Control method and device for improving flying shear cutting precision, medium and electronic equipment

Abstract

The application relates to the technical field of hot continuous rolling, and discloses a control method and device for improving flying shear shearing precision, a medium and electronic equipment. The method comprises the following steps: acquiring the detection speed of an intermediate blank, the intermediate blank being a strip steel rolled by a rough rolling mill; correcting the detection speed of the intermediate blank to determine the actual speed of the intermediate blank; acquiring the shearing amount of the intermediate blank, the shearing amount being the distance between the shearing start position and the shearing end position of the intermediate blank; correcting the shearing amount of the intermediate blank to determine the corrected shearing amount of the intermediate blank; and controlling the flying shear to shear the intermediate blank based on the actual speed and the corrected shearing amount. The technical scheme disclosed by the application can improve the shearing precision of the flying shear in shearing the intermediate blank in the hot continuous rolling production line, reduce the problem of inaccurate shearing of the intermediate blank, and thus improve the rolling stability and the rolling yield to a certain extent.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hot continuous rolling, and discloses a control method and device for improving shearing precision of a flying shear, a medium and an electronic device. BACKGROUND

[0002] In a hot continuous rolling production process, the head shape of an intermediate blank is irregular, and in order to ensure rolling stability, a flying shear device before a finishing mill needs to cut off the head and tail. In order to take into account the needs of stability and yield, shearing precision is crucial. The tail shearing is often affected by factors such as inaccurate speed detection and deviation of a scanning type thermal detection unloading signal. Based on this, a method for improving shearing precision of a flying shear is proposed, which can improve the shearing precision of an intermediate blank in a hot continuous rolling production line, reduce the problem of inaccurate shearing of the intermediate blank, and thus improve the rolling stability and rolling yield to a certain extent. SUMMARY

[0003] The application relates to the technical field of hot continuous rolling, and discloses a control method and device for improving shearing precision of a flying shear, a medium and an electronic device. The shearing precision of an intermediate blank in a hot continuous rolling production line can be improved, and thus the rolling stability and rolling yield can be improved to a certain extent.

[0004] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0005] According to a first aspect of an embodiment of the present application, a control method for improving shearing precision of a flying shear is provided, and the method comprises the following steps: acquiring a detection speed of an intermediate blank, the intermediate blank being a strip steel rolled by a roughing mill; correcting the detection speed of the intermediate blank to determine an actual speed of the intermediate blank; acquiring a shearing amount of the intermediate blank, the shearing amount being a distance between a shearing start position and a shearing end position of the intermediate blank; correcting the shearing amount of the intermediate blank to determine a corrected shearing amount of the intermediate blank; and controlling the flying shear to shear the intermediate blank based on the actual speed and the corrected shearing amount.

[0006] In an embodiment of the present application, based on the foregoing scheme, the step of acquiring the detection speed of the intermediate blank comprises the following steps: acquiring a first speed of a pinch roll of a scale removal device, and taking the first speed as the detection speed of the intermediate blank, the scale removal device being arranged after the flying shear.

[0007] In an embodiment of the present application, based on the foregoing scheme, the first speed of the pinch roll of the finishing descaling device is obtained, comprising: obtaining a second speed of a first stand of a finishing mill, the finishing mill being arranged behind the finishing descaling device; obtaining an entry thickness and an exit thickness of the first stand of the finishing mill; determining the first speed of the pinch roll of the finishing descaling device based on the second speed, the entry thickness and the exit thickness.

[0008] In an embodiment of the present application, based on the foregoing scheme, the detection speed of the intermediate blank is corrected to determine the actual speed of the intermediate blank, comprising: obtaining an actual torque of the pinch roll of the finishing descaling device; determining a compensation coefficient of the detection speed of the intermediate blank based on the actual torque of the pinch roll; determining the actual speed of the intermediate blank based on the detection speed and the compensation coefficient.

[0009] In an embodiment of the present application, based on the foregoing scheme, the detection speed of the intermediate blank is determined based on the detection speed and the compensation coefficient, comprising: calculating a product of the detection speed and the compensation coefficient, and taking the product as a compensation speed; calculating a sum of the detection speed and the compensation speed as the actual speed of the intermediate blank.

[0010] In an embodiment of the present application, based on the foregoing scheme, the shear amount of the intermediate blank is corrected to determine the corrected shear amount of the intermediate blank, comprising: obtaining a rolling schedule of the intermediate blank; determining a strip type of the intermediate blank based on the rolling schedule of the intermediate blank; determining a compensation shear amount of the intermediate blank based on the strip type of the intermediate blank; determining the corrected shear amount of the intermediate blank based on the shear amount of the intermediate blank and the compensation shear amount.

[0011] In an embodiment of the present application, based on the foregoing scheme, the method further comprises: determining a shear start position of the intermediate blank by a detection device; determining a shear end position of the intermediate blank based on the corrected shear amount and the shear start position.

[0012] According to a second aspect of the embodiments of the present application, a control device for improving flying shear cutting precision is provided, the device comprising: a first obtaining unit configured to obtain a detection speed of an intermediate blank, the intermediate blank being a strip steel rolled by a rough rolling mill; a first determining unit configured to correct the detection speed of the intermediate blank to determine an actual speed of the intermediate blank; a second obtaining unit configured to obtain a shear amount of the intermediate blank, the shear amount being a distance between a shear start position and a shear end position of the intermediate blank; a second determining unit configured to correct the shear amount of the intermediate blank to determine a corrected shear amount of the intermediate blank; and a control unit configured to control a flying shear to cut the intermediate blank based on the actual speed and the corrected shear amount.

[0013] According to a third aspect of the embodiments of the present application, a computer readable storage medium is provided, and the computer readable storage medium stores at least one program code. The at least one program code is loaded and executed by a processor to implement the control method for improving the shearing precision of a flying shear according to any one of the above embodiments.

[0014] According to a fourth aspect of the embodiments of the present application, an electronic device is provided, and the electronic device comprises one or more processors and one or more memories. The one or more memories store at least one program code. The at least one program code is loaded and executed by the one or more processors to implement the control method for improving the shearing precision of a flying shear according to any one of the above embodiments.

[0015] In the technical solution provided in the present application, the detection speed of the intermediate blank is obtained, and the detection speed of the intermediate blank is corrected to determine the actual speed of the intermediate blank. The shearing amount of the intermediate blank is obtained, and the shearing amount of the intermediate blank is corrected to determine the corrected shearing amount of the intermediate blank. The cutting edge of the flying shear device is controlled to the set position. Based on the actual speed and the corrected shearing amount, the shearing speed of the cutting edge is adjusted. After the parameters of the flying shear device are adjusted, the flying shear device is controlled to shear the intermediate blank. The technical solution provided in the present application can improve the shearing precision of the intermediate blank in the hot continuous rolling production line, reduce the problem of inaccurate shearing of the intermediate blank, and thus improve the rolling stability and the rolling yield to a certain extent.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0018] Figure 1 A flow chart of the control method for improving the shearing precision of a flying shear in the embodiments of the present application is shown;

[0019] Figure 2 A block diagram of the control device for improving the shearing precision of a flying shear in the embodiments of the present application is shown;

[0020] Figure 3A structural diagram of a computer system of an electronic device suitable for implementing embodiments of the present application is shown. DETAILED DESCRIPTION

[0021] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0022] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0023] The flow charts shown in the drawings are merely examples and do not necessarily include all of the content and operations / steps, nor are they necessarily performed in the order described. For example, some operations / steps can be further broken down, and some operations / steps can be combined or partially combined, so the actual order of execution can be changed according to actual conditions.

[0024] The block diagrams shown in the drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0025] It should be noted that "multiple" referred to herein means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the objects thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described.

[0027] The implementation details of the technical solutions of the embodiments of the present application are described in detail as follows.

[0028] Figure 1 A flowchart of the control method for improving the shearing precision of a flying shear in the embodiments of the present application is shown.

[0029] As shown in Figure 1 , the control method for improving the shearing precision of a flying shear at least includes steps 110 to 190.

[0030] The steps 110 to 190 shown in Figure 1 will be described in detail as follows:

[0031] In step 110, the detection speed of an intermediate blank is obtained, the intermediate blank being a strip steel rolled by a rough rolling mill.

[0032] In the present application, the blank obtained by rolling a billet by a rough rolling mill is an intermediate blank, which needs to be descaled by a fine descaling device and sheared by a flying shear before entering a finish rolling mill for rolling.

[0033] With reference back to Figure 1 , in step 130, the detection speed of the intermediate blank is corrected to determine the actual speed of the intermediate blank.

[0034] In the present application, the detection speed of the intermediate blank may not match the actual speed of the intermediate blank, and the detection speed of the intermediate blank needs to be corrected to obtain the actual speed of the intermediate blank.

[0035] With reference back to Figure 1 , in step 150, the shearing amount of the intermediate blank is obtained, the shearing amount being the distance between the shearing start position and the shearing end position of the intermediate blank.

[0036] With reference back to Figure 1 , in step 170, the shearing amount of the intermediate blank is corrected to determine the corrected shearing amount of the intermediate blank.

[0037] In the present application, the signal transmission of the flying shear shearing is affected by the temperature of the tail of the intermediate blank, which causes the shearing position at the tail of the intermediate blank to be incorrect, so the shearing amount of the intermediate blank needs to be corrected to obtain the corrected shearing amount of the intermediate blank.

[0038] With reference back to Figure 1 , in step 190, based on the actual speed and the corrected shearing amount, the flying shear is controlled to shear the intermediate blank.

[0039] In the application, based on the actual speed and the corrected cutting amount, the shearing speed of the flying shear blade is adjusted, and after the parameters of the flying shear equipment are adjusted, the flying shear equipment is controlled to shear the intermediate blank.

[0040] In an embodiment of the application, the detection speed of the intermediate blank is obtained by obtaining a first speed of a pinch roll of a finishing descaling device, and taking the first speed as the detection speed of the intermediate blank, the finishing descaling device being arranged after the flying shear.

[0041] In the application, when the flying shear is used to shear the tail of the intermediate blank, the speed fed back by the pinch roll of the finishing descaling device is used as the speed of the tail of the intermediate blank, and the speed of the tail of the intermediate blank is the detection speed of the intermediate blank.

[0042] In an embodiment of the application, the first speed of the pinch roll of the finishing descaling device is obtained by obtaining a second speed of a first stand of a finishing mill arranged after the finishing descaling device, obtaining an entry thickness and an exit thickness of the first stand of the finishing mill, and determining the first speed of the pinch roll of the finishing descaling device based on the second speed, the entry thickness and the exit thickness.

[0043] In the application, the second speed of the first stand of the finishing mill is the exit speed of the first stand of the finishing mill, the first speed of the pinch roll of the finishing descaling device is the entry speed of the first stand of the finishing mill, the entry thickness is the thickness of the intermediate blank and can be calculated according to the roll gap and rolling force of the rough rolling mill, the exit thickness can be calculated according to the roll gap and rolling force of the first stand of the finishing mill, and the speed of the pinch roll of the finishing descaling device is calculated based on the exit speed, the entry thickness and the exit thickness of the first stand of the finishing mill, and the calculation formula is:

[0044]

[0045] wherein V2 is the first speed of the pinch roll, V1 is the exit speed of the first stand of the finishing mill, h1 is the exit thickness of the first stand of the finishing mill, and h2 is the entry thickness of the first stand of the finishing mill.

[0046] In an embodiment of the application, the detection speed of the intermediate blank is corrected to determine the actual speed of the intermediate blank by obtaining an actual torque of the pinch roll of the finishing descaling device, determining a compensation coefficient of the detection speed of the intermediate blank based on the actual torque of the pinch roll, and determining the actual speed of the intermediate blank based on the detection speed and the compensation coefficient.

[0047] In the present application, when the fine descaling pinch roll setting speed is set too large, the phenomenon of slipping occurs, and when the fine descaling pinch roll setting speed is set too small, the phenomenon of dragging occurs between the fine rolling mill, resulting in the speed feedback of the fine descaling pinch roll not matching the actual speed of the intermediate blank. The actual torque feedback of the pinch roll motor of the fine descaling device is obtained, the current state is judged according to the torque feedback of the pinch roll motor of the fine descaling device, the compensation coefficient of the detected speed of the intermediate blank is determined, and the actual speed of the intermediate blank is determined based on the detected speed and the compensation coefficient.

[0048] In the present application, different intermediate blank speed compensation coefficients correspond to different actual torques, wherein the value of the actual torque refers to the percentage of the rated torque of the motor, and the positive or negative sign before the value of the actual torque indicates whether the motor is output or is dragged. When the actual torque is less than or equal to -50%, the corresponding compensation coefficient is -0.005; when the actual torque is greater than -50% and less than -25%, the corresponding compensation coefficient is -0.005 to -0.002; when the actual torque is equal to -25%, the corresponding compensation coefficient is -0.002; when the actual torque is greater than -25% and less than -10%, the corresponding compensation coefficient is -0.002 to 0; when the actual torque is greater than or equal to -10% and less than or equal to 10%, the corresponding compensation coefficient is 0; when the actual torque is greater than 10% and less than 25%, the corresponding compensation coefficient is 0 to 0.002; when the actual torque is equal to 25%, the corresponding compensation coefficient is 0.002; when the actual torque is greater than 25% and less than 50%, the corresponding compensation coefficient is 0.002 to 0.005; when the actual torque is greater than or equal to 50% of the rated torque, the corresponding compensation coefficient is 0.005. When the value of the actual torque is in the interval of -50% to -25% or -25% to -10% or 10% to 25% or 25% to 50%, the specific compensation coefficient corresponding thereto can be calculated according to a linear relationship.

[0049] In an embodiment of the present application, determining the detected speed of the intermediate blank based on the detected speed and the compensation coefficient comprises: calculating the product of the detected speed and the compensation coefficient, and taking the product as a compensation speed; calculating the sum of the detected speed and the compensation speed as the actual speed of the intermediate blank.

[0050] In the present application, the actual speed of the intermediate blank is calculated based on the detected speed and the compensation coefficient, and the calculation formula is:

[0051] V a = V b ·(1+δ),

[0052] wherein V aV is the actual speed of the intermediate blank b V is the actual speed of the intermediate blank

[0053] In an embodiment of the present application, the correction of the shearing amount of the intermediate blank to determine the corrected shearing amount of the intermediate blank includes: obtaining the rolling schedule of the intermediate blank; determining the strip steel type of the intermediate blank based on the rolling schedule of the intermediate blank; determining the compensation shearing amount of the intermediate blank based on the strip steel type of the intermediate blank; and determining the corrected shearing amount of the intermediate blank based on the shearing amount of the intermediate blank and the compensation shearing amount.

[0054] In the present application, the accuracy of the tail shearing of the flying shear is affected by the accuracy of the speed and the shearing starting position, that is, the accuracy of the front scanning thermal detection unloading signal of the flying shear, and the detection accuracy is affected by the temperature of the tail of the intermediate blank. The higher the temperature, the more the unloading signal lags behind, and the lower the temperature, the more the unloading signal is advanced.

[0055] In the present application, the strip steel can be divided into high-temperature steel, low-temperature steel and ordinary steel according to the rolling schedule of the strip steel. When rolling high-temperature steel, the unloading signal lags behind, and the tail shearing amount is too small, so the shearing amount is automatically increased by 30 mm; when rolling low-temperature steel, the unloading signal is advanced, and the tail shearing amount is too large, so the shearing amount is automatically reduced by 30 mm; when rolling ordinary steel, the shearing amount is not corrected.

[0056] In an embodiment of the present application, the method further includes: determining the shearing starting position of the intermediate blank by a detection device; and determining the shearing end position of the intermediate blank based on the corrected shearing amount and the shearing starting position.

[0057] In the present application, the detection device can be a scanning thermal detector, which detects the shearing starting position of the intermediate blank, and determines the shearing end position of the intermediate blank based on the corrected shearing amount, determines the shearing speed of the flying shear based on the actual speed of the intermediate blank, and controls the flying shear to shear according to the shearing speed of the flying shear and the shearing end position of the intermediate blank.

[0058] In one or more technical solutions provided in the embodiments of the present application, at least the following technical effects or advantages are achieved:

[0059] The control method for improving the shearing accuracy of the flying shear mentioned in the technical solutions provided in the present application corrects the speed and shearing length of the intermediate blank, thereby improving the shearing accuracy when shearing the tail of the hot continuous rolling production line.

[0060] The control method for improving the shearing accuracy of the flying shear mentioned in the technical solutions provided in the present application can reduce the problem of inaccurate shearing of the intermediate blank, thereby improving the rolling stability and rolling yield to a certain extent.

[0061] The device embodiment of the present application is introduced below, which can be used to execute the control method for improving the cutting accuracy of flying shear in the first aspect of the above-mentioned embodiments of the present application. For details not disclosed in the device embodiment of the present application, please refer to the embodiments of the control method for improving the cutting accuracy of flying shear in the first aspect of the present application.

[0062] Figure 2 A block diagram of the control device for improving the cutting accuracy of flying shear in the embodiments of the present application is shown.

[0063] As shown in Figure 2 The control device 200 for improving the cutting accuracy of flying shear in the embodiments of the present application includes a first acquisition unit 201, a first determination unit 202, a second acquisition unit 203, a second determination unit 204 and a control unit 205.

[0064] The first acquisition unit 201 is configured to acquire the detection speed of the intermediate blank, the intermediate blank being a strip steel rolled by a rough rolling mill; the first determination unit 202 is configured to correct the detection speed of the intermediate blank to determine the actual speed of the intermediate blank; the second acquisition unit 203 is configured to acquire the cutting amount of the intermediate blank, the cutting amount being the distance between the cutting start position and the cutting end position of the intermediate blank; the second determination unit 204 is configured to correct the cutting amount of the intermediate blank to determine the corrected cutting amount of the intermediate blank; and the control unit 205 is configured to control the flying shear to cut based on the actual speed and the corrected cutting amount.

[0065] In some embodiments of the present application, based on the foregoing scheme, the first acquisition unit 201 is configured to acquire the first speed of the pinch roll of the fine descaling device, and take the first speed as the detection speed of the intermediate blank, the fine descaling device being arranged after the flying shear.

[0066] In some embodiments of the present application, based on the foregoing scheme, the first acquisition unit 201 is further configured to acquire the second speed of the first rack of the finishing mill, the finishing mill being arranged after the fine descaling device; acquire the entry thickness and the exit thickness of the first rack of the finishing mill; and determine the first speed of the pinch roll of the fine descaling device based on the second speed, the entry thickness and the exit thickness.

[0067] In some embodiments of the present application, based on the foregoing scheme, the first determination unit 202 is configured to acquire the actual torque of the pinch roll of the fine descaling device; determine the compensation coefficient of the detection speed of the intermediate blank based on the actual torque of the pinch roll; and determine the actual speed of the intermediate blank based on the detection speed and the compensation coefficient.

[0068] In some embodiments of the present application, based on the foregoing scheme, the first determining unit 202 is further configured to: calculate the product of the detected speed and the compensation coefficient, and take the product as a compensation speed; and calculate the sum of the detected speed and the compensation speed as the actual speed of the intermediate blank.

[0069] In some embodiments of the present application, based on the foregoing scheme, the second determining unit 204 is configured to: acquire the rolling schedule of the intermediate blank; determine the strip type of the intermediate blank based on the rolling schedule of the intermediate blank; determine the compensation cutting amount of the intermediate blank based on the strip type of the intermediate blank; and determine the corrected cutting amount of the intermediate blank based on the cutting amount of the intermediate blank and the compensation cutting amount.

[0070] In some embodiments of the present application, based on the foregoing scheme, the device further comprises a third determining unit configured to determine the cutting start position of the intermediate blank by a detection device; and determine the cutting end position of the intermediate blank based on the corrected cutting amount and the cutting start position.

[0071] The present application also provides a computer program product, which comprises computer instructions stored in a computer readable storage medium and adapted to be read and executed by a processor to enable a computer device having the processor to perform the control method for improving flying shear cutting precision as described in the above embodiments.

[0072] The present application also provides a computer readable medium, which can be included in an electronic device or exist separately without being assembled into an electronic device. The computer readable storage medium stores at least one program code, which is loaded and executed by a processor to implement the control method for improving flying shear cutting precision as described in the above embodiments.

[0073] The present application also provides an electronic device, which comprises one or more processors and one or more memories, and the one or more memories store at least one program code, which is loaded and executed by the one or more processors to implement the control method for improving flying shear cutting precision as described in any of the above embodiments.

[0074] Figure 3 A structural schematic diagram of a computer system of an electronic device suitable for implementing embodiments of the present application is shown.

[0075] It should be noted that, Figure 3 The computer system 300 of the electronic device shown is only an example and should not impose any limitation on the functions and use range of the embodiments of the present application.

[0076] AsFigure 3 As shown, the computer system 300 includes a central processing unit (CPU) 301 which can perform various appropriate actions and processes in accordance with a program stored in a read-only memory (ROM) 302 or a program loaded from the storage section 308 into a random access memory (RAM) 303, such as performing the methods described in the above embodiments. In the RAM 303, various programs and data required for the operation of the system are also stored. The CPU 301, the ROM 302, and the RAM 303 are connected to each other through a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0077] Connected to the I / O interface 305 are an input section 306 including a keyboard, a mouse, etc.; an output section 307 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as necessary. A removable recording medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 310 as necessary, so that a computer program read therefrom is installed into the storage section 308 as necessary.

[0078] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for performing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 309, and / or installed from the removable recording medium 311. When the computer program is executed by the central processing unit (CPU) 301, various functions defined in the system of the present application are performed.

[0079] It should be noted that the computer-readable medium in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples of the computer-readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present application, the computer-readable signal medium can include a data signal carrying a computer-readable program code in a baseband or as a part of a carrier wave. Such a propagated data signal can take various forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, which can send, transmit, propagate or transport a program for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination thereof.

[0080] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In the flowcharts or block diagrams, each block can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders than that shown in the drawings. For example, two blocks that are shown in succession can actually be executed substantially in parallel, and sometimes in reverse order, depending on the involved functions. It should also be noted that each block in the block diagrams or flowcharts, and the combination of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0081] The units described in the embodiments of the present application can be implemented by software, or by hardware, or by a combination of software and hardware. The units described can also be located in a single processor. In some cases, the names of the units do not limit the units themselves.

[0082] It should be noted that although several modules or units of the device for action execution are mentioned in the above detailed description, such a division is not mandatory. Indeed, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into several modules or units embodied.

[0083] From the above description of the embodiments, those skilled in the art will readily appreciate that the example embodiments described herein can be implemented by software and / or by hardware coupled with software. Accordingly, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, or the like) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to perform the methods according to the embodiments of the present application.

[0084] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such

[0085] Furthermore, the above-described diagrams are merely schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not intended for limiting purposes. It will be readily appreciated that the processes shown in the above-described diagrams do not indicate or limit the time sequence of the processes. In addition, it will also be readily appreciated that the processes can be executed synchronously or asynchronously, for example, in multiple modules.

[0086] It should be understood that the present application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present application. The scope of the present application is limited only by the appended claims.

Claims

1. A control method for improving the shearing accuracy of a flying shear, characterized by, The method comprises: obtaining a detected speed of an intermediate blank, the intermediate blank being a strip steel rolled by a rough rolling mill; correcting the detected speed of the intermediate blank to determine an actual speed of the intermediate blank; obtaining a shearing amount of the intermediate blank, the shearing amount being a distance between a shearing start position and a shearing end position of the intermediate blank; correcting the shearing amount of the intermediate blank to determine a corrected shearing amount of the intermediate blank; controlling a flying shear to shear the intermediate blank based on the actual speed and the corrected shearing amount; the obtaining of the detected speed of the intermediate blank comprises: obtaining a first speed of a pinch roll of a fine descaling device, the fine descaling device being arranged after the flying shear, and taking the first speed as the detected speed of the intermediate blank; the obtaining of the first speed of the pinch roll of the fine descaling device comprises: obtaining a second speed of a first stand of a finishing rolling mill, the finishing rolling mill being arranged after the fine descaling device; obtaining an entry thickness and an exit thickness of the first stand of the finishing rolling mill; determining the first speed of the pinch roll of the fine descaling device based on the second speed, the entry thickness and the exit thickness; the correcting of the detected speed of the intermediate blank to determine the actual speed of the intermediate blank comprises: obtaining an actual torque of the pinch roll of the fine descaling device; determining a compensation coefficient of the detected speed of the intermediate blank based on the actual torque of the pinch roll; determining the actual speed of the intermediate blank based on the detected speed and the compensation coefficient; the determining of the detected speed of the intermediate blank based on the detected speed and the compensation coefficient comprises: calculating a product of the detected speed and the compensation coefficient, and taking the product as a compensation speed; calculating a sum of the detected speed and the compensation speed as the actual speed of the intermediate blank; the correcting of the shearing amount of the intermediate blank to determine the corrected shearing amount of the intermediate blank comprises: obtaining a rolling schedule of the intermediate blank; determining a strip steel type of the intermediate blank based on the rolling schedule of the intermediate blank; determining a compensation shearing amount of the intermediate blank based on the strip steel type of the intermediate blank; determining the corrected shearing amount of the intermediate blank based on the shearing amount of the intermediate blank and the compensation shearing amount.

2. The method of claim 1, wherein, The method further comprises: determining the shearing start position of the intermediate blank by a detection device; determining the shearing end position of the intermediate blank based on the corrected shearing amount and the shearing start position.

3. A computer-readable storage medium, characterized in that, The computer readable storage medium stores at least one program code, the at least one program code is loaded and executed by the processor to implement the control method for improving shearing accuracy of a flying shear as claimed in claim 1 or 2.

4. An electronic device, comprising: The electronic device comprises one or more processors and one or more memories, the one or more memories store at least one program code, the at least one program code is loaded and executed by the one or more processors to implement the control method for improving shearing accuracy of a flying shear as claimed in claim 1 or 2.

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