성능예측 방법에 관한 것이다.The present invention relates to a computational analysis logic for predicting the control performance of the line interlocking drive control logic of the cold rolling / surface treatment equipment, in particular interlocking drive control when designing a line drive control system of the cold rolling / surface treatment equipment The present invention relates to a method for predicting the performance of line interlocking drive control of a cold rolling facility, which is suitable for performing accurate interlocking drive control logic by verifying the control performance and accuracy of logic in advance and identifying and correcting errors in control logic design.
일반적으로 냉간/표면처리 설비는 열간압연(열연) 공정에서 처리된 열연 코일(Coil)에 대하여 냉간압연 및 표면처리 등 냉간압연(냉연) 공정을 연속적으로 실시하는 연속공정 설비이다.In general, cold / surface treatment facilities are continuous process equipment that continuously performs cold rolling (cold rolling) processes, such as cold rolling and surface treatment, on hot rolled coils treated in a hot rolling (hot rolling) process.
도1은 일반적인 냉연/표면처리 설비의 개략적인 롤(Roll) 구성도로서, 이러한 냉간압연 공정 중 연속소둔 설비의 개략적인 설비구성을 나타낸 것이다.FIG. 1 is a schematic roll configuration diagram of a general cold rolling / surface treatment plant and shows a schematic arrangement of a continuous annealing plant during such a cold rolling process.
냉연/표면처리 설비는 일반적으로 열연 코일 및 앞 공정에서 처리된 철강 코일을 강판(Strip) 형태로 다시 푸는 Uncoiler(Payoff Reel), 이 강판을 특정 공정으로 이송하기 위하여 롤과 같은 구동기계장치, 강판을 특정 공정으로 처리하기 위한 각종 프로세스(Process) 장치, 그리고 이러한 공정을 다 마친 후 강판을 코일형태로 다시 권취하는 권취기(Coiler : Tension Reel) 등으로 구성된다.Cold rolling / surface treatment facilities typically use hot rolled coils and uncoilers (payoff reels) to re-screw the steel coils processed in the previous process in the form of strips, drive mechanisms such as rolls to transfer these steel sheets to specific processes, and steel sheets. It is composed of various process apparatuses for treating the process to a specific process, and a coiler (tension reel) for winding the steel sheet back to the coil form after completing such a process.
냉연/표면처리 설비에서는 강판을 연속적으로 이송하기 위하여 각종 롤을 구동시켜야 하는데, 이러한 롤에 대하여 속도 및 장력제어를 실행하는 장치를 라인 구동 시스템이라 하고, 이러한 라인 구동 시스템을 제어하는 장치를 라인 연동구동 제어시스템(Line Drive Control System)이라 한다.In the cold rolling / surface treatment facility, various rolls must be driven in order to continuously transfer the steel sheet. A device that executes speed and tension control for these rolls is called a line drive system, and a device that controls the line drive system is a line interlocking device. It is called Line Drive Control System.
이러한 제어 시스템은 냉연/표면처리 설비의 정상작동을 가름하는 중요한 핵심장치로서, 구동 제어 로직에 오류가 있다면, 냉연/표면처리 설비의 강판 이송시 강판의 속도제어 및 장력제어가 불량하여 조업에 악영향을 미칠뿐만 아니라, 철강제품 표면에 슬립 결함(Slip Scratch) 등의 결함을 발생시켜 철강제품의 부가가치를 손상시키게 된다.This control system is an important key device to determine the normal operation of the cold rolling / surface treatment equipment. If there is an error in the driving control logic, the speed control and tension control of the steel sheet during the transportation of the cold rolling / surface treatment equipment will be adversely affected. In addition to defects such as slip scratches on the surface of steel products, the added value of steel products is damaged.
따라서 본 발명은 이러한 라인 구동 제어 장치에 대한 제어로직을 설계하고,설계된 제어기의 성능을 예측할 수 있는 전산 로직설계에 관한 것으로, 냉연/표면처리 설비에 대하여 라인 연동구동제어(Line Drive Control) 로직 설계 및 속도/장력 제어성능 예측에 활용된다.Accordingly, the present invention relates to a computational logic design for designing a control logic for such a line drive control device and predicting the performance of the designed controller, and designing a line drive control logic for a cold rolling / surface treatment facility. And speed / tension control performance prediction.
종래에는 철강사 및 철강설비 전문엔지니어링사의 경우, 냉연/표면처리 설비의 라인 연동구동제어 로직(Line Drive Control Logic) 설계에 관하여, 단일 롤 구동에 대한 구동제어 예측 모델 및 시뮬레이션(Simulation) 기법은 자체 개발하여 롤 구동 제어기 설계에 활용하고 있다["On the Analysis Method of Vibration Problems of Iron & Steel Machine Drive System", MHI 중공기보, Vol. 21, No.4, 1984].Conventionally, for steel companies and engineering companies specialized in steel facilities, drive control prediction models and simulation techniques for single roll driving are developed in-house with respect to the design of line drive control logic of cold rolling / surface treatment facilities. [On the Analysis Method of Vibration Problems of Iron & Steel Machine Drive System ”, MHI Hollow Press, Vol. 21, No. 4, 1984].
그러나 본 발명과 같이 라인 전체에 대한 연동구동제어 성능예측 모델 및 시뮬레이션 방법은 개발 적용되고 있지 않다. 따라서 현재 종래의 전문설비 메이커에서는 이러한 라인구동시스템 설계시, 단일 롤구동 예측결과에 의존하고 있으며, 연동구동에 대한 제어성능에 관한 한 경험 및 직관, 그리고 이전에 공급된 설비의 구동제어 실적을 바탕으로 설계에 임하고 있기 때문에, 간혹 공급된 라인의 구동제어 로직에 오류가 발생하여 실 라인이 오작동되는 사례도 빈번히 발생하고 있는 문제점이 있었다.However, the interlock drive control performance prediction model and simulation method for the entire line as in the present invention have not been developed and applied. Therefore, the current professional equipment manufacturer relies on single roll drive prediction result when designing such a line drive system, and based on experience and intuition regarding the control performance of the interlock drive, and the performance of the drive control of the previously supplied equipment. As a result of the design, the error occurs in the drive control logic of the supplied line occasionally, there is a problem that often causes a malfunction of the seal line.
이에 본 발명은 상기와 같은 종래의 제반 문제점을 해소하기 위해 제안된 것으로, 본 발명의 목적은 냉연/표면처리 설비의 라인 연동 구동제어 시스템 설계시 연동구동제어 로직의 제어성능 및 정확도를 사전에 검증하고 제어 로직 설계상 오류를 파악하여 수정 개선함으로써 정확한 연동구동제어 로직을 수행할 수 있는 냉연설비의 라인 연동구동제어 성능예측 방법을 제공하는 데 있다.Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to verify in advance the control performance and accuracy of the interlocking drive control logic when designing a line interlocking drive control system of a cold rolling / surface treatment facility. In addition, the present invention provides a method for predicting the performance of the line interlocking drive control of a cold rolling facility capable of performing accurate interlocking drive control logic by identifying and correcting errors in control logic design.
상기와 같은 목적을 달성하기 위하여 본 발명의 일실시예에 의한 냉연설비의 라인 연동구동제어 성능예측 방법은,In order to achieve the above object, a method for predicting performance of a line linkage driving control of a cold rolling facility according to an embodiment of the present invention,
속도제어기와 장력제어기를 구비한 냉연/표면처리 설비의 라인 연동구동제어 시스템에 있어서, 냉연/표면처리 설비의 라인연동구동제어 로직에서 롤 구동모터에 장착된 속도센서로부터 검출된 속도 신호출력을 상기 속도제어기에 피드백하여 라인 속도를 제어하고, 롤의 베어링 블록 하부에 장착된 장력검출센서로부터 검출된 장력신호 출력을 상기 장력제어기에 피드백하여 강판의 장력을 제어하는 것을 그 기술적 구성상의 특징으로 한다.A line interlock drive control system of a cold rolling / surface treatment facility equipped with a speed controller and a tension controller, wherein the speed signal output detected from the speed sensor mounted on the roll drive motor in the line interlock drive control logic of the cold rolling / surface treatment facility is described. The technical feature is to control the line speed by feeding back to the speed controller and controlling the tension of the steel sheet by feeding back the tension signal output from the tension detection sensor mounted on the bearing block of the roll to the tension controller.
도1은 일반적인 냉연/표면처리 설비의 개략적인 롤(Roll) 구성도이고,1 is a schematic roll configuration diagram of a typical cold rolling / surface treatment facility,
도2는 본 발명의 일실시예에 의한 냉연설비의 라인 연동구동제어 성능예측 방법이 적용된 라인 연동구동제어 시스템의 구성도이며,2 is a configuration diagram of a line interlocking drive control system to which a method for predicting performance of a line linkage driving control of a cold rolling mill according to an embodiment of the present invention is applied;
도3은 도2의 라인 연동구동제어 블록선도이고,3 is a line interlocking drive control block diagram of FIG. 2;
도4는 도2에 의한 라인 연동구동제어의 성능예측 결과를 보인 그래프이다.4 is a graph showing performance prediction results of the line interlocking drive control shown in FIG.
이하, 상기와 같은 본 발명 냉연설비의 라인 연동구동제어 성능예측 방법의 기술적 사상에 따른 일실시예를 설명하면 다음과 같다.Hereinafter, an embodiment according to the technical idea of the method for predicting the performance of the line interlocking drive control of the present invention as described above is as follows.
먼저 도1에는 냉연/표면처리 설비의 해당하는 임의의 라인 구성을 대략적으로 나타내었다.First, FIG. 1 schematically shows the corresponding arbitrary line configuration of a cold rolling / surface treatment plant.
냉연/표면처리 설비에서는 주로 스트립(Strip)을 이송하는 Roll Arrangement가 주요 구성장치의 하나이다. 전술한 바와 같이, 라인은 Uncoiler(Payoff Reel : POR)로부터 최종적으로 Coiler(Tension Reel)로 스트립을 이송하는 시스템으로 되어 있다. 이때 스트립을 이송하기 위하여 각 위치에 있는 각종 롤(Roll)을 구동시키게 된다.In cold rolling / surface treatment facilities, the roll arrangement that transfers strips is one of the main components. As described above, the line is a system for transferring the strip from the Uncoiler (Payoff Reel: POR) to the Coiler (Tension Reel). At this time, in order to transport the strip to drive the various roll (Roll) in each position.
그런데 냉연/표면처리 설비는 연속적으로 스트립을 처리하는 설비이기 때문에 라인 내 설치된 모든 롤이 동시에 회전하게 되며, 이때 모든 롤의 회전시 선속도가 동일해야 한다.However, since the cold rolling / surface treatment equipment is a strip processing equipment, all the rolls installed in the line rotate at the same time.
도2는 본 발명의 일실시예에 의한 냉연설비의 라인 연동구동제어 성능예측 방법이 적용된 라인 연동구동제어 시스템의 구성도로서, 라인의 모든 롤을 동시에 구동시키는 연동구동 시스템을 나타낸 것이다.2 is a configuration diagram of a line interlocking drive control system to which a method for predicting line interlocking drive control performance of a cold rolling facility according to an embodiment of the present invention is applied, and shows an interlocking drive system for simultaneously driving all rolls of a line.
또한 라인의 주행시 특정 위치에 각각 다른 장력이 설정되는데, 속도와 마찬가지로 스트립 장력도 매우 정확하게 제어되어야 한다.In addition, different tensions are set at specific positions when the line is driven, and, like speed, strip tension must be controlled very accurately.
한편 라인의 속도제어는 롤 구동 모터에 장착된 속도센서(PLG)를 사용하여 검출된 속도신호를 속도제어기에 피드백하는 폐쇄루프(Closed Loop) 제어로써 수행하며, 라인 내 이송되는 스트립의 장력제어는 특정 롤의 Bearing Block 하단에 장착된 장력검출센서(Tension Meter : TM)를 사용하여 검출된 장력신호를 장력제어기에 피드백하는 폐쇄루프 제어로서 수행한다. 도1에서는 라인 중간 지점에 Tension Meter를 한 개 설치된 것으로 가정하였으며, 도2에는 이 Tension Meter에서 검출된 장력신호가 Tension Reel의 구동 모터의 장력제어기로 피드백되어 이 지점에 설정된 장력을 일정하게 제어하도록 구성하였다.Meanwhile, the speed control of the line is performed by closed loop control which feeds back the speed signal detected using the speed sensor (PLG) mounted on the roll driving motor to the speed controller. Tension meter (TM) mounted on the bottom of the bearing block of a specific roll is used as closed loop control to feed back the detected tension signal to the tension controller. In FIG. 1, it is assumed that one tension meter is installed at a middle point of the line. In FIG. 2, the tension signal detected by the tension meter is fed back to the tension controller of the drive motor of the tension reel to control the tension set at this point constantly. Configured.
도3은 도2의 라인 연동구동제어 블록선도로서, 이렇게 가정한 라인에 대하여 도2와 같이 구성된 제어시스템을 적용하는 경우 라인 속도제어 및 장력제어를 수행하게 될 때의 제어실행 결과를 예측할 수 있는 구동시스템 제어 모델에 대한 제어블록 구성을 나타낸 것이다.FIG. 3 is a block diagram of the line interlocking drive control of FIG. 2. When the control system configured as shown in FIG. 2 is applied to the assumed line, the control execution result when the line speed control and the tension control are performed can be predicted. This shows the control block configuration for the drive system control model
그래서 도3의 하단에는 장력제어 루프가 구성되어 있는 것을 볼 수 있다. 도3은 Payoff Reel 및 구동 모터 제어기, 3개의 구동 Roll에 대한 롤 및 구동제어기, 그리고 Tension Reel 및 구동제어기가 각각 나타나있다.Thus, it can be seen that the tension control loop is configured at the bottom of FIG. 3 shows a payoff reel and drive motor controller, rolls and drive controllers for three drive rolls, and a tension reel and drive controller, respectively.
이와 같이 구성된 제어 블록을 전산기를 이용하여 연산하게 되면, 도4의 라인 연동구동제어의 성능예측 결과를 보인 그래프에서와 같은, 제어 예측결과를 얻을 수 있다.When the control block constructed as described above is calculated using a computer, control prediction results can be obtained as shown in a graph showing performance prediction results of the line interlocking drive control in FIG.
그래서 도1에 나타낸 라인으로써 각각의 롤에 의하여 스트립이 이송되는 경우 도2의 제어시스템으로 라인이 구동제어되는 경우에 대하여 라인 속도 제어 현황 및 각 롤 사이에 있는 스트립에 작용하는 장력실적을 예측한 결과를 도4에 각각 보였다.Therefore, when strips are transported by each roll as the line shown in FIG. 1, the state of line speed control and the tension performance acting on the strip between each roll are predicted for the case where the line is driven by the control system of FIG. The results are shown in FIG. 4, respectively.
이처럼 본 발명은 냉연/표면처리 설비의 라인 연동 구동제어 시스템 설계시 연동구동제어 로직의 제어성능 및 정확도를 사전에 검증하고 제어 로직 설계상 오류를 파악하여 수정 개선함으로써 정확한 연동구동제어 로직을 수행하게 되는 것이다.As such, the present invention verifies the control performance and accuracy of the interlocking drive control logic in advance in designing a line interlocking drive control system of a cold rolling / surface treatment facility, and performs accurate interlocking drive control logic by identifying and correcting errors in the control logic design. Will be.
이상에서 본 발명의 바람직한 실시예를 설명하였으나, 본 발명은 다양한 변화와 변경 및 균등물을 사용할 수 있다. 본 발명은 상기 실시예를 적절히 변형하여 동일하게 응용할 수 있음이 명확하다. 따라서 상기 기재 내용은 하기 특허청구범위의 한계에 의해 정해지는 본 발명의 범위를 한정하는 것이 아니다.Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.
이상에서 살펴본 바와 같이, 본 발명에 의한 냉연설비의 라인 연동구동제어 성능예측 방법은 냉연/표면처리 설비의 라인 연동구동제어 로직 설계시 사전에 전산 시뮬레이션을 통하여 라인 연동구동 제어성능을 예측할 수 있을 뿐만 아니라 정확한 제어 로직구성을 가능하게 함으로서 제어기 설계시 시행착오를 감소시키고 구동제어의 정밀도를 향상시킬 수 있는 효과가 있게 된다.As described above, the method for predicting line interlock drive control performance of a cold rolling facility according to the present invention can predict the line link drive control performance through computer simulation in advance when designing the line interlock drive control logic of a cold rolling / surface treatment facility. In addition, by enabling accurate control logic configuration, it is possible to reduce trial and error in the controller design and improve the precision of the drive control.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990061143A KR20010057745A (en) | 1999-12-23 | 1999-12-23 | Method of simulation for estimate of control performance of line drive control in cold rolled mills |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019990061143A KR20010057745A (en) | 1999-12-23 | 1999-12-23 | Method of simulation for estimate of control performance of line drive control in cold rolled mills |
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| KR20010057745A true KR20010057745A (en) | 2001-07-05 |
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| KR1019990061143A KR20010057745A (en) | 1999-12-23 | 1999-12-23 | Method of simulation for estimate of control performance of line drive control in cold rolled mills |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100789189B1 (en) * | 2006-12-27 | 2008-01-02 | 한국파워트레인 주식회사 | Torque converter for vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720817A (en) * | 1980-07-15 | 1982-02-03 | Toshiba Corp | Line driving control device |
| JPS6083719A (en) * | 1983-10-12 | 1985-05-13 | Sumitomo Metal Ind Ltd | Plate thickness controlling method of strip mill |
| JPH0446619A (en) * | 1990-06-12 | 1992-02-17 | Toshiba Corp | Controller for inlet side bridle on all continuous type cold rolling mill |
| JPH05138222A (en) * | 1991-11-25 | 1993-06-01 | Nkk Corp | Automatic tension controller |
-
1999
- 1999-12-23 KR KR1019990061143A patent/KR20010057745A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720817A (en) * | 1980-07-15 | 1982-02-03 | Toshiba Corp | Line driving control device |
| JPS6083719A (en) * | 1983-10-12 | 1985-05-13 | Sumitomo Metal Ind Ltd | Plate thickness controlling method of strip mill |
| JPH0446619A (en) * | 1990-06-12 | 1992-02-17 | Toshiba Corp | Controller for inlet side bridle on all continuous type cold rolling mill |
| JPH05138222A (en) * | 1991-11-25 | 1993-06-01 | Nkk Corp | Automatic tension controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100789189B1 (en) * | 2006-12-27 | 2008-01-02 | 한국파워트레인 주식회사 | Torque converter for vehicle |
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