EP2566633A2 - Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeit - Google Patents
Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeitInfo
- Publication number
- EP2566633A2 EP2566633A2 EP11710447A EP11710447A EP2566633A2 EP 2566633 A2 EP2566633 A2 EP 2566633A2 EP 11710447 A EP11710447 A EP 11710447A EP 11710447 A EP11710447 A EP 11710447A EP 2566633 A2 EP2566633 A2 EP 2566633A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- band
- point
- control computer
- finishing train
- points
- 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.)
- Granted
Links
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- 238000005096 rolling process Methods 0.000 claims description 37
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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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- 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
-
- 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
-
- 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
- B21B2275/06—Product speed
-
- 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
- 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
Definitions
- the present invention relates to an operating method for a finishing train for rolling a strip
- Band point and nominal value are characteristic of the desired energy content of the first band point
- the actual value is bezo ⁇ gen to a location in front of the finishing line and the target size is based on a location downstream of the finishing ⁇ road,
- control computer determines a leading variable prior to the arrival of the first band point in the finishing train for the first band point on the basis of a determination rule
- control computer determines a Leitge ⁇ speed based on the Leitulate and operates the finishing train at the time of entry of the first band point in the finishing train at the conduction velocity
- the present invention further relates to a computer program comprising machine code which can be processed directly by a control computer for a finishing train for rolling a strip and whose execution by the control computer causes the control computer to operate the finishing line according to such an operating method.
- the present invention further relates to a control computer for a finishing train for rolling a belt, wherein the control computer is designed such that it operates the finished road ⁇ according to such a method of operation.
- the present invention further relates to a finishing line for rolling a belt, which is equipped with such a control computer.
- a hot strip mill consists of at least one finishing train and one cooling line downstream of the finishing train.
- the finishing train may be preceded by a roughing train - alternatively or in addition to the cooling section - or the finishing train may be preceded by a casting device.
- the finishing train has a number of rolling stands.
- the number of rolling stands can be determined as needed.
- there are several rolling stands for example four to seven rolling stands. In individual cases, however, only a single rolling stand can be present. For each roll stand - regardless of their number - a setpoint decrease is specified for every rolling pass to be performed. If several rolling stands are available, generally further input and / or outlet-side desired trains are specified. If only a single roll stand is present, one and / or Auslaufseifiger Sollzug can be specified. However, this is not mandatory.
- the final rolling temperature that is, the temperature at which the strip exits the finishing train.
- Al ⁇ tively to finish rolling temperature can also be used the energy content of the tape at this location variable describing others, such as the enthalpy.
- the target size should be kept as far as possible over the entire length of the tape.
- the target size may alternatively be constant or vary along the length of the band.
- the conduction velocity is a speed from the - gege ⁇ appropriate in conjunction with the Hughes- in the finishing train Vice border pass reductions and desired features - within the
- Finishing occurring strip and Walzenorgsgeschwindig ⁇ speeds are clearly determined.
- it may be a fictitious speed of the tape head or the speed of the first rolling stand of the finishing train.
- the guide speed can be defined, for example, as a function as a location of the tape head.
- the finishing train is usually arranged downstream of a cooling section.
- the strip In the cooling section, the strip is cooled in a defined manner to a reel temperature (or enthalpy).
- the speed with which the belt passes through the cooling ⁇ stretch is determined by the Leitgesch ⁇ sets.
- the adjustment of the cooling curves required for the individual strip points is achieved by tracking the strip points and by controlling the control valves of the cooling devices of the cooling section, which adjust the flow of coolant, in a time-correct manner.
- the control valves in practice considerable tarry ⁇ delay times that are often in the order of several seconds. In order to be able to control the control valves in good time, it is therefore necessary to be on time knowing in advance when a certain band point is within the control of a particular cooling device.
- the (actual) is further known to detect and final rolling temperature track the Leitgeschwindig ⁇ ness in the sense of a minimization of the deviation of the actual final rolling temperature of the predetermined Sollendwalztempe-.
- This tracking can be done by means of a classical or - as described for example in DE 103 21 791 AI - by means of a model predictive control. Regardless of the type of control (classic or model predictive), the control intervention, ie changing the conduction velocity, is carried out simultaneously to determine the
- the prediction even if it were correct or at least approximately correct, would in principle be limited to a single control step in the teaching of DE 103 21 791 A1. This would be completely insufficient for a timely tracking of the control signals for the actuators of the cooling section or of the intermediate structure cooling devices of the finishing train. Varying the conduction velocity results therefore that the set of the actuators of the cooling line ⁇ brought coolant quantities not been to the strip points ⁇ be introduced for which the coolant amounts previously calculated. Therefore, deviations of the temperature (or of the energy content) of the band points at the end of the cooling ⁇ stretch (for example, on a reel) of desired setpoints arise. The exact compliance with the final rolling temperature is therefore "bought" in the prior art with an increased fluctuation, for example, of the coiler temperature.
- the object of the present invention is to provide opportunities to be able to reliably realistically determine the Leit ⁇ size not only for this band point, but also for incoming after this band point in the finishing line tape points before entering a band point in the finishing mill.
- Target size is related to a location behind the finishing train
- control computer determined on the basis of the determined for the respective band point guide each a Leitgeschwindig- speed and operates the finishing train at the time of running ⁇ of the respective band point in the finishing mill with the respective conduction velocity
- each individual size is related in each case to one of the band points, the actual and nominal size of which go into the determination of the respective reference variable
- control computer for example, carry a weighted or unweighted Mittelwertbil ⁇ dung.
- control computer for each band point, for which he determined its Leitsting,
- the guide values are provisional values
- the operating method according to the invention is still very compute-intensive. To reduce the computational effort is preferably provided
- control computer prepares in advance a data field in which the control computer stores the expected variable resulting for the respective possible actual variable at the respective possible guide speed for a multiplicity of possible guide speeds and possible actual variables
- control computer determines the parameters for the band points using the data field.
- Finished road accepts a measure that for an actual energy content of each band point at the place is characteristic behind the finishing train, to which the corresponding nominal value is related, and
- the model of the finishing train characterized adapted that it adds in the use of the data field to the actual variables an offset, scaled, the conduction velocities with a scaling factor and / or adds an offset to them and / or to the erstoff ⁇ th using the data field expectation quantities a Offset added.
- the actual size and the desired size of the points already entered the finishing line are received for each master in their determination only if these tape points at the time for which the respective guide is determined, not from the finishing train have leaked.
- the actual and nominal values of all band points, which are located at the time when the determined band point enters the finishing train in the finishing train can be included in the determination of the reference variable for a specific band point.
- Finished road accepts a measure that for an actual energy content of each band point at the place is characteristic behind the finishing train, to which the corresponding nominal value is related, and
- control computer compares the expected energy content with the actual energy content and tracks the control values
- control computer tracks the guiding parameters
- control computer takes into account the changed course of the parameter when determining expectation variables.
- control computer carries out the tracking for all already determined control variables.
- control computer automatically readjusts only those command variables based on the comparison, which were determined for strip points which have a minimum distance at the time of performing After ⁇ from the entrance of the finishing train.
- This procedure is particularly advantageous if the control computer or other control means uses the determined command variables for determining at least a further manipulated variable and the further controlling variable ⁇ SSE delayed by a dead time and acts locally on the tape. This procedure is optimal if the minimum distance is determined in such a way that a time difference corresponding to the minimum distance is at least as long as the dead time.
- the model can be adapted immediately. This corresponds to the adaptation of the investigation rule. Is then re-determined for at least one of the already ermit ⁇ telten command variables the guide variable using the adapted model of the finishing train.
- This ent ⁇ speaks from the approach of tracking the already determined control variables.
- a smooth transition from the originally determined control variables to the newly determined control parameters can take place.
- the operating method according to the invention already provides then represents a significant advance over the prior art, when the prediction horizon is relatively small, amounts to ⁇ play, three to five points on the strip. Its full superiority but showing operation method of the invention particularly when the first tape point, and the part of the second strip points for which their respective Leitgrö ⁇ SSE was determined prior to entry of the first tape point in the finished ⁇ road, a prediction horizon entspre ⁇ Chen, at least as large as the dead time with which the further manipulated variable acts on the band. This applies in particular in cooperation with the tracking of the already determined control variables, if the tracking is also tuned to the said dead time.
- control computer chains together the determined guiding variables or the corresponding guiding speeds by a spline, so that a guiding-speed course resulting from the linking is continuous and differentiable.
- the control computer preferably executes the determination of the control variables online or in real time as part of a precalculation.
- the inventive object is also achieved by a Compu ⁇ terprogramm of the type mentioned.
- the computer program is designed in this case such that the control computer executes an operating method with all steps of an operating method according to the invention.
- the object is further achieved by a control computer for a finishing train for rolling a belt, which is formed from ⁇ such that it performs such operation during operation.
- the object is further achieved by a finishing train for rolling a belt, which is equipped with such a control computer.
- FIGs 3 to 6 exemplify various states of a Fer ⁇ tigments
- FIG 7 an example of a snapshot of the finished ⁇ road
- FIGS. 8 to 11 are flow charts
- FIG. 15 is a flow chart.
- a hot strip mill comprising at least one Fer ⁇ tig letters 1.
- a tape 2 is to be rolled.
- the band 2 is usually a metal band, in ⁇ example, a steel strip. Alternatively (to steel), the band may be made of copper, brass, aluminum or another metal.
- the finishing train 1 has for rolling the belt 2 a Walzge ⁇ setup 3 or - as shown in Figure 1 - several rolling stands 3 on. Three such rolling mills 3 are shown in FIG. 1.
- the actual number of rolling mills 3 can be three, as shown. Alternatively, it may be different from three, in particular larger. In general, the number is at ⁇ at roll stands 3, four to eight, in particular 5 to 7. Further, illustrated only the work rolls of the roll stands 3 in FIG 1 (2-high).
- the rolling stands 3 include in addition to the work rolls back-up rolls (4-high), sometimes in addition also intermediate rolls (6-high).
- the finishing train 1 may comprise a heating device 4, for example an induction furnace. If the heating device 4 is present, it is usually located at the entrance of the finishing train 1. Alternatively or additionally - as with intermediate stand cooling devices - 3 heaters may be present between the rolling stands. The heating device 4, if it is present, in the context of the present invention as part of the finishing train 1 ⁇ see. As an alternative or in addition to the heating device 4, the finishing train 1 may have interstitial cooling devices 5. If the inter-frame cooling devices 5 present are each inter-frame cooling device 5 of two of the rolling stands 3 eingabelt. They are, if they are present, part of the finishing train 1. Each inter-frame cooling device 5 has at least one control valve 5 'and at least one spray nozzle 5 ".
- the finishing train 1 can continue nachge ⁇ a cooling track 6 nachge ⁇ assigns. If the cooling section 6 is present, it has cooling devices 7. Each cooling device 7 has at least one control valve 1 'and at least one spray nozzle 7 ".
- the strip 2 is cooled with a liquid cooling medium (usually water with or without admixtures).
- a liquid cooling medium usually water with or without admixtures.
- the finishing train 1 is furthermore equipped with a control computer 8.
- the control computer 8 serves At the very least the control of the finishing train 1, that is, the Walzgerüs ⁇ te 3 and - if present - of the heater 4 and the intermediate stand cooling means 5. If desired, also control other devices, the control computer 8, for example, the cooling section 6 and the cooling means 7 Alternatively, the cooling section 6 can be controlled by another control device 8 '.
- the operation of the control computer 8 is determined by a Compu ⁇ terprogramm 9, the control computer 8 - is fed - beispiels- example via a mobile data carrier 10th
- the mobile data carrier 10 can be designed as required, for example as a CD-ROM, as a USB memory stick or as an SD memory card.
- On disk 10 is the computer pro stored program 9 in machine-readable form, for example in electronic form.
- the computer program 9 comprises machine code 11 with which the control computer 8 is programmed and which can be processed directly by the control computer 8.
- the execution of the machine code 11 by the control computer 8 causes the control ⁇ calculator 8 operates the finishing train 1 according to an operating method, which will be explained in more detail below.
- the programs mieren with the computer program 9 thus effects a entspre ⁇ sponding embodiment of the control computer. 8
- control computer 8 In the context of the operating method, the control computer 8 according to FIG. 2 must have an actual size G and a number of second band points 13 of the band 2 in a step S1 for a first band point 12 of the band 2, a number of second band points 13 of the band 2 Target size G * be known, and at the latest at a time when the first band point 12 is still in front of the finishing train 1.
- control computer 8 does not have to know all the actual variables G and the nominal values G * for the first band point 12, the second band points 13 and the third band points 13 'at the same time. However, it will also be apparent that the knowledge must be completed before the first band point 12 enters the finishing train 1.
- the second band points 13 are all located behind the first band point 12, that is, they run into the finishing line 1 after the first band point 12.
- the Figu ⁇ ren 3 to 6 show respective embodiments.
- the actual size G is thus at the location xE in front of the finishing train 1 based.
- the location xE can be determined as needed. In particular, according to FIG. 1, it may be a location which is located immediately before the first device 4, 3 of the finishing train 1, by means of which - directly or indirectly - the temperature of the belt 2 is influenced. It is still possible that a temperature measuring device is arranged at this location. In general, however, the temperature measuring device 14 is arranged upstream of the location Xe.
- the target quantity G * each band point 12, 13, 13 'is characteristic of the energy content of the respective strip point 12, 13, 13' behind the finishing train 1 is to aufwei ⁇ sen in a place xA.
- the desired values G * are therefore related to the location xA behind the finishing train 1.
- the location xA can be determined as required, analogously to the location xE in front of the finishing train 1. In ⁇ example, it may be the location of a temperature measuring device 15, which downstream of the finishing train 1, the cooling section 6, however, upstream.
- the type of the actual size G and the target size G * can be determined as needed. As a rule, these are the corresponding temperatures. Alternatively, an enthalpy in particular comes into question.
- place always refers below to a location that is relative to the finishing line 1 stationary.
- strip-point be ⁇ takes place in contrast, always on a point be ⁇ cardi of the band 2 is stationary.
- Distances between the points on the strip 12, 13, 13 'from each other are determined in the present invention is not limited by their geometric distances, since these distances change due to the rolling of the strip 2 in the Fer ⁇ tig No. 1 Rather, the distances are defined by the mass which is located between the band points 12, 13, 13 '.
- the band points 12, 13, 13 ' may, based on the mass of the band 2 located between them, be equidistant.
- the time interval between two successive band points 12, 13, 13 ' is generally between 100 ms and 500 ms, typically between 150 ms and 300 ms. For example, it may be 200 ms.
- a step S2 the control computer 8 determines - even ⁇ understood prior to entry of the first tape point 12 in the finishing mill - for the first strip point 12 based on a determination rule a master value L *.
- the control computer 8 is also determined at least for a part of the second strip points 13 by means of a Ermittlungsvor ⁇ writing a respective master value L *.
- the control computer 8 also executes step S3 before entering the first strip point 12 into the finishing train 1.
- the steps S2 and S3 of FIG. 2 usually form one unit in practice. The separate illustration in FIG 2 serves single ⁇ Lich of better illustrate the present invention.
- control computer 8 determines in the context of step S3 for all second band points 13, which - starting from the first band point 12 - are within a predetermined recuper ⁇ ditationshorizontes H, whose master size L *. If, as part of step S3, the guide variable L * is determined for a specific second band point 13, the respective other band points 13, which lie between the first band point 12 and the determined second band point 13, will generally also be the other Guide size L * determined.
- the command variables L determined * are each for charac- table with which conduction velocity vL, the control computer 8, the finishing mill 1 operates when the strip point 12, 13, for which the respective command variable L was determined *, enters the Fer ⁇ tig letters. 1
- the guide speed vL can be For example, be the speed at which the belt 2 enters the finishing train 1. Alternatively, it may be the speed at which the tape 2 runs from the finishing ⁇ road first Other sizes - for example, a determination of the mass flow or a roller speed or a roller peripheral speed - are conceivable. Is decisive ⁇ DEND that by conduction velocity vL - given ⁇ appropriate in combination with reductions per pass and desired features - are uniquely determined every band and Walzentoxinssge- occurring in the finishing train 1 speeds.
- a step S4 the control computer 8 determines, if necessary, the corresponding guide speeds vL on the basis of the control variables L *.
- the control computer 8 operates the finishing train 1 in accordance with the guide speeds vL determined in step S4.
- the control computer 8, the conduction velocity vL thus always such a that the finishing train 1 is operated with the Leitge ⁇ speed vL at any time, with the guidance parameter L * of the currently entering the finishing train 1 Volume point 12, corresponds. 13
- the determination rule for determining the guiding variables L * is in each case specific to the respective band point 12, 13.
- the determined value of the reference variable L * for a particular band point 12, 13 can not therefore be readily determined by the value of the reference variable L * for another band point 12, 13 CLOSED ⁇ sen.
- the actual quantities G and the set values G * of at least one further band point 12, 13, 13 ', which at the time at which the considered band point 12, 13 enters the finishing train 1, already enter the finishing train 1 in the respective determination rule is turned ⁇ occur.
- FIG. 7 shows by way of example a snapshot of the finishing train 1 while the belt 2 is being rolled in the finishing train 1.
- the strip points PI to P4 have in this case, the finished ⁇ road 1 already left again, so are from the finished road one already resigned.
- the band points P31 to P35 are still in front of the finishing train 1.
- the band point P31 occurs in this case next in the finishing train 1 a.
- the band points P32, P33, P34 and P35 enter the finishing train 1 in succession.
- the actual and target variables G, G * are known up to and including the band point P35.
- the band point P30 is the band point that has just entered the finishing train 1. In the determination of the control variable L *, which must have been completed by the time of the occurrence of the band point P26 at the latest, have arrived
- the determination of the guiding quantity L * for the band point P30 is sufficient for the determination of the guiding quantity L * for the band point P30 to take into account the actual and nominal quantities G, G * of the band points P5 to P30, ie those band points which, according to the representation of FIG Finishing line 1 are located.
- the guiding variables L * are determined for the band points P31 to P35.
- the band point P31 corresponds to the first band point 12, the band points P32 to P35 to the second band points 13.
- the determination of the guide quantities L * for these band points P31 to P35 must each be at the latest at the time of entry of the band point P27 to P31 in FIG completed the finishing train 1.
- the band ⁇ points PI to P30 corresponding to the third band points 13 '.
- Band points PI to P30 preferably for at least one of the band points P6 to P30.
- the guiding variables L * for the band points P32 to P35 can also be determined. For example, for the band point P35 go into the determination for the guide size L *
- Band points PI to P34 The actual and nominal sizes G, G * for the strip points PI to P9 can hereby be disregarded, as the band points already quit PI to P9 to the date on which the band point P35 enters the Fer ⁇ tig Avenue one back from the finishing train 1 are.
- Typical numbers values are between 10 and 200, for example between 50 and 100. It is possible to take into account only a few band points 12, 13, 13 'of the band points 12, 13, 13' which are currently located in the finishing train 1 at a particular time - For example, every second or every fourth band point 12, 13, 13 '. This approach leads to a redu ⁇ ed computational effort and yet gives acceptable resulting ⁇ nisse.
- the actual and nominal values G, G * of all band points 12, 13, 13 ' are taken into account for the determination of the guide variable L * for a specific band point 12, 13, which coincide at the time of entry of that band point
- the guide variable L * is determined already in the finished ⁇ road 1 in the finishing train. 1
- the illustration shown in FIG. 7 is of course purely exemplary.
- the number of (second) band points 13 whose lead variable L * is predicted is purely exemplary.
- the prediction horizon H is purely exemplary. In particular, in practical An ⁇ applications the prediction horizon H several seconds Betra ⁇ gene that is, at a timing of, for example 200 ms per measurement recording of the actual value G corresponding to five times the number of strip points 12, 13. In some cases even a prediction horizon H of up to one minute and more possible, which ent ⁇ speaking at a timing of 200 ms of tape point to strip point ei ⁇ nem prediction horizon H 300 tape points and more.
- control computer 8 in step Sl of FIG 2 the actual and target variables G, G * for all band points 12,
- control computer 8 passes through the steps S2 and S3 only once and in the steps S2 and S3 - so ⁇ say in one stroke - the guiding variables L * for all band points 12, 13, 13 'of the band 2 determined. In this case the control computer 8 executes the determination of the control variables L * on the basis of a prediction online.
- control computer 8 executes the determination of the control variables L * in real time with the control of the finishing train 1. In this case, the control computer 8 determines the guiding variables L * by the prediction horizon H, so to speak.
- control computer 8 executes the determination of the control variables L * in real time.
- the control computer 8 in a given passage of the loop only the actual and target variables G, G * of band points 12, 13 known, which not yet in the finishing mill. 1 occurred.
- the actual and target variables G, G * of the band points 13 ', which have already entered the finishing train 1, are known to the control computer 8 in this case, however, on the basis of earlier loop passes. In this case, it is only necessary for the control computer 8 to "remember" the "old" actual and target variables G, G *.
- steps S2 and S3 of FIG 2 8 selects the control computer shown in FIG 8, in a step Sil first one of the strip points 12, 13, ⁇ sen actual and desired size G, G *, the control computer 8 already be ⁇ known are. For example, the control computer 8 selects the band point P31 of FIG. 7.
- the control computer 8 13 determines all band ⁇ points 12, 13 ', their actual and nominal sizes G, G * in the determination of the guide variable L * for the strip point 12, 13 is ⁇ hen, the control computer 8 in Step Sil has selected.
- the control computer 8 - see FIG. 7 - determine the band points P6 to P31 for the band point P31.
- the control computer would determine the band points P7 to P32 for the band point P32 in step S12, for the band point P33 the band points P8 to P33, etc.
- step S13 the control computer 8 selects one of the band points 12, 13, 13 'determined in step S12.
- step S14 the control computer 8 determines a single-wire size 1 * for the tape point 12, 13, 13 'selected in step S13-for example for the tape point P6. * Go 'only the actual value G and the target size ⁇ G * of the selected band in step S13, point 12, 13, 13 in the determination of the Einzelleitchel. 1 The respective individual wire size 1 * is therefore related to this one tape point 12, 13, 13 '.
- the Einzelleit disclose 1 * determines a corresponding Leit ⁇ speed vL.
- the control computer 8 assumes that the band point 12, 13, 13 'considered in step S14 passes through the finishing line 1 and the finishing line 1 through the finishing line 1 during the entire passage of the considered band point 12, 13, 13' Time of entry into the finishing train 1 until the time of departure from the tig Vietnamese 1 - is constantly driven ⁇ with this guide speed vL, which is determined by the corresponding Einzelleitiere 1 *.
- an energy ⁇ content is for the considered strip point 12, 13, 13 'at the location xA, to the desired size G * of the considered band point 12, 13, 13' is related expected.
- the control computer 8 determines this expected energy content.
- the determination of the expected energy content can be determined by the control computer 8, for example by means of a finishing road model. Suitable finishing road models are known as such. They are used, for example, to determine the expected final rolling temperature, see the already mentioned DE 103 21 791 AI.
- the expected energy content is characterized by a corresponding expectation quantity GE.
- the expectation variable GE can alternatively be the temperature or the enthalpy, analogous to the actual and set values G, G *.
- the control computer 8 determines the Einzelleitiere 1 * for the considered band point 12, 13, 13 'in step S14 such that the expected size GE with the target size G * for the considered band point 12, 13, 13' matches.
- step S15 the control computer 8 checks whether it has already performed step S14 for all band points 12, 13, 13 'to be used. If this is not the case, the control computer 8 returns to step S13. In the renewed execution of step S13, the control computer 8 naturally selects another, previously not yet considered, band point 12, 13, 13 ', which enters into the determination of the sought-after control variable L *, for example the band point P7.
- step S15 the control computer 8 determines in step S15 that it has already determined all the required individual line sizes 1 *.
- the control computer 8 proceeds to a step S16.
- step S16 the control computer 8 determines based on all ⁇ A zelleit administratn 1 * he has determined in the context of the repeated working off of the step S14, the guide variable for L * the selected band in step Sil point 12, 13.
- Example ⁇ example the control computer 8 are the weighted or unweighted average of the Einzelleitieren 1 *.
- step S17 the control computer 8 checks whether it has the
- FIG. 8 The procedure of FIG. 8 is implemented slightly differently in practice than explained above.
- the strip point P28 of FIG 7 - is in the determination of the guide variable L * of many points on the strip 12, 13, 13' a, for example - based on FIG 7 - in the determination of the band points P28, P29, ... P53.
- the respective Einzelleitiere 1 * it is possible and even preferred to determine the respective Einzelleitiere 1 * only once and then save, so that they must be retrieved for later uses only from the memory.
- steps S13 to S16 of FIG. 8 As an alternative to the procedure of FIG. 8, according to FIG. 9, it is possible to replace steps S13 to S16 of FIG. 8 by steps S21 to S23.
- the steps Sil, S12 and S17 of FIG. 8 are adopted in the procedure of FIG. 9 from FIG.
- step S21 the control computer 8 determines on the basis of
- control computer 8 determines an effective setpoint G '* in step S22 on the basis of the setpoint values G * of the band points 12, 13, 13' determined in step S12.
- control computation ⁇ ner 8 in Steps S21 and S22 may be a weighted or unsaturated weighted averaging. Regardless of which approach is taken, the detailsswei ⁇ sen of the steps S21 and S22 should, however, correspond to each other.
- step S23 the control computer 8 determines the reference variable L * for the band point 12, 13 selected in step S11.
- the master variable L * determined in step S23 corresponds to a corresponding master speed vL. If the im
- the STEU ⁇ errechner 8 determines the master value L * in step S23 such that the expected size GE determined coincides with the effective target size G '*.
- the determination of the expectation ⁇ size GE may - be effected by means of an appropriate, known finishing train model - analogous to the procedure of step S14 of FIG. 8
- step S31 sets the control computer 8 in a step S31, the command variables L *, which it is to determine, - that the Leitgrö ⁇ SEN L * for the first swath dot 12 and for at least a portion of the second strip points 13 - first as a preliminary ⁇ te at .
- step S32 the control unit 8 in step S31 for the considered strip points 12 determines, 13 a respective He ⁇ maintenance size GE.
- the determined at step S32 expectation ⁇ sizes GE are provided for the expected energy content of the respective corresponding band point 12, 13 disciplinaryis ⁇ table that is expected for each strip point 12, 13 when the respective strip point 12, 13, the finishing mill 1 ent ⁇ speaking the scheduled course of the guide speed vL - as defined by the sequence of the guiding variables L * - goes through.
- the expected energy contents GE are each related to the location xA, to which the desired quantities G * for the band points 12, 13 are related.
- the control computer 8 forms a target function Z. At least the amounts of the differences of the expectation variables GE from the corresponding desired values G * enter into the objective function Z.
- the Zielfunkti ⁇ on Z contain a sum, for example, each summand is the square of the difference of an expectation GE of the corresponding desired size G * according to the representation in FIG.
- the objective function Z can thus have the following form:
- indices i, j were used because the indices i and j run over different ranges.
- ⁇ and ßj are - in principle arbitrary, non-negative - weighting factors.
- the control computer 8 varies the applied guiding variables L * with the aim of optimizing the target function Z according to the embodiment above. With a correspondingly different design of the objective function Z, maximizing would also be possible.
- FIGS. 8 and 9 are applicable regardless of whether only a few control variables L * are determined in a single execution of steps S2 and S3 of FIG. 2 or whether the control variables L * are valid for all band points 12, 13, 13 'of the band 2 be determined in advance.
- the approach of FIG 10, however, provides only meaningful results when the prediction horizon H covers the entire band 2 or - if the band 2 is long enough - is sufficiently large.
- the prediction horizon H should be as large in the procedure of FIG 10 in case of a long tape 2, that it corresponds to at least the effective Fertigstra ⁇ .
- the effective length of the finishing train is determined by the maximum number of simultaneously located arrival in the finishing train 1 Volume ⁇ points 12, 13, 13 determines'.
- control computer 8 as shown by FIG 11 in a step S41 in advance - He ⁇ submit to the command variables L * that is in front of the - creates a data field.
- the control computer 8 deposits in the data field in a step S42 for a multiplicity of possible guide speeds vL and possible actual variables G, which expectation variable GE results for the respective possible actual variable G and the respective possible guide speed vL. Because in this case, the control computer 8 in the context of appropriately designed
- Steps S2 and S3 of FIG 2 determine the guiding variables L * for the band points 12, 13 using the data field.
- the control unit 8 determines the Einzelleitieren 1 * using the data field so that the use of the data field is of an indirect nature.
- the respective control variable L * is determined directly.
- the data field is used to determine the respectively resulting expected quantities GE.
- the data field can also be used in conjunction with the procedure of FIG. Because it can be formed in the first and usually already very good approximation for a particular band point 12, 13, 13 ', the mean of all Leitieren G * or all conduction velocities vL, with the finishing train 1 during the passage of the respective band ⁇ point 12, 13, 13 'is operated by the finishing train 1. This mean value can be regarded as the effective guide speed vL. The data field can thus be evaluated at this point to determine the expected size of GE for the ent ⁇ speaking strip point 12, 13, 13 '.
- the data field can be designed as needed.
- Example ⁇ it may be a pure checkpoint field with examples play, 5, 8, 10, ... reference points for each dimension. Between individual linear interpolation points may be (for example by means of splines) INTERPO ⁇ lines linearly or not in this case.
- the data field may be formed, for example, as a neural network.
- the location xE is located in front of the prefabricated street 1, to which the actual quantities G are related, but behind the temperature measuring device 14. It is therefore necessary to divide the measured quantities into the actual quantities G (which refer to the location xE). convert. This is relatively easy, since only an air gap must be calculated. Input values for the air gap is measured by means of the Tempe ⁇ raturmess issued 14 temperature value and the time for each strip point 12, 13, 13 'is obtained until the corresponding strip point 12, 13, 13' the location xE before reached the finishing train 1.
- the finishing train 1 has neither an input-side heating device 4 nor inter-frame cooling devices 5. If the heating device 4 and / or the inter-frame cooling devices 5 are present, the operating method according to the invention can be adapted accordingly. The necessary adjustments will be explained below in connection with a single inter-frame cooling device 5.
- the corresponding embodiments are also readily applicable to embodiments of the finishing train 1, which more than one inter-frame cooling device 5 and / or an input-side heater 4, wherein the heater 4 may be provided alternatively or in addition to the inter-frame cooling devices 5 ,
- the finishing mill 1 a single Zvi ⁇ rule scaffold-cooling device 5, for example between the second and the third roll stand 3 according to the depicting ⁇ lung of FIG 1.
- the model of the finished Road 1 - this is immediately and readily apparent - are divided into three submodels, which are designated in FIG 12 as Sectionmo ⁇ model TMl, partial model TM2 and partial model TM3.
- the partial model TMI corresponds in its approach a model of a ⁇ ner finishing mill 1, as previously thought, so ei ⁇ nem model of a finishing mill 1 without intermediate stand cooling facilities. It models the behavior of the belt 2 in the finishing train 1 to before the inter-frame cooling device 5.
- the sub-model TMl receives as input variables the actual size G of a band point 12, 13, 13 'and the leading speed vL and the corresponding Leit ein.
- the partial model TMI provides as an output an expectation TE size that corresponds to an expected energy content with which the corresponding strip point 12, 13, 13 enters' into the insectsge ⁇ Ruest cooling device.
- the partial model TMI is two ⁇ dimensional, because it has two input variables, namely the actual variable G and the conduction velocity vL.
- the partial model TM2 models the inter-frame cooling device 5 as such. It receives as input variables supplied by the part ⁇ model TMI expected size TE, the Leitgeschwin ⁇ speed vL with which the band point in question 12, 13, 13 ', the intermediate stand cooling device 5 passes and - as such given - refrigerant quantity M, at which the tape 2 Per
- the quantity M of cooling liquid per unit time is preferably defined as a function of the material of the tape 2 ⁇ amount which has the Eisengerüst- cooling device 5 already happened.
- the amount M of cooling fluid per unit of time may be defined, for example, as a function of the respective band point 12, 13, 13 ', which is just entering the inter-frame cooling device 5.
- the partial model TM2 thus has three input variables, in contrast to a model of a finishing train 1 without interstand cooling devices. Setting up a corresponding three-dimensional data field for the three-dimensional part Model TM2 may still be possible depending on the computing power available.
- the partial model TM2 is preferably split into two submodels ⁇ 2 ', TM2 ", which are multiplicatively linked to one another, because with sufficient accuracy, a three-dimensional function f, which predetermines an expected variable TA behind the inter-frame cooling device 5 as a function of the expected variable TE the inter-frame cooling device 5, the guide speed vL and the amount M of cooling fluid per unit time, are shown as the product of a two-dimensional function g and a one-dimensional function h, the function g is here of the expected value TE, which is supplied by the submodel TM1, The function h depends only on the quantity M of cooling liquid per unit of time, so it can be used
- TE is the expected size for the energy content of the considered band point 12, 13, 13 'in front of the inter-frame cooling device 5,
- M is the amount of cooling fluid applied to the belt 2 per unit of time.
- the submodel TM3 has the same structure as the submodel TM1. It models the part of the finishing train 1 which is arranged behind the intermediate stand cooling device 5.
- the submodels TM1 to TM3 are connected to each other and concatenated with each other, so that the output variables of the one submodel TM1, TM2 input variables of the next mo- dells TM2, TM3.
- the dimensionality of Mo ⁇ dell istsproblems can already be substantially reduced with each other, namely on the viewing a three-dimensional and two-dimensional two- problems.
- the complexity can be reduced even further. In particular, by this Redu ⁇ cation of the complexity of the three-dimensional problem, the real-time and online capability is maintained even if the inter-frame cooling devices 5 and / or the heater 4 are present.
- the intermediate stand cooling devices 5 and / or the heating device 4 are available, so they can, provided that the course of the set M is added to the cooling liquid per unit of time, the command variables L * calculated ⁇ the.
- the quantity M can then be varied for each intermediate stand cooling device 5 in order to obtain the expected energy contents of the strip points 12, 13, 13 'as far as possible from the corresponding desired energy contents the band ⁇ points 12, 13, 13 'approach.
- the determination of the correct quantities M takes place completely analogously to the determination of the correct quantities of cooling liquid for the cooling devices 7 of the cooling section 6.
- control computer 8 it is possible for the control computer 8 to control the finishing train 1 without detecting a measured quantity GM which is characteristic of the actual energy content of the band points 12, 13, 13 'behind the finishing train 1.
- the control computer 8 can ⁇ a corresponding measured temperature value against take, which was detected by the temperature measuring device 15.
- control computer 8 in a step S52 for at least a portion of the band points 12, 13, 13 '- preferably for all band points 12, 13, 13' - each have an expectation GE '.
- the control computer 8 ⁇ determined for each strip point 12, 13, 13 'whose expectation ⁇ size GE', while the respective strip point 12, 13, 13 'the finishing train 1 passes.
- the control computer 8 it is alternatively possible for the control computer 8 to determine the corresponding expectation variable GE 'before the respective band point 12, 13, 13' passes through the finishing train 1. Any such identified expectations ⁇ tung size GE 'is characteristic of the energy content of the band for the respective point 12, 13, 13' is at the location xA, to which the desired quantities are G * based expected.
- the control computer 8 determines the expected quantities GE 'using the Leit Anlagensverlaufs, with the jewei ⁇ lige band point 12, 13, 13' actually passes through the finishing train 1.
- step S52 the determined in step S52 actual energy contents of the band points 12, 13, 13 'exactly the actual ⁇ union energy content , which are determined by the corresponding measured quantities GM.
- the model of finishing train 1 is faulty. The reasons for this can be manifold. For example, the modeling can be easily attached or it may have a sys ⁇ atic error, the model, such as the heat transfer be wrong modeled.
- the control computer 8 therefore compares the energy content according to the measured variable GM and the energy content according to the corresponding expected variable GE 'with each other.
- the control computer 8 automatically carries out at least a part of those control points. large L *, which the control computer 8 has already determined at the time of the comparison.
- step S54 refers only to those control variables L *, which are indeed already determined at this time, but are still pending execution.
- the step S54 is thus carried out only for guiding variables L * which were determined for band points 12, 13 which have not yet entered the finishing train 1 at the time of the tracking.
- the first tracked guide variable L * can be tracked by 10% of its variation, the second tracked guide variable by 20% of its amendments ⁇ tion, the third tracked guide variable L * by 30% of their ⁇ n ⁇ alteration etc ..
- control computer 8 in one step
- the adapting the determination procedure can in particular comprise adapting the model of the finishing train 1 and here insbeson ⁇ particular the heat transfer model.
- the expectation quantities GE, GE ' are determined by means of the above-mentioned data field, it is possible to carry out the adaptation of the model of the finishing line 1 for the strip 2, which is currently passing through the finishing line 1, in a simplified manner.
- the adaptation can be carried out, for example, in that an offset is added to the actual variables G, before being used as input ⁇ size of the data field.
- the guide speed vL can be scaled by a factor and / or an offset added to it before it is used as input to the data field.
- an offset can be added to the expected variable GE, GE 'determined using the data field in each case.
- the real-time capability of the operating method according to the invention is maintained in this ver ⁇ simplified type of adaptation of the model of the finishing line first
- step S54 it is possible to track all the control variables L * which have already been determined at this time, but have not yet been executed, that is to say, for example, the master variable L * for the (first) band point entering the finishing train 1 next 12.
- the STEU ⁇ errechner 8 only those command variables L resulting from the comparison of step S53stä ⁇ tig However * after that were determined for (second) strip points 13, which was a minimum distance at the time of tracking of the entrance of the finishing train 1 MIN (see FIG. 14).
- the operating method according to the invention has a prediction horizon H with regard to the control variable course.
- the prediction horizon H is determined by the second band point 13, whose master size L * is already determined and which has the greatest distance from the finishing line 1 from the second band points 13 whose guiding variables L * have already been determined. It may be useful if the control computer 8 self based on the comparison act only those command variables L * readjusts that were determined for second strip points 13 which have at the time of the post ⁇ passing from the entrance of the finishing mill 1 the minimum distance MIN. This will be illustrated below in connection with FIG.
- the control computer 8 furthermore receives from the temperature measuring device 15 the actual temperature which is measured for the belt point P2. This corresponds to the step S51 of FIG. 13. It is assumed that the comparison of the step S53 gives a deviation. Despite the deviation of the control computer 8 leaves - for example - the already determined Leitgrö ⁇ Shen L * for the band points P31 to P34 unchanged. Based on the comparison of step S53 in step S54, it only traces the reference variable L * of the band point P35. The guiding variables L * for subsequent band points P36, P37 associated with this
- Step S55 adapted based on the comparison of step S53 adap ⁇ .
- the finishing train 1 is usually downstream of a cooling section 6.
- the cooling section 6 hasdeein ⁇ directions 7.
- Each cooling device has (at least) a control valve 1 'and a number of spray nozzles 7 "assigned to the respective control valve 1'
- Control valve 1 ' is set, how much cooling liquid is delivered locally to the belt 2.
- the control valves 1 'rea ⁇ yaw relatively sluggish.
- T the time at which a control valve 1 'is controlled with a changed manipulated variable S up to the time at which the changed control affects the band 2
- the controller 8 'of the cooling section 6 can predict response to future upcoming changes in Leitge ⁇ speed vL time.
- the control device 8 'of the cooling section 6 must therefore use the control variable L * - and also ⁇ future upcoming control variables L * - to determine the set large S for the control valves 1' when the correct amounts of coolant to the "right" places of This applies, of course, in an analogous form even if the control of the cooling section 6 is carried out by the control computer 8.
- the prediction horizon H according to FIG 14 is at least as the dead time T is preferably larger than the dead time T explained above.
- the prediction horizon H is even greater than the dead time T. If, for example - see FIG. 7 - the dead time T corresponds to the band points P31 to P33, the prediction horizon H should exceed more than two band points extend, for example, according to the illustration of FIG 7 over four band points.
- the minimum distance should least MIN within which the tracking of the SEN Leitgrö ⁇ L * is suppressed at least as large as the dead time to be T, 7 for example, be in accordance with FIG three strip points.
- step S4 is designed in the form of a step S61 according to FIG.
- the control computer 8 chains the determined control variables L * to each other by a spline, so that the chaining results in a control variable course that is continuous and differentiable.
- the so-defined Leit beausverlauf is continuous and differen ⁇ zierbar.
- a step S62 could be present.
- the control computer 8 determines the corresponding point-specific guide speeds vL on the basis of the guide variables L * determined on a point-by-point basis. In this case, the control computer 8 chains the corresponding guide speeds vL by a spline to each other, so that the chaining results in a continuous and differentiable conduction velocity course.
- Steps S61 and S62 are alternative to each other. Although they are therefore both shown in FIG 15, but both drawn only ge ⁇ dashed.
- the operating method for the Fer ⁇ tig Avenue 1 described above provides - first - conduction velocities v L, until the last strip point 13 of the tape 2 in the finishing train
- the Leitiere L * was further explained in each case in conjunction with the band points 12, 13, which run into the finishing train 1 at certain times. However, this is not to be understood as meaning that the corresponding guiding variables L * are permanently assigned to the corresponding band points 12, 13. For the corresponding guide variable L * global effect on all the tape 2. It is crucial, therefore, only the assignment of the respective command variable L * at a given time, said time is defined by the fact that the corresponding band ⁇ point 12, 13 at this time in the finishing train 1 on ⁇ runs.
- the present invention has many advantages. Insbeson ⁇ wider it possible one or Leitieren- Leitgeschwin- dtechniksverlauf predict that will later actually met during operation of the finishing line first Associated with this results in improved accuracy in maintaining the nominal energy content at the outlet of the finishing train 1 and In addition, an improved - even considerably improved ⁇ serte - accuracy with which the cooling section 6 controlled ⁇ who can. Thus, it is possible, for example, both a final ⁇ Walztemperatur (at the outlet of the finishing train 1) and a reel temperature (at the outlet of the cooling section 6) comply with high accuracy.
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Abstract
Description
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Priority Applications (1)
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EP11710447.1A EP2566633B1 (de) | 2010-05-06 | 2011-03-09 | Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeit |
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EP10162135A EP2386365A1 (de) | 2010-05-06 | 2010-05-06 | Betriebsverfahren für eine Fertigstraße mit Prädiktion der Leitgeschwindigkeit |
EP11710447.1A EP2566633B1 (de) | 2010-05-06 | 2011-03-09 | Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeit |
PCT/EP2011/053513 WO2011138067A2 (de) | 2010-05-06 | 2011-03-09 | Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeit |
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EP10162135A Withdrawn EP2386365A1 (de) | 2010-05-06 | 2010-05-06 | Betriebsverfahren für eine Fertigstraße mit Prädiktion der Leitgeschwindigkeit |
EP11710447.1A Active EP2566633B1 (de) | 2010-05-06 | 2011-03-09 | Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeit |
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US (1) | US9630227B2 (de) |
EP (2) | EP2386365A1 (de) |
CN (1) | CN102939173B (de) |
BR (1) | BR112012028373A2 (de) |
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FI20070622L (fi) * | 2007-08-17 | 2009-04-15 | Outokumpu Oy | Menetelmä ja laitteisto tasaisuuden kontrolloimiseksi ruostumatonta terästä olevan nauhan jäähdytyksessä |
EP2386365A1 (de) | 2010-05-06 | 2011-11-16 | Siemens Aktiengesellschaft | Betriebsverfahren für eine Fertigstraße mit Prädiktion der Leitgeschwindigkeit |
EP2527053A1 (de) * | 2011-05-24 | 2012-11-28 | Siemens Aktiengesellschaft | Steuerverfahren für eine Walzstraße |
EP2527054A1 (de) * | 2011-05-24 | 2012-11-28 | Siemens Aktiengesellschaft | Steuerverfahren für eine Walzstraße |
DE102013221710A1 (de) | 2013-10-25 | 2015-04-30 | Sms Siemag Aktiengesellschaft | Aluminium-Warmbandwalzstraße und Verfahren zum Warmwalzen eines Aluminium-Warmbandes |
EP2873469A1 (de) | 2013-11-18 | 2015-05-20 | Siemens Aktiengesellschaft | Betriebsverfahren für eine Kühlstrecke |
EP2898963A1 (de) * | 2014-01-28 | 2015-07-29 | Siemens Aktiengesellschaft | Kühlstrecke mit zweifacher Kühlung auf eine jeweilige Sollgröße |
US9897984B2 (en) * | 2014-08-05 | 2018-02-20 | Mitsubishi Electric Research Laboratories, Inc. | Model predictive control with uncertainties |
EP3009205B1 (de) | 2014-10-14 | 2018-12-26 | Primetals Technologies Germany GmbH | Berücksichtigung einer Referenzgeschwindigkeit beim Ermitteln einer Leitgeschwindigkeit |
JP6172129B2 (ja) * | 2014-12-09 | 2017-08-02 | Jfeスチール株式会社 | 熱延鋼帯の仕上圧延方法 |
EP3202502A1 (de) * | 2016-02-04 | 2017-08-09 | Primetals Technologies Germany GmbH | Bandlageregelung |
RU2655398C2 (ru) * | 2016-08-26 | 2018-05-28 | Антон Владимирович Шмаков | Способ производства проката |
AT519995B1 (de) * | 2017-05-29 | 2021-04-15 | Andritz Ag Maschf | Verfahren zur Regelung der Aufwickeltemperatur eines Metallbandes |
CN112139260B (zh) * | 2019-06-26 | 2022-11-18 | 宝山钢铁股份有限公司 | 一种热轧可逆道次轧制温降控制方法 |
DE102019217966A1 (de) | 2019-11-21 | 2021-05-27 | Sms Group Gmbh | Einstellung einer Auslauftemperatur eines aus einer Walzstraße auslaufenden Metallbands |
CN115161445B (zh) * | 2022-06-30 | 2024-02-27 | 武汉大学 | 一种优化9%Cr热强钢管道中频感应加热局部焊后热处理参数的方法 |
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JPS62158825A (ja) * | 1985-12-28 | 1987-07-14 | Nippon Steel Corp | 熱間圧延鋼板の冷却方法 |
JPS63168211A (ja) * | 1986-12-27 | 1988-07-12 | Sumitomo Metal Ind Ltd | 熱延プロセスにおける温度制御方法 |
GB9317928D0 (en) * | 1993-08-26 | 1993-10-13 | Davy Mckee Poole | Rolling of metal strip |
IT1267916B1 (it) | 1994-03-31 | 1997-02-18 | Danieli Off Mecc | Procedimento per la produzione di nastro partendo da bramme sottili e relativo impianto |
FR2773271B1 (fr) | 1997-12-31 | 2000-02-25 | Thomson Multimedia Sa | Emetteur/recepteur d'ondes electromagnetiques |
JP2000210708A (ja) * | 1999-01-21 | 2000-08-02 | Toshiba Corp | 圧延機出側の圧延材温度制御方法及び圧延材温度制御装置 |
RU2184632C2 (ru) * | 2000-07-27 | 2002-07-10 | Морозов Андрей Андреевич | Способ управления условиями охлаждения проката |
DE10156008A1 (de) * | 2001-11-15 | 2003-06-05 | Siemens Ag | Steuerverfahren für eine einer Kühlstrecke vorgeordnete Fertigstraße zum Walzen von Metall-Warmband |
CN1329133C (zh) | 2003-02-25 | 2007-08-01 | 西门子公司 | 尤其在轧制金属热轧带材的精轧机列中调节金属带温度的方法 |
ATE360483T1 (de) * | 2003-02-25 | 2007-05-15 | Siemens Ag | Verfahren zur regelung der temperatur eines metallbandes, insbesondere in einer fertigstrasse zum walzen von metallwarmband |
DE10321791A1 (de) * | 2003-05-14 | 2004-12-30 | Siemens Ag | Verfahren zur Regelung der Temperatur eines Metallbandes, insbesondere in einer Fertigstraße zum Walzen von Metall-Warmband |
DE102007050891A1 (de) * | 2007-10-24 | 2009-04-30 | Siemens Ag | Auf der Streuung einer Istgröße eines Walzguts basierende Adaptierung eines Reglers in einem Walzwerk |
EP2386365A1 (de) | 2010-05-06 | 2011-11-16 | Siemens Aktiengesellschaft | Betriebsverfahren für eine Fertigstraße mit Prädiktion der Leitgeschwindigkeit |
-
2010
- 2010-05-06 EP EP10162135A patent/EP2386365A1/de not_active Withdrawn
-
2011
- 2011-03-09 BR BR112012028373A patent/BR112012028373A2/pt not_active IP Right Cessation
- 2011-03-09 EP EP11710447.1A patent/EP2566633B1/de active Active
- 2011-03-09 US US13/696,376 patent/US9630227B2/en active Active
- 2011-03-09 RU RU2012152449/02A patent/RU2545872C2/ru active
- 2011-03-09 WO PCT/EP2011/053513 patent/WO2011138067A2/de active Application Filing
- 2011-03-09 CN CN201180022850.6A patent/CN102939173B/zh active Active
Non-Patent Citations (1)
Title |
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See references of WO2011138067A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011138067A2 (de) | 2011-11-10 |
RU2545872C2 (ru) | 2015-04-10 |
CN102939173B (zh) | 2015-11-25 |
US20130054003A1 (en) | 2013-02-28 |
WO2011138067A3 (de) | 2011-12-29 |
US9630227B2 (en) | 2017-04-25 |
EP2386365A1 (de) | 2011-11-16 |
RU2012152449A (ru) | 2014-06-20 |
BR112012028373A2 (pt) | 2017-06-13 |
EP2566633B1 (de) | 2015-04-29 |
CN102939173A (zh) | 2013-02-20 |
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