Method and device for obtaining tension of rolled strip and rolling process control system

Abstract

This application relates to the field of industrial control technology, in particular to a method and device for obtaining the tension of a rolled strip and a rolling process control system, including: in response to determining that it is detected that the rolled strip passes through a shape roller installed on the transmission path of the rolled strip, dividing the axial direction of the shape roller into multiple intervals, and respectively obtaining the output electrical signals corresponding to each interval in each interval; performing signal processing on the output electrical signals to obtain the radial force corresponding to each interval in each interval; determining whether the rolled strip needs to be rectified according to the radial force corresponding to each interval in each interval; in response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller. The embodiments of the present disclosure achieve obtaining accurate tension values and then inputting them into closed-loop tension control.

Description

Technical Field

[0001] This application relates to the field of industrial control technology, and particularly to a method and device for obtaining the tension of a rolled strip and a rolling process control system. Background Art

[0002] Aluminum foil rolling mills are commonly used mechanical equipment in the aluminum processing industry. Currently, the tension of aluminum foil rolling mills is usually controlled in an open-loop manner. This is because the aluminum foil material is quite thin, and it is difficult for ordinary tension meters to achieve the required measurement accuracy. Moreover, high-precision tension meters are costly. Therefore, many ordinary aluminum foil rolling mills do not measure the tension and cannot perform closed-loop control.

[0003] The principle of open-loop tension control is to calculate the output torque of the motor through the coil diameter of the incoming coil on the coiler and the preset tension. The main disadvantages of the open-loop method are as follows: the tension stability is poor after being disturbed, the actual tension is inaccurate, and the tension value designed in the process cannot be fully executed; the error of the tension has a great impact on the thickness. Summary of the Invention

[0004] The main purpose of this application is to provide a method and device for obtaining the tension of a rolled strip and a rolling process control system; it is used to solve the technical problem of how to obtain an accurate tension value and then implement closed-loop tension control.

[0005] To achieve the above purpose, the present invention provides a method for obtaining the tension of a rolled strip. The method is applied to a rolling process control system and includes: in response to determining that it is detected that the rolled strip passes through a shape roller installed on the transmission path of the rolled strip, dividing the axial direction of the shape roller into multiple intervals, and respectively obtaining the output electrical signals corresponding to each interval in each interval;

[0006] Performing signal processing on the output electrical signals to obtain the radial force corresponding to each interval in each interval;

[0007] Determining whether the rolled strip needs to be rectified according to the radial force corresponding to each interval in each interval;

[0008] In response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller.

[0009] Optionally, before the step of in response to determining that it is detected that the rolled strip passes through a shape roller installed on the transmission path of the rolled strip, dividing the axial direction of the shape roller into multiple intervals, and respectively obtaining the output electrical signals corresponding to each interval in each interval, the method further includes:

[0010] Applying a force with a target force value to the shape roller, and obtaining a detection electrical signal through a sensor on the shape roller;

[0011] Perform signal processing on the detected electrical signal to obtain the pressure value received by the shape roll;

[0012] Determine whether the pressure value is the same as the target force value;

[0013] In response to determining that the pressure value is the same as the target force value, guide the rolled strip onto the shape roll through the guiding device on the rolling process control system;

[0014] Adjust the wrap angle between the rolled strip and the shape roll according to the pre-acquired measurement requirements and the strip characteristics of the rolled strip.

[0015] Optionally, before calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll in response to determining that no rectification operation is required, the method further includes:

[0016] In response to determining that no rectification operation is required, determine the initial tension according to the attribute information of the rolled strip;

[0017] Apply the initial tension to the rolled strip through the controller in the rolling process control system according to the initial tension;

[0018] In response to the controller in the rolling process control system applying the initial tension to the rolled strip, obtain the radial force corresponding to each interval in each interval;

[0019] Calculate the strip interval tension of each interval according to the radial force of each interval and the wrap angle of the rolled strip on the shape roll;

[0020] Determine whether the strip interval tension of each interval in each interval is the same;

[0021] In response to determining that the strip interval tension of each interval is the same, start the rolling process control system.

[0022] Optionally, the calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll in response to determining that no rectification operation is required includes:

[0023] Calculate the tension of the rolled strip through the following formula according to the radial force corresponding to each interval in the shape roll and the friction coefficient between the shape roll and the rolled strip by using the principle of force decomposition;

[0024] ,

[0025] where, represents the tension of the rolled strip; is expressed as the friction coefficient between the rolled strip and the shape roll; is expressed as the wrap angle between the rolled strip and the shape roll; is expressed as the radial force corresponding to each interval in the shape roll; is expressed as the natural constant.

[0026] Optionally, the method further includes:

[0027] In response to determining that a rectification operation is required, rectification information is generated according to the radial force corresponding to each interval;

[0028] The controller adjusts the rolling process control system according to the rectification information;

[0029] In response to determining that the adjustment is completed, the output electrical signals corresponding to each interval are respectively acquired again;

[0030] The output electrical signals are processed to obtain the radial force corresponding to each interval;

[0031] According to the radial force corresponding to each interval and the wrap angle of the rolled strip on the shape roll, the tension of the rolled strip corresponding to each interval is calculated;

[0032] The tension of the rolled strip corresponding to each interval is processed to obtain the tension of the rolled strip.

[0033] Optionally, the calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll in response to determining that no rectification operation is required includes:

[0034] According to the radial force of each interval, the pressure value received by the shape roll is obtained;

[0035] According to the pressure value received by the shape roll and the friction coefficient, the tension of the rolled strip is obtained through the following formula;

[0036] ,

[0037] wherein, is expressed as the tension of the rolled strip; is expressed as the friction coefficient between the rolled strip and the shape roll; is expressed as the wrap angle between the rolled strip and the shape roll; is expressed as the pressure value received by the shape roll; is expressed as the natural constant.

[0038] In addition, to achieve the above object, the present invention further provides a rolling process control system, including: a shape roll, a guiding device and a controller;

[0039] The shape roller is installed on the transmission path of the rolled strip, and the shape roller is perpendicular to the running direction of the strip; the shape roller includes a roller body, a sensor and a signal processing device; wherein, the roller body is the main structure of the shape roller, and its surface is in direct contact with the rolled strip; the sensor is installed inside or on the surface of the roller body, and is used to detect the pressure distribution generated when the rolled strip contacts the roller body. The sensor converts the pressure signal into an electrical signal; the signal processing device is used to perform signal processing on the electrical signal collected by the sensor to obtain data information for reflecting the shape of the rolled strip; and is communicatively connected to the controller;

[0040] The guiding device is used to guide the rolled strip onto the shape roller, so that the strip is in full contact with the surface of the shape roller;

[0041] The controller is used to determine whether the tension of the rolled strip is within a preset range according to the electrical signal generated by the sensor; in response to determining that the tension of the rolled strip is not within the preset range, generate a warning message; and control the operation of the rolling process control system according to the warning message.

[0042] In addition, to achieve the above object, the present invention also provides a device for obtaining the tension of a rolled strip. The device is applied to a rolling process control system and includes:

[0043] An electrical signal acquisition module, which is used to, in response to determining that it is detected that the rolled strip passes through a shape roller installed on the transmission path of the rolled strip, divide the axial direction of the shape roller into multiple intervals, and respectively acquire the output electrical signals corresponding to each interval in each interval;

[0044] An electrical signal processing module, which is used to perform signal processing on the output electrical signals to obtain the radial force corresponding to each interval in each interval;

[0045] A deviation correction determination module, which is used to determine whether the rolled strip needs to be subjected to a deviation correction operation according to the radial force corresponding to each interval in each interval;

[0046] A tension calculation module, which is used to, in response to determining that no deviation correction operation is required, calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller.

[0047] Optionally, before the electrical signal acquisition module, the device further includes:

[0048] A detection electrical signal acquisition module, which is used to apply a force with a target force value to the shape roller and acquire a detection electrical signal through the sensor on the shape roller;

[0049] A pressure value determination module for performing signal processing on the detected electrical signal to obtain the pressure value applied to the shape roll;

[0050] A pressure value equality determination module for determining whether the pressure value is the same as the target force value;

[0051] A guiding module for, in response to determining that the pressure value is the same as the target force value, guiding the rolled strip to the shape roll through a guiding device on the rolling process control system;

[0052] An included angle adjustment module for adjusting the included angle between the rolled strip and the shape roll according to the pre-acquired measurement requirements and the strip characteristics of the rolled strip.

[0053] Optionally, before the tension calculation module, the device further includes:

[0054] An initial tension determination module for, in response to determining that no rectification operation is required, determining the initial tension according to the attribute information of the rolled strip;

[0055] An initial tension application module for applying the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension;

[0056] A radial force acquisition module for, in response to the controller in the rolling process control system applying the initial tension to the rolled strip, acquiring the radial force corresponding to each interval in each interval;

[0057] An interval tension calculation module for calculating the strip interval tension of each interval according to the radial force of each interval and the included angle of the rolled strip on the shape roll;

[0058] An interval tension equality determination module for determining whether the strip interval tension of each interval in each interval is the same;

[0059] A system startup module for, in response to determining that the strip interval tension of each interval is the same, starting the rolling process control system.

[0060] Optionally, the tension calculation module includes:

[0061] A first tension calculation sub-module for calculating the tension of the rolled strip through the following formula according to the radial force corresponding to each interval in each interval of the shape roll and the friction coefficient between the shape roll and the rolled strip by using the principle of force decomposition;

[0062] ,

[0063] where Denoted as the tension of the rolled strip; Denoted as the friction coefficient between the rolled strip and the shape roll; Denoted as the wrap angle between the rolled strip and the shape roll; Denoted as the radial force corresponding to each interval in the shape roll; Denoted as the natural constant.

[0064] Optionally, the device further includes:

[0065] A deviation correction information generation module, configured to generate deviation correction information according to the radial force corresponding to each interval in response to determining that a deviation correction operation is required;

[0066] A system adjustment module, configured to adjust the rolling process control system by the controller according to the deviation correction information;

[0067] An electrical signal re-acquisition module, configured to re-acquire the output electrical signal corresponding to each interval in each interval respectively in response to determining that the adjustment is completed;

[0068] A radial force determination module, configured to perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval;

[0069] A strip tension calculation module, configured to calculate the tension of the rolled strip corresponding to each interval according to the radial force corresponding to each interval and the wrap angle of the rolled strip on the shape roll;

[0070] A data processing module, configured to perform data processing on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip.

[0071] Optionally, the tension calculation module includes:

[0072] A pressure value acquisition sub-module, configured to obtain the pressure value received by the shape roll according to the radial force of each interval;

[0073] A second tension calculation sub-module, configured to calculate the tension of the rolled strip through the following formula according to the pressure value received by the shape roll and the friction coefficient;

[0074] ,

[0075] Wherein, Denoted as the tension of the rolled strip; Denoted as the friction coefficient between the rolled strip and the shape roll; Denoted as the wrap angle between the rolled strip and the shape roll; Denoted as the pressure value received by the shape roll; Denoted as the natural constant.

[0076] In addition, to achieve the above object, the present invention further provides a device for obtaining the tension of a rolled strip, characterized in that the device for obtaining the tension of a rolled strip includes: a memory, a processor, and a program for obtaining the tension of a rolled strip stored on the memory and executable on the processor, and when the program for obtaining the tension of a rolled strip is executed by the processor, the steps of the method for obtaining the tension of a rolled strip as described in any one of the above are implemented.

[0077] In addition, to achieve the above object, the present invention further provides a computer-readable storage medium, characterized in that a program for obtaining the tension of a rolled strip is stored on the computer-readable storage medium, and when the program for obtaining the tension of a rolled strip is executed by a processor, the steps of the method for obtaining the tension of a rolled strip as described in any one of the above are implemented.

[0078] Compared with the prior art, the beneficial effects of the present invention are:

[0079] The method is applied to a rolling process control system. By responding to determining that a rolled strip is detected passing through a shape roller installed on the transmission path of the rolled strip, the axial direction of the shape roller is divided into multiple intervals, and the output electrical signals corresponding to each interval in each interval are respectively obtained; the output electrical signals are signal-processed to obtain the radial forces corresponding to each interval in each interval; according to the radial forces corresponding to each interval in each interval, it is determined whether the rolled strip needs to be corrected; in response to determining that no correction operation is required, the tension of the rolled strip is calculated according to the radial force and the wrap angle of the rolled strip on the shape roller. The embodiments of the present disclosure achieve obtaining accurate tension values and then inputting them into closed-loop tension control. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 It is a schematic diagram of an embodiment of a rolling process control system in an embodiment of the present invention;

[0081] Figure 2 It is a schematic diagram of an embodiment of a method for obtaining the tension of a rolled strip in an embodiment of the present invention;

[0082] Figure 3 It is a schematic diagram of an embodiment of a device for obtaining the tension of a rolled strip in an embodiment of the present invention;

[0083] Figure 4 It is a schematic diagram of an embodiment of a device for obtaining the tension of a rolled strip in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0084] The main purpose of this application is to provide a method for obtaining the tension of a rolled strip. Without installing a tensiometer, the actual measured value of the tension is obtained through the air bearing shape roller (hereinafter referred to as ABSM) configured in the aluminum foil rolling mill for tension closed-loop control.

[0085] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of the present invention are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data used in appropriate cases can be interchanged so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the term "comprising" or "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0086] For ease of understanding, please refer to Figure 1 , which is a schematic diagram of an embodiment of the rolling process control system in the embodiment of the present invention; the rolling process control system includes: a shape roller, a guiding device and a controller;

[0087] The shape roller is installed on the transmission path of the rolled strip, and the shape roller is perpendicular to the running direction of the strip; the shape roller includes a roller body, a sensor and a signal processing device; wherein, the roller body is the main structure of the shape roller, and its surface is in direct contact with the rolled strip; the sensor is installed inside or on the surface of the roller body and is used to detect the pressure distribution generated when the rolled strip contacts the roller body. The sensor converts the pressure signal into an electrical signal; the signal processing device is used to process the electrical signal collected by the sensor to obtain data information for reflecting the shape of the rolled strip; and is communicatively connected to the controller;

[0088] The above data information reflecting the shape of the sheet can be data describing the overall shape characteristics of the sheet, data reflecting local shape changes of the sheet, derivative data calculated based on the pressure distribution, and statistical analysis data.

[0089] During the running of the strip, the electrical signals output by the sensors in the shape roller are related to the pressure exerted by the strip on the shape roller or the strain of the shape roller, and thus reflect the magnitude of the strip tension. According to the mechanical principle, combined with the geometric parameters of the shape roller (such as radius, wrap angle, etc.) and the friction coefficient between the strip and the shape roller and other factors, the tension of the strip is calculated using the corresponding calculation formula.

[0090] The guiding device is used to guide the rolled strip onto the shape roller, so that the strip is in full contact with the surface of the shape roller;

[0091] The above guiding device can be a guiding roller; it is used to provide a strip with a fixed guiding angle. Guide the aluminum foil strip drawn from the uncoiler so that it accurately runs along the predetermined rolling path. During the rolling process, it is necessary to ensure that the strip does not deviate and always remains in the correct position in order to pass through each rolling equipment smoothly, which is crucial for ensuring the rolling quality and the normal operation of the equipment.

[0092] The controller is used to determine whether the tension of the rolled strip is within a preset range according to the electrical signal generated by the sensor; in response to determining that the tension of the rolled strip is not within the preset range, generate a warning message; and control the operation of the rolling process control system according to the warning message.

[0093] For ease of understanding, the specific process of the embodiment of the present invention will be described below. Please refer to Figure 2 , which is a schematic diagram of an embodiment of the method for obtaining the tension of a rolled strip in an embodiment of the present invention. The method is applied to a rolling process control system and includes:

[0094] Step 201, in response to determining that it is detected that the rolled strip passes through the shape roller installed on the transmission path of the rolled strip, divide the axial direction of the shape roller into multiple intervals, and respectively obtain the output electrical signal corresponding to each interval in each interval.

[0095] It can be understood that the execution subject of the present invention can be the method for obtaining the tension of the rolled strip, or a terminal or a server. Specifically, it is not limited here. The embodiment of the present invention takes the server as the execution subject as an example for illustration.

[0096] The above execution subject can determine whether the rolled strip passes through the shape roller installed on the transmission path of the rolled strip through a camera device pre-installed on the rolling process control system. As an example, in the case where the rolled strip passes through the shape roller installed on the transmission path of the rolled strip, divide the shape roller along the axial direction of the shape roller into multiple intervals, and respectively obtain the output electrical signal corresponding to each interval in each interval; multiple sensors are equipped on the shape roller; each interval can correspond to a sensor, so that we can obtain the radial force distribution of each part of the strip on the shape roller. The above shape roller can be an air bearing shape meter.

[0097] Optionally, before, in response to determining that a rolled strip is detected passing through a shape roll installed on the transmission path of the rolled strip, dividing the axial direction of the shape roll into multiple intervals and respectively obtaining the output electrical signals corresponding to each interval in each interval, the method further includes: applying a force with a target force value to the shape roll, obtaining a detected electrical signal through a sensor on the shape roll; performing signal processing on the detected electrical signal to obtain the pressure value received by the shape roll; determining whether the pressure value is the same as the target force value; in response to determining that the pressure value is the same as the target force value, guiding the rolled strip to the shape roll through a guiding device on the rolling process control system; adjusting the wrap angle between the rolled strip and the shape roll according to the pre-obtained measurement requirements and the strip characteristics of the rolled strip.

[0098] The force with the above-mentioned target force value can be a preset known standard force; as an example, applying a known standard force to the shape roll, obtaining a detected electrical signal through a sensor on the shape roll; calculating the force detected by the sensor on the shape roll through a channel for the detected electrical signal, comparing the detected force with the applied known standard force, and in the case where the detected force is the same as the applied known standard force, guiding the rolled strip to the shape roll through a guiding device, etc., to make the strip fully contact the surface of the shape roll; and adjusting according to specific measurement requirements and strip characteristics, usually selecting a more appropriate angle between 30° and 90°.

[0099] Optionally, before, in response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll, the method further includes: in response to determining that no rectification operation is required, determining an initial tension according to the attribute information of the rolled strip; applying the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension; in response to the controller in the rolling process control system applying the initial tension to the rolled strip, obtaining the radial force corresponding to each interval in each interval; calculating the strip interval tension of each interval according to the radial force of each interval and the wrap angle of the rolled strip on the shape roll; determining whether the strip interval tension of each interval in each interval is the same; in response to determining that the strip interval tension of each interval is the same, starting the rolling process control system.

[0100] The above-mentioned attribute information can be information such as the material, thickness, width of the rolled strip; the above-mentioned initial tension can be preset manually.

[0101] As an example, when it is determined that no rectification operation is required, a certain initial tension is applied to the strip to keep it in a stable running state on the shape roller, avoiding the strip from being too loose or too tight. The magnitude of the initial tension can be preliminarily estimated and adjusted according to factors such as the material, thickness, width of the strip, and rolling process requirements to ensure the smooth progress of subsequent measurements; along the axial direction of the shape roller, the shape roller is divided into multiple intervals, and radial forces are obtained for each interval; the above-mentioned radial forces can be obtained through sensors on the shape roller; according to the radial forces of each interval and the wrap angle of the rolling strip on the shape roller, the strip interval tensions of each interval are calculated; it is determined whether the strip interval tensions of each interval in the above-mentioned intervals are the same; in response to determining that the strip interval tensions of each interval are the same, the rolling process control system is started; after confirming that the strip position and tension are adjusted appropriately, the rolling equipment is started to make the strip run through the shape roller at a stable speed.

[0102] Step 202: Perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval.

[0103] The above-mentioned execution entity can perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval. The above-mentioned signal processing can be to amplify, filter, convert, etc. the electrical signal collected by the sensor.

[0104] Step 203: Determine whether the rolling strip needs to be rectified according to the radial force corresponding to each interval in each interval.

[0105] The above-mentioned execution entity can determine whether the rolling strip needs to be rectified according to the radial force corresponding to each interval in each interval; as an example, when the radial forces corresponding to each interval are the same, the rolling strip does not need to be rectified; or when the difference between the radial forces corresponding to each interval is within a preset range, the rolling strip does not need to be rectified; the above-mentioned preset range can be set manually.

[0106] Optionally, in response to determining that a rectification operation is required, rectification information is generated according to the radial force corresponding to each interval in each interval; the controller adjusts the rolling process control system according to the rectification information; in response to determining that the adjustment is completed, the output electrical signals corresponding to each interval in each interval are respectively obtained again; signal processing is performed on the output electrical signal to obtain the radial force corresponding to each interval in each interval; according to the radial force corresponding to each interval in each interval and the wrap angle of the rolling strip on the shape roller, the tension of the rolling strip corresponding to each interval is calculated; data processing is performed on the tension of the rolling strip corresponding to each interval to obtain the tension of the rolling strip.

[0107] The above rectification information may be data used to describe the adjustments required; the rolling process control system is adjusted according to the determined rectification information; after the adjustment is completed, the output electrical signals corresponding to each interval in each interval are respectively obtained again, and the output electrical signals are signal-processed to obtain the radial force corresponding to each interval in each interval; according to the radial force corresponding to each interval in each interval and the wrap angle of the rolled strip on the shape roller, the tension of the rolled strip corresponding to each interval is calculated; the tension of the rolled strip corresponding to each interval is data-processed to obtain the tension of the rolled strip. The above data processing may add the tensions of the rolled strip corresponding to each interval and use the calculation result as the tension of the rolled strip; alternatively, the average value of the tensions of the rolled strip corresponding to each interval may be taken and multiplied by the number of intervals, and the calculation result may be used as the tension of the rolled strip.

[0108] Step 204, in response to determining that no rectification operation is required, calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller.

[0109] The above execution entity may calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller when it is determined that no rectification operation is required. As an example, according to the mechanical principle, in combination with the geometric parameters of the shape roller (such as radius, wrap angle, etc.) and factors such as the friction coefficient between the strip and the shape roller, the tension of the strip is calculated using the corresponding calculation formula. For example, when a pressure sensor is used to measure the vertical pressure on the shape roller, the tension component of the strip in the running direction can be calculated through the principle of force decomposition.

[0110] Optionally, the step of calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller in response to determining that no rectification operation is required includes: calculating the tension of the rolled strip through the following formula according to the radial force corresponding to each interval in each interval of the shape roller and the friction coefficient between the shape roller and the rolled strip, using the principle of force decomposition;

[0111] ,

[0112] where, represents the tension of the rolled strip; represents the friction coefficient between the rolled strip and the shape roller; represents the wrap angle between the rolled strip and the shape roller; represents the radial force corresponding to each interval in each interval of the shape roller; represents the natural constant.

[0113] The corresponding geometric parameters of the above-mentioned shape roller may be the radius of the shape roller and the wrap angle between the rolled strip and the shape roller;

[0114] Optionally, in response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller includes: obtaining the pressure value received by the shape roller according to the radial forces in each interval; calculating the tension of the rolled strip through the following formula according to the pressure value received by the shape roller and the friction coefficient;

[0115] ,

[0116] wherein, represents the tension of the rolled strip; represents the friction coefficient between the rolled strip and the shape roller; represents the wrap angle between the rolled strip and the shape roller; represents the pressure value received by the shape roller; represents the natural constant.

[0117] As an example, the sum of the radial forces in each interval can be used as the pressure value received by the shape roller; alternatively, the sum of the radial forces in each interval can be divided by the number of intervals and then multiplied by the number of intervals, and the result can be used as the pressure value received by the shape roller.

[0118] In the embodiments of the present disclosure, in response to determining that it is detected that the rolled strip passes through the shape roller installed on the transmission path of the rolled strip, the axial direction of the shape roller is divided into multiple intervals, and the output electrical signals corresponding to each interval in each interval are respectively obtained; the output electrical signals are processed to obtain the radial forces corresponding to each interval in each interval; according to the radial forces corresponding to each interval in each interval, it is determined whether the rolled strip needs to be rectified; in response to determining that no rectification operation is required, the tension of the rolled strip is calculated according to the radial force and the wrap angle of the rolled strip on the shape roller. The embodiments of the present disclosure achieve obtaining an accurate tension value and then inputting it into closed-loop tension control.

[0119] For ease of understanding, the specific process of the embodiments of the present invention will be described below. Please refer to Figure 3 , which is a schematic diagram of an embodiment of a device for obtaining the tension of a rolled strip in an embodiment of the present invention. The device 300 for obtaining the tension of a rolled strip is applied to a rolling process control system and includes:

[0120] An electrical signal acquisition module 301, configured to divide the axial direction of the shape roller into multiple intervals in response to determining that it is detected that the rolled strip passes through the shape roller installed on the transmission path of the rolled strip, and respectively obtain the output electrical signals corresponding to each interval in each interval;

[0121] An electrical signal processing module 302, configured to perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval;

[0122] A deviation correction determination module 303, configured to determine whether the rolled strip needs to be subjected to a deviation correction operation according to the radial force corresponding to each interval in each interval;

[0123] A tension calculation module 304, configured to, in response to determining that no deviation correction operation is required, calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll.

[0124] Optionally, before the electrical signal acquisition module, the device further includes:

[0125] A detection electrical signal acquisition module, configured to apply a force with a target force value to the shape roll and acquire a detection electrical signal through a sensor on the shape roll;

[0126] A pressure value determination module, configured to perform signal processing on the detection electrical signal to obtain the pressure value received by the shape roll;

[0127] A pressure value equality determination module, configured to determine whether the pressure value is the same as the target force value;

[0128] A guiding module, configured to, in response to determining that the pressure value is the same as the target force value, guide the rolled strip to the shape roll through a guiding device on the rolling process control system;

[0129] A wrap angle adjustment module, configured to adjust the wrap angle between the rolled strip and the shape roll according to the pre-acquired measurement requirements and the strip characteristics of the rolled strip.

[0130] Optionally, before the tension calculation module, the device further includes:

[0131] An initial tension determination module, configured to, in response to determining that no deviation correction operation is required, determine the initial tension according to the attribute information of the rolled strip;

[0132] An initial tension application module, configured to apply the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension;

[0133] A radial force acquisition module, configured to, in response to the controller in the rolling process control system applying the initial tension to the rolled strip, acquire the radial force corresponding to each interval in each interval;

[0134] An interval tension calculation module, configured to calculate the strip interval tension of each interval according to the radial force of each interval and the wrap angle of the rolled strip on the shape roller;

[0135] An interval tension equality determination module, configured to determine whether the strip interval tension of each interval in the respective intervals is the same;

[0136] A system startup module, configured to start the rolling process control system in response to determining that the strip interval tension of each interval is the same.

[0137] Optionally, the tension calculation module includes:

[0138] A first tension calculation sub-module, configured to calculate the tension of the rolled strip through the following formula according to the radial force corresponding to each interval in each interval of the shape roller and the friction coefficient between the shape roller and the rolled strip, using the principle of force decomposition;

[0139] ,

[0140] where, represents the tension of the rolled strip; represents the friction coefficient between the rolled strip and the shape roller; represents the wrap angle between the rolled strip and the shape roller; represents the radial force corresponding to each interval in each interval of the shape roller; represents the natural constant.

[0141] Optionally, the device further includes:

[0142] A deviation correction information generation module, configured to generate deviation correction information according to the radial force corresponding to each interval in the respective intervals in response to determining that a deviation correction operation is required;

[0143] A system adjustment module, configured to adjust the rolling process control system by the controller according to the deviation correction information;

[0144] An electrical signal re-acquisition module, configured to re-acquire the output electrical signal corresponding to each interval in each interval respectively in response to determining that the adjustment is completed;

[0145] A radial force determination module, configured to perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval;

[0146] A strip tension calculation module, configured to calculate the tension of the rolled strip corresponding to each interval according to the radial force corresponding to each interval in each interval and the wrap angle of the rolled strip on the shape roller;

[0147] A data processing module for processing data on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip.

[0148] Optionally, the tension calculation module includes:

[0149] A pressure value acquisition sub-module for obtaining the pressure value received by the shape roll according to the radial forces of the respective intervals;

[0150] A second tension calculation sub-module for calculating the tension of the rolled strip according to the pressure value received by the shape roll and the friction coefficient through the following formula;

[0151] ,

[0152] where, represents the tension of the rolled strip; represents the friction coefficient between the rolled strip and the shape roll; represents the wrap angle between the rolled strip and the shape roll; represents the pressure value received by the shape roll; represents the natural constant.

[0153] In the embodiments of the present disclosure, in response to determining that it is detected that the rolled strip passes through the shape roll installed on the transmission path of the rolled strip, the axial direction of the shape roll is divided into multiple intervals, and the output electrical signals corresponding to each interval in each interval are respectively obtained; the output electrical signals are signal-processed to obtain the radial forces corresponding to each interval in each interval; according to the radial forces corresponding to each interval in each interval, it is determined whether the rolled strip needs to be rectified; in response to determining that no rectification operation is required, the tension of the rolled strip is calculated according to the radial force and the wrap angle of the rolled strip on the shape roll. The embodiments of the present disclosure achieve obtaining accurate tension values and then inputting them into closed-loop tension control.

[0154] Above Figure 3 The device for obtaining the tension of the rolled strip in the embodiments of the present invention is described in detail from the perspective of modular functional entities. Below, the equipment for obtaining the tension of the rolled strip in the embodiments of the present invention is described in detail from the perspective of hardware processing.

[0155] Figure 4FIG. 0 is a schematic structural diagram of an apparatus for obtaining the tension of a rolled strip provided by an embodiment of the present invention. The apparatus 400 for obtaining the tension of a rolled strip may vary greatly due to different configurations or performances, and may include one or more processors (central processing units, CPUs) 410 (for example, one or more processors) and a memory 420, and one or more storage media 430 for storing application programs 433 or data 432 (for example, one or more mass storage devices). Among them, the memory 420 and the storage media 430 may be transient storage or persistent storage. The program stored in the storage media 430 may include one or more modules (not shown in the figure), and each module may include a series of computer program operations in the apparatus 400 for obtaining the tension of a rolled strip. Further, the processor 410 may be configured to communicate with the storage media 430 and execute a series of computer program operations in the storage media 430 on the apparatus 400 for obtaining the tension of a rolled strip.

[0156] The apparatus 400 for obtaining the tension of a rolled strip may further include one or more power supplies 440, one or more wired or wireless network interfaces 450, one or more input / output interfaces 460, and / or, one or more operating systems 431, such as Windows Serve, Mac OS X, Unix, Linux, FreeBSD, and so on. Those skilled in the art can understand that Figure 4 the shown structural diagram of the apparatus for obtaining the tension of a rolled strip does not limit the apparatus for obtaining the tension of a rolled strip, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0157] The present invention also provides an apparatus for obtaining the tension of a rolled strip, including: a memory and at least one processor, wherein a computer program is stored in the memory, and the memory and the at least one processor are interconnected by a line; the at least one processor calls the computer program in the memory so that the apparatus for obtaining the tension of a rolled strip executes the steps in the above method for obtaining the tension of a rolled strip.

[0158] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. A computer program is stored in the computer-readable storage medium. When the computer program runs on a computer, the computer is caused to execute the steps of the method for obtaining the tension of a rolled strip.

[0159] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0160] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several computer programs to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The foregoing storage medium includes: various media that can store program codes such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs.

[0161] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for obtaining the tension of a rolled strip, characterized in that, The method is applied to a rolling process control system, including: In response to determining that a rolled strip is detected passing through a shape roll installed on the transmission path of the rolled strip, dividing the axial direction of the shape roll into multiple intervals, and respectively obtaining the output electrical signals corresponding to each interval in each of the intervals; Performing signal processing on the output electrical signals to obtain the radial forces corresponding to each interval in each of the intervals; Determining whether the rolled strip needs to be rectified according to the radial forces corresponding to each interval in each of the intervals; In response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll; Before the step of in response to determining that a rolled strip is detected passing through a shape roll installed on the transmission path of the rolled strip, dividing the axial direction of the shape roll into multiple intervals, and respectively obtaining the output electrical signals corresponding to each interval in each of the intervals, the method further includes: Applying a force with a target force value to the shape roll, and obtaining a detection electrical signal through a sensor on the shape roll; Performing signal processing on the detection electrical signal to obtain the pressure value received by the shape roll; Determining whether the pressure value is the same as the target force value; In response to determining that the pressure value is the same as the target force value, guiding the rolled strip onto the shape roll through a guiding device on the rolling process control system; Adjusting the wrap angle between the rolled strip and the shape roll according to the pre-obtained measurement requirements and the strip characteristics of the rolled strip; Before the step of in response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll, the method further includes: In response to determining that no rectification operation is required, determining an initial tension according to the attribute information of the rolled strip; Applying the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension; In response to the controller in the rolling process control system applying the initial tension to the rolled strip, obtaining the radial forces corresponding to each interval in each of the intervals; Calculating the strip interval tensions of each interval according to the radial forces of each interval and the wrap angle of the rolled strip on the shape roll; Determining whether the strip interval tensions of each interval in each of the intervals are the same; In response to determining that the strip interval tensions of each interval are the same, starting the rolling process control system; The step of in response to determining that no rectification operation is required, calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roll includes: Calculating the tension of the rolled strip through the following formula according to the radial forces corresponding to each interval in each of the intervals of the shape roll and the friction coefficient between the shape roll and the rolled strip, using the principle of force decomposition; ， Among them, is expressed as the tension of the rolled strip; is expressed as the friction coefficient between the rolled strip and the shape roll; is expressed as the wrap angle between the rolled strip and the shape roll; is expressed as the radial force corresponding to each interval in each interval of the shape roll; is expressed as the natural constant; The method further includes: In response to determining that a rectification operation is required, generating rectification information according to the radial forces corresponding to each interval in each of the intervals; The controller adjusts the rolling process control system according to the rectification information; In response to determining that the adjustment is completed, respectively obtaining the output electrical signals corresponding to each interval in each of the intervals again; Perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval; Calculate the tension of the rolled strip corresponding to each interval according to the radial force corresponding to each interval in each interval and the wrap angle of the rolled strip on the shape roller; Perform data processing on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip; The step of calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the shape roller in response to determining that no rectification operation is required includes: Obtain the pressure value received by the shape roller according to the radial forces in each interval; Obtain the tension of the rolled strip through the following formula according to the pressure value received by the shape roller and the friction coefficient; ， Among them, is expressed as the tension of the rolled strip; is expressed as the friction coefficient between the rolled strip and the shape roller; is expressed as the wrap angle between the rolled strip and the shape roller; is expressed as the pressure value received by the shape roller; is expressed as the natural constant.

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