EP1390821B1 - Verfahren zur führung eines stahlverarbeitungsprozesses, insbesondere eines warmwalzprozesses - Google Patents
Verfahren zur führung eines stahlverarbeitungsprozesses, insbesondere eines warmwalzprozesses Download PDFInfo
- Publication number
- EP1390821B1 EP1390821B1 EP02742971A EP02742971A EP1390821B1 EP 1390821 B1 EP1390821 B1 EP 1390821B1 EP 02742971 A EP02742971 A EP 02742971A EP 02742971 A EP02742971 A EP 02742971A EP 1390821 B1 EP1390821 B1 EP 1390821B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- level
- techlevel
- superlevel
- control
- subprocesses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 25
- 239000010959 steel Substances 0.000 title claims abstract description 25
- 238000005098 hot rolling Methods 0.000 title claims abstract description 10
- 238000012545 processing Methods 0.000 title abstract description 19
- 238000004801 process automation Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 2
- 238000005097 cold rolling Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000003908 quality control method Methods 0.000 claims description 2
- 238000009749 continuous casting Methods 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000005457 optimization Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 239000012467 final product Substances 0.000 description 3
- 238000004886 process control Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
-
- 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
Definitions
- the invention relates to a method for guiding a steel processing process, in particular a hot rolling process, according to the preamble of claim 1 and takes the priority of the German patent application 101 22 322.6 (DE-101 22 322 A), to the content of which reference is made.
- Level 4 refers to management (Production planning) and level 3 on production coordination, such as material tracking, scheduling and quality control.
- process automation takes place.
- the technological process is modeled in models, for example the best possible stitch plan calculation and as accurate as possible Allow default setting (setup) of the system. This is mostly about relatively complicated physical models with an adaptation algorithm, which adapts these models to reality using measurement data.
- a special The task of Level 2 in many automation systems is the Calculation of the static control loop gain factors (control gains) coming from level 1, e.g. B. for Störssensclien (feedforward controls) are needed.
- the Level 1 level includes the Basic automation with all basic controls and technological Controls and control circuits as well as the visualization.
- To the base control loops include, for example, position, force and speed controls.
- Technological regulations are those which compliance with the required product quality parameters (e.g., thickness, cross-section, Flatness).
- the level 0 level are the drive systems and the drive control settled.
- each Steel processing stage is determined by the parameters of as a starting material inserted band, by the functional state of the tools, for example, the rollers, and by the technological conditions, such as rolling speed, tension, degree of deformation and temperature distribution over the width of the band in this sub-process.
- the present invention is based on the object the efficiency of future automation solutions in the steel industry to optimize and increase product quality for the end customer.
- the aim of the entire processing chain is to achieve optimal results End product with the best quality and minimum cost. Also need the results of the intermediate stages also have certain cost and quality criteria fulfill.
- TechLevel in which individual automation, control and and control operations of the steel processing process become the existing separation between the levels (Level 0, Level 1 and Level 2).
- the process automation, basic automation and drive control thus take place in one plane.
- This merge is preferably suitable for a steel processing process, in particular a rolling process, since here a complex multi-size system with strict couplings, whereby the flow of information between the individual levels is hindered by the multiple levels so far.
- advantageously, is through the summary of these individual levels reached to the TechLevel that this new type of litigation with the Today's trend of automation in the steel industry towards Complete systems goes along. For many years, many plant engineers have been trying with more or less success, complete automation systems including drive control.
- the automation hardware offers ever faster computing speeds, so the whole techlevel is on a single hardware can run and it is no longer necessary, as in the prior art to run the layers on separate hardware. Also does the summary the individual automation, control and control processes the steel processing process in a single common Level the exchange of many signals between levels superfluous. Thus, then also model-based regulations can be realize faster and clearer. The multiple, double Modeling on the first levels (Level 1 and Level 2) can thus be omitted or even more closely meshed than before.
- the SuperLevel control introduces the influence of the subordinate TechLevel control by specifying suitable coordination quantities for through the respective sub-process, so that the behavior of the overall process is optimal with respect to a criterion to be defined.
- the modified and new structure of the method for conducting a steel processing process, especially for hot rolling, with the new common level TechLevel and the superordinate level SuperLevel is supplemented with the known higher levels production coordination as well as management.
- This is the steel processing process considered as a so-called "large control system".
- Exist here several relatively independent subsystems through interactions or linked by shared resources.
- the objective function subgoals exist for the individual subsystems, which is a for the entire system co-determine the existing overall goal, whereby the Partial goals among themselves and with the overall goal partially in contradiction can stand.
- the system possesses with respect to the control device a functionally decentralized or hierarchical structure of the control devices or control algorithms.
- FIG. 1 shows a schematic diagram of the control system according to the invention. and regulatory structure, which is essentially the superposition of a second level SuperLevel over a new first common level TechLevel shows.
- the common level TechLevel exhibits a variety of parallel to each other sub-processes, locally and globally with each other are coupled and are each connected to setup regulators.
- the setup knobs are optimized locally within the TechLevel level. This local Optimization of subsystems consisting of different subprocesses is then with a global optimization, regulatory and control strategy connected within the SuperLevel level. An additional global one Coupling of the subsystems takes place within the TechLevel level.
- This structure takes into account the fact that the sum of the individual options In general, subprocesses do not necessarily have the overall optimum is. This should bring the quality of the final product in the foreground and in considering and defining the quality of intermediates received. In this case, the coupling structure between the different Subprocesses within the common level TechLevel considered become. In particular, when control value limits are reached in individual sub-processes, the setpoint specifications for the sub-processes be reversed by the SuperLevel so that the manipulated variable limitations be respected.
- the overall control structure thus reflects the internal physical structure of the process. For the realization of the individual levels are models of varying detail and scopes necessary to the complexity of the optimization task to reduce.
- the detail of the models starts out from the level TechLevel on the levels SuperLevel, product coordination and management, whereas the scope of the Models increase. Describe the models used for the SuperLevel the overall process behavior of the process thus the interaction of the sub-processes (couplings) and therefore do not have to be detailed. Suitable models would be qualitative models (e.g. Petri nets, deterministic or stochastic automata) or models based on algebraic equations. In contrast to this describe the models on the TechLevel are very local to the respective subprocess detailed, for example by DGL or NN or fuzzy approaches.
- the SuperLevel controller takes over the influence the subordinate TechLevel controller by specifying appropriate Coordination variables for the respective sub-process, so that the behavior of the overall process with respect to a criterion to be defined optimally is.
- the SuperLevel controller is intended to intervene in particular when actuator limitations be reached in a subprocess or unexpected there Disruptions occur, for example, a shift in the operating point as a result of a thermal crowning bring with it.
- the set values once from a static point of view be determined by the SuperLevel controller a dynamic Intervention during the process.
- FIG. 2 shows a schematic diagram of the control system according to the invention. and control structure applied to a hot rolling process WWW, which has a roughing road, a finishing train and a cooling section with reel as subsystems. It is also possible, for example, subsystems a casting machine, a compact steel production (CSP, Compact Steel Production) and a cooling section with reel or subsystems a continuous caster, a hot rolling mill and a cold rolling mill to operate over the inventive method.
- WWW hot rolling process
- FIG. 2 shows a schematic diagram of the control system according to the invention. and control structure applied to a hot rolling process WWW, which has a roughing road, a finishing train and a cooling section with reel as subsystems.
- subsystems a casting machine, a compact steel production (CSP, Compact Steel Production) and a cooling section with reel or subsystems a continuous caster, a hot rolling mill and a cold rolling mill to operate over the inventive method.
- CSP Compact Steel Production
- FIG 3 is a schematic diagram of the cross-over hierarchical control and regulation structure in application on a coordinated flatness and cooling control hot strip mill WB shown.
- the aim of the coordinated flatness and cooling control is the flatness of the rolled hot strip, which is measured behind the cooling, to optimize.
- the hot strip mill WB as well as the cooling section are going through subordinate regulations WB model and model cooling stabilized. These subordinate regulations are therefore part of the TechLevel.
- the hot strip mill WB supplies a metal strip due to the subordinate control WB model with a certain flatness error. This flatness error is one Disturbance variable y, for the subsequent cooling process.
- the goal of the coordinated Flatness control in the SuperLevel is the setpoint of the subordinate Adjust regulations WB model and model cooling in TechLevel so that the flatness behind the cooling section the given requirements equivalent.
- the flatness behind the cooling section is a controlled variable of the Super levels
- a model predictive control is used as a control of the super-level.
- the MPC is embedded in an Intemal Model Control (IMC) structure with feedforward control G stw and G stk .
- IMC Intemal Model Control
- a prediction of the controlled variables in the dynamic optimization OPT is included, which goes beyond dead time between the process stages.
- IMC Intemal Model Control
- These simplified models describe the essential dynamic input / output behavior of the hot strip mill and the cooling section, which are necessary for dynamic coordination of the two processes. This reduces the modeling effort and simplifies the control task.
- non-linear models are used for the models.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- General Factory Administration (AREA)
- Heat Treatment Of Steel (AREA)
Description
- Fig. 1
- ein prinzipielles Schema der erfindungsgemäßen Steuerungs- und Regelungsstruktur,
- Fig. 2
- ein prinzipielles Schema der erfindungsgemäßen Steuerungs- und Regelungsstruktur in Anwendung auf einen Warmwalzprozess und
- Fig. 3
- ein prinzipielles Schema der erfindungsgemäßen Steuerungs- und Regelungsstruktur in Anwendung auf eine koordinierte Planheits- und Kühlungsregelung Warmbreitbandstraße..
Claims (8)
- Verfahren zur Führung eines Stahlverarbeitungsprozesses, insbesondere eines Warmwalzprozesses, in dem die Automatisierungs-, Regelungs- und Steuerungsvorgänge hierarchischen Ebenen zugeordnet werden, dadurch gekennzeichnet, daßdie einzelnen Automatisierungs-, Regelungs- und Steuerungsvorgänge der Teilprozesse koordinierte Planheits- und Kühlungsregelung in einer gemeinsamen ersten Ebene TechLevel zusammengefasst werden, in der die Prozessautomatisierung, die Basisaustomatisierung und die Antriebsregelung mit TechLevel-Reglem erfolgt, undder gemeinsamen ersten Ebene TechLevel eine zweite Ebene SuperLevel übergeordnet wird, die eine Steuer-, Regelungs- und Optimierungsebene zur Koordinierung der unterlagerten Regelungsebenen basierend auf einer hierarchisch gekoppelten Optimierung mit einem SuperLevel-Regler ist, undder SuperLevel-Regler die Beeinflussung der untergeordneten TechLevel-Regler durch Vorgabe geeigneter Koordinierungsgrößen für den jeweiligen Teilprozeß durchführt, so daß das Verhalten des Gesamtprozesses bezüglich eines zu definierenden Kriteriums optimal ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der SuperLevel-Regler dynamisch in den Prozessablauf eingreift.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß von der zweiten Ebene SuperLevel bei Erreichen von Stellgrößenbeschränkungen in einzelnen Teilprozessen der ersten Ebene TechLevel über Regler die Sollwertvorgaben für die Teilprozesse in der ersten Ebene so umgesteuert werden, daß die Stellgrößenbeschränkungen eingehalten werden.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als weitere Teilprozesse eine Vorstrasse, eine Fertigstrasse und eine Kühlstrecke mit in der gemeinsamen ersten Ebene TechLevel zusammengefasst werden und die ihnen zugeordneten TechLevel-Regler durch den SuperLevel-Regler durch Vorgabe geeigneter Koordinierungsgrößen beeinflußt werden, so daß das Verhalten des Gesamtprozesses bezüglich eines zu definierenden Kriteriums optimal ist.
- Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß als weitere Teilprozesse einer Gießmaschine, einer kompakten Stahlproduktion i.e. CSP, Compact Steel Production und einer Kühlstrecke mit Haspel in der gemeinsamen ersten Ebene TechLevel zusammengefasst werden und die ihnen zugeordneten TechLevel-Regler durch den SuperLevel-Regler durch Vorgabe geeigneter Koordinierungsgrößen beeinflußt werden, so daß das Verhalten des Gesamtprozesses bezüglich eines zu definierenden Kriteriums optimal ist.
- Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet daß als weitere Teilprozesse einer Stranggießanlage, eines Warmwalzwerkes und eine Kaltwalzwerks in der gemeinsamen ersten Ebene TechLevel zusammengefasst werden und die ihnen zugeordneten TechLevel-Regler durch den SuperLevel-Regler durch Vorgabe geeigneter Koordinierungsgrößen beeinflußt werden, so daß das Verhalten des Gesamtprozesses bezüglich eines zu definierenden Kriteriums optimal ist.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß in einer zusätzlichen, der zweiten Ebene (SuperLevel) übergeordneten dritten Ebene Level 3 Informationen bezüglich der Produktionskoordination, wie beispielsweise Materialverfolgung, Terminplanung, Qualitätskontrolle, verarbeitet werden und in einer weiteren, der dritten Ebene Level 3 übergeordneten, vierten Ebene Level 4 Informationen bezüglich der Produktionsplanung verarbeitet werden.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in der ersten Ebene TechLevel die einzelnen Steuerungs- und Regelungsvorgänge der einzelnen Teilprozesse auf einer gemeinsamen Hardware durchgeführt werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10122322 | 2001-05-08 | ||
DE10122322A DE10122322A1 (de) | 2001-05-08 | 2001-05-08 | Verfahren zur Führung eines Stahlverarbeitungsprozesses, insbesondere eines Warmwalzprozesses |
PCT/EP2002/005071 WO2002091092A2 (de) | 2001-05-08 | 2002-05-08 | Verfahren zur führung eines stahlverarbeitungsprozesses, insbesondere eines warmwalzprozesses |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1390821A2 EP1390821A2 (de) | 2004-02-25 |
EP1390821B1 true EP1390821B1 (de) | 2005-08-17 |
Family
ID=7684025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02742971A Revoked EP1390821B1 (de) | 2001-05-08 | 2002-05-08 | Verfahren zur führung eines stahlverarbeitungsprozesses, insbesondere eines warmwalzprozesses |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1390821B1 (de) |
JP (1) | JP2005509206A (de) |
AT (1) | ATE302440T1 (de) |
DE (2) | DE10122322A1 (de) |
WO (1) | WO2002091092A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10327663A1 (de) * | 2003-06-20 | 2005-01-05 | Abb Patent Gmbh | System und Verfahren zur optimierenden Regelung der Dickenqualität in einem Walzprozess |
EP3798750B1 (de) * | 2019-09-25 | 2024-09-25 | SMS group GmbH | Verfahren zum überwachen und steuern einer anlage zum walzen metallener produkte |
DE102020202273A1 (de) * | 2020-02-21 | 2021-08-26 | Sms Group Gmbh | Verfahren zur Automatisierung einer hüttentechnischen Anlage, insbesondere einer Anlage zum Walzen von Metallbändern |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03259302A (ja) * | 1990-03-09 | 1991-11-19 | Hitachi Ltd | 情報処理システム |
DE19850492A1 (de) * | 1997-11-10 | 1999-05-12 | Siemens Ag | Verfahren und Einrichtung zum Warmwalzen dünner Stahlbänder |
DE19838469B4 (de) * | 1998-08-25 | 2007-10-18 | Abb Research Ltd. | Prozeßsteuer- und Regelsystem mit verteilter Verarbeitung |
-
2001
- 2001-05-08 DE DE10122322A patent/DE10122322A1/de not_active Withdrawn
-
2002
- 2002-05-08 JP JP2002588289A patent/JP2005509206A/ja active Pending
- 2002-05-08 DE DE50203961T patent/DE50203961D1/de not_active Revoked
- 2002-05-08 AT AT02742971T patent/ATE302440T1/de not_active IP Right Cessation
- 2002-05-08 WO PCT/EP2002/005071 patent/WO2002091092A2/de active IP Right Grant
- 2002-05-08 EP EP02742971A patent/EP1390821B1/de not_active Revoked
Also Published As
Publication number | Publication date |
---|---|
WO2002091092A2 (de) | 2002-11-14 |
EP1390821A2 (de) | 2004-02-25 |
JP2005509206A (ja) | 2005-04-07 |
DE10122322A1 (de) | 2002-11-14 |
DE50203961D1 (de) | 2005-09-22 |
WO2002091092A3 (de) | 2003-05-01 |
ATE302440T1 (de) | 2005-09-15 |
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