A method and system for controlling the camber of a sheet based on remote transverse displacement detection

Abstract

An embodiment of the present application provides a method and system for controlling the camber of a sheet based on remote transverse displacement detection, which are applied to the technical field of rolling sheet processing. The method can first obtain the remote transverse displacement of the sheet workpiece during rolling within a preset detection period. Then, a mechanism model is called, and the roll gap inclination adjustment amount on one side of the roll body is calculated based on the mechanism model and the remote transverse displacement. Thereby, an adjustment instruction is generated based on the roll gap inclination adjustment amount, and the adjustment instruction is sent to the roll gap adjustment mechanism of the rolling mill. Among them, the mechanism model is generated based on the remote transverse displacement, combined with the transverse displacement lever arm, rolling width, and preset detection period of the sheet workpiece. The method can derive the roll gap inclination amount that needs to be adjusted for the camber of the sheet workpiece at the outlet by analyzing the relationship between the speed difference on both sides of the outlet of the sheet workpiece and the camber bending amount, so as to control the camber phenomenon of the sheet workpiece and solve the problem of low precision value caused by the camber phenomenon of the sheet.

Description

Technical Field

[0001] The present application relates to the technical field of plate processing, and in particular to a plate sickle bending control method and system based on remote lateral movement detection. Background Art

[0002] Rolled plates are metal sheets produced through a rolling process and can be categorized into thin plates, medium plates, and thick plates based on their thickness. Thin plates range in thickness from 0.2mm to 4mm, offering excellent machinability and ease of processing such as stamping and bending. Medium plates range in thickness from 4mm to 60mm, exhibiting high strength and toughness, capable of withstanding heavy loads and exhibiting excellent machinability. Thick plates range in thickness from 60mm to 115mm, exhibiting exceptional strength and rigidity, capable of withstanding significant pressure and impact.

[0003] Take medium and heavy plate, for example. Due to its excellent performance and quality, medium and heavy plate is widely used in diverse fields such as construction, container manufacturing, shipbuilding, machinery manufacturing, and hot-rolled thin plate production. It is a key branch of steel products. During the production process, uneven billet temperature distribution, billet wedge shape, differences in rolling mill stiffness, and varying reductions on both sides of the rolling mill can cause the rolled steel plate to bend or arc, leading to camber. At the mildest level, camber can result in low billet raw material utilization and increased production costs. In severe cases, the plate can bend beyond the roller table, damaging the rollers or other related equipment, and impacting normal production at the plate mill.

[0004] Since camber in medium and heavy plates primarily occurs during the extended rolling phase, camber control can be implemented during this phase to mitigate this phenomenon. For example, operators can compensate for the camber of the plate during rolling by adjusting the appropriate roll gap tilt value based on production experience to reduce the amount of camber. However, this camber adjustment method relies heavily on the operator's accumulated experience and is subject to significant lag in manual operation, resulting in low accuracy and poor control effectiveness. Summary of the Invention

[0005] In view of this, an embodiment of the present application provides a plate sickle camber control method and system based on remote lateral movement detection to solve the problem of low accuracy value caused by the plate sickle camber phenomenon.

[0006] According to one aspect of the present application, a plate camber control method based on remote lateral movement detection is provided, the method comprising:

[0007] Obtaining the far-end lateral displacement of the plate rolled piece during the rolling process within a preset detection period;

[0008] Invoking a mechanism model, the mechanism model is used to characterize the functional relationship between the roll gap tilt adjustment amount on one side of the roller body and the distal end lateral displacement; the mechanism model is generated based on the distal end lateral displacement, combined with the lateral displacement arm of the plate rolled piece, the rolling width, and the preset detection period;

[0009] Calculating the roll gap tilt adjustment amount on one side of the roller body according to the mechanism model and the distal end lateral displacement;

[0010] An adjustment instruction is generated based on the roll gap inclination adjustment amount, and the adjustment instruction is sent to a roll gap adjustment mechanism of the rolling mill.

[0011] In some embodiments, the method further comprises:

[0012] Setting speed variables on both sides, wherein the speed variables on both sides include a first side speed and a second side speed of the plate rolled piece at a rolling discharge position;

[0013] Calculating a speed difference between the two sides according to the speed variables on the two sides, wherein the speed difference between the two sides is equal to the difference between the first side speed and the second side speed;

[0014] Obtain the rolling width and the theoretical discharge length within the preset detection cycle;

[0015] Calculating the transverse lever arm according to the rolling width and the theoretical discharge length;

[0016] The mechanism model is generated based on the distal end lateral displacement, in combination with the lateral force arm, the rolling width and the preset detection period.

[0017] In some embodiments, generating the mechanism model based on the distal end lateral displacement, in combination with the lateral force arm, the rolling width, and the preset detection period includes:

[0018] Constructing a distal speed variable and a rotation angle variable, wherein the distal speed variable is used to characterize the linear speed of the distal midpoint of the plate rolled piece; and the rotation angle variable is used to characterize the deflection angle of the distal midpoint of the plate rolled piece under sickle bending.

[0019] Based on the principle that the angular velocity of each position on the plate rolled piece is the same, determining a first functional relationship between the distal velocity variable and the velocity difference between the two sides;

[0020] Acquire a second functional relationship between the rotation angle variable and the distal end lateral displacement;

[0021] The first functional relationship and the second functional relationship are combined based on the speed difference between the two sides to generate the mechanism model.

[0022] In some embodiments, the first functional relationship and the second functional relationship are combined based on the velocity difference between the two sides to generate the mechanism model, including:

[0023] Constructing thickness variables, the thickness variables including a first thickness variable and a second thickness variable, the first thickness variable being used to characterize the thickness of the plate rolled piece on the first side, and the second thickness variable being used to characterize the thickness of the plate rolled piece on the second side;

[0024] Based on the principle of constant rolling volume, a third functional relationship between the thickness variable and the speed variables on both sides is established;

[0025] Determining a fourth functional relationship between the first thickness variable and the second thickness variable based on the third functional relationship, wherein the fourth functional relationship includes a thickness coefficient, and the thickness coefficient is 1 plus a ratio of the velocity difference between the two sides to the first side velocity;

[0026] The fourth functional relationship is substituted into the thickness inclination adjustment relationship to generate the mechanism model. The thickness inclination relationship is determined according to the thickness difference, the rolling mill width and the rolled piece width; the thickness difference is equal to the difference between the first thickness variable and the second thickness variable.

[0027] In some embodiments, the fourth functional relationship is brought into the thickness tilt adjustment relationship to generate the mechanism model, including:

[0028] Get the mill width;

[0029] Calculating a tilt coefficient based on the rolling mill width and the workpiece width, wherein the tilt coefficient is 1 / 2 of the ratio of the rolling mill width to the workpiece width;

[0030] Constructing a thickness difference variable, wherein the thickness difference variable is used to represent the difference between the first thickness variable and the second thickness variable;

[0031] A fifth functional relationship between the roller body single-side thickness inclination adjustment amount and the thickness difference variable is constructed based on the inclination coefficient.

[0032] In some embodiments, the method further comprises:

[0033] Obtain the plasticity coefficient of rolled product and the stiffness of rolling mill;

[0034] Calculating a deformation coefficient based on the plastic coefficient of the rolled piece and the stiffness of the rolling mill, wherein the deformation coefficient is 1 plus the ratio of the plastic coefficient of the rolled piece to the stiffness of the rolling mill;

[0035] The deformation coefficient is added to the fifth functional relationship to generate the mechanism model.

[0036] In some embodiments, the method further includes:

[0037] Obtain the specification parameters and rolling process parameters of the rolling mill, where the specification parameters include the radius of the rolling mill rolls; the rolling process parameters include the thickness before rolling and the thickness after rolling of the sheet metal workpiece.

[0038] Create rolling angle variables, where the rolling angle variables include the bite angle and the neutral angle.

[0039] According to the geometric shape characteristics of the rolling deformation zone, establish expressions for the bite angle and the neutral angle.

[0040] In some embodiments, generating an adjustment instruction based on the roll gap inclination adjustment amount includes:

[0041] Obtain the current operating parameters of the roll gap adjustment mechanism, where the roll gap adjustment mechanism includes a first adjustment component and a second adjustment component. The first adjustment component is used to adjust the width of the roll gap on the first side; the second adjustment component is used to adjust the width of the roll gap on the second side.

[0042] Calculate the actual adjustment distance according to the current operating parameters and the roll gap inclination adjustment amount. The actual adjustment distance includes a first distance and a second distance. The first distance is used to represent the adjustment amount of the roll gap width on the first side; the second distance is used for the adjustment amount of the roll gap width on the second side.

[0043] Package the actual adjustment distance into the adjustment instruction.

[0044] In some embodiments, the method further includes:

[0045] Obtain the detection deviation.

[0046] Send the detection deviation into an integral controller, where the integral controller is used to assist in performing camber correction adjustment on the sheet metal workpiece. The set value of the integral controller is that the distal transverse displacement within a preset detection period is equal to 0; the feedback value of the integral controller is the distal transverse displacement.

[0047] Set the integral time of the integral controller.

[0048] Correct the roll gap inclination adjustment amount according to the output signal of the integral controller.

[0049] According to another aspect of the present application, there is provided a sheet metal camber control system based on distal transverse displacement detection. The system includes a rolling mill and a data processing device. The rolling mill includes a roll gap adjustment mechanism. The roll gap adjustment mechanism is connected to the data processing device, and the data processing device includes:

[0050] An acquisition module, configured to acquire the lateral displacement of the distal end of the sheet metal workpiece during rolling within a preset detection period;

[0051] A model calling module, configured to call a mechanism model, where the mechanism model is used to characterize the functional relationship between the roll gap inclination adjustment amount on one side of the roll body and the lateral displacement of the distal end; the mechanism model is generated based on the lateral displacement of the distal end, in combination with the lateral displacement lever arm, rolling width, and the preset detection period of the sheet metal workpiece;

[0052] A calculation module, configured to calculate the roll gap inclination adjustment amount on one side of the roll body according to the mechanism model and the lateral displacement of the distal end;

[0053] An instruction generation module, configured to generate an adjustment instruction based on the roll gap inclination adjustment amount, and send the adjustment instruction to the roll gap adjustment mechanism of the rolling mill.

[0054] According to another aspect of the present application, there is provided a computer device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor. When the processor executes the program, the above-mentioned method for controlling the camber of a sheet based on distal lateral displacement detection is implemented.

[0055] According to still another aspect of the present application, there is provided a storage medium, on which a computer program is stored. When the program is executed by a processor, the above-mentioned method for controlling the camber of a sheet based on distal lateral displacement detection is implemented.

[0056] By means of the above technical solutions, the embodiments of the present application provide a method and system for controlling the camber of a sheet based on distal lateral displacement detection. The method can first acquire the lateral displacement of the distal end of the sheet metal workpiece during rolling within a preset detection period. Then, call the mechanism model, and calculate the roll gap inclination adjustment amount on one side of the roll body according to the mechanism model and the lateral displacement of the distal end. Thus, an adjustment instruction is generated based on the roll gap inclination adjustment amount, and the adjustment instruction is sent to the roll gap adjustment mechanism of the rolling mill. Among them, the mechanism model is generated based on the lateral displacement of the distal end, in combination with the lateral displacement lever arm, rolling width, and preset detection period of the sheet metal workpiece. The method can derive the roll gap inclination amount that needs to be adjusted for the camber of the sheet metal workpiece at the outlet by analyzing the relationship formula between the speed difference on both sides of the outlet of the sheet metal workpiece and the camber bending amount, so as to control the camber phenomenon of the sheet metal workpiece and solve the problem of low accuracy value caused by the camber phenomenon of the sheet.

[0057] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. Description of the Drawings

[0058] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0059] Figure 1 It is a schematic structural diagram of a rolling mill provided by an embodiment of the present application;

[0060] Figure 2 It is a schematic flow diagram of a method for controlling the camber of a sheet based on remote transverse displacement detection provided by an embodiment of the present application;

[0061] Figure 3 It is a schematic diagram of a remote end face provided by an embodiment of the present application;

[0062] Figure 4 It is a schematic diagram of speeds on both sides provided by an embodiment of the present application;

[0063] Figure 5 It is a schematic diagram of a transverse displacement arm provided by an embodiment of the present application;

[0064] Figure 6 It is a schematic diagram of a deformed area of a rolled piece provided by an embodiment of the present application;

[0065] Figure 7 It is a schematic diagram of the inclination of a roll during the rolling process provided by an embodiment of the present application;

[0066] Figure 8 It is a schematic flow diagram of adjusting the inclination of a corrected roll gap provided by an embodiment of the present application;

[0067] Figure 9 It is a schematic flow diagram of a camber correction control provided by an embodiment of the present application;

[0068] Figure 10 It is a schematic structural diagram of a system for controlling the camber of a sheet based on remote transverse displacement detection provided by an embodiment of the present application. Detailed implementation manners

[0069] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0070] In the embodiments of the present application, the rolling process is a metal processing process. By applying pressure to a metal billet between rotating rolls through a rolling mill, plastic deformation occurs to the metal billet, thereby changing the shape, size, and properties of the metal billet.

[0071] The rolling process can be classified into hot rolling process and cold rolling process according to the temperature of the metal billet during processing. Among them, the hot rolling process refers to the rolling carried out above the recrystallization temperature of the metal. Taking steel as an example, the hot rolling temperature range of steel is 900°C - 1200°C. The hot rolling process can destroy the casting structure of the metal, refine the grains, eliminate the microscopic structure defects, improve the mechanical properties of the metal, and at the same time, the rolling force is small and the production efficiency is high. Therefore, the hot rolling process can be applied to the production of rolled products such as thick plates, sections, and pipes. The cold rolling process refers to the rolling carried out below the recrystallization temperature of the metal (such as at room temperature). The cold rolling process can obtain thinner plates with high dimensional accuracy, good surface quality, and excellent mechanical properties. The cold rolling process can be used to produce rolled products such as thin plates, strips, and precision pipes.

[0072] The rolling process can also be classified according to the rolled products, and can include plate rolling, section rolling, pipe rolling, wire rolling, etc. Among them, the plate rolling process is used to produce plates of various thicknesses and widths, such as hot rolled plates, cold rolled plates, etc. Section rolling is used to produce sections of various shapes, such as angle steel, channel steel, I-beam, etc. Pipe rolling is used to produce pipes of various diameters and wall thicknesses, such as seamless steel pipes, welded steel pipes, etc. Wire rolling is used to produce wires of various diameters, such as steel bars, steel wires, etc.

[0073] The equipment that applies pressure to the metal billet in the rolling process is called a rolling mill. As Figure 1 shown, the rolling mill can include a frame, rolling rolls, roll gap adjusting mechanism, etc. Among them, the rolling rolls are the components that realize the plastic deformation of the metal. The rolling rolls can include upper rolling rolls and lower rolling rolls. The upper rolling rolls and lower rolling rolls are arranged in parallel, and the metal billet passes through the gap between the upper rolling rolls and the lower rolling rolls to undergo plastic deformation. The rolling rolls can include nodular cast iron infinitely chilled rolls, cast steel rolls, alloy rolls, etc. Different materials of rolling rolls are suitable for different working sections.

[0074] The frame can include two portal frames, which are used to install the rolling roll bearing seats and the roll gap adjusting mechanism and support the rolling rolls. The frame needs to have sufficient strength and stiffness to withstand the rolling force. The frame forms can include closed frames and open frames. The closed frame has good integrity, high strength and stiffness, and is suitable for blooming mills and plate and strip rolling mills with large rolling forces, etc.; the open frame is convenient for roll changing and is mostly used in transverse section rolling mills.

[0075] The roll gap adjusting mechanism can be used to adjust the roll gap of the rolling rolls so that the rolled product reaches the required cross-sectional dimensions. Since the lower rolling roll of the rolling mill needs to bear the weight of the billet, the roll gap adjusting mechanism can adjust the height of the upper rolling roll, that is, the roll gap adjusting mechanism can include an upper roll adjusting mechanism (also called a rolling down device). The upper roll adjusting mechanism can adjust the roll gap of the rolling rolls manually, electrically, and hydraulically. Among them, the hydraulically driven upper roll adjusting mechanism has the advantages of small thickness deviation of the plate and high product qualification rate, and can be applied to new strip hot and cold rolling mills and thick plate rolling mills.

[0076] In some embodiments, the roll gap adjusting mechanism may include a first adjusting component and a second adjusting component. Among them, the first adjusting component is used to adjust the height on one side of the roll, and the second adjusting component is used to adjust the height on the other side of the roll, so as to adjust the width of the roll gap or the tilting state of the roll.

[0077] For example, the first adjusting component is located on the left side of the pressure roll, and the second adjusting component is located on the right side of the pressure roll. When it is necessary to increase the width of the roll gap between the upper roll and the lower roll, adjustment instructions for controlling the roll to rise can be sent to the first adjusting component and the second adjusting component simultaneously. When it is necessary to level the roll, according to the tilting state of the upper pressure roll, the roll gap on the left side of the pressure roll can be reduced, and the roll gap on the right side of the pressure roll can be increased. Therefore, a downward adjustment instruction can be sent to the first adjusting component, and an upward adjustment instruction can be sent to the second adjusting component to achieve the effect of leveling the upper roll.

[0078] The metal sheet produced by the rolling process is called a rolled sheet. Rolled sheets can be divided into thin sheets, medium-thick sheets, and thick sheets according to the sheet thickness. Among them, the thickness range of thin sheets is 0.2 mm to 4 mm, which has good workability and is easy to process such as stamping and bending; the thickness range of medium-thick sheets is 4 mm to 60 mm, which has high strength and toughness, can withstand large loads, and has good processing performance; the thickness range of thick sheets is 60 mm to 115 mm, which has extremely high strength and rigidity and can withstand extremely large pressure and impact force.

[0079] Taking medium-thick sheets as an example, medium-thick sheets are widely used in different fields such as the construction industry, container manufacturing, shipbuilding, machinery manufacturing, and hot-rolled thin sheet production due to their excellent performance and quality, and are one of the important branches of steel products. During the production process of medium-thick sheets, due to the uneven temperature distribution of the billet, the billet wedge, the difference in mill stiffness, and the different reduction amounts on both sides of the mill, the rolled steel sheet appears bent or arc-shaped, resulting in the phenomenon of camber in medium-thick sheets. The occurrence of the camber phenomenon in medium-thick sheets will lead to low utilization rate of the billet raw material, increase production costs, and when the bending degree of the camber is serious, the medium-thick sheet will bend beyond the roller table, damaging the roll or other related equipment, and affecting the normal production of the medium-thick sheet plant.

[0080] Since the camber phenomenon in medium-thick sheets mainly occurs in the extended stage of medium-thick sheet rolling, therefore, in some embodiments, in order to alleviate the camber phenomenon in medium-thick sheets, camber control can be carried out in the extended stage of medium-thick sheet rolling. For example, according to the bending amount of the camber of the steel sheet during the rolling process, an appropriate roll gap tilt value can be given for compensation in combination with production experience to reduce the bending amount of the camber. However, this control method of adjusting the camber depends on operation experience, and the lag of manual operation is relatively large, resulting in low accuracy value and poor control effect.

[0081] During the rolling process of plate rolled pieces, due to the combined influence of various factors on site, sickle bend defects of different situations will occur. Combined with the multi-pass reversible rolling process of plate rolled pieces, the cause of the sickle bend phenomenon of plate rolled pieces is more complicated. Therefore, in order to solve the problem of low precision value caused by the sickle bend phenomenon of plate rolled pieces during the rolling process, some embodiments of the present application provide a plate sickle bend control method based on remote transverse displacement detection. The method can deduce the roller gap inclination amount that needs to be adjusted for the sickle bend of the exit rolled piece by analyzing the relationship between the speed difference on both sides of the rolled piece outlet and the sickle bend amount, control the sickle bend phenomenon of the plate rolled piece, and automatically correct and adjust the sickle bend phenomenon to improve the product quality and yield rate of the plate rolled piece, and improve the problem of poor sickle bend control effect of the plate rolled piece.

[0082] The method can be applied to a plate camber control system based on remote lateral movement detection, wherein the system includes a rolling mill and a data processing device, wherein the rolling mill includes a roll gap adjustment mechanism connected to the data processing device.

[0083] A data processing device refers to an electronic device with data processing capabilities. Data processing devices may include, but are not limited to, computers, mobile terminals, servers, smart wearable devices, industrial control hosts, etc. In some embodiments of this application, a data processing device is used as an example to describe the plate camber control method based on remote lateral movement detection. It should be understood that the method can also be applied to other types of electronic devices, which are not shown one by one in the embodiments of this application.

[0084] The data processing device executes the program steps corresponding to the plate camber control method based on remote lateral movement detection. Figure 2 As shown, the method includes:

[0085] S101. Obtain the far-end lateral displacement of the plate rolled piece during the rolling process within a preset detection period.

[0086] To control plate camber based on distal lateral displacement detection, the data processing device can first obtain the distal lateral displacement. The distal end refers to one end face of the plate after rolling. The distal lateral displacement can indicate the severity of the camber phenomenon in the plate after rolling. Because the plate has a certain width, the distal lateral displacement can be calculated as the distance between the midpoint of the distal end face of the plate and the midpoint of the ideal distal end face of the plate.

[0087] For example, Figure 3 As shown in the figure, the metal billet moves from left to right and is formed into a plate rolled piece after passing through the rollers. The actual midpoint of the far end face of the plate rolled piece is P 1. The midpoint of the far end face of the ideal plate rolled piece is P 0, and PThe distance between 1 and P 0 is the distal transverse displacement L t .

[0088] The distal transverse displacement can be obtained through image processing, that is, the rolling process of the sheet rolling piece can be image-captured by an image acquisition sensor, and the target of the sheet rolling piece can be identified in the captured image, and then the midpoint coordinates of the distal end face of the sheet rolling piece target are marked, and according to the conveying direction of the rolling mill conveying line, the midpoint coordinates of the distal end face of the ideal sheet rolling piece are located. Then calculate the distance (number of pixel points) between the midpoint coordinates of the distal end face of the sheet rolling piece target and the midpoint coordinates of the distal end face of the ideal sheet rolling piece, and combine the image shooting parameters (such as focal length, resolution, etc.) of the image acquisition sensor to calculate the distal transverse displacement.

[0089] The distal transverse displacement can also be detected and obtained by a position sensor. For example, the position sensor can be a sensor device such as a lidar or an infrared grating. When obtaining the distal transverse displacement, the position sensor can reproduce the two-dimensional space of the sheet rolling piece to obtain point cloud data. Then perform shape recognition from the point cloud data, and determine the midpoint coordinates of the distal end face of the sheet rolling piece target and the midpoint coordinates of the distal end face of the ideal sheet rolling piece, so as to calculate the distal transverse displacement.

[0090] S102. Invoke the mechanism model.

[0091] After obtaining the distal transverse displacement, the data processing device can also invoke the mechanism model, where the mechanism model is used to characterize the functional relationship between the roll gap inclination adjustment amount on one side of the roll body and the distal transverse displacement. The mechanism model is generated based on the distal transverse displacement, combined with the transverse force arm, rolling width of the sheet rolling piece, and the preset detection period.

[0092] The data processing device can deduce the relationship between the speed difference on both sides of the steel plate and the transverse displacement according to the speeds and the sickle bend transverse displacement on both sides of the steel plate at the outlet side of the rolling mill, and then construct a mechanism model based on the relationship between the speed difference on both sides and the transverse displacement. Therefore, in order to obtain the mechanism model, in some embodiments, the data processing device can first set the speed variables on both sides, where the speed variables on both sides include the first-side speed and the second-side speed of the sheet rolling piece at the rolling discharge position.

[0093] For example, during the rolling process, assuming that the working roll of the rolling mill is a rigid roll, only considering the transverse movement of the medium-thick plate rolling piece, it is considered that the speeds on both sides of the rolling piece are different, as Figure 4 , Figure 5 shown, where the speeds on both sides of the rolling piece are the first-side speed V 1 and the second-side speed V 2, where the second-side speed V 2 is compared with the first-side speed V1 is fast, resulting in the camber phenomenon. Therefore, V 2 can be decomposed into two speeds, namely V 1 + Δ V .

[0094] After setting the speed variables on both sides, the data processing device calculates the speed difference between the two sides according to the speed variables on both sides, that is, the speed difference between the two sides is equal to the difference between the speed on the first side and the speed on the second side. That is, the speed difference Δ V is the speed on the first side V 1 and the speed on the second side V 2, Δ V = V 2 - V 1.

[0095] Then, obtain the rolling width and the theoretical discharge length within the preset detection period, and calculate the cross-movement lever arm according to the rolling width and the theoretical discharge length. For example, the rolling width is W , and the theoretical discharge length is L , then calculate the cross-movement lever arm , that is:

[0096] (Formula 1);

[0097] Among them, represents the cross-movement lever arm; W represents the rolling width; L is the theoretical discharge length.

[0098] After calculating the cross-movement lever arm, the data processing device can generate the mechanism model based on the distal cross-movement amount, in combination with the cross-movement lever arm, the rolling width, and the preset detection period. In some embodiments, in order to generate the mechanism model, the data processing device can first construct a distal speed variable and a rotation angle variable. Among them, the distal speed variable is used to characterize the linear speed of the midpoint of the distal end of the sheet metal workpiece; the rotation angle variable is used to characterize the deflection angle of the midpoint of the distal end of the sheet metal workpiece under the camber phenomenon.

[0099] Then, based on the principle that the angular velocity at each position on the sheet metal workpiece is the same, determine the first functional relationship between the distal speed variable and the speed difference between the two sides. For example, the entire sheet metal workpiece can be regarded as a rigid body, and the sheet metal workpiece rotates along O point, the width of the workpiece is W , then the angular velocity at each position on the workpiece is the same, and we get:

[0100] (Formula 2);

[0101] Among them, V1 is the first side speed; V 2 is the speed of the second side; W is the width of the rolled piece; V t is the distal velocity variable; is the lateral lever arm; L is the theoretical discharge length. After transforming the above formula, we can get the far-end velocity variable V t The speed difference between the two sides ( V 2- V 1) The first functional relationship between the speed of the rolling head (the distal speed variable V t ) can be expressed as:

[0102] (Formula 3);

[0103] in, V t is the distal velocity variable; V 1 is the first side speed; V 2 is the speed of the second side; W is the width of the rolled piece; L The data processing device then obtains a second functional relationship between the rotation angle variable and the distal end lateral displacement. Based on the speed difference between the two sides, the first functional relationship and the second functional relationship are combined to generate the mechanism model.

[0104] For example, the rotation angle (rotation angle variable) of the rolled piece undergoing rigid body rotation is θ , according to the preset detection period Δ t The far end lateral displacement of the plate rolled piece L t (lateral displacement on the right), the following relationship can be obtained:

[0105] (Formula 4);

[0106] in, θ is the rotation angle; L t is the lateral displacement of the far end of the plate rolled piece; is the lateral force arm. The second functional relationship between the rotation angle and the distal lateral displacement can be obtained by transforming the above formula, that is, the rotation angle of the plate rolled piece θ It can be expressed as:

[0107] (Formula 5);

[0108] in, θ is the rotation angle; L tis the lateral displacement of the far end of the plate rolled piece; is the lateral force arm. According to the relationship between angular velocity ω, unit time (preset detection cycle) Δt and rotation angle, The relationship between angular velocity, distal velocity variable and lateral force arm , the speed of the rolling head can be calculated as:

[0109] (Formula 6);

[0110] in, V t is the distal velocity variable; θ is the rotation angle; L t is the lateral displacement of the far end of the plate rolled piece; is the lateral force arm; Δ t is the unit time (preset detection cycle). Combined with the above related formulas, the speed difference on both sides of the plate rolling piece can be obtained, that is, the speed difference on the left and right sides is:

[0111] (Formula 7);

[0112] Among them, Δ V is the speed difference between the two sides; V 1 is the first side speed; V 2 is the speed of the second side; L t is the lateral displacement of the far end of the plate rolled piece; W is the width of the rolled piece; is the lateral force arm; Δ t It is the unit time (preset detection cycle).

[0113] The data processing device then combines the first functional relationship and the second functional relationship based on the velocity difference between the two sides to generate the mechanism model. In some embodiments, the data processing device may first construct a thickness variable. The thickness variable includes a first thickness variable and a second thickness variable. The first thickness variable is used to represent the thickness of the plate rolled piece on the first side, and the second thickness variable is used to represent the thickness of the plate rolled piece on the second side.

[0114] After the thickness variable is constructed, the data processing device can establish a third functional relationship between the thickness variable and the speed variables on both sides based on the principle of constant rolling volume. For example, assuming that the width of the rolled piece remains unchanged during the rolling process, that is, the metal does not flow horizontally, let V 2 speed becomes V 1. Controlling the rollers to make the speeds on both sides the same can reduce the new camber generated in the subsequent rolling process. Therefore, according to the principle of constant volume, we can know that:

[0115] (Formula 8);

[0116] In the formula, is the thickness of the edge of the rolled piece on the first side; h is the thickness of the edge of the rolled piece on the second side; V 1 is the speed on the first side; V 2 is the speed on the second side.

[0117] From the above formula, a third functional relationship between the thickness variable and the speed variables on both sides can be established, that is:

[0118] (Formula 9);

[0119] Among them, is the thickness of the edge of the rolled piece on the first side; h is the thickness of the edge of the rolled piece on the second side; V 2 is the speed on the second side; V 1 is the speed on the first side; Δ V is the speed difference between both sides.

[0120] Since the actual thickness of the edge of the rolled piece on the second side h and the speed on the first side V 1 cannot be accurately obtained in engineering, the average thickness can be used to replace the thickness of the edge of the rolled piece on the second side h , similarly, the speed on the first side V 1 can also be replaced by the average forward slip speed, where the average forward slip speed is calculated based on the speed of the work roll.

[0121] In some embodiments, the data processing device can also obtain the specification parameters and rolling process parameters of the rolling mill. The specification parameters include the radius of the rolling mill rolls; the rolling process parameters include the thickness before rolling and the thickness after rolling of the sheet rolled piece; then create a rolling angle variable, and the rolling angle variable includes the bite angle and the neutral angle. And according to the geometric shape characteristics of the rolling deformation zone, establish expressions for the bite angle and the neutral angle.

[0122] For example, the deformation zone of the rolled piece is as Figure 6 shown, the radius of the rolling work roll is R , the bite angle is α , the neutral angle is γ , the thickness of the rolled piece at the entrance is H , the thickness at the exit is calculated using the thickness of the edge of the rolled piece on the second side h , according to the geometric shape characteristics of the rolling deformation zone, the bite angle α can be expressed as:

[0123] (Formula 10);

[0124] Among them, Δh is the difference between the entrance thickness and the exit thickness of the rolled piece, i.e., Δ h = H - h . The neutral angle γ can be calculated according to the neutral angle formula of Ekelund (S.Ekelund), i.e.:

[0125] (Formula 11);

[0126] In the formula, γ is the neutral angle; α is the bite angle; μ s is the friction coefficient. The parameter neutral angle can be applied to calculate the forward slip value by using the forward slip formula, and then calculate the average speed to replace part of the first side speed in the above formula. For example, when obtaining the speed difference between the two sides of the rolled piece, the linear speed of the working roll of the rolling mill can be read and the speed of the rolled piece can be calculated by using the forward slip formula.

[0127] Among them, the calculation formula of the forward slip value is:

[0128] (Formula 12);

[0129] In the formula, S h is the forward slip value; D is the diameter of the rolling working roll; γ is the neutral angle; h is the edge thickness of the second side of the rolled piece. Then for the linear speed of the working roll being v the first side speed (average forward slip speed) can be calculated through the following forward slip formula V 1:

[0130] (Formula 13);

[0131] In the formula, V 1 is the first side speed; v is the linear speed of the working roll; S h is the forward slip value.

[0132] By substituting the fourth functional relationship into the regulating thickness tilt amount relationship formula, the mechanism model can be generated. Among them, the thickness tilt amount relationship formula can be determined according to the thickness difference, the width of the rolling mill, and the width of the rolled piece; the thickness difference is equal to the difference between the first thickness variable and the second thickness variable.

[0133] To substitute the fourth functional relationship into the adjustment thickness tilt amount relational expression to generate the mechanism model, the data processing device may first obtain the mill width; then calculate the tilt amount coefficient based on the mill width and the rolled piece width. Wherein, the tilt amount coefficient is 1 / 2 of the ratio of the mill width to the rolled piece width.

[0134] Then construct a thickness difference variable, which is used to characterize the difference between the first thickness variable and the second thickness variable, and construct a fifth functional relationship between the single-side thickness tilt adjustment amount of the roll body and the thickness difference variable based on the tilt amount coefficient. For example, when the rolled piece of the rolling mill tilts during the rolling process as Figure 7 shown, construct a fifth functional relationship between the single-side thickness tilt adjustment amount of the roll body and the thickness difference variable based on the tilt amount coefficient, that is, the thickness tilt amount that needs to be adjusted on the single side of the roll body l 1 is:

[0135] (Formula 14);

[0136] Wherein, l 1 is the thickness tilt amount that needs to be adjusted on the single side of the roll body; W is the width of the rolled piece; is the thickness of the edge of the rolled piece on the first side; h is the thickness of the edge of the rolled piece on the second side; L r is the horizontal distance between the left and right sides of the rolling mill, that is, the mill width; is the thickness difference between the two sides of the rolled piece; is the single-side thickness tilt amount.

[0137] Then obtain the plastic coefficient of the rolled piece Q and the stiffness of the rolling mill K , and calculate the deformation coefficient according to the plastic coefficient of the rolled piece and the stiffness of the rolling mill. Wherein, the deformation coefficient is 1 plus the ratio of the plastic coefficient of the rolled piece to the stiffness of the rolling mill. And by adding the deformation coefficient to the fifth functional relationship, the mechanism model is generated.

[0138] That is, the single-side roll gap tilt adjustment amount of the roll body L 1 is:

[0139] (Formula 15);

[0140] Wherein, L 1 is the single-side roll gap tilt adjustment amount of the roll body; is the thickness of the edge of the rolled piece on the first side; h is the thickness of the edge of the rolled piece on the second side; L r is the horizontal distance between the left and right sides of the rolling mill; W is the width of the rolled piece; Lr is the horizontal distance on the left and right sides of the rolling mill; Q is the plastic coefficient of the rolled piece; K is the stiffness of the rolling mill.

[0141] It can be seen that through the method shown in the above embodiments, the data processing device can derive the relationship between the speed difference on both sides of the steel plate and the transverse displacement at the far end of the sickle bend according to the speeds on both sides of the steel plate at the outlet side of the rolling mill and the transverse displacement at the far end of the sickle bend. That is, the above formula 7. The data processing device can also use the principle that the volume of the rolled piece in the deformation zone remains unchanged to derive the relationship between the amount of roll gap inclination to be adjusted on one side of the roll and the transverse displacement at the far end. That is, after substituting the above formula 7 into formula 9 and then substituting the obtained third functional relationship into the above formula 15, the relationship between the roll gap inclination and the transverse displacement at the far end can be obtained.

[0142] S103. Calculate the amount of roll gap inclination adjustment on one side of the roll body according to the mechanism model and the transverse displacement at the far end;

[0143] After calling the mechanism model, the data processing device can calculate the amount of roll gap inclination adjustment on one side of the roll body based on the transverse displacement at the far end and the mechanism model (the functional relationship between the roll gap inclination and the transverse displacement at the far end). The mechanism model can directly incorporate the functional relationship between the roll gap inclination and the transverse displacement at the far end. Thus, after the data processing device obtains the transverse displacement at the far end, it inputs the transverse displacement at the far end into the mechanism model to replace the transverse displacement variable in the functional relationship L t and calculates the amount of roll gap inclination adjustment on one side of the roll body based on the functional relationship L 1.

[0144] In some embodiments, multiple functional relationships can also be integrated step by step in the mechanism model. Then, after calling the mechanism model, the data processing device can perform data calculations in sequence according to multiple functional relationships. That is, when the data processing device calculates the amount of roll gap inclination adjustment on one side of the roll body according to the mechanism model and the transverse displacement at the far end, it first extracts the step-by-step functional relationship from the mechanism model, where the step-by-step functional relationship includes the expression of the speed difference on both sides, the third functional relationship, and the expression of the amount of roll gap inclination adjustment on one side of the roll body. Then, it calculates the speed difference on both sides according to the transverse displacement at the far end and the expression of the speed difference on both sides, and calculates the thickness of the first side according to the speed difference on both sides and the third functional relationship. Then, it calculates the amount of roll gap inclination adjustment on one side of the roll body according to the thickness of the first side and the expression of the amount of roll gap inclination adjustment on one side of the roll body.

[0145] For example, the mechanism model includes three functional relationships corresponding to formula 7, formula 9, and formula 15. Then, after the data processing device obtains the transverse displacement at the far end, it can first substitute the transverse displacement at the far end into formula 7 to calculate the speed difference Δ on both sides through formula 7 VThen, substitute the calculated speed difference on both sides into Formula 9 to calculate the thickness of the first side through Formula 9. Then, substitute the calculated thickness of the first side into Formula 15 to calculate the amount of roll gap inclination adjustment required for one side of the roll body through Formula 15. L 1.

[0146] S104. Generate an adjustment instruction based on the amount of roll gap inclination adjustment, and send the adjustment instruction to the roll gap adjustment mechanism of the rolling mill.

[0147] After calculating the amount of roll gap inclination adjustment, the data processing device can generate an adjustment instruction based on the amount of roll gap inclination adjustment and send the adjustment instruction to the roll gap adjustment mechanism of the rolling mill. Among them, the adjustment instruction is used to control the roll gap adjustment mechanism of the rolling mill to generate an adjustment action, thereby adjusting the width of the roll gap of the rolling mill so that the speed of the second side V 2 and the speed of the first side V 1 are equal, improving the phenomenon of camber.

[0148] In order to adjust the width of the roll gap, in some embodiments, when the data processing device generates an adjustment instruction based on the amount of roll gap inclination adjustment, it can first obtain the current operating parameters of the roll gap adjustment mechanism. Among them, the roll gap adjustment mechanism includes a first adjustment component and a second adjustment component. The first adjustment component is used to adjust the width of the roll gap on the first side; the second adjustment component is used to adjust the width of the roll gap on the second side.

[0149] Then, calculate the actual adjustment distance according to the current operating parameters and the amount of roll gap inclination adjustment, and encapsulate the actual adjustment distance into the adjustment instruction. Among them, the actual adjustment distance includes a first distance and a second distance; the first distance is used to represent the adjustment amount of the roll gap width on the first side; the second distance is used for the adjustment amount of the roll gap width on the second side.

[0150] For example, the control of the camber phenomenon during the rolling process of a sheet metal workpiece can be achieved by the hydraulic cylinder of the roll gap adjustment mechanism of the rolling mill performing an adjustment action and correcting the function by changing the roll gaps on both sides. According to the mechanism model shown in the above embodiments, when a lateral displacement of t size is detected at the distal end within Δ L t time, two adjustment instructions can be generated, that is, MI l acting on the left hydraulic cylinder and the adjustment instruction MI r acting on the right hydraulic cylinder. Based on the generated adjustment instructions, the inclination of the roll gaps on both sides of the rolling mill can be adjusted respectively through the hydraulic oil columns to achieve the correction of camber, that is, the hydraulic cylinder on the side where the sheet metal workpiece is bent reduces the roll gap L 1, and the hydraulic cylinder on the other side raises the roll gap L1. It can theoretically ensure the straightness of the steel plate during subsequent rolling and alleviate the sickle bending phenomenon.

[0151] By applying the technical solutions of the above-described embodiments, the plate camber control method based on remote lateral shift detection provided in the above-described embodiments can analyze the speed difference and camber amount of the steel plate on the exit side of the plate during production, and derive the relationship between the speed difference and lateral shift of the steel plate on the exit side of the rolling mill based on the speed and lateral shift of the steel plate. Furthermore, utilizing the principle that the volume of the steel plate within the deformation zone remains constant, the roll gap tilt adjustment amount on one side of the roll is calculated. By calculating the roll gap tilt adjustment amount and performing roll gap adjustment, the problem of poor camber control of the plate can be addressed, and camber can be automatically corrected and adjusted to improve the product quality and yield rate of the plate.

[0152] Considering the simplified conditions and calculation error issues in the derivation process of the above relationship, an integral controller can also be used to eliminate the cumulative deviation during the production process. That is, in some embodiments, as a refinement and expansion of the specific implementation of the above embodiment, in order to fully explain the specific implementation process of this embodiment, some embodiments of this application also provide a plate sickle control method based on remote lateral displacement detection, such as Figure 8 As shown, the method includes:

[0153] S201, obtaining detection deviation;

[0154] S202, sending the detection deviation to an integral controller;

[0155] S203, setting the integral time of the integral controller;

[0156] S204 , correcting the roll gap tilt adjustment amount according to the output signal of the integral controller.

[0157] The integral controller is used to assist in performing camber correction adjustment on the plate rolled product. An integral controller is a controller that adjusts the system output by accumulating errors. The integral controller can be used to eliminate steady-state errors, i.e., the persistent deviation between the output value and the set value after the system reaches a steady state. For example, the output of the integral controller is proportional to the integral of the error, i.e., the relationship between the output of the integral controller and the error is:

[0158] (Formula 16);

[0159] in, u ( t ) is the output of the controller, K i is the integral gain, e ( τ ) is the error between the set value and the actual value.

[0160] The integral controller can monitor the error and continuously accumulate the error. Due to the existence of the integral term, the output of the controller will continuously increase until the error is zero. Through the memory mechanism, the integral controller can compensate for the steady-state error when proportional control alone is insufficient to eliminate the error. Therefore, by reasonably setting the integral gain and adopting appropriate control strategies, the integral controller can effectively eliminate the accumulated deviation and improve the control accuracy and stability of the system.

[0161] To eliminate the accumulated deviation, the data processing device can set the set value of the integral controller to zero for the distal transverse displacement within a preset detection period; the feedback value of the integral controller is the distal transverse displacement, and the integral time of the integral controller is set to ensure the speed of adjusting the deviation.

[0162] As Figure 9 shown, by detecting the distal transverse displacement L t , the set value of the roll gap inclination for controlling the camber can be calculated, that is, the amount of roll gap inclination that needs to be adjusted on one side of the roll body shown in the above embodiment L 1. And the detected deviation is sent into the integral controller to assist in the camber correction adjustment. The set value of the integral controller is Δ t no distal transverse displacement occurs within the time, that is, the ideal value is 0, and the feedback value is the distal transverse displacement L t , by setting the integral time to ensure the speed of adjusting the deviation, ensuring dynamic elimination of the accumulated deviation in the control of camber during the production process, and ensuring the flatness of the subsequent rolled sheet.

[0163] In some embodiments, as a specific implementation of the method for controlling the camber of a sheet based on distal transverse displacement detection in the above embodiment, some embodiments of the present application further provide a system for controlling the camber of a sheet based on distal transverse displacement detection. As Figure 10 shown, the system includes a rolling mill and a data processing device. The rolling mill includes a roll gap adjustment mechanism; the roll gap adjustment mechanism is connected to the data processing device, and the data processing device includes:

[0164] An acquisition module for acquiring the distal transverse displacement of the sheet during rolling within a preset detection period;

[0165] A model calling module for calling a mechanism model, where the mechanism model is used to represent the functional relationship between the amount of roll gap inclination adjustment on one side of the roll body and the distal transverse displacement; the mechanism model is generated based on the distal transverse displacement, combined with the transverse force arm, rolling width of the sheet, and the preset detection period;

[0166] A calculation module, configured to calculate the roll gap inclination adjustment amount on one side of the roll body according to the mechanism model and the distal transverse displacement amount;

[0167] An instruction generation module, configured to generate an adjustment instruction based on the roll gap inclination adjustment amount, and send the adjustment instruction to the roll gap adjustment mechanism of the rolling mill.

[0168] It should be noted that for other corresponding descriptions of each functional unit involved in the sheet camber control system based on distal transverse displacement detection provided in the embodiments of the present application, reference can be made to the corresponding descriptions in the sheet camber control method based on distal transverse displacement detection provided in the above embodiments, which will not be elaborated here.

[0169] By applying the technical solutions of the above embodiments, the embodiments of the present application provide a sheet camber control system based on distal transverse displacement detection. The data processing device in the system can first obtain the distal transverse displacement amount of the sheet workpiece during rolling within a preset detection period. Then, it calls the mechanism model and calculates the roll gap inclination adjustment amount on one side of the roll body according to the mechanism model and the distal transverse displacement amount. Thus, an adjustment instruction is generated based on the roll gap inclination adjustment amount, and the adjustment instruction is sent to the roll gap adjustment mechanism of the rolling mill. Among them, the mechanism model is generated based on the distal transverse displacement amount, combined with the transverse displacement lever arm, rolling width, and preset detection period of the sheet workpiece. The system can analyze the relationship between the speed difference on both sides of the sheet workpiece outlet and the camber bending amount, and deduce the roll gap inclination amount that needs to be adjusted for the camber of the outlet sheet workpiece, so as to control the camber phenomenon of the sheet workpiece and solve the problem of low accuracy value caused by the camber phenomenon of the sheet.

[0170] The embodiments of the present application further provide a computer device, which can specifically be a personal computer, a server, a network device, etc. The computer device includes a bus, a processor, a memory, and a communication interface, and may further include an input / output interface and a display device. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store location information. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the steps in the method embodiments are implemented.

[0171] Those skilled in the art can understand that the structure of the above computer device is only a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components, or combine some components, or have different component arrangements.

[0172] In one embodiment, a computer-readable storage medium is further provided. The computer-readable storage medium may be non-volatile or volatile, and a computer program is stored thereon. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0173] In one embodiment, a computer program product is further provided, including a computer program. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0174] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0175] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it may include the processes of the above method embodiments.

[0176] Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application may include at least one of non-volatile and volatile memories. Non-volatile memories may include read-only memory (ROM), magnetic tapes, floppy disks, flash memories, optical memories, high-density embedded non-volatile memories, resistive random access memories (ReRAM), magnetoresistive random access memories (MRAM), ferroelectric random access memories (FRAM), phase change memories (PCM), graphene memories, etc.

[0177] Volatile memories may include random access memory (RAM) or external cache memories, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0178] In each of the embodiments provided by the present application, the database involved may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., without limitation. In each of the embodiments provided by the present application, the processor involved may be a general-purpose processor, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without limitation.

[0179] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification.

[0180] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for controlling the camber of a plate based on remote transverse displacement detection, characterized in that, The method comprises: Obtaining the far-end lateral displacement of the plate rolled piece during the rolling process within a preset detection period; Setting speed variables on both sides, wherein the speed variables on both sides include a first side speed and a second side speed of the plate rolled piece at a rolling discharge position; Calculating a speed difference between the two sides according to the speed variables on the two sides, wherein the speed difference between the two sides is equal to the difference between the first side speed and the second side speed; Obtain the rolling width and the theoretical discharge length within the preset detection cycle; Calculating the transverse force arm of the plate rolled piece according to the rolling width and the theoretical discharge length; Based on the distal end lateral displacement, in combination with the lateral displacement force arm, the rolling width, and the preset detection period, a mechanism model is generated, including: constructing a distal end velocity variable and a rotation angle variable, wherein the distal end velocity variable is used to characterize the linear velocity of the distal end midpoint of the plate rolled piece; the rotation angle variable is used to characterize the deflection angle of the distal end midpoint of the plate rolled piece under the sickle camber phenomenon; based on the principle that the angular velocity of each position on the plate rolled piece is the same, determining a first functional relationship between the distal end velocity variable and the speed difference between the two sides; obtaining a second functional relationship between the rotation angle variable and the distal end lateral displacement; and jointly establishing the first functional relationship and the second functional relationship based on the speed difference between the two sides to generate the mechanism model; Invoking a mechanism model, wherein the mechanism model is used to characterize a functional relationship between a roll gap tilt adjustment amount on one side of the roll body and the distal end lateral displacement; Calculating the roll gap tilt adjustment amount on one side of the roller body according to the mechanism model and the distal end lateral displacement; An adjustment instruction is generated based on the roll gap inclination adjustment amount, and the adjustment instruction is sent to a roll gap adjustment mechanism of the rolling mill.

2. The method according to claim 1, wherein The first functional relationship and the second functional relationship are combined based on the velocity difference between the two sides to generate the mechanism model, including: Constructing thickness variables, the thickness variables including a first thickness variable and a second thickness variable, the first thickness variable being used to characterize the thickness of the plate rolled piece on the first side, and the second thickness variable being used to characterize the thickness of the plate rolled piece on the second side; Based on the principle of constant rolling volume, a third functional relationship between the thickness variable and the speed variables on both sides is established; Determining a fourth functional relationship between the first thickness variable and the second thickness variable based on the third functional relationship, wherein the fourth functional relationship includes a thickness coefficient, and the thickness coefficient is 1 plus a ratio of the velocity difference between the two sides to the first side velocity; The fourth functional relationship is substituted into the thickness inclination adjustment relationship to generate the mechanism model. The thickness inclination relationship is determined according to the thickness difference, the rolling mill width and the rolled piece width; the thickness difference is equal to the difference between the first thickness variable and the second thickness variable.

3. The method according to claim 2, wherein Substituting the fourth functional relationship into the thickness tilt adjustment relationship to generate the mechanism model includes: Get the mill width; Calculating a tilt coefficient based on the rolling mill width and the workpiece width, wherein the tilt coefficient is 1 / 2 of the ratio of the rolling mill width to the workpiece width; Constructing a thickness difference variable, wherein the thickness difference variable is used to represent the difference between the first thickness variable and the second thickness variable; Construct a fifth functional relationship between the thickness tilt adjustment amount on one side of the roll body and the thickness difference variable based on the tilt amount coefficient.

4. The method according to claim 3, characterized in that, The method further includes: Obtain the plastic coefficient of the rolled piece and the stiffness of the rolling mill; Calculate a deformation coefficient according to the plastic coefficient of the rolled piece and the stiffness of the rolling mill, where the deformation coefficient is 1 plus the ratio of the plastic coefficient of the rolled piece to the stiffness of the rolling mill; Add the deformation coefficient to the fifth functional relationship to generate the mechanism model.

5. The method according to claim 3, characterized in that, The method further includes: Obtain the specification parameters and rolling process parameters of the rolling mill, where the specification parameters include the radius of the rolls of the rolling mill; the rolling process parameters include the thickness before rolling and the thickness after rolling of the sheet rolled piece; Create a rolling angle variable, where the rolling angle variable includes a bite angle and a neutral angle; According to the geometric shape characteristics of the rolling deformation zone, establish expressions for the bite angle and the neutral angle.

6. The method according to claim 1, characterized in that, Generate an adjustment instruction based on the roll gap tilt adjustment amount, including: Obtain the current operating parameters of the roll gap adjustment mechanism, where the roll gap adjustment mechanism includes a first adjustment component and a second adjustment component, and the first adjustment component is used to adjust the width of the roll gap on the first side; the second adjustment component is used to adjust the width of the roll gap on the second side; Calculate the actual adjustment distance according to the current operating parameters and the roll gap tilt adjustment amount, where the actual adjustment distance includes a first distance and a second distance; the first distance is used to represent the adjustment amount of the width of the roll gap on the first side; the second distance is used for the adjustment amount of the width of the roll gap on the second side; Package the actual adjustment distance into the adjustment instruction.

7. The method according to claim 1, characterized in that, The method further includes: Obtain a detection deviation; Send the detection deviation to an integral controller, where the integral controller is used to assist in performing camber correction adjustment on the sheet rolled piece; the set value of the integral controller is that the distal transverse displacement is equal to 0 within a preset detection period; the feedback value of the integral controller is the distal transverse displacement; Set the integral time of the integral controller; Correct the roll gap tilt adjustment amount according to the output signal of the integral controller.

8. A sheet camber control system based on remote transverse displacement detection, characterized in that, For implementing the method for controlling the camber of a sheet based on distal transverse displacement detection as claimed in claim 1; the system includes a rolling mill and a data processing device, where the rolling mill includes a roll gap adjustment mechanism; the roll gap adjustment mechanism is connected to the data processing device, and the data processing device includes: An acquisition module for acquiring the distal transverse displacement of the sheet rolled piece during rolling within a preset detection period; A model call module for calling a mechanism model, where the mechanism model is used to characterize the functional relationship between the roll gap tilt adjustment amount on one side of the roll body and the distal transverse displacement; the mechanism model is generated based on the distal transverse displacement, in combination with the transverse force arm, rolling width of the sheet rolled piece, and the preset detection period; A calculation module for calculating the roll gap tilt adjustment amount on one side of the roll body according to the mechanism model and the distal transverse displacement; An instruction generation module for generating an adjustment instruction based on the roll gap tilt adjustment amount and sending the adjustment instruction to the roll gap adjustment mechanism of the rolling mill.

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