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

Abstract

The invention relates to the technical field of industrial control, in particular to a method and device for obtaining the tension of a rolled strip and a rolling process control system.The method comprises the steps that in response to the fact that it is determined that the rolled strip passes through a strip-shaped roller installed on a conveying path of the rolled strip, the axial direction of the strip-shaped roller is divided into multiple sections, respectively acquiring an output electric signal corresponding to each interval in each interval; performing signal processing on the output electric signal to obtain a radial force corresponding to each interval; according to the radial force corresponding to each interval in all the intervals, whether deviation correction operation needs to be conducted on the rolled strip or not is determined; and calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the strip shape roller in response to determining that deviation correction operation does not need to be carried out. According to the embodiment of the invention, the accurate tension value is obtained, and then closed-loop tension control is put into use.

Description

Technical Field

[0001] The present application relates to the field of industrial control technology, and in particular 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 mill is a common mechanical equipment in the aluminum processing industry. At present, the tension of aluminum foil rolling mill is usually controlled in an open loop. This is because the aluminum foil material is quite thin, and the measurement accuracy of ordinary tension meters is difficult to meet the requirements, while the cost of high-precision tension meters is relatively high. Therefore, many ordinary aluminum foil rolling mills do not measure tension and cannot perform closed-loop control.

[0003] The principle of tension open-loop control is to calculate the output torque of the motor through the formula based on the coil diameter of the coil on the coiler and the preset tension. The main disadvantages of the open-loop method are: poor tension stability after interference, inaccurate actual tension, and the tension value of the process design cannot be fully implemented; the tension error 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; 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 object, the present invention provides a method for obtaining the tension of a rolled strip, the method being applied to a rolling process control system, comprising: in response to determining that a rolled strip passes through a plate-shaped roller installed on a transmission path of the rolled strip, dividing the axial direction of the plate-shaped roller into a plurality of sections, and respectively obtaining an output electrical signal corresponding to each section in each section; Processing the output electrical signal to obtain a radial force corresponding to each interval in each interval; Determining whether the rolled strip needs to be corrected according to the radial force corresponding to each interval in each interval; In response to determining that a deflection correction operation is not required, the tension of the rolled strip is calculated based on the radial force and the wrap angle of the rolled strip on the plate-shaped roller.

[0006] Optionally, before the step of dividing the axial direction of the plate-shaped roller into a plurality of intervals in response to determining that the rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip, and respectively acquiring the output electrical signal corresponding to each interval in each interval, the method further comprises: Applying a force of a target force value to the plate-shaped roller, and acquiring a detection electrical signal through a sensor on the plate-shaped roller; Processing the detected electrical signal to obtain the pressure value of the plate-shaped roller; determining whether the pressure value and the target force value are the same; In response to determining that the pressure value and the target force value are the same, guiding the rolled strip onto the plate-shaped roller via a guide device on the rolling process control system; According to the measurement requirements acquired in advance and the strip properties of the rolled strip, the wrap angle between the rolled strip and the plate-shaped roller is adjusted.

[0007] Optionally, before calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller in response to determining that no deviation correction operation is required, the method further comprises: In response to determining that no deviation correction operation is required, determining an initial tension according to the property information of the rolled strip; According to the initial tension, applying the initial tension to the rolled strip through a controller in the rolling process control system; In response to a controller in the rolling process control system applying the initial tension to the rolled strip, a radial force corresponding to each interval in each interval is obtained; Calculating the strip zone tension in each zone according to the radial force in each zone and the wrap angle of the rolled strip on the plate-shaped roller; Determining whether the strip interval tension in each interval of the intervals is the same; In response to determining that the strip interval tensions in each interval are the same, the rolling process control system is activated.

[0008] Optionally, in response to determining that no deviation correction 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 plate-shaped roller comprises: According to the radial force corresponding to each interval in each interval of the plate-shaped roller and the friction coefficient between the plate-shaped roller and the rolled strip, the tension of the rolled strip is calculated by the following formula using the force decomposition principle; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the radial force corresponding to each interval in each interval of the plate-shaped roller; Expressed as a natural constant.

[0009] Optionally, the method further comprises: In response to determining that a correction operation is required, generating correction information according to the radial force corresponding to each of the intervals; The controller adjusts the rolling process control system according to the deviation correction information; In response to determining that the adjustment is completed, reacquiring the output electrical signal corresponding to each interval in each interval; Processing the output electrical signal to obtain a 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 plate-shaped roller; Data processing is performed on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip.

[0010] Optionally, in response to determining that no deviation correction 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 plate-shaped roller comprises: According to the radial forces in each interval, the pressure value on the plate-shaped roller is obtained; According to the pressure value of the plate-shaped roller and the friction coefficient, the tension of the rolled strip is calculated by the following formula: , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the pressure value on the plate-shaped roller; Expressed as a natural constant.

[0011] In addition, to achieve the above-mentioned purpose, the present invention also provides a rolling process control system, comprising: a plate-shaped roller, a guide device and a controller; The plate-shaped roller is installed on the transmission path of the rolled strip, and the plate-shaped roller is perpendicular to the running direction of the strip; the plate-shaped roller includes a roller body, a sensor and a signal processing device; wherein the roller body is the main structure of the plate-shaped roller, and the surface is in direct contact with the rolled strip; the sensor is installed in the roller body 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, and 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 used to reflect the plate shape condition of the rolled strip; and is connected to the controller for communication; The guide device is used to guide the rolled strip onto the plate-shaped roller so that the strip is in full contact with the surface of the plate-shaped roller; The controller is used to determine whether the tension of the rolled strip is within a preset range based on the electrical signal generated by the sensor; generate warning information in response to determining that the tension of the rolled strip is not within the preset range; and control the operation of the rolling process control system based on the warning information.

[0012] In addition, to achieve the above-mentioned purpose, the present invention also provides a device for obtaining the tension of a rolled strip, the device being applied to a rolling process control system, comprising: An electrical signal acquisition module, configured to, in response to determining that a rolled strip passes through a plate-shaped roller installed on a transmission path of the rolled strip, divide the axial direction of the plate-shaped roller into a plurality of sections, and respectively acquire an output electrical signal corresponding to each section in each section; An electrical signal processing module, used for performing signal processing on the output electrical signal to obtain a radial force corresponding to each interval in each interval; A deviation correction determination module, used to determine whether the rolled strip needs to be corrected according to the radial force corresponding to each interval in each interval; A tension calculation module is used to calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller in response to determining that no deviation correction operation is required.

[0013] Optionally, before the electrical signal acquisition module, the device further includes: A detection electrical signal acquisition module, used for applying a force of a target force value to the plate-shaped roller, and acquiring a detection electrical signal through a sensor on the plate-shaped roller; A pressure value determination module, used for performing signal processing on the detection electrical signal to obtain the pressure value of the plate-shaped roller; A pressure value sameness determination module, used to determine whether the pressure value and the target force value are the same; a guiding module, for guiding the rolled strip onto the plate-shaped roller via a guiding device on the rolling process control system in response to determining that the pressure value is the same as the target force value; The wrap angle adjustment module is used to adjust the wrap angle between the rolled strip and the plate-shaped roller according to the pre-acquired measurement requirements and the strip characteristics of the rolled strip.

[0014] Optionally, before the tension calculation module, the device further includes: an initial tension determination module, configured to determine an initial tension according to the property information of the rolled strip in response to determining that no deviation correction operation is required; An initial tension applying module, used for applying the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension; A radial force acquisition module, used for applying the initial tension to the rolled strip in response to the controller in the rolling process control system, and acquiring the radial force corresponding to each interval in each interval; An interval tension calculation module, used to calculate the interval tension of the strip in each interval according to the radial force in each interval and the wrap angle of the rolled strip on the plate-shaped roller; An interval tension same determination module is used to determine whether the interval tension of the strip in each interval of the intervals is the same; The system start-up module is used to start the rolling process control system in response to determining that the strip interval tension in each interval is the same.

[0015] Optionally, the tension calculation module includes: A first tension calculation submodule is used to calculate the tension of the rolled strip by the following formula using the force decomposition principle according to the radial force corresponding to each interval in each interval of the plate-shaped roller and the friction coefficient between the plate-shaped roller and the rolled strip; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the radial force corresponding to each interval in each interval of the plate-shaped roller; Expressed as a natural constant.

[0016] Optionally, the device further comprises: A correction information generating module, configured to generate correction information according to the radial force corresponding to each of the intervals in response to determining that a correction operation is required; A system adjustment module, used for a controller to adjust the rolling process control system according to the deviation correction information; an electrical signal reacquisition module, configured to reacquire the output electrical signal corresponding to each interval in response to determining that the adjustment is completed; A radial force determination module, used for performing signal processing on the output electrical signal to obtain a radial force corresponding to each interval in each interval; A strip tension calculation module, used 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 plate roller; The data processing module is used to perform data processing on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip.

[0017] Optionally, the tension calculation module includes: A pressure value acquisition submodule, used for obtaining the pressure value of the plate-shaped roller according to the radial force of each interval; A second tension calculation submodule is used to calculate the tension of the rolled strip according to the pressure value of the plate-shaped roller and the friction coefficient by the following formula; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the pressure value on the plate-shaped roller; Expressed as a natural constant.

[0018] In addition, to achieve the above-mentioned purpose, the present invention also provides a device for obtaining the tension of a rolled strip, characterized in that the device for obtaining the tension of a rolled strip comprises: a memory, a processor, and a program for obtaining the tension of a rolled strip stored in 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.

[0019] In addition, to achieve the above-mentioned purpose, the present invention also 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.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The method is applied to a rolling process control system. In response to determining that a rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip, the axial direction of the plate-shaped roller is divided into multiple intervals, and the output electrical signal corresponding to each interval in each interval is obtained respectively; the output electrical signal is 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, it is determined whether the rolled strip needs to be corrected; in response to determining that the corrected operation is not required, the tension of the rolled strip is calculated according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller. The embodiment of the present disclosure realizes the acquisition of accurate tension value, and then puts into closed-loop tension control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an embodiment of a rolling process control system in an embodiment of the present invention; Figure 2A schematic diagram of an embodiment of a method for obtaining the tension of a rolled strip in an embodiment of the present invention; Figure 3 A schematic diagram of an embodiment of a device for obtaining the tension of a rolled strip in an embodiment of the present invention; 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

[0022] The main purpose of the present application is to provide a method for obtaining the tension of a rolled strip; without installing a tension meter, the actual tension value is obtained through the air bearing plate roller (ABSM for short) configured by the aluminum foil rolling mill for tension closed-loop control.

[0023] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] For easier understanding, please refer to Figure 1 , is a schematic diagram of an embodiment of a rolling process control system in an embodiment of the present invention; the rolling process control system comprises: a plate-shaped roller, a guide device and a controller; The plate-shaped roller is installed on the transmission path of the rolled strip, and the plate-shaped roller is perpendicular to the running direction of the strip; the plate-shaped roller includes a roller body, a sensor and a signal processing device; wherein the roller body is the main structure of the plate-shaped roller, and the surface is in direct contact with the rolled strip; the sensor is installed in the roller body 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, and 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 used to reflect the plate shape condition of the rolled strip; and is connected to the controller for communication; The above-mentioned data information reflecting the plate shape condition may be data describing the overall shape characteristics of the plate, data reflecting the local shape changes of the plate, derived data calculated based on pressure distribution, and statistical analysis data.

[0025] During the running of the strip, the sensor in the plate roller outputs electrical signals, which are related to the pressure exerted by the strip on the plate roller or the strain of the plate roller, and thus reflect the tension of the strip. According to the principle of mechanics, combined with the geometric parameters of the plate roller (such as radius, wrap angle, etc.) and the friction coefficient between the strip and the plate roller, the tension of the strip is calculated using the corresponding calculation formula.

[0026] The guide device is used to guide the rolled strip onto the plate-shaped roller so that the strip is in full contact with the surface of the plate-shaped roller; The guide device can be a guide roller, which is used to provide a strip with a fixed guide angle. The aluminum foil strip drawn from the uncoiler is guided so that it runs accurately 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 so that it can pass through various rolling equipment smoothly. This is crucial to ensure the rolling quality and the normal operation of the equipment.

[0027] The controller is used to determine whether the tension of the rolled strip is within a preset range based on the electrical signal generated by the sensor; generate warning information in response to determining that the tension of the rolled strip is not within the preset range; and control the operation of the rolling process control system based on the warning information.

[0028] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 2 , 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, wherein the method is applied to a rolling process control system, and comprises: Step 201, in response to determining that a rolled strip passes through a plate-shaped roller installed on a transmission path of the rolled strip, the plate-shaped roller is divided into a plurality of sections in the axial direction, and an output electrical signal corresponding to each section in each section is obtained respectively.

[0029] It is understandable that the execution subject of the present invention may be a method for obtaining the tension of a rolled strip, or may be a terminal or a server, which is not specifically limited herein. The embodiment of the present invention is described by taking a server as an execution subject as an example.

[0030] The above-mentioned execution subject can determine whether the rolled strip passes through the plate-shaped roller installed on the transmission path of the rolled strip through a camera device pre-installed on the process control system. As an example, when the rolled strip passes through the plate-shaped roller installed on the transmission path of the rolled strip, the plate-shaped roller is divided into a plurality of sections according to the axial direction of the plate-shaped roller, and the output electrical signal corresponding to each section in each section is obtained respectively; the plate-shaped roller is equipped with a plurality of sensors; each section can correspond to a sensor, so that we can obtain the radial force distribution of each part of the strip on the plate-shaped roller. The above-mentioned plate-shaped roller can be an air bearing plate-shaped roller (Air Bearing Shape Meter).

[0031] Optionally, in response to determining that the rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip, dividing the axial direction of the plate-shaped roller into a plurality of intervals, and respectively acquiring the output electrical signal corresponding to each interval in each interval, the method further includes: applying a force of a target force value to the plate-shaped roller, and acquiring a detection electrical signal through a sensor on the plate-shaped roller; performing signal processing on the detection electrical signal to obtain a pressure value exerted on the plate-shaped roller; 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 plate-shaped roller through a guide device on the rolling process control system; and adjusting the wrap angle between the rolled strip and the plate-shaped roller according to the measurement requirements acquired in advance and the strip characteristics of the rolled strip.

[0032] The force of the above-mentioned target force value can be a pre-set known standard force; as an example, a known standard force is applied to the plate-shaped roller, and a detection electrical signal is obtained through the sensor on the plate-shaped roller; the channel calculates the detection electrical signal to obtain the force detected by the sensor on the plate-shaped roller, and the detected force is compared with the applied known standard force. When the detected force is the same as the applied known standard force, the rolled strip is guided to the plate-shaped roller through a guide device, etc., so that the strip is in full contact with the surface of the plate-shaped roller; and it is adjusted according to the specific measurement requirements and strip characteristics, usually a more suitable angle is selected between 30° and 90°.

[0033] Optionally, before calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller in response to determining that no correction operation is required, the method also includes: determining an initial tension according to property information of the rolled strip in response to determining that no correction operation is required; applying the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension; obtaining the radial force corresponding to each interval in each interval in response to the controller in the rolling process control system applying the initial tension to the rolled strip; 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 plate-shaped roller; determining whether the strip interval tension of each interval in the intervals is the same; and starting the rolling process control system in response to determining that the strip interval tensions of each interval are the same.

[0034] The above-mentioned attribute information may include information such as material, thickness, width, etc. of the rolled strip; the above-mentioned initial tension may be manually set in advance; As an example, when it is determined that no correction operation is required, a certain initial tension is applied to the strip to keep it in a stable running state on the plate-shaped roller to prevent the strip from being too loose or too tight. The size of the initial tension can be preliminarily estimated and adjusted according to factors such as the material, thickness, width and rolling process requirements of the strip to ensure the smooth progress of subsequent measurements; the plate-shaped roller is divided into multiple intervals according to the axial direction of the plate-shaped roller, and the radial force is obtained for each interval; the above radial force can be obtained by the sensor on the plate-shaped roller; the strip interval tension of each interval is calculated according to the radial force of each interval and the wrap angle of the rolled strip on the plate-shaped roller; it is determined whether the strip interval tension of each interval in the intervals is the same; in response to determining that the strip interval tension of each interval is the same, the rolling process control system is started; after confirming that the strip position and tension adjustment are appropriate, the rolling equipment is started to make the strip run through the plate-shaped roller at a stable speed.

[0035] Step 202: Process the output electrical signal to obtain a radial force corresponding to each interval in each interval.

[0036] The execution subject may perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval. The signal processing may be amplifying, filtering, converting, etc. the electrical signal collected by the sensor.

[0037] Step 203: Determine whether the rolled strip needs to be corrected according to the radial force corresponding to each interval in each interval.

[0038] The above-mentioned execution entity can determine whether the rolled strip needs to be corrected 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 rolled strip does not need to be corrected; or when the difference between the radial forces corresponding to each interval is within a preset range, the rolled strip does not need to be corrected; the above-mentioned preset range can be set artificially.

[0039] Optionally, in response to determining that a correction operation is required, correction information is generated according to the radial force corresponding to each of the intervals; the controller adjusts the rolling process control system according to the correction information; in response to determining that the adjustment is completed, the output electrical signal corresponding to each of the intervals is re-acquired respectively; the output electrical signal is signal-processed to obtain the radial force corresponding to each of the intervals; based on the radial force corresponding to each of the intervals and the wrap angle of the rolled strip on the plate 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.

[0040] The above-mentioned correction information can be data used to describe the need for adjustment; the rolling process control system is adjusted according to the determined correction information; after the adjustment is completed, the output electrical signals corresponding to each interval in each interval are respectively obtained, 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 plate 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-mentioned data processing can add the tension of the rolled strip corresponding to each interval, and use the calculated result as the tension of the rolled strip; it can also take the average value of the tension of the rolled strip corresponding to each interval, multiply it by the number of intervals, and use the calculated result as the tension of the rolled strip.

[0041] Step 204: In response to determining that no deviation 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 plate-shaped roller.

[0042] The above-mentioned execution subject can calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller when it is determined that no correction operation is required. As an example, according to the principle of mechanics, combined with the geometric parameters of the plate-shaped roller (such as radius, wrap angle, etc.) and the friction coefficient between the strip and the plate-shaped roller, etc., 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 plate-shaped roller, the tension component of the strip along the running direction can be calculated by the principle of force decomposition.

[0043] Optionally, in response to determining that no deviation correction 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 plate-shaped roller, comprises: calculating the tension of the rolled strip according to the following formula using the force decomposition principle according to the radial force corresponding to each interval in each interval of the plate-shaped roller and the friction coefficient between the plate-shaped roller and the rolled strip; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the radial force corresponding to each interval in each interval of the plate-shaped roller; Expressed as a natural constant.

[0044] The geometric parameters corresponding to the plate-shaped roller may be the radius of the plate-shaped roller and the wrap angle between the rolled strip and the plate-shaped roller; Optionally, in response to determining that no deviation 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 plate-shaped roller, including: obtaining the pressure value of the plate-shaped roller according to the radial force of each interval; and calculating the tension of the rolled strip according to the pressure value of the plate-shaped roller and the friction coefficient by the following formula; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the pressure value on the plate-shaped roller; Expressed as a natural constant.

[0045] As an example, the sum of the radial forces in the intervals can be used as the pressure value of the plate-shaped roller; or the sum of the radial forces in the intervals 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 of the plate-shaped roller.

[0046] In the embodiment of the present disclosure, in response to determining that the rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip, the axial direction of the plate-shaped roller is divided into multiple intervals, and the output electrical signal corresponding to each interval in each interval is obtained respectively; the output electrical signal is 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, it is determined whether the rolled strip needs to be corrected; in response to determining that the corrected operation is not required, the tension of the rolled strip is calculated according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller. The embodiment of the present disclosure realizes the acquisition of accurate tension value, and then puts into closed-loop tension control.

[0047] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 3 , 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, wherein the device 300 for obtaining the tension of a rolled strip is applied to a rolling process control system and comprises: The electric signal acquisition module 301 is used for, in response to determining that the rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip, dividing the axial direction of the plate-shaped roller into a plurality of sections, and respectively acquiring the output electric signal corresponding to each section in each section; The electrical signal processing module 302 is used to perform signal processing on the output electrical signal to obtain the radial force corresponding to each interval in each interval; A deviation correction determination module 303, used to determine whether the rolled strip needs to be corrected according to the radial force corresponding to each interval in each interval; The tension calculation module 304 is used to calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller in response to determining that no deviation correction operation is required.

[0048] Optionally, before the electrical signal acquisition module, the device further includes: A detection electrical signal acquisition module, used for applying a force of a target force value to the plate-shaped roller, and acquiring a detection electrical signal through a sensor on the plate-shaped roller; A pressure value determination module, used for performing signal processing on the detection electrical signal to obtain the pressure value of the plate-shaped roller; A pressure value sameness determination module, used to determine whether the pressure value and the target force value are the same; a guiding module, for guiding the rolled strip onto the plate-shaped roller via a guiding device on the rolling process control system in response to determining that the pressure value is the same as the target force value; The wrap angle adjustment module is used to adjust the wrap angle between the rolled strip and the plate-shaped roller according to the pre-acquired measurement requirements and the strip characteristics of the rolled strip.

[0049] Optionally, before the tension calculation module, the device further includes: an initial tension determination module, configured to determine an initial tension according to the property information of the rolled strip in response to determining that no deviation correction operation is required; An initial tension applying module, used for applying the initial tension to the rolled strip through a controller in the rolling process control system according to the initial tension; A radial force acquisition module, used for applying the initial tension to the rolled strip in response to the controller in the rolling process control system, and acquiring the radial force corresponding to each interval in each interval; An interval tension calculation module, used to calculate the interval tension of the strip in each interval according to the radial force in each interval and the wrap angle of the rolled strip on the plate-shaped roller; An interval tension same determination module is used to determine whether the interval tension of the strip in each of the intervals is the same; The system start-up module is used to start the rolling process control system in response to determining that the strip interval tension in each interval is the same.

[0050] Optionally, the tension calculation module includes: A first tension calculation submodule is used to calculate the tension of the rolled strip by the following formula using the force decomposition principle according to the radial force corresponding to each interval in each interval of the plate-shaped roller and the friction coefficient between the plate-shaped roller and the rolled strip; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the radial force corresponding to each interval in each interval of the plate-shaped roller; Expressed as a natural constant.

[0051] Optionally, the device further comprises: A correction information generating module, configured to generate correction information according to the radial force corresponding to each of the intervals in response to determining that a correction operation is required; A system adjustment module, used for a controller to adjust the rolling process control system according to the deviation correction information; an electrical signal reacquisition module, configured to reacquire the output electrical signal corresponding to each interval in response to determining that the adjustment is completed; A radial force determination module, used for performing signal processing on the output electrical signal to obtain a radial force corresponding to each interval in each interval; A strip tension calculation module, used 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 plate roller; The data processing module is used to perform data processing on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip.

[0052] Optionally, the tension calculation module includes: A pressure value acquisition submodule, used for obtaining the pressure value of the plate-shaped roller according to the radial force of each interval; A second tension calculation submodule is used to calculate the tension of the rolled strip according to the pressure value of the plate-shaped roller and the friction coefficient by the following formula; , in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the pressure value on the plate-shaped roller; Expressed as a natural constant.

[0053] In the embodiment of the present disclosure, in response to determining that the rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip, the axial direction of the plate-shaped roller is divided into multiple intervals, and the output electrical signal corresponding to each interval in each interval is obtained respectively; the output electrical signal is 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, it is determined whether the rolled strip needs to be corrected; in response to determining that the corrected operation is not required, the tension of the rolled strip is calculated according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller. The embodiment of the present disclosure realizes the acquisition of accurate tension value, and then puts into closed-loop tension control.

[0054] above Figure 3 The apparatus for obtaining the tension of a rolled strip in an embodiment of the present invention is described in detail from the perspective of modular functional entities. The following describes the apparatus for obtaining the tension of a rolled strip in an embodiment of the present invention in detail from the perspective of hardware processing.

[0055] Figure 44 is a schematic diagram of the structure of a device for obtaining the tension of a rolled strip provided by an embodiment of the present invention. The device 400 for obtaining the tension of a rolled strip may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 410 (for example, one or more processors) and a memory 420, and one or more storage media 430 (for example, one or more mass storage devices) storing application programs 433 or data 432. Among them, the memory 420 and the storage medium 430 may be short-term storage or permanent storage. The program stored in the storage medium 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 device 400 for obtaining the tension of a rolled strip. Furthermore, the processor 410 may be configured to communicate with the storage medium 430 to execute a series of computer program operations in the storage medium 430 on the device 400 for obtaining the tension of a rolled strip.

[0056] The device 400 for obtaining the tension of the rolled strip may further include one or more power supplies 440, one or more wired or wireless network interfaces 450, one or more input and output interfaces 460, and / or one or more operating systems 431, such as Windows Serve, Mac OS X, Unix, Linux, FreeBSD, etc. It will be appreciated by those skilled in the art that Figure 4 The structure of the device for obtaining the tension of a rolled strip shown does not limit the device for obtaining the tension of a rolled strip, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0057] The present invention also provides a device for obtaining the tension of a rolled strip, comprising: 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 via a line; the at least one processor calls the computer program in the memory so that the device for obtaining the tension of a rolled strip performs the steps in the above-mentioned method for obtaining the tension of a rolled strip.

[0058] 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 executes the steps of the method for obtaining the tension of a rolled strip.

[0059] 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 aforementioned method embodiments and will not be repeated here.

[0060] 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 this 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, including several computer programs to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the 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, comprising: In response to determining that a rolled strip passes through a plate-shaped roller installed on a transmission path of the rolled strip, the axial direction of the plate-shaped roller is divided into a plurality of sections, and an output electrical signal corresponding to each section in each section is obtained respectively; Processing the output electrical signal to obtain a radial force corresponding to each interval in each interval; Determining whether the rolled strip needs to be corrected according to the radial force corresponding to each interval in each interval; In response to determining that a deflection correction operation is not required, the tension of the rolled strip is calculated based on the radial force and the wrap angle of the rolled strip on the plate-shaped roller.

2. The method for obtaining the tension of a rolled strip according to claim 1, characterized in that: Before the step of dividing the axial direction of the plate-shaped roller into a plurality of sections in response to determining that the rolled strip passes through a plate-shaped roller installed on the transmission path of the rolled strip and respectively acquiring the output electrical signal corresponding to each section in each section, the method further comprises: Applying a force of a target force value to the plate-shaped roller, and acquiring a detection electrical signal through a sensor on the plate-shaped roller; Processing the detected electrical signal to obtain the pressure value of the plate-shaped roller; determining whether the pressure value and the target force value are the same; In response to determining that the pressure value and the target force value are the same, guiding the rolled strip onto the plate-shaped roller via a guide device on the rolling process control system; According to the measurement requirements acquired in advance and the strip properties of the rolled strip, the wrap angle between the rolled strip and the plate-shaped roller is adjusted.

3. The method for obtaining the tension of a rolled strip according to claim 2, characterized in that: Before calculating the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller in response to determining that no deviation correction operation is needed, the method further includes: In response to determining that no deviation correction operation is required, determining an initial tension according to the property information of the rolled strip; According to the initial tension, applying the initial tension to the rolled strip through a controller in the rolling process control system; In response to a controller in the rolling process control system applying the initial tension to the rolled strip, a radial force corresponding to each interval in each interval is obtained; Calculating the strip zone tension in each zone according to the radial force in each zone and the wrap angle of the rolled strip on the plate-shaped roller; Determining whether the strip interval tension in each interval of the intervals is the same; In response to determining that the strip interval tensions in each interval are the same, the rolling process control system is activated.

4. The method for obtaining the tension of a rolled strip according to claim 1, characterized in that: In response to determining that no deviation correction 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 plate-shaped roller, comprising: According to the radial force corresponding to each interval in each interval of the plate-shaped roller and the friction coefficient between the plate-shaped roller and the rolled strip, the tension of the rolled strip is calculated by the following formula using the force decomposition principle; ， in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the radial force corresponding to each interval in each interval of the plate-shaped roller; Expressed as a natural constant.

5. The method for obtaining the tension of a rolled strip according to claim 1, characterized in that: The method further comprises: In response to determining that a correction operation is required, generating correction information according to the radial force corresponding to each of the intervals; The controller adjusts the rolling process control system according to the deviation correction information; In response to determining that the adjustment is completed, reacquiring the output electrical signal corresponding to each interval in each interval; Processing the output electrical signal to obtain a 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 plate-shaped roller; Data processing is performed on the tension of the rolled strip corresponding to each interval to obtain the tension of the rolled strip.

6. The method for obtaining the tension of a rolled strip according to claim 3, characterized in that: In response to determining that no deviation correction 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 plate-shaped roller, comprising: According to the radial forces in each interval, the pressure value on the plate-shaped roller is obtained; According to the pressure value of the plate-shaped roller and the friction coefficient, the tension of the rolled strip is calculated by the following formula: ， in, Expressed as the tension of the rolled strip; Expressed as the friction coefficient between the rolled strip and the plate-shaped roller; It is expressed as the wrap angle between the rolled strip and the plate-shaped roller; It is expressed as the pressure value on the plate-shaped roller; Expressed as a natural constant.

7. A rolling process control system, characterized in that: include: Plate-shaped rollers, guides and controllers; The plate-shaped roller is installed on the transmission path of the rolled strip, and the plate-shaped roller is perpendicular to the running direction of the strip; the plate-shaped roller includes a roller body, a sensor and a signal processing device; wherein the roller body is the main structure of the plate-shaped roller, and the surface is in direct contact with the rolled strip; the sensor is installed in the roller body 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, and 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 used to reflect the plate shape condition of the rolled strip; and is connected to the controller for communication; The guide device is used to guide the rolled strip onto the plate-shaped roller so that the strip is in full contact with the surface of the plate-shaped roller; The controller is used to determine whether the tension of the rolled strip is within a preset range based on the electrical signal generated by the sensor; generate warning information in response to determining that the tension of the rolled strip is not within the preset range; and control the operation of the rolling process control system based on the warning information.

8. A device for obtaining the tension of a rolled strip, characterized in that: The device is applied to a rolling process control system, comprising: An electrical signal acquisition module, configured to, in response to determining that a rolled strip passes through a plate-shaped roller installed on a transmission path of the rolled strip, divide the axial direction of the plate-shaped roller into a plurality of sections, and respectively acquire an output electrical signal corresponding to each section in each section; An electrical signal processing module, used for performing signal processing on the output electrical signal to obtain a radial force corresponding to each interval in each interval; A deviation correction determination module, used to determine whether the rolled strip needs to be corrected according to the radial force corresponding to each interval in each interval; A tension calculation module is used to calculate the tension of the rolled strip according to the radial force and the wrap angle of the rolled strip on the plate-shaped roller in response to determining that no deviation correction operation is required.

9. A device for obtaining the tension of a rolled strip, characterized in that: The device for obtaining the tension of a rolled strip comprises: a memory, a processor, and a program for obtaining the tension of a rolled strip stored in the memory and executable on the processor. 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 claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program for obtaining the tension of a rolled strip, 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 claimed in any one of claims 1 to 6 are implemented.

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