JP2024514221A - Roll steering control system and method for tandem mill - Google Patents

Abstract

A system and associated method for controlling roll steering during rolling of a metal substrate may include a steering control actuator adapted to control tilt of a work roll of a workstand of a rolling mill, a sensor configured to measure a parameter of the metal substrate upstream of the workstand, and a controller operatively connected to the steering control actuator and the sensor. The controller may generate a model of the workstand, determine adjustments for the workstand, receive the measured parameters from the sensor, and determine a predicted output parameter by adjusting the measured parameters by the adjustments. The controller may also compare the predicted output parameter to a target output parameter and operate the steering control actuator such that the predicted output parameter is within a predetermined tolerance of the target parameter.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS This application claims the benefit of and priority to U.S. Provisional Application No. 63/177,129, filed April 20, 2021, and the entirety of this application is hereby incorporated by reference in its entirety. Incorporated herein by reference for that purpose.

TECHNICAL FIELD This application relates generally to metal processing and, more particularly, to systems and methods for roll steering control in rolling mills.

Rolling is a metal forming process in which a metal substrate is passed through a pair of work rolls on a work stand. The resulting contact between the metal substrate and the work roll affects the thickness profile, flatness, and quality of the metal substrate. The tilting of the work roll relative to the pathline of the metal substrate through the workstand, or roll steering, is one mechanism that can be used to influence the parameters of the metal substrate exiting the workstand. Traditionally, roll steering required manual control by an operator to set and adjust the steering (tilt) value for each work roll during manufacturing. This control is time consuming, can be inaccurate due to being susceptible to operator error, and does not take into account (and therefore can be inaccurate) the actual rolling mill conditions. Appropriate control cannot be performed in real time.

The embodiments of the invention covered by this patent are defined by the claims below, and not by this Summary. This Summary is a high level overview of various embodiments of the invention and introduces some of the concepts that are further described in the Detailed Description section below. This Summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used alone to determine the scope of the claimed subject matter. The subject matter should be understood by reference to the entire specification of this patent, any or all of the drawings, and appropriate portions of the claims.

According to certain embodiments, a method of controlling roll steering during rolling of a metal substrate includes generating a model of a workstand of a rolling mill based on configuration data. Generating the model may include determining adjustments for the workstand. The method also includes receiving from the sensor a measured parameter for a metal substrate at an upstream location of the workstand, and determining an expected output parameter of the workstand by modifying the measured parameter with an adjustment value. obtain. In various embodiments, the method includes: comparing an expected output parameter to a target output parameter of the workstand; and determining a steering control for the workstand such that the expected output parameter is within a predetermined tolerance of the target output parameter. including actuating the actuator. The steering control actuator is adapted to control tilting of the at least one work roll of the work stand relative to the pass line of the metal substrate.

According to various embodiments, a rolling mill includes a steering control system that includes a steering control actuator, a sensor, and a controller. A steering control actuator controls the tilt of a work roll on a workstand of the rolling mill, and a sensor measures parameters of a metal substrate upstream of the workstand. The controller is operably connected to the steering control actuators and sensors and includes a processor and memory coupled to the processor. The memory determines expected output parameters by generating a model of the workstand, determining adjustment values for the workstand, receiving measured parameters from the sensor, and adjusting the measured parameters with the adjustment values. Contains instructions executable by a processor for and. The memory is also configured by the processor to compare the expected output parameter to the target output parameter and to actuate the steering control actuator such that the expected output parameter is within a predetermined tolerance of the target parameter. May contain executable instructions.

According to certain embodiments, a steering control system for a rolling mill includes at least one processor and memory coupled to the processor. The memory generates a model of the workstand, determines adjustment values for the workstand, receives measurement parameters for the metal substrate from a sensor upstream of the workstand, and adjusts the measurement parameters by the adjustment values. including a plurality of instructions executable by a processor for determining expected output parameters; The memory is also for: comparing the expected output parameter to the target output parameter; and generating a control response based on the expected output parameter being outside a predetermined tolerance of the target parameter. may include instructions executable by a processor.

The various embodiments described herein may include additional systems, methods, features, and advantages that may not necessarily be explicitly disclosed herein, but will be apparent to one of ordinary skill in the art upon review of the following detailed description and the accompanying drawings. All such systems, methods, features, and advantages are intended to be included within this disclosure and protected by the accompanying claims.

The specification refers to the accompanying figures below. In the accompanying figures, the use of like reference numerals in different figures is intended to illustrate similar or similar elements.

1 shows a rolling mill with a steering control system according to an embodiment. 1 shows a rolling mill equipped with a steering control system according to an embodiment; 1 is an exemplary method for controlling roll steering with a steering control system according to an embodiment.

Systems and methods are described herein for controlling roll steering of one or more work rolls of a workstand of a rolling mill during rolling. The systems and methods described herein can be used with any metal, but may be particularly useful with aluminum or aluminum alloys. In certain embodiments, the systems and methods described herein may automatically control roll steering during rolling. In various embodiments, a model of the workstand is generated based on the configuration data, and the model includes adjustments for the workstand. In embodiments where the rolling mill includes multiple workstands, a model for each workstand may be generated based on configuration data for each workstand, each model including adjustments specific to a particular workstand. In various embodiments, the adjustment value is a correction value that is indicative of the actual efficiency of the workstand or the deviation of the workstand's actual performance from the expected performance.

In certain embodiments, the setup data may include data measured from previous rolling operations, but not necessarily in other embodiments. In various embodiments, configuration data may include parameters measured by sensors, input parameters, or various combinations thereof. As some non-limiting examples, the measured parameters include, but are not limited to, tension meters, gauge meters, flat rolls, optical sensors, cameras, temperature sensors, combinations thereof, or other sensors as desired. It can be measured with one or more sensors. Parameters measured may include, but are not limited to, tension in the metal substrate, chemistry and/or composition of the metal substrate, temperature of the metal substrate, and the like. The input parameter may be any other desired parameter that is not necessarily measured by a sensor. As some non-limiting examples, input parameters may include, but are not limited to, the width of the metal substrate or the thickness of the metal substrate. The above parameters are provided for reference only and the model and/or adjustment values for each workstand may be modified as desired using various setup data including two or more measured parameters. should not be considered limiting as it can be generated.

During rolling, sensors may measure parameters of the metal substrate at predetermined positions relative to the workstand. The controller may determine expected output parameters by using the measured parameters as inputs to the model and modifying the measured parameters with adjustment values. The expected output parameter may be compared to a target output parameter of the work stand, and a steering control actuator for the work roll stand is actuated such that the expected output parameter is adjusted to within a predetermined tolerance of the target output parameter. Good too. In certain aspects, by modifying the measured parameters with adjustments based on actual rolling conditions, the controller may more accurately predict output results from the rolling mill. Furthermore, comparing the expected output parameters (i.e., the measured parameters modified by the adjustment values) to the target output parameters may enable the system to obtain the target output parameters faster and with improved accuracy. .

FIG. 1 shows an embodiment of a rolling mill 100 for a metal substrate 102. As shown in FIG. In the embodiment of FIG. 1, rolling mill 100 includes multiple workstands 104A-104C, but in other embodiments, rolling mill 100 includes a single workstand, two workstands, or three workstands, as desired. It may contain any number of workstands, including more than one workstand. Each workstand 104A-104C includes a pair of work rolls 106. Each work roll 106 may be supported by one or more intermediate rolls 108. Bearings or actuators (not shown) may be provided along intermediate roll 108. The bearings can apply a bearing load to the intermediate roll 108, which allows the work roll 106 to move between the work rolls 106 as the metal substrate 102 moves between the work rolls 106 in the processing direction 109 along the pass line. A load is transferred to work roll 106 to apply work roll pressure to substrate 102 .

In various embodiments, each workstand 104A-104C optionally extends relative to the pass line of the metal substrate 102 and across the width of the metal substrate (i.e., out of the page of FIG. 1). Includes steering control actuators 110A-110C that may be used to control the tilt or tilt of work roll 106. In other words, in FIG. 1, the steering control actuators 110A-110C control the tilt or tilt of the work roll 106 upward or downward. Steering control actuators 110A-110C include, but are not limited to, bearings, hydraulic cylinders, backup rolls, combinations thereof, or other suitable devices or mechanisms for adjusting the tilt or inclination of work roll 106. Any suitable device or mechanism may be used, including but not limited to. In certain embodiments, each work roll 106 of a particular workstand (eg, upper work roll 106 and lower work roll 106 of workstand 104A) may have an associated or dedicated steering control actuator.

In certain embodiments, rolling mill 100 includes a steering control system 112. In the embodiment of FIG. 1, steering control system 112 includes a plurality of controllers 114A-114C and a plurality of sensors 116A-116C; however, the number of controllers 114 and/or sensors 116 shown in FIG. should not be considered as something that does. In certain embodiments, steering control system 112 may include only one controller and/or one sensor. In certain embodiments, each controller 114A-114C and sensor 116A-116C is associated with a particular workstand 104A-104C, but not necessarily in other examples. As a non-limiting example, each workstand 104A-104C may have an associated sensor 116A-116C, but the steering control system 112 includes a single controller. Additionally, although a single sensor 116A-116C is shown associated with each workstand 104A-104C in FIG. 1, in other embodiments, during rolling of the metal substrate 102, as described below, Multiple sensors may be associated with each workstand 104A-104C so that multiple parameters may be measured.

Each controller 114A-114C includes a processor and memory and is operatively connected to a corresponding sensor 116A-116C and a corresponding steering control actuator 110A-110C. The memory is coupled to the processor and includes instructions executable by the processor to perform various functions described in detail below. The sensors 116A-116C can be various devices or mechanisms suitable for measuring at least one parameter of the metal substrate 102 during rolling. As some non-limiting examples, each of the sensors 116A-116C can be a tension meter that measures the tension of the metal substrate 102, a temperature sensor that measures the temperature of the metal substrate 102, a gauge or thickness gauge that measures the thickness of the metal substrate 102, a position sensor that measures the position of the metal substrate 102 relative to the centerline of one of the workstands (e.g., the midpoint of the workstand widthwise, which is transverse to the processing direction 109), a flatness sensor that measures the flatness of the metal substrate 102 widthwise of the metal substrate 102, an optical sensor, a camera, a combination of these, or other suitable sensors as desired. In certain embodiments, the sensors 116 may be located at inter-stand positions between adjacent workstands, but not necessarily in other embodiments. In the example of FIG. 1, the sensors 116B-116C are located at inter-stand positions, and the sensor 116A is located upstream of the workstand 104A. The sensors 116A-116C do not all need to be the same type of sensor and/or measure the same parameters, and in certain embodiments, one sensor (e.g., sensor 116A) measures a first parameter (e.g., tension) and another sensor (e.g., sensor 116B) measures a second parameter (e.g., thickness). In the embodiment of FIG. 1, the sensors 116A-116C are tension meters that detect tension in the metal substrate 102.

Optionally, the steering control system 112 may include an exit sensor 118 after the last work stand (e.g., work stand 104C). The exit sensor 118 may be a variety of devices or mechanisms that may be similar to the devices used as sensors 116A-116C or different from the devices used as sensors 116A-116C. In one non-limiting embodiment, the exit sensor 118 is a flatness sensor that measures the flatness profile of the metal substrate 102 across the width of the metal substrate 102. In certain embodiments, the exit sensor 118 may be operably connected to one or more of the controllers 114A-114C or to another controller that is operably connected to other processing equipment (e.g., a controller for a sprayer of a coolant distribution system).

In some embodiments, as shown in FIG. 1, steering control system 112 may be a feedforward control system, i.e., parameter data collected by a particular sensor is May be used to control downstream workstands. For example, in FIG. 1, sensor 116A is upstream of workstand 104A, and controller 114A uses data from sensor 116A to control workstand 104A. In other embodiments, as shown in FIG. May be used to control. For example, in FIG. 2, sensor 116A is downstream of workstand 104A, and controller 114A uses data from sensor 116A to control workstand 104A. In further embodiments, the steering control system 112 may be both a feedforward control system and a feedback control system, where the parametric data collected by a particular sensor is It may be used to control a workstand downstream of the sensor.

Referring to FIG. 3, an exemplary method 300 for controlling a work roll of a rolling mill with a steering control system provided herein will be described in detail. In certain aspects, method 300 includes one of one or more controllers 114A-114C of steering control system 112 as instructions that may be executable by one or more processors of one or more controllers 114A-114C. It may be stored in the above memory.

At block 302, method 300 includes generating a model of each workstand of the rolling mill. For example, in the embodiment of FIG. 1, block 302 includes generating a model of each workstand 104A-104C. In various embodiments, generating a model for each workstand of a rolling mill includes generating a model based on configuration data, the configuration data including one or more measured parameters, one or more inputs. It may include, but is not limited to, parameters, combinations thereof, and/or other data as desired. In one non-limiting example, configuration data includes both measurement parameters and input parameters.

In various embodiments where the configuration data includes one or more measured parameters, the measured parameters include one or more sensors that measure parameters of the metal substrate during the current rolling operation or during previous rolling operations. It can be obtained using As some non-limiting examples, the measured parameters include, but are not limited to, tension meters, gauge meters, flat rolls, optical sensors, cameras, temperature sensors, combinations thereof, or other sensors as desired. It can be measured with one or more sensors. The measured parameter(s) may include tension in the metal substrate, chemistry and/or composition of the metal substrate, chemistry or composition of the metal substrate, temperature of the metal substrate, combinations thereof, or optionally Other parameters may be included, including but not limited to. As one non-limiting example, the setup data used to generate the workstand model may include: the tension in the metal strip measured by a tensiometer during a previous rolling operation; The thickness of the metal substrate as measured by a meter and the temperature of the metal substrate as measured by a temperature sensor during a previous rolling operation may be included.

In various embodiments where the configuration data includes one or more input parameters, the input parameters may optionally be other parameters that are not necessarily measured by sensors. As some non-limiting examples, input parameters may include, but are not limited to, the width of the metal substrate, the chemistry or composition of the metal substrate, and/or the thickness of the metal substrate. .

Based on configuration data, a model is generated for each workstand. Generating the model includes generating adjustments for the particular workstand based on the configuration data. In various embodiments, the adjustment value is a correction value that indicates the actual efficiency of the workstand or the deviation of the workstand's actual performance from the expected performance.

At block 304, method 300 includes receiving measured parameters about the metal substrate from one or more sensors during rolling. In certain embodiments, block 304 includes receiving measured parameters from an immediately upstream sensor and/or an immediately downstream sensor. For example, in the embodiment of FIG. 1, block 304 includes receiving measured parameters from each sensor 116A-116C upstream of a particular workstand 104A-104C, whereas in the embodiment of FIG. 304 includes receiving measured parameters from each sensor 116A-116B downstream of a particular workstand 104A-104B. As mentioned above, the sensors that measure specific parameters during rolling may optionally be various sensors, such as tensiometers, temperature sensors, gauges or thickness gauges, position sensors, flatness sensors, optical sensors, including, but not limited to, combinations thereof, or other suitable sensors as desired. In certain embodiments, block 304 includes receiving a plurality of measured parameters from a plurality of sensors for a particular workstand of a rolling mill.

At block 306, method 300 includes determining expected output parameters and comparing the expected output parameters to target output parameters. In certain embodiments, determining the expected output parameters includes modifying the measured parameters by the adjustment values determined at block 302. In certain embodiments, modifying the measured parameters by adjustment values may more accurately predict the output of a particular workstand because the adjustment values are based on the actual efficiency of the workstand (e.g., based on configuration data).

At block 308, the method 300 includes generating a control response based on a comparison of the expected output parameters to the target output parameters. In some embodiments, block 308 includes actuating a steering control actuator for the workstand such that the expected output parameters determined at block 306 are within a predetermined tolerance of the target output parameters. In various embodiments, generating a control response and actuating a steering control actuator may include sending a control to a steering control actuator to control the tilt or inclination of one or more work rolls of a particular workstand. In one non-limiting embodiment, block 308 may include actuating a backup roll, a hydraulic cylinder, a bearing, a combination thereof, or other suitable steering control actuator as desired.

Optionally, if the particular workstand is the last workstand of the rolling mill, the method 300 includes receiving the measured parameter from an exit sensor 118 downstream of the last workstand, the measured parameter from the exit sensor 118; and operating the steering control actuator such that the expected exit parameter is within a predetermined tolerance of the target exit parameter. In one non-limiting embodiment, the exit sensor 118 may be a flatness sensor that measures a widthwise flatness profile of the metal substrate, where the measured flatness profile is such that the expected flatness profile is equal to the target flatness. It may be used to actuate the steering control actuator to be within a predetermined tolerance of the profile.

As one non-limiting example of controlling roll steering using method 300, block 302 may include generating a model of a workstand, such as workstand 104A, and block 304 may include generating a model of a workstand, such as workstand 104A, from sensor 116A. including receiving a measured thickness of substrate 102 (eg, in this example, sensor 116A is a gauge or thickness sensor). In this example, block 306 may include comparing the expected output thickness from workstand 104A to the target output thickness from workstand 104A. Block 308 actuates steering control actuator 110A to control the tilt or tilt of work roll(s) 106 of workstand 104A such that the expected output thickness is within a predetermined tolerance of the target output thickness. It may also include.

As another non-limiting example of controlling roll steering using method 300, block 302 may include generating a model of a workstand, such as workstand 104A, and block 304 may include generating a model of a workstand, such as workstand 104A, from sensor 116A. including receiving a measured flatness profile across the width of the metal substrate 102 (eg, in this example, sensor 116A is a flatness sensor). In this example, block 306 may include comparing the expected output flatness profile from workstand 104A to the target output flatness profile from workstand 104A. Block 308 actuates the steering control actuator 110A to tilt or tilt the work roll(s) 106 of the workstand 104A such that the expected output flatness profile is within a predetermined tolerance of the target output flatness profile. It may also include controlling.

As an additional non-limiting example of controlling roll steering using method 300, block 302 may include generating a model of a workstand, such as workstand 104A, and block 304 may include generating a model of a workstand, such as workstand 104A. (e.g., whether the metal substrate 102 is substantially aligned with the centerline of the workstand 104A, offset to the left, offset to the right, etc.) Including receiving. In this example, sensor 116A is a position sensor. Block 306 may include comparing the expected output position of the metal substrate 102 upon exiting the workstand 104A to a target output position. Block 308 operates steering control actuator 110A to control the tilt or tilt of work roll(s) 106 of workstand 104A such that the expected output position is within a predetermined tolerance of the target output position. May include.

As another non-limiting example of controlling roll steering using method 300, block 302 may include generating a model of a workstand, such as workstand 104A, and block 304 may include generating a model of a workstand, such as workstand 104A, from sensor 116A. including receiving a measured tension in the metal substrate 102 (eg, in this example, sensor 116A is a tensiometer). In this example, block 306 may include comparing the expected output tension from workstand 104A to the target output tension from workstand 104A. Block 308 operates steering control actuator 110A to control the tilt or tilt of work roll(s) 106 of workstand 104A such that the expected output tension is within a predetermined tolerance of the target output tension. May include.

The above examples are provided for illustrative purposes and should not be considered as limiting the disclosure. Additionally, as previously discussed, in certain embodiments, more than one parameter may be used to generate a model of the workstand and/or subsequent control using steering control system 112.

Provided below is a collection of example embodiments, at least some expressly listed as "exemplary", to provide further explanation of various example embodiments in accordance with the concepts described herein. be done. These illustrative examples are not intended to be mutually exclusive, exhaustive, or limiting, and this disclosure is not limited to these illustrative examples, but rather the issued claims and their equivalents.

Example 1. 1. A method for controlling roll steering during rolling of a metal substrate, the method comprising: generating a model of a workstand of a rolling mill based on configuration data, wherein generating the model comprises: receiving from a sensor a measured parameter for the metal substrate at a location upstream of the workstand; and modifying the measured parameter by the adjusted value. determining an expected output parameter for the workstand; comparing the expected output parameter to a target output parameter for the workstand; and determining that the expected output parameter is within a predetermined tolerance range of the target output parameter. actuating a steering control actuator for the workstand, the steering control actuator controlling a tilt of at least one work roll of the workstand relative to a pass line of the metal substrate, as in and said actuating adapted to.

Example 2. The method of any preceding or subsequent example or combination of examples, wherein the measured parameter includes a measured thickness, the expected output parameter is an expected output thickness, and the target output parameter is a target output thickness. .

Example 3. The measured parameter includes a measured flatness profile across the width of the metal substrate, the expected output parameter is an expected output flatness profile, and the target output parameter is a target output flatness profile. A method as described in any example or combination of examples.

Example 4. The measured parameter includes a measured position of the metal substrate relative to a centerline of the workstand, the expected output parameter is an expected output position, and the target output parameter is a target output position, either preceding or following. A method according to any of the examples or combinations of examples.

Example 5. The workstand is a first workstand of a plurality of workstands, and the method includes generating a model for each workstand of the plurality of workstands based on configuration data of each workstand. A method as described in any preceding or subsequent example or example combination, including.

Example 6. The method of any preceding or subsequent example or example combination, wherein actuating the steering control actuator includes controlling at least one hydraulic cylinder or at least one backup roll.

Example 7. The method of any preceding or subsequent example or combination of examples, wherein the measured parameter includes tension in the metal substrate, the expected output parameter is expected tension, and the target output parameter is target tension. .

Example 8. Generating the model of the workstand includes generating the model prior to rolling of the metal substrate, and the configuration data includes data from previous rolling operations, either preceding or subsequent. A method according to any of the examples or combinations of examples.

Example 9. the expected thickness of the workstand by receiving from a sensor a measured thickness for the metal substrate at a position after the last workstand of the rolling mill and modifying the measured thickness by the adjustment value; determining the expected thickness to a target thickness for the workstand; and determining the steering for the workstand such that the expected thickness is within a predetermined tolerance of the target thickness. activating a control actuator; and any preceding or subsequent example or combination of examples.

Example 10. The workstand is a first workstand, and the rolling mill further includes a second workstand upstream of the first workstand, and the sensor is connected to the first workstand and the second workstand. a second workstand, the method further comprising: generating a model of the second workstand based on configuration data; generating the model of the second workstand; determining an adjustment value for the second workstand, and after rolling the metal substrate, the measured parameter of the metal substrate from the sensor during rolling, updating the model of the second workstand by updating the adjustment value based on a target output parameter of the second workstand being outside a predetermined tolerance; A method as described in any preceding or subsequent examples or combinations of examples.

Example 11. A rolling mill comprising a steering control system, the steering control system comprising: a steering control actuator adapted to control the inclination of a work roll on a workstand of the rolling mill; and a metal base upstream of the workstand. a sensor configured to measure a material parameter; and a controller operably connected to the steering control actuator and the sensor, the controller comprising a processor and a memory coupled to the processor. , the memory generates a model of the workstand, determines adjustment values for the workstand, receives the measured parameters from the sensor, and adjusts the measured parameters by the adjustment values. , determining an expected output parameter, comparing the expected output parameter to a target output parameter, and controlling the steering control actuator such that the expected output parameter is within a predetermined tolerance range of the target parameter. and the controller including instructions executable by the processor for operating the rolling mill.

Example 12. further comprising the work stand and the work roll, either a preceding or a trailing work roll comprising an upper work roll or a lower work roll adapted to contact the metal substrate during rolling. The rolling mill according to the examples or example combinations.

Example 13. The workstand is a first workstand among a plurality of workstands, and the memory is configured to generate a model of each workstand of the plurality of workstands based on configuration data of each workstand. A rolling mill as described in any preceding or subsequent examples or example combinations comprising instructions executable by said processor.

Example 14. The rolling according to any preceding or subsequent example or combination of examples, wherein the measured parameter includes a measured thickness, the expected output parameter is an expected output thickness, and the target output parameter is a target output thickness. Machine.

Example 15. The measured parameter includes a measured flatness profile across the width of the metal substrate, the expected output parameter is an expected output flatness profile, and the target output parameter is a target output flatness profile. A rolling mill as described in any exemplary or exemplary combination.

Example 16. The measured parameter includes a measured position of the metal substrate relative to a centerline of the workstand, the expected output parameter is an expected output position, and the target output parameter is a target output position, either preceding or following. The rolling mill according to the examples or example combinations.

Example 17. A rolling mill as described in any preceding or subsequent example or example combination, wherein the steering control actuator comprises controlling at least one hydraulic cylinder or at least one backup roll.

Example 18. A steering control system for a rolling mill, comprising at least one processor and a memory coupled to the processor, the memory generating a model of a workstand and determining adjustments for the workstand. receiving a measured parameter for a metal substrate from a sensor upstream of the workstand; determining an expected output parameter by adjusting the measured parameter according to the adjustment value; executable by the processor for comparing to a target output parameter and generating a control response based on the expected output parameter being outside a predetermined tolerance of the target parameter; The steering control system comprises: the memory including a plurality of instructions.

Example 19. The processor is configured to generate the control response by actuating a steering control actuator of the workstand to control the inclination of a work roll of the workstand of the rolling mill. A steering control system as described in any example or example combination.

Example 20. The measured parameter may include at least one of a thickness of the metal substrate, a flatness of the metal substrate, or a position of the metal substrate with respect to a centerline of the rolling mill. A steering control system according to an example or an example combination of.

Although the subject matter of the embodiments is described herein with specificity to satisfy statutory requirements, this description is not necessarily intended to limit the scope of the claims. The claimed subject matter may be embodied in other ways, including different elements or steps, and used in conjunction with other existing or future technologies. This description should not be construed as implying any particular order or arrangement of or among the various steps or elements, except when that order of individual steps or arrangement of elements is explicitly described. do not have. References to directions such as "top", "bottom", "top", "bottom", "left", "right", "front", and "rear", among others, refer to components and directions. Reference is intended to the orientation shown and described in the figure (or figures). References to embodiments having element A and/or element B extend to embodiments having element A alone, element B alone, or embodiments in which elements A and B are combined.

The above-described aspects are merely possible examples of implementations and are set forth solely for a clear understanding of the principles of the present disclosure. Many variations and modifications may be made to the embodiment(s) described above without materially departing from the spirit and principles of the disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure, and all possible claims to individual aspects or combinations of elements or steps are supported by this disclosure. It is intended that Additionally, while certain terms are used herein and in the claims that follow, they are used in a generic and descriptive sense only and are intended to be used in the described embodiments and claims that follow. It is not intended to limit the scope.

Claims (20)

1. A method for controlling roll steering during rolling of a metal substrate, comprising:
generating a model of a workstand of the rolling mill based on configuration data, said generating including determining adjustment values for the workstand;
receiving a measured parameter about the metal substrate from a sensor located upstream of the workstand;
determining expected output parameters of the workstand by modifying the measured parameters with the adjustment values;
comparing the predicted output parameters to target output parameters of the workstand;
actuating a steering control actuator for the workstand to control an inclination of at least one work roll of the workstand relative to a pass line of the metal substrate such that the predicted output parameter is within a predetermined tolerance of the target output parameter;
The method comprising: 2. The method of claim 1, wherein the measured parameter includes a measured thickness, the expected output parameter is an expected output thickness, and the target output parameter is a target output thickness. 2. The method of claim 1, wherein the measured parameter includes a measured flatness profile in the width direction of the metal substrate, the expected output parameter is an expected output flatness profile, and the target output parameter is a target output flatness profile. Method described. 2. The method of claim 1, wherein the measured parameter includes a measured position of the metal substrate relative to a centerline of the workstand, the expected output parameter is an expected output position, and the target output parameter is a target output position. Method. 2. The method of claim 1, wherein the measured parameter includes tension in the metal substrate, the expected output parameter is expected tension, and the target output parameter is target tension. The workstand is a first workstand of a plurality of workstands, and the method includes generating a model for each workstand of the plurality of workstands based on configuration data of each workstand. 2. The method of claim 1, comprising: 2. The method of claim 1, wherein actuating the steering control actuator includes controlling at least one hydraulic cylinder or at least one backup roll. 2. Generating the model of the workstand includes generating the model prior to rolling of the metal substrate, and the configuration data includes data from a previous rolling operation. the method of. receiving from a sensor a measured thickness for the metal substrate at a position after a last workstand of the rolling mill;
determining an expected thickness of the workstand by modifying the measured thickness by the adjustment value;
comparing the expected thickness to a target thickness of the workstand;
activating the steering control actuator for the workstand such that the expected thickness is within a predetermined tolerance of the target thickness;
2. The method of claim 1, further comprising: The workstand is a first workstand, and the rolling mill further includes a second workstand upstream of the first workstand, and the sensor is connected to the first workstand and the second workstand. 2, the method further comprises:
generating a model of the second workstand based on configuration data, the generating the model of the second workstand determining adjustment values for the second workstand; said generating,
After rolling the metal substrate, the adjustment value is determined based on the fact that the measured parameter of the metal substrate by the sensor during rolling is outside a predetermined tolerance range of the target output parameter of the second workstand. updating the model of the second workstand by updating;
2. The method of claim 1, comprising: A rolling mill equipped with a steering control system, the steering control system comprising:
a steering control actuator adapted to control a tilt of a work roll of a workstand of the rolling mill;
a sensor configured to measure a parameter of a metal substrate upstream of the workstand;
a controller operably connected to the steering control actuator and the sensor, the controller comprising a processor and a memory coupled to the processor, the memory comprising:
generating a model of the workstand and determining adjustment values for the workstand;
receiving the measured parameter from the sensor;
determining an expected output parameter by adjusting the measured parameter by the adjusted value;
comparing the expected output parameters to target output parameters;
activating the steering control actuator such that the expected output parameter is within a predetermined tolerance range of the target parameter;
the controller including instructions executable by the processor for;
The rolling mill, comprising: 12. The method of claim 11, further comprising the workstand and the work roll, the work roll comprising an upper work roll and/or a lower work roll adapted to contact the metal substrate during rolling. The mentioned rolling mill. The workstand is a first workstand among a plurality of workstands, and the memory is configured to generate a model of each workstand of the plurality of workstands based on configuration data of each workstand. 13. The rolling mill of claim 12, comprising instructions executable by the processor. 12. The rolling mill of claim 11, wherein the measured parameter includes measured thickness, the expected output parameter is expected output thickness, and the target output parameter is target output thickness. 12. The measured parameter includes a measured flatness profile in the width direction of the metal substrate, the expected output parameter is an expected output flatness profile, and the target output parameter is a target output flatness profile. The mentioned rolling mill. 12. The measured parameter includes a measured position of the metal substrate relative to a centerline of the workstand, the expected output parameter is an expected output position, and the target output parameter is a target output position. rolling machine. 12. The rolling mill of claim 11, wherein the steering control actuator comprises at least one hydraulic cylinder or at least one backup roll. A steering control system for a rolling mill,
at least one processor;
a memory coupled to the processor, the memory comprising:
generating a model of a workstand and determining adjustment values for the workstand;
receiving measured parameters about a metal substrate from a sensor upstream of the workstand;
determining an expected output parameter by adjusting the measured parameter by the adjusted value;
comparing the expected output parameters to target output parameters;
generating a control response based on the expected output parameter being outside a predetermined tolerance range of the target parameter;
the memory including a plurality of instructions executable by the processor for;
The steering control system, comprising: The steering control system of claim 18, wherein the processor is configured to generate the control response by actuating a steering control actuator of the workstand to control tilt of a work roll of the rolling mill workstand. 19. The measured parameter includes at least one of a thickness of the metal substrate, a flatness of the metal substrate, or a position of the metal substrate with respect to a centerline of the rolling mill. Steering control system.

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