WO2011036093A2

WO2011036093A2 - Control method for a processing line for a stretched rolling stock

Info

Publication number: WO2011036093A2
Application number: PCT/EP2010/063663
Authority: WO
Inventors: Matthias Kurz; Klaus Weinzierl
Original assignee: Siemens Aktiengesellschaft
Priority date: 2009-09-23
Filing date: 2010-09-17
Publication date: 2011-03-31
Also published as: EP2301685A1; EP2480351A2; CN102497941A; WO2011036093A3; CN102497941B; PL2480351T3; EP2480351B1

Abstract

The invention relates to a processing line for a stretched rolling stock (1), having an upstream and a downstream system component (2, 3) directly sequentially run through by the rolling stock (1). One each of the system components (2, 3) is implemented as a production line or as a system component different from the production line. A control device (10) has at least one final size provided thereto for segments (14) of the rolling stock (1) running through the treatment line, said size being derived from a desired end state (Z*) in each case, comprising the corresponding segment (14) of the rolling stock (1) after running through the downstream system component (3). The control device (10) implements at least one determinant (16, 20) of a setting parameter outputting a setting parameter (S, S') to a device (6, 15, 18, 21) affecting at least one state (Z) of at least one of the segments (14) of the rolling stock (1). The setting parameter (S, S') is output at a point in time at which the at least one segment (14) is present in the upstream line component (2). When determining the setting parameter (S, S'), the determinant (16, 20) of the setting parameter considers expected states of the at least one segment (14) of the rolling stock (1) as determined using a model, said states lying within a prognosis horizon (PH1 to PH5) of the corresponding setting parameter determinant (16, 20). The prognosis horizon (PH1 to PH5) is determined such that the setting parameter determinant (16, 20) considers at least one state predicting for the at least one segment (14) of the rolling stock (1) when determining the setting parameter (S, S') output thereby, said state being expected of the at least one segment (14) of the rolling stock (1) in the downstream system component (3).

Description

description

Control method for a treatment system for a Langge ^¬-stretched rolling

The present invention relates to a control method for a treatment plant for an elongate rolling stock, in particular ^¬ a strip-shaped rolling stock,

- wherein the treatment plant has at least one upstream part of the plant and a downstream part of the plant, which are passed through by the rolling stock immediately after each other,

- The upstream or downstream plant part is designed as a finishing train, in which the rolling stock is cut cross-cutting reduction, and the other part of the plant as ^¬ from the finishing train different plant part is ^¬ forms,

wherein a control device for the treatment plant is predetermined in each case at least one final variable for sections of the rolling stock passing through the treatment plant,

- Wherein the respective final size is derived from a respective desired ^¬ th final state, which should have the respective portion of the rolling stock after passing through the downstream part of the plant.

The present invention further relates to a Computerpro ^¬ program, comprising machine code, can be executed directly by a control device for a treatment system for a rolling stock, in particular ^¬ sondere a strip-shaped rolling stock and its processing effected by the control device, that the control device performs such a control method ,

The present invention further relates to a control device for a treatment plant for a rolling stock, in particular ^¬ special a strip-shaped rolling stock, which is designed such that it performs such a control method during operation. The aforementioned objects are well known. Purely by way of example to DE 101 56 008 AI or kor ^¬ respondierende US 7,197,802 B2 reference. The EP 1 596 999 B1 or the corresponding US Pat. No. 7,251,971 B2 and US Pat. No. 7,310,981 B2 can also be mentioned in this connection.

In the control methods of the prior art, usually each piece of equipment is controlled separately by itself. If - purely exemplary - the upstream part of the plant is designed as a finishing mill and the downstream part of the plant is designed as a cooling section, the finishing train is operated in the art usually that the Ab ^¬ sections of the rolling stock (on the outlet of the finishing train = inlet of the cooling section ) have a predetermined final rolling temperature. Then cooling of the sections of the rolling stock takes place in the cooling section, so that the sections of the rolling stock leave the cooling section at a predetermined reel temperature. A tuning of the operation of the two system parts takes place in the prior art only in that the final rolling temperature of the respective section is detected metrologically and the cooling section is specified as the starting value for the respective Ab ^¬ cut.

The procedures of the above state of the art set against the conventional art a step forward. Because with this prior art, a plant part overarching control of loading ^¬ treatment plant is done. In particular, for each section of the rolling stock expected temperatures, which are determined by means of a plant-part cross-model are cyclically continued ^¬ written. On the basis of the respectively expected temperatures and the corresponding setpoint temperatures, a control variable is determined in each case in the prior art, which is output to a device which directly influences the state of the respective section of the rolling stock.

The manipulated variable detectors, by means of which the manipulated variables for the individual devices are determined, can be used as be designed conventional controller, for example, as a P, PI or PID controller. It is already known from the cited prior art to design the controllers as prediction controllers which have a prediction horizon. In particular, the procedure latter is already leading to re ^¬ tively good results. However, the last-mentioned approaches can still be improved, in particular with regard to the configuration of the manipulated variable determination. The object of the present invention is to carry out a corresponding improved control variable determination.

The object is achieved by a control method having the features of claim 1. Advantageous embodiments of he ^¬ inventive control method are the subject of dependent claims 2 to 12.

According to the invention - in addition to the features mentioned above - provided

that the control device implements at least one manipulated variable averaging,

- in that the manipulated variable determiner outputs a manipulated variable of at least one state of at least one of the sections of the treatment plant ^¬ continuous rolling influencing means,

- That the manipulated variable investigator outputs the manipulated variable at a time at which the at least one section is located in the upstream part of the plant,

in that the manipulated variable determinant takes into account model-based expected states of the at least one section of the rolling stock which are within a first prognosis horizon of the respective regulator, and

- That the first prognosis horizon is determined such that the manipulated variable investigator in the determination of the output by him manipulated variable at least one for the at least a portion of the rolling projected state be ^{¬ taken into} account, which is expected for the at least a portion of the rolling stock in the downstream part of the plant. In a possible embodiment of the present invention, it is provided

- That the control device for each section of Walzgu ^¬ tes each implemented a manipulated variable, which during the entire passage of the respective section of the rolling stock by the treatment plant as local

Stellgrößenermittler remains coupled to the respective section of the rolling stock, and

- that the respective local manipulated variable determiner then outputs a manipulated variable of a ^¬ the state of the treatment plant continuous rolling ^¬ good locally influencing device when the respective means acts on the respective section of the rolled stock. As a result, the manipulated variable determination can be simplified.

Preferably, it is provided in this embodiment that at least one of the state of the treatment plant passing through rolling material locally influencing facilities is arranged in the upstream part of the plant.

The control device may alternatively be formed as a single, not divided into a plurality of sub-control devices, controlling the entire treatment plant control device or be divided into several sub-control devices. In the latter case, the respective actuating ^¬ size investigator is preferably implemented during the entire passage of the jeweili ^¬ gene portion of the rolled material through the treatment plant on the same part of the control device.

Alternatively or in addition to the local manipulated variable detectors, the control device can implement a manipulated variable detector for all sections of the rolling stock, which acts as a global manipulated variable determinator on the mass flow of the rolling stock.

If both the global and the local manipulated variable investigators are implemented, it is preferably provided that - that the manipulated variables determined by the local manipulated variable detectors in accordance with the manner explained above are initially provisional manipulated variables, wherein the local manipulated variable investigators determine the provisional manipulated variables on the assumption that a currently given Massenfluss- course is not changed,

- that the global control variable investigators determined a new mass flow curve based on input ^¬ sizes,

- that the input quantities at least those of the local

Manipulated variable investigators determined provisional manipulated variables and at least one evaluation parameter for the preliminary manipulated variables include, the evaluation parameter a mini ^¬ times possible manipulated variable, a maximum manipulated variable, a maximum possible change in manipulated variable or an intermediate is's value between the minimum possible controlling variable ^¬ SSE and maximum possible manipulated variable is, and

- that the local command value determinants their final

Determine manipulated variables on the basis of the provisional manipulated variables, the currently given mass flow profile and the new mass flow curve.

Further input variables of the global manipulated variable determiner can be determined as required. Preferably vorgese ^¬ hen that the input variables and expected states Any artwork least a portion of the rolling stock, which has not yet been run in the upstream part of the plant, and / or determined for this section of the rolled stock from a corresponding local control variable investigators expected preliminary manipulated ^¬ sizes and include the respective corresponding evaluation size.

In general, the at least one manipulated variable determiner are at multiple time points in each case a manipulated variable to the status at ^¬ at least one of the portions of the Behandlungsan- would continuous rolling influencing means from. In this case, often the time interval of a first and a second of the times is smaller than the first prog ^¬ nose horizon. This makes it possible for the at least one ne manipulated variable to determine the output at the first of the times manipulated variable one for the second of the times expected manipulated variable and this expected manipulated variable in the determination of temporally after the second of the times, but still within the first forecast horizon predicted states considered. In particular, the at least one manipulated variable determiner can be designed as a model-predictive controller. The first forecast horizon can be determined as needed.

In particular, the first prognosis horizon can be determined in such a way that it extends at least from the initial influencing of the state of the rolling stock in the upstream part of the installation to the outlet of the rolling stock from the downstream part of the installation.

As far as described so far, the prognosis refers only to the individual sections of the rolling stock. The control method can be further improved in that the control device for at least one of the condition of the rolling devices influencing expected within a second forecast period states of the respective device he ^¬ averages and that the control device, the expected during the ^two-¬ th forecast horizon states of the respective The device is taken into account in the determination of the manipulated variables output by the manipulated variable detectors to the respective device.

In a preferred embodiment of the control method according to the invention, it is provided that the at least one

Stellgrößenermittler determines the manipulated variable by optimizing (ie maximizing or minimizing) a target function, wherein in the target function except the deviation of a predicted state of at least a portion of the rolling stock of a corresponding desired state, an energy consumption of the treatment plant received. By doing so, it is possible, possibly to minimize the energy requirements of the treatment plant to reduzie ^¬ ren and even. The finishing train usually has several rolling stands, which are passed through by the rolling stock during the passage of the finishing line in succession. The control method according to the invention is inter alia applicable when no cooling devices are arranged before the first by rolling stand of the finishing train and Zvi ^¬ rule the roll stands of the finishing line.

It is possible that the upstream part of the plant is designed as a finished street and the downstream part of the plant is designed as a cooling section. In another possible ^embodiment , the downstream part of the plant is designed as a finishing train. In this case, the upstream part of the installation is preferably designed as a furnace, for example as an induction furnace. The control method according to the invention is particularly applicable to an embodiment of the treatment plant in which the furnace is preceded by a roughing, Vorstrus a continuous casting is arranged upstream and the plant is operated at a casting speed, so that a speed at which the rolling enters the finishing train , Is determined by the casting speed and the cross-section ^¬ decrease of the rolling stock in the roughing train.

The object is further achieved by a computer program of the type mentioned above, the machine code is designed such that its execution by the Steuerein ^¬ direction causes the controller performs an inventive control method. The computer program can in particular be stored on a data carrier in machine-readable form (in particular in an exclusively machine-readable form, for example electronically).

The object is further achieved by a control device for a treatment plant for a rolling stock, in particular a strip-shaped rolling stock, which is designed such that it performs an inventive control method during operation ^¬ . Further advantages and details will become apparent from the following description of exemplary embodiments in conjunction with the drawings. 1 shows schematically a treatment plant for a

rolling,

2 to 5 possible embodiments of the ^{Behandlungsanla ¬} ge of FIG 1,

FIGS. 6 to 9 are flow charts and FIGS

10 and 11 possible embodiments of a control device.

According to FIG 1 comprises a treatment system for a rolling stock 1-stretched Langge ^¬ an upstream and a lower-tier system part 2; 3. The upstream and nachge ^¬ arranged plant part 2, 3 are passed through by the rolling stock 1 immediately after each other. The rolling stock 1 may in particular be a strip-shaped rolling stock. It usually consists of a metal, for example steel, aluminum, copper, brass or another non-ferrous metal.

The upstream or downstream plant part 2, 3 is designed as a finishing train. In the embodiments of Figures 2 and 3, the upstream part of the plant 2 is designed as a finishing train. In the embodiments according to FIGS 4 and 5, the downstream part of the plant 3 is as finishing train forms ^¬.

Regardless of whether the upstream or the downstream plant part 2, is designed as a finishing mill 3, the finished ^¬ road usually several roll stands 4, which are traversed by the rolling stock 1 during the passage through the finishing train one after ^¬ other. In the rolling stands 4 of the finishing mill, the rolling stock 1 is rolled in a cross-section reducing manner. The number of rolling stands 4 is generally between 4 and 8, for example at 6 or 7. Alternatively, a reversing of rolling can take place. In this case, a single roll stand 4 is usually available. The other part of the plant 3, 2 is formed as ver of the finishing road ver ^¬ separate plant part. According to the 2 and 3, the downstream part of the plant is designed as a cooling section, which has a roller table 5 and 6 cooling devices. In the cooling section, the cross section of the rolling stock 1 (with the exception of the thermal shrinkage) is not changed. In the cooling section, therefore, no reshaping of the rolling stock 1 takes place more. According to FIGS. 4 and 5, the upstream system part 2 is designed as a furnace, for example as an induction furnace.

As indicated by dashed lines in FIG 1, it is possible that the upstream part of the plant 2 in turn another upstream part of the plant 7 is arranged upstream. For example, in the ^embodiments of FIGS. 2 and 3 of the finishing train, an oven and / or further components may additionally be arranged upstream. In the embodiment according to FIG. 5, for example, the furnace is preceded by a roughing road as a further plant part 7. The pre ^¬ road turn is preceded by a continuous caster. 8 Likewise, the subordinate plant part 3 according to the dashed representation of FIG 1 further plant parts 9 may be arranged downstream. For example, in the processing of Figure 4 ^¬ Ausgestal the finishing train can be arranged downstream as another system part 9, a cooling section.

The other plant parts 7, 9 can be integrated in with the nä below ^¬ forth described control concept. Alter ^¬ natively, it is possible to operate only the upstream and downstream plant part 2, 3 in accordance with the invention and to operate the other parts of the plant 7, 9 otherwise.

The boundaries between the plant parts 8, 7, 2, 3, 9 can be determined as needed. In particular, the boundaries between the plant parts 8, 7, 2, 3, 9 between the last active element of the respective upstream plant part 8, 7, 2, 3 and the first active element of the respective downstream Anla ^¬ genteils 7, 2, 3, 9 are. The border between an oven and an upstream part of the plant 7, beispielswei ^¬ se the roughing 7, therefore, lies between the last frame of the roughing train 7 and the first heater 18 of the furnace. In an analogous manner, the boundary between an oven and the finishing line is between the last heating device 18 of the furnace and the first stand 4 of the finishing train. The boundary between the finishing train and the cooling section is between the last rolling stand 4 of the finishing train and the first cooling device 6 of the cooling section. If a temperature measuring station 19 (or another measuring station, for example for the strip thickness or the strip profile) is arranged between in each case two directly successive plant parts 8, 7, 2, 3, 9, preferably the location of the corresponding measuring device 19 forms the boundary between the plant parts 8, 7, 2, 3, 9.

The treatment installation of FIGS. 1 to 5 is controlled by a control ^device 10 (shown only in FIG. 1). As a rule, the control device 10 is designed as a software programmable control device. This is because ^¬ by indicated in FIG 1, that the letters μΡ "are inscribed within the control device 10 ,,. The operation of the controller 10 is therefore determined by a computer program 11. The computer program 11 comprises machine code 12, which by the control device 10 The processing of the machine code 12 by the control device 10 causes the control device 10 to carry out a control method, which is explained in more detail below according to the invention performs control method.

The computer program 11 can be supplied to the control device 10 in any desired manner, for example via a computer-computer connection. In particular, a supply via the World Wide Web or a Local Area Network come into question. Alternatively, it is possible to associate the computer program 11 with the control device 10 via a mobile data carrier 13. on which the computer program 11 is stored in machine-readable form. Purely by way of example, the mobile data ^¬ carrier 13 is illustrated in FIG 1 as a USB memory stick. However, it could also be designed differently.

Below a possible OF INVENTION ^¬ dung invention control method will be explained in conjunction with FIG. 6

According to FIG. 6, the control unit 10 is supplied with a current state Z and the instantaneous location of a point 14 of the rolling stock 1 in a step S1. The current location is related to the processing plant. It lies at the beginning of the vorgeord ^¬ Neten plant part 2, in the embodiment of Figures 2 and 3, for example, in front of the first rolling stand 4 of the finished road. If the finishing train, as shown in FIG. 2, has interstitial cooling devices 15 and a derar ^¬ tige intermediate scaffold cooling device 15 is arranged in front of the first rolling stand 4 of the finishing train, the location is also in front of this interstate cooling device 15. If necessary, the place may also be further forward ,

In the case of other embodiments of the treatment plant, in ^¬ example, the embodiment of FIG 4, the location is located elsewhere. If, for example, a prefabricated oven is included in the control method ^according to the invention, the location must be in front of the oven, more precisely in front of the first heater 18 of the oven. In general, the location must be arranged before the beginning of the first part of the installation involved in the control method according to the invention or even further in front.

The state Z can be specified to the control device 10 from the outside or otherwise predetermined. Alternatively, it can be detected metrologically. Also mixed forms are possible. For example, to determine the energetic state of the relevant point 14 at the current location, a temperature measuring station 19 may be arranged, by means of which the current temperature T of the point 14 of the rolling stock 1 at whose surface is detected. The temperature profile over the thickness of the rolling stock 1 can be determined, for example, via a model. Such models are well known to those skilled in the art.

It is possible that the energetic state is already completely described by the temperature T of the point 14. In practice, the temperature T is often in a range in which, based on the temperature, it can be clearly decided in which phase state the rolling stock 1 is present. For example, when rolling steel, the temperature at the entrance of the finishing train is usually 1,000 ° C or more and thus far above the transformation temperature (about 723 ° C to 911 ° C) of steel. It is therefore known that the rolling stock 1 is in the phase state "austenite" in this case.

The dimensions of the rolling stock 1 - for example, in a strip-shaped rolling stock, the strip thickness and the bandwidth - Kings ^¬ nen otherwise be determined or the control device 10 may be known in other ways.

In a step S2, the control device 10 uses a desired final state Z *, which the point 14 should have after passing through the downstream system part 3, to determine a desired final variable. For example, the Steuerein ^¬ device 10 may determine a desired Endenthalpie, a ge ^¬ desired final temperature, a desired phase portion of the rolling material 1, for example of steel the content of austenite, etc. Alternatively, to determine the final size of the desired final size of the control device 10 may also be predetermined become.

In a step S3, the control device 10 for the detected point 14 implements a manipulated variable determinator 16 (see FIGS. 10 and 11). The manipulated variable determiner 16 is initialized and started in the context of the step S3 with the state Z of the corresponding point 14. The manipulated variable ^¬ average 16 is coupled as a local manipulated variable determiner 16 to the respective point 14 of the rolling stock 1. He remains rend the entire run of the point 14 through the treatmen ^¬ treatment plant coupled to this point fourteenth

The implemented local manipulated variable determiner 16 always outputs a manipulated variable S to a device of the treatment system when the respective device acts on the respective point 14 of the rolling stock 1. The respective loading means influenced state Z of the treatment facility pres ^¬ fenden rolled material 1 only locally, ie at the point at which the respective device is arranged. Other posts of the

Rolled stock 1, although possibly affected by other devices, but not by that device, at the time the device concerned acts on the relevant point 14 of the rolling stock 1.

The times at which the individual devices of the treatment plant - for example, the cooling devices 6 and the intermediate-frame cooling devices 15 of FIG. 2 or the heating devices 18 of the furnace of FIG. 4 - act on the corresponding point 14 of the rolling stock 1 can be readily determined. The skilled person be ^¬ knew - - in particular, a monitoring trip can be implemented.

In a step S4, the local manipulated variable determiner 16 applies a provisional manipulated variable profile. In a step S5, the local manipulated variable determiner 16 determines within a forecast period using a model 17 of the rolling stock 1, which is implemented within the control device 10, egg ^¬ NEN expected state of the corresponding point 14, which is expected at the end of the forecast period. The local positioning ^¬ size determinator 16 determines the expected state of the corresponding point 14 on the assumption that a currently given mass flux profile, with which the corresponding point 14 passes through the treatment plant now and forward in the future visual, is not changed.

As a rule, time-dependent differential equations must be solved to determine the expected state. It is in this case, it is necessary to update the state in small time steps. In this case, therefore, the entire state history is determined. The corresponding models 17 are known as such and not the subject of the present invention. They are based on the Fourier heat equation, phase transformation models, heat transfer models, rolling models, etc. As part of the prognosis, the local manipulated variable ^¬ investigator 16 on the one hand the manipulated variable S, with which he next controls one of the state Z of the corresponding point 14 influencing devices. In individual cases - for example, if only a single heating ^{¬ device} 18 is present - outputs the local manipulated variable determiner 16 only at a single time a manipulated variable S from. As a rule, however, the local command value determiner 16 outputs a manipulated variable S at several points in time to the device which directly influences the respective point 14 of the rolling stock 1. If the time interval of the further time points from the instant at which the local actuating ^¬ size determinator outputs its manipulated variable S, is smaller than the forecasting horizon of the local manipulated variable determiner 16, determines the local manipulated variable determiner 16 not only the next output manipulated variable S, but also for the additional time points within the forecast horizon are each an expected manipulated variable. Here, too, the local manipulated variable determiner 16 assumes that the instantaneous mass flow profile, with which the point under consideration 14 is likely to pass now and in the future, does not change. The determined expected actuating ^¬ sizes of the local manipulated variable determiner 16 naturally takes into account in the determination of the end of the forecasting sehorizonts expected state of the corresponding point 14 of the rolling stock 1. The local manipulated variable determiner 16 may be formed for this purpose, especially as a model predictive controller. In a step S5, the local command value determiner 16 determines its manipulated variable S by optimizing (ie minimizing or maximizing) an objective function. The deviation of the predicted state from a corresponding desired state of the point 14 of the rolling stock 1 is, of course, entered into the objective function. Alternatively, in this case the states themselves or from the states derived variables Hérange ^¬ subject can be. In addition to the desired final state, the control device 10 can also be predetermined for other locations of the treatment plant and / or for certain times, calculated from the arrival of the corresponding point 14 of the rolling stock 1 in the treatment ^¬ system, desired intermediate states. If this is the case, of course corresponding desired intermediate variables are determined for the corresponding locations and / or times and taken into account in the determination of the manipulated variable S of the local manipulated variable determiner 16. The objective function is usually a function with a large number of variables. The objective function is usually minimized (or maximized) according to the SQP procedure. The SQP process is known to those skilled in the art. The local manipulated variable determiner 16 outputs the manipulated variable S, which is determined by it, to be currently outputted in a step S7 to the device by means of which the state Z of the relevant point 14 can be influenced at the moment. The corresponding device determines the control device 10, for example by means of the already mentioned tracking. Furthermore, the respective local manipulated variable ^¬ average 16 updates the state Z of the point 14 assigned to it.

As already mentioned and also shown in FIG. 2, the local manipulated variable determinator 16 can act, for example, on cooling devices 6, 15. The cooling devices can be arranged in the cooling section of FIG. Alternatively or additionally ^¬ the cooling means can be switched on in the finishing train Similarly, for example, in the embodiments of Figures 4 and 5, the local manipulated variable detector 16 act on the heaters 18 of the furnace. Also in this case, the corresponding devices are thus arranged in the upstream part of the plant 2.

The prediction horizon of the local manipulated variable determiner 16 is suitably determined. In particular, it is determined in such a way that, at normal rolling speeds, the local actuating variable determinator 16 at a time at which it actuates a device located in the upstream part 2 (for example, in the embodiment according to FIG. 2, one of the intermediate stand cooling devices 15 or in the embodiment according to FIG Heating means 18 of the furnace) takes into account a predicted state of the corresponding point 14 of the rolling stock 1, which is assumed by the corresponding point 14 of the rolling stock 1 only when the corresponding point 14 is located in the downstream part of the plant 3.

This is illustrated in FIG 2 illustrate the fact that purely by way of example different possible Progno ^¬ sehorizonte are located. The possible Prognosehori- horizons are be ^¬ draws in FIG 2 by the references to PHL PH3.

According to the forecast horizon PHl, the local command value determiner 16, when determining the manipulated variable S for the last intermediate stand cooling device 15 of the finishing train, considers expected states of the corresponding point 14 of the rolling stock 1 which the corresponding point 14 assumes only in the cooling section. According to the forecast horizon PH2 this is already the case when the local manipulated variable determiner 16, the manipulated variable S for the penultimate Zwischenge ^¬ rüstkühleinrichtung 15 determined. According to the prognosis horizon PH3, the prognosis horizon may even be determined in such a way that it changes from the first influencing of the state of the Walzgutes 1 in the upstream part of the plant 2 (ie example ^¬ in FIG 2 in the first rolling stand 4 upstream intermediate stand cooling device 15, in the embodiment of FIG 4 in the first heater 18) to the expiry of the rolling stock 1 from the downstream part of the plant 3 he ^¬ stretched , Analogous embodiments of course also apply to the embodiments of the treatment plant according to FIGS. 3, 4 and 5. The prognosis horizon can be static or dynamic. Preferably, the forecast period to the beginning of the prognosis is static until the forecast horizon the end of the nachgeordne ^¬ th installation part 3 (or in general the last included in the inventive control method system component) ER ranges. Thereafter, the forecast period is preferably shortened dyna ^¬ mixed, so that it extends from the respective current position of the respective local manipulated variable determiner 16 associated with point 14 to the end of the downstream part of the plant. 3 In this case, the forecast horizon can be thought of as a telescope stick with one end bound to point 14 associated with the respective local manipulated variable determiner 16 and the other end "protruding into the future." The telescope stick remains extended until the other end the end of the downstream part of the plant 3 "abuts". After that, the telescoping rod corresponding to "together ^¬ quantitative pushed".

In steps S8 and S9, the control device 10 checks whether the point in question has escaped from the downstream plant part 3, that is, for example, has left the cooling section in the embodiment of FIG. If this is not the case, the controller 10 proceeds to step S4 to reset ^¬. If so, the controller 10 proceeds to step S10. In step S10, the control device 10 deletes the local manipulated variable determiner 16 implemented for the leaked point 14. The leaked point 14 is not further considered - at least in the context of the control method according to the invention. Optionally, it is possible to arrange further measuring devices 19 between the individual system parts 2, 3 and / or behind the downstream system part 3 - according to the embodiment of FIG. 2, for example between the finishing train and the cooling section and / or behind the cooling section With the desired final size correlated size G is detected, for example, the temperature T of the corresponding point 14 of the rolling stock 1. In this way, it is possible, for example, to adapt the model 17. The corresponding procedure is known as such and as such is not the subject of the present invention.

The method of FIG. 6 is executed in a clocked manner. By way of example, in each case a new point 14 of the rolling stock 1 is detected in each case with a work ^cycle which is generally between 0.1 and 1.0 seconds. Preferred values of Arbeitstak ^¬ tes lie between 0.2 and 0.5 seconds, for example 0.3 seconds. 6 explained method, therefore, the controller 10 executes the above in connection with FIG parallel for all the points 14 of which are located at a given time ^¬ point in the treatment plant.

Furthermore, the rolling stock 1 has a constant or variable input speed v when it enters the upstream part of the installation 2. Each of the points 14 corres ^¬ diert therefore with a portion of the rolling stock 1, the length v is the product of the working cycle with the current Eingangsge ^¬ speed with which the corresponding point 14 enters the upstream part of the plant. 2

The method explained below in conjunction with FIG. 7 is preferably used in the embodiment of the treatment installation according to FIG. 2 or FIG. The method points

Steps Sil to S24 on. The steps Sil to S20 correspond to 1: 1 with the steps Sl to S10 of FIG

Steps Sil to S20, therefore, no further explanations are required. In step S21, the controller 10 implements a global manipulated variable determiner 20 (see FIGS. 10 and 11). The global manipulated variable determinator 20 acts on the mass flow of the rolling stock 1 and thus on all points 14 / sections 14 of the rolling stock 1 at the same time. The integration of the global actuator ^¬ size detector 20 in the control method according to the invention is achieved by the steps S22 and S23.

In step S22, the global manipulated variable determiner 20 determines a new mass flow profile. The determination is made on the basis of the manipulated variables S determined by the local manipulated variable determinants 16 in step S16. In the context of step S22, the global manipulated variable determinator 20 preferably takes into account both the variables from the local manipulated variable determiners 16

Step S17 output manipulated variables S as well as the determined by the local manipulated variable detectors 16 expected

Manipulated variables which are within the forecast horizon of the local manipulated variable determinants 16. As part of step S22, the global manipulated variable determinator 20 evaluates the manipulated variables S of the local manipulated variable determiners 16 based on at least one evaluation variable. Both the evaluation variables and the manipulated variables S determined by the local manipulated variable determinants 16 thus represent input variables of the global manipulated variable determinant 20. The evaluation variables may be (per local manipulated variable determiner 16) in particular at least one of the following variables: a minimally possible one manipulated variable,

- a maximum possible manipulated variable,

- an intermediate value between the minimum possible

Manipulated variable and the maximum possible manipulated variable is, and

- a maximum possible manipulated variable change.

The first three of the variables mentioned are for each manipulated variable (regardless of whether output in step S15 or only within the forecast horizon) in each case to the device 6, 15, 18, to which the respective local manipulated variable determiner 16 acts at the corresponding output time. The consideration of the maximum possible manipulated variable change is only meaningful if the global manipulated variable determiner 20 sets a number of manipulated variables S in relation to each other, which are from the same local manipulated variable determiner 16 or from several local variables

Control variable detectors 16 are successively output to the same device 6, 15, 18. In particular, the global manipulated variable determinator 20 can establish and optimize a target function analogous to the local manipulated variable determinants 16. In particular, the target function may contain penalty terms that are punished, if the manipulated variables S of the local manipulated variable determinants 16 are the minimum setting limit and / or the maximum

Approach limit,

if the manipulated variables S of the local manipulated variable determinants 16 are too far away from the intermediate value and / or

- When a requested manipulated variable change approaches the maximum possible manipulated variable change.

In an analogous manner, the manipulated variables S 'of the global manipulated variable determiner 20 can also be evaluated.

By varying the mass flow profile, the global manipulated variable determiner 20 attempts to optimize the evaluation in step S22. For example, the global Stellgrößener ^¬ mid 20 attempts to keep the off by the local control variable investigators 16 to be reproduced and expected manipulated variables S within the allowable range to keep as spaced from the control limits and to maintain the expected rates of change within the allowable frame. At the same time, the global manipulated variable determinant 20 takes into account the corresponding limits for the mass flow. The global manipulated variable determiner 20 can also be designed as a model-predictive controller. In step S23, the local manipulated variable determinants 16 determine their final manipulated variables S on the basis of the provisional manipulated variables, the mass flow curve newly determined in step S22 and the previously valid mass flow profile. In contrast to step S16, in which the local control value Determined ^¬ ler to its forecast horizon calculate the expected state of the corresponding portion 14 of the rolled material 1 must ^¬ sen, it may be sufficient in the context of step S20, only the currently outputted manipulated variables S to scale. But also a complete recalculation is not designed Schlos ^¬ sen. Regardless of the concrete procedure, however, due to the modification of the manipulated variables S in step S23, the manipulated variables S determined in step S16 are only provisional manipulated variables S.

In step S17, only the local manipulated variable determinants 16 output their manipulated variable S to the corresponding devices 6, 15, 18. In a step S24, which is carried out virtually simultaneously to step S17, the global manipulated variable determiner 20 gives to actuators for the mass flow - for example to rotational ^¬ number regulations 21 for the rolling stands 4 - corresponding

Control variables S 'off.

The procedure described in connection with FIG. 7 is of particular importance if, according to FIG. 3, there are ^no interstand ^{cooling devices} 15. However, it is also possible if the Zwischengerüstkühleinein- directions 15 are present. Are present regardless of whether the intermediate scaffold cooling means 15 or not, is the global manipulated variable determiner 20 its command values S 'but at a timing at which a plurality of sections 14 (in the upstream part of the system 2 according to Figures 2 and 3 at ^¬ play, the Finishing line). Analogous to the local manipulated variable determinants 16, the global manipulated variable determiner 20 also has a prognosis horizon. The forecast horizon may be too FIG 2 be ^¬ true analog as needed. It can be equal to the forecast horizon of the local Be manipulated variable detector 16 or be different from this. 3 shows - purely exemplary - some possible Prog ^¬ nosehorizonte of global control variable investigator 20, indicated in FIG 3 with PH4 and PH5. At least (see the forecast horizon PH4), the forecast horizon extends from the beginning of the upstream plant part 2 to the first device 6 of the downstream plant part 3, by means of which the state of the rolling stock 1 can be locally influenced. Maximum (see the forecast horizon PH5) extends the forecast horizon completely from the beginning of the upstream part of the plant 2 to the end of the downstream part of the plant 3, ie until the run ^¬ out of the rolling stock 1 from the downstream part of the plant 3. Even larger forecasting horizons are possible. Of course, analogous embodiments also apply to the embodiments of the treatment plant according to FIGS. 2 and 4.

If the global control variable investigators 20 is present, it is even possible that the input variables of the global control variable investigator comprise 20 also anticipated conditions of sections 14 of the rolling stock 1, which are not yet run in the vorgeord ^¬ Neten system part second It is single ^¬ Lich required for this to be implemented per Section 14 of the corresponding local control variable investigators 16 ahead of time to initialize and start. If this local control variable investigators 16 further ermit ^¬ telt for not yet been accumulated in the upstream plant section 2 Section 14 of the rolling one was waiting for local control variables, the input variables of the global control variable investigator 20 also these expected manipulated variables and the correspond- ing evaluation parameters include.

The procedure of FIG 7 is also applicable to a treatment ^¬ system according to FIG 2. Also, it is applicable to a treatmen ^¬ treatment plant of FIG. 4

As described above, when the manipulated variables S 'of the global manipulated variable determinant 20 and the manipulated variables S of the local manipulated variable determinants 16 are determined, a prog. nose of states Z of the portions 14 of the rolled material 1. To ^¬ additionally, it is possible that the control device 20 for at least one of the state Z of the rolled material 1 beeinflus ^¬ send devices 6, 15, 18, 21 within a further (second) forecasting horizon expected states of the respective device 6, 15, 18, 21 and determines the expected during this forecast horizon states of the respective device 6, 15, 18, 21 in the determination of the manipulated variable determinants 16, 20, to the respective device 6, 15, 18th , 21 'output manipulated variables S, S' into account. This is explained below in more detail erläu ^¬ tert in conjunction with FIGS. 8 and 9 8 shows a possible embodiment of FIG. 6, FIG. 9 shows a possible embodiment of FIG. 7. According to FIG. 8, additional steps S31 and S32 are inserted between the steps S6 and S7. In step S31, the control device 10 determines for at least one of the devices 6, 15, 18, which are influenced by the local manipulated variable determinants 16, their expected states. In step S32, the control device 10 corrects, if necessary, taking into account the expected states of the respective device 6, 15, 18, the manipulated variables S, which are output from the local manipulated variable detectors 16 to the devices 6, 15, 18.

The procedure of FIG. 8 is explained in more detail below with reference to a simple example.

Assume that a certain cooling device 6 of the Kühlstre- bridge acted upon in a specific operating cycle of the control device 10 ^¬ a particular section 14 of the rolling stock 1 with a coolant (e.g. water). In the next Ar ^¬ beitstakt the same cooling device 6 acts upon the next section 14 in the next work cycle to the next section fourteenth

The local manipulated variable determiner 16, which acts on said cooling device in the specific working cycle, has acted as relative manipulated variable 80% determined. The next and the next local over ^¬ manipulated variable determiner 16 which are associated with the two subsequent sections 14 of the rolling stock 1, have calculated as an expected control values 50% and 20%.

Furthermore, it is assumed that the first

Cooling device 6 subsequent cooling device 6 are to be controlled by the three just mentioned local manipulated variable detectors with 60%, 60% and 40%. Assume further that the cooling devices 6 have the same design and can change their coolant flow from one stroke to the next by a maximum of 25%.

If, under the assumptions mentioned above, steps S31 and S32 are not present, only section 6 passing first through the two cooling devices 6 will be correctly identified

80% and 60% cooled. However, the second section can only be cooled by the first cooling device with 55%, because the first cooling device 6, the flow rate of coolant, starting from 80%, can not throttle faster. The error is therefore 5%. The next section is cooled at 30% instead of 20%. The reason is the same: the corresponding cooling device 6 can only throttle the flow of coolant from 55% to 30%. Taking into account the states of the cooling devices 6 and in particular their storage facilities (minimum and maximum refrigerant flow, maximum coolant flow rate change per cycle), however, it is possible to make an intelligent Ver ^¬ shift in the amount of coolant flow, so that for example the first portion 14 behan of the two ^¬ punched cooling means the second portion with 50% and 60% and the third From ^¬ 6 is cooled by 75% and 65%, cut 14 with 25% and 35%. As a result, he ^¬ sufficient that, as a result - as seen across both cooling devices 6 - the three sections is cooled 14 of the rolling stock in the result with the richti ^¬ gen amount of coolant. Due to the clever Verla ^¬ like the coolant amounts can therefore be made an optimization. In an analogous manner, in the procedure according to FIG. 9, steps S41 and S42 may be present after step S16. The steps S41 and S42 correspond in content to the steps S31 and S32 of FIG. 8.

Alternatively or additionally, there may be steps S43 and S44 inserted after step S23. The steps S43 and S44 may also correspond in content to the steps S31 and S32 of FIG. The presence of the steps S43 and S44 in addition to the steps S41 and S42 may therefore be particularly useful because the manipulated variables S of the local manipulated variable determinants 16 may have changed due to the step S22. If appropriate, it may furthermore be useful to follow steps S45 and S46 in step S22. In steps S45 and S46, analogous procedures are taken with respect to the actuators 21 for the mass flow to the steps S31 and S32.

As already mentioned, the manipulated variable determinants 16, 20 determine their respective manipulated variables S, S 'as a rule by optimizing a respective target function. Can be used in the objective function - in addition to the deviation of the forecasted increases article from a corresponding target state - vorzugswei ^¬ se one or enter more of the following sizes:

the distance of the manipulated variables S, S 'from the setting limits of the devices 6, 15, 18, 21 (minimum and maximum values) controlled by the respective manipulated variable determinants 16, 20;

the deviations of the output and future expected manipulated variables S, S 'from an intermediate value, which is usually approximately in the middle between the setting limits of the respective device 6, 15, 18, 21;

- possibly, based on the respective device 6, 15, 18, 21, the distance of the expected manipulated variable changes of the maximum possible rate of change of the set ^¬ sizes S, S '; - In particular, in the case that the treatment plant comprises a furnace, a maximum allowable temperature of Walz ^¬ good 1 and the distance of the actual temperature T of this value;

- a total energy consumption of the treatment plant.

The objective function is better achieved (of course), the smaller the deviation of the expected within the prediction horizon ^¬ PH1 to PH5 state and / or the expected on the forecasting horizon En- de PH1 to PH5 state of the corresponding target states. If one or more of the other variables mentioned above are taken into account, the objective function is better solved, the further the output and future manipulated variables S, S 'are away from the setting limits of the respectively controlled devices 6, 15, 18, 21,

- The closer the deviations of the output and future expected control variables S, S 'are at the intermediate values and / or

- The further the requested rates of change from the maximum possible rates of change of the output and future control variables S, S 'are removed. Alternatively or additionally-preferably as an alternative-for taking account of the setting limits and the maximum possible rates of change of the manipulated variables S, S ', it is possible to set up corresponding equation and inequation secondary conditions in addition to the objective function. In this case, the constraints are taken into account when optimizing (= maximizing or minimizing) the objective function. For example, in the optimization of the objective function as a secondary condition to be considered, it can be established that the cooling by the cooling devices 6, 15 can not be negative and can not exceed a certain (plant-specific, possibly even dynamic) maximum value. The mentioned SQP method is capable of taking into account such constraints. The control device 10 that implements the invention Steuerver go ^¬, has a high computing power aufwei ^¬ sen. It may be possible to realize this processing power corresponding to the illustration of FIG 10 in a single, unified, not divided into several partial control devices control device 10 which controls the entire treatmen ^¬ treatment plant. Alternatively, it is possible according to the Dar ^¬ position of Figure 11, that the control device is divided into several partial control devices 22 10th If such allocation is made, but is vorzugswei ^¬ se each implemented local manipulated variable determiner 16 during the entire run of the respective section 14 of the rolling stock 1 by the treatment plant to a part thereof, and implements control means 22nd Thus, it is preferential not wise so that the respective local control value Determined ^¬ ler 16 is transmitted, for example, in FIG control subsystem shown on the left 11 22 to that in FIG part of control device 22 shown on the right 11, if - for example - the corresponding section 14 of the rolling stock 1 From the upstream part of the plant 2 in the downstream part of the plant 3 passes.

The above-explained procedures are also applicable to the embodiments of the treatment plant according to FIGS. 4 and 5 in analogous form. The only significant sub ^¬ difference is that the portions 14 of the rolling stock 1 is not cooled by means of the heaters 18 of the furnace, but is heated. The present invention has many advantages. Insbeson ^¬ more complete is the first time a plant-part cross-forecast rea ^¬ lisiert. Because, in the prior art, although already a Mo ^¬ dellprädiktion and associated uses a prognosis. The forecasts are made in the prior art, however, always limited to the respective part of the plant 2, 3.

Furthermore, it is possible in particular in the embodiment of the treatment plant according to FIGS 4 and 5, the furnace as upstream unit part 2 to use to set the final rolling temperature at the outlet of the finishing train as a subordinate part of the plant 3. Only the forecast horizon has to be chosen sufficiently large.

This refinement is of decisive importance, in particular, if no intermediate stand cooling devices 15 are present in the finishing train and, on the other hand, the entry speed v at which the rolling stock 1 enters the finishing train is determined for technological reasons. For then there are no actuators available within the finishing train, by means of which the Endwalztemperatur can be set at the exit of the finishing train.

By virtue of the procedure according to the invention, however, the furnace (= upstream plant part 2) can be used to set the final rolling temperature (not the inlet temperature at the entrance of the finishing train) accordingly.

The input speed v at which the rolling stock 1 enters the finishing train, for example, be determined because the finishing mill according to the representation of FIG 5 on the one hand as a further upstream device 7 the roughing and this in turn the continuous casting 8 pre ^¬ assigns are. For a casting speed of the continuous casting 8 is essentially determined by the solidification behavior of the cast metal and adjustable only within very narrow limits. The input speed v of the rolling stock 1 is determined in this case by the more or less fixed predetermined casting speed and the cross-sectional decrease of the rolling stock 1 in the roughing train.

The above description is only for explanation of the present invention. The scope of the present invention, however, is intended to be determined solely by the appended claims.

Claims

claims

1. A control method for a treatment system for a Langge ^¬-stretched rolled metal (1), in particular a strip-shaped rolling stock (1),

- wherein the treatment plant has at least one upstream plant part (2) and a downstream plant part (3), which are passed through by the rolling stock (1) immediately after each other,

- wherein the upstream or downstream plant part (2, 3) is designed as a finishing train in which the rolling ^¬ well (1) is rolled Querschnittreduzierend, and the other part of the plant (3, 2) is formed as different from the finishing section of the plant part,

- wherein a control device (10) for the ^{Behandlungsanla ¬} ge for sections (14) of the treatment plant durchlau ^¬ fenden rolling stock (1) is in each case at least one final size pre ^¬ give,

- wherein the respective final size from a respective desired th final state (Z *) is derived which the respective Ab ^¬ section (14) of the rolling stock (1) after passing through the downstream part of the plant (3) is to have,

- wherein the control means (10) implements at least one controlling variable ^¬ ßenermittler (16, 20),

- wherein the manipulated variable determiner (16, 20) the treatment system by running at least one state (Z) of at least one of the sections (14) of the rolled material (1) impressed ^{¬-influencing} device (6, 15, 18, 21), a manipulated variable (S, S '),

wherein the manipulated variable determinator (16, 20) outputs the manipulated variable (S, S ') at a point in time at which the at least one section (14) is located in the upstream part of the installation (2),

- Wherein the manipulated variable determinants (16, 20) in the determination of the manipulated variable (S, S ') modeled determined expected

States of the at least one section (14) of the rolling stock (1) taken into account within a first prognosis rizonts (PH1 to PH5) of the respective manipulated variable determinants (16, 20),

- wherein the first prognosis horizon (PH1 to PH5) is so be ^¬ true that the manipulated variable determinants (16, 20) in determining the output from it manipulated variable (S, S ') at least one for at least a portion (14) of the rolling stock (1) predicted state that is expected for the at least one section (14) of the rolling stock (1) in the downstream part of the plant (3).

2. Control method according to claim 1,

characterized ,

- That the control device (10) for each section (14) of the rolling stock (1) in each case a Stellgrößenermittler (16) implemented, during the entire passage of the respective section ^¬ (14) of the rolling stock (1) by the Be ^¬ treatment plant as local actuating variable determinator (16) remains coupled to the respective section (14) of the rolling stock (1), and

- that the respective local manipulated variable determiner (16) then pass through a state (Z) of the treatment plant ^¬ the rolled stock (1) locally influencing means (6, 15, 18), a manipulated variable (S) when the respective A ^¬ direction (6, 15, 18) acts on the respective section (14) of the rolling stock (1).

3. Control method according to claim 2,

characterized in that min ^¬ least one of the state (Z) of the treatment system by passing rolled stock (1) locally influencing means (15, 18) in the upstream part of the system (2) is arranged.

4. Control method according to claim 2 or 3,

d a d u r c h i n c i n e s that the

Control device (10) as a uniform, not divided into a plurality of sub-control devices, the entire treatment ^¬ system controlling control device (10) is formed or that the control device (10) is divided into several sub-control devices (22), the respective local

Manipulated variable detector (16) but during the entire passage of the respective section (14) of the rolling stock (1) by the treatment plant on one and the same Teilsteuerein ^¬ direction (22) is implemented.

5. Control method according to one of the above claims,

The control device (10) implements a manipulated variable detector (20) for all sections (14) of the rolling stock (1), which acts as a global manipulated variable determinator (20) on the mass flow of the rolling stock (1).

6. A control method as claimed in claim 5 and any one of claims 2, 3 and 4, d a d e c o v e c e n e c e n e,

- That the control variables (S) determined by the local manipulated variable investigators (16) in accordance with the manner explained above are initially provisional manipulated variables (S), wherein the local manipulated variable determinants (16) are the preliminary variables

Determining manipulated variables (S) on the assumption that a currently given mass flow profile is not changed,

- that the global manipulated variable determiner (20) determines a new mass flow profile based on input variables,

- that the input quantities at least those of the local

Manipulated variable detectors (16) determined provisional manipulated variables (S) and at least one evaluation variable for the provisional manipulated variables (S), wherein the evaluation variable is a minimum possible manipulated variable, a maximum manipulated variable, a maximum possible manipulated variable change or an intermediate value that between the minimal Moegli ^¬ chen control value and the maximum possible control variable is, and

- That the local manipulated variable determining means (16) determine their final manipulated variables (S) on the basis of the provisional manipulated variables (S), the currently given mass flow profile and the new Mas ^¬ senflussverlaufs.

7. Control method according to claim 6,

d a d u r c h i n c i n e s that the

Input variables also expected states of at least one Ab ^{¬ section} (14) of the rolling stock (1), which has not yet entered the vorgrangete plant part (2), and / or for this section (14) of the rolling stock (2) of a corresponding local expected variable manipulated variable (16) determined expected Vorläu ^¬ fige manipulated variables and the respective corresponding evaluation ^¬ size.

8. Control method according to one of the above claims,

characterized ,

(The at least one manipulated variable determiner (16, 20) at multiple time points in each case a manipulated variable (S, S ') to the state (Z) of at least one of the sections (14) of the treatment system by passing rolled stock (1) imposing ^{¬-influencing} device - 6, 15, 18, 21),

that the time interval of a first and a second of the times is smaller than the first forecast horizon (PH1 to PH5),

- That the at least one manipulated variable determining means (16, 20) for determining the output at the first of the times

Manipulated variable (S, S ') is determined for the second of the time he ^expected waiting manipulated variable and

- That the at least one manipulated variable determinants (16, 20) takes into account the expected for the second of the timing manipulated variable in the determination of the temporally after the second of the times, but still within the first forecast horizon (PH1 to PH5) predicted states.

9. Control method according to claim 8,

That is, the at least one manipulated variable determinator (16, 20) is designed as a model-predictive controller.

10. Control method according to one of the above claims,

characterized in that the first forecast horizon (PH1 to PH5) is determined in such a way that that it extends at least from the first influencing the ZuStands (Z) of the rolling stock (1) in the upstream part of the plant (2) to the expiry of the rolling stock (1) from the downstream part of the plant (3).

11. Control method according to one of the above claims,

That means that the control device (10) expects at least one of the devices (6, 15, 18, 21) influencing the state (Z) of the rolling stock (1) within a second forecast horizon

Determined states of the respective device (6, 15, 18, 21) and that the control device (10) during the second prognosis horizon expected states of the respective device (6, 15, 18, 21) in the determination of the manipulated variables ( 16, 20) to the respective device (6, 15, 18, 21) output manipulated variables (S, S ') taken into account.

12. Control method according to one of the above claims,

characterized in that the manipulated variable determining means (16, 20) determines the manipulated variable (S, S ') by optimizing a target function, wherein in the target function except the deviation of a predicted state of at least a portion (14) of the rolling stock (1) of a corresponding desired state Energy consumption of the treatment plant is received.

13. computer program having machine code (12) which can be processed directly by a control device (10) for a treatment plant for a rolling stock (1), in particular a strip-shaped rolling stock (1) and whose processing is effected by the control device (10) in that the control device (10) carries out a control method with all the steps of a control method according to one of the above claims.

14. Computer program according to claim 13,

characterized in that it is stored on a data carrier (13) in machine-readable form.

15. Control device for a treatment plant for a rolling stock (1), in particular a strip-shaped rolling stock (1), characterized in that it is designed such that it performs a Steuerverfah- ren operation with all the steps of a control method according to one of claims 1 to 12 ,