A control method for rolling equipment

Abstract

An embodiment of the present application provides a control method for rolling equipment, the rolling equipment comprising a rolling stand and an exit pinch roller, the exit pinch roller being disposed behind the rolling exit of the rolling stand and configured to compress the strip during the exit tail swinging process of the rolling stand. The method comprises: upon triggering an exit tail swinging signal for the rolling stand, controlling the exit pinch roller to compress the strip to maintain the tension of the strip at a set tension; upon triggering an unwind tail swinging signal for the rolling stand, obtaining the actual rolling force and entrance tension ratio of the rolling stand; determining a roll gap compensation amount of the rolling stand based on the actual rolling force and the entrance tension ratio; and adjusting the roll gap of the rolling stand according to the roll gap compensation amount. The technical solution provided by the present application can, to a certain extent, effectively suppress the strip tail swinging phenomenon during the rolling process.

Description

Technical Field

[0001] The present application relates to the field of rolling technology, and in particular, mainly to a control method for rolling equipment. Background Art

[0002] Currently, for non-continuous single-stand mills, when the strip tail leaves the uncoiler, it is in a tension-free state, which can easily lead to problems such as deviation and folding during the rolling process. In addition, after the final rolling pass, the strip is also prone to tail swinging after leaving the rolling stand.

[0003] Therefore, those skilled in the art are in urgent need of a control method for rolling equipment that can effectively suppress the tail swinging phenomenon of the strip during the rolling process. Summary of the Invention

[0004] The embodiments of the present application provide a control method for rolling equipment, which can effectively suppress the tail swinging phenomenon of the strip during the rolling process.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0006] According to one aspect of the present application, a control method for a rolling equipment is provided, wherein the rolling equipment includes a rolling stand and an exit pinch roller, wherein the exit pinch roller is arranged behind the rolling exit of the rolling stand and is used to press the strip during the exit tail swinging process of the rolling stand, wherein the method includes: when an exit tail swinging signal for the rolling stand is triggered, controlling the exit pinch roller to press the strip to maintain the tension of the strip at a set tension; when an uncoiling tail swinging signal for the rolling stand is triggered, obtaining the actual rolling force and entrance tension ratio of the rolling stand; determining the roll gap compensation amount of the rolling stand based on the actual rolling force and the entrance tension ratio; and adjusting the roll gap of the rolling stand according to the roll gap compensation amount.

[0007] In some embodiments of the present application, the triggering of the exit tail-swing signal for the rolling stand includes: continuously obtaining the exit strip tension of the rolling stand, and if the tension drop rate of the exit strip tension within a preset time period is greater than 20%, triggering the exit tail-swing signal for the rolling stand.

[0008] In some embodiments of the present application, controlling the exit pinch roller to press the strip includes: real-time monitoring of the exit strip tension of the rolling mill; and adjusting the contact pressure of the upper strip pressing roller of the exit pinch roller in real time according to the exit strip tension and the PID control principle to press the strip.

[0009] In some embodiments of the present application, the triggering of the uncoiling tail-swinging signal for the rolling stand includes: continuously obtaining the entrance strip tension of the rolling stand, and if the tension drop rate of the entrance strip tension within a preset time period is greater than 20%, triggering the uncoiling tail-swinging signal for the rolling stand.

[0010] In some embodiments of the present application, determining the roll gap compensation amount of the rolling mill based on the actual rolling force and the entrance ratio includes: calculating the rolling force increment based on the actual rolling force and the entrance ratio; and determining the roll gap compensation amount of the rolling mill based on the rolling force increment and the actual rolling force.

[0011] In some embodiments of the present application, the calculating of the rolling force increment based on the actual rolling force and the entrance ratio includes: calculating the partial derivative of the actual rolling force with respect to the entrance ratio based on the actual rolling force and the entrance ratio to determine the rolling force increment of the actual rolling force with respect to the entrance ratio.

[0012] In some embodiments of the present application, determining the roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force includes:

[0013] Based on the rolling force increment and the actual rolling force, the roll gap compensation amount of the rolling stand is calculated according to the following formula:

[0014]

[0015] Wherein, DF is the roll gap compensation amount, H is the inlet strip thickness of the rolling stand, h is the outlet strip thickness of the rolling stand, DC is the actual rolling force, EF is the rolling force increment, and K is the stiffness of the rolling stand.

[0016] According to one aspect of the present application, a rolling equipment control device is provided, wherein the rolling equipment includes a rolling stand and an exit pinch roller, wherein the exit pinch roller is arranged behind the rolling exit of the rolling stand and is used to press the strip during the exit tail swinging process of the rolling stand, and the device includes: a control unit, which is used to control the exit pinch roller to press the strip when an exit tail swinging signal for the rolling stand is triggered, so as to maintain the tension of the strip at a set tension; an acquisition unit, which is used to acquire the actual rolling force and entrance tension ratio of the rolling stand when an uncoiling tail swinging signal for the rolling stand is triggered; a determination unit, which is used to determine the roll gap compensation amount of the rolling stand based on the actual rolling force and the entrance tension ratio; and an adjustment unit, which is used to adjust the roll gap of the rolling stand according to the roll gap compensation amount.

[0017] According to one aspect of the present application, a computer-readable storage medium is provided, in which at least one program code is stored. The at least one program code is loaded and executed by a processor to implement the operations performed by the control method of the rolling equipment as described.

[0018] According to one aspect of the present application, a computer device is provided, which includes one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the control method of the rolling equipment as described.

[0019] Based on the above solution, this application has at least the following advantages or improvements:

[0020] The present application provides a control method for rolling equipment, which detects the tail swinging during unwinding and the tail swinging at the outlet. When tail swinging is found to have occurred or is about to occur, corresponding control is performed respectively: the roll gap is adjusted and the pinch rolls are controlled to press the strip, thereby suppressing the increase in the thickness difference at the outlet caused by the tail swinging during unwinding and preventing the tail of the strip from swinging out at the outlet.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, explaining the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0023] Figure 1 A simplified flow chart of a method for controlling a rolling equipment in one embodiment of the present application is shown;

[0024] Figure 2 A simplified flow chart of a method for controlling a rolling equipment in one embodiment of the present application is shown;

[0025] Figure 3 A curve diagram showing the change in tension of the first pass of tail-swinging unwinding in one embodiment of the present application is shown;

[0026] Figure 4 A simplified flow chart of a method for controlling a rolling equipment in one embodiment of the present application is shown;

[0027] Figure 5 A simplified diagram of pH analysis of an open-coil tail-flicking process according to an embodiment of the present application is shown;

[0028] Figure 6 shows an outlet thickness difference curve diagram in one embodiment of the present application;

[0029] Figure 7 A simplified structural diagram of a rolling equipment control device according to an embodiment of the present application is shown;

[0030] Figure 8 A schematic diagram of the computer system structure suitable for implementing the control method of the rolling equipment of the embodiment of the present application is shown. DETAILED DESCRIPTION

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0032] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0033] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0034] Next, this application will be described in detail with reference to the accompanying drawings.

[0035] See also Figure 1 .

[0036] Figure 1 A simplified flow chart of a control method for a rolling mill in one embodiment of the present application is shown. The rolling mill includes a rolling stand and an exit pinch roller. The exit pinch roller is disposed after the rolling exit of the rolling stand and is used to compress the strip during the exit tail swinging process of the rolling stand. The method may include steps S101-S104:

[0037] Step S101: When an exit tail swing signal for the rolling stand is triggered, the exit pinch rollers are controlled to press the strip steel to maintain the tension of the strip steel at a set tension.

[0038] Step S102: when a coil unwinding tail swinging signal for the rolling stand is triggered, obtaining the actual rolling force and inlet tension ratio of the rolling stand.

[0039] Step S103: determining a roll gap compensation amount of the rolling stand based on the actual rolling force and the inlet ratio.

[0040] Step S104: adjusting the roll gap of the rolling stand according to the roll gap compensation amount.

[0041] In this application, two types of tail swinging can be suppressed: The exit pinch rolls compress the strip to maintain stable strip tension, effectively preventing strip flying. A roll gap compensation is calculated to compensate for the drop in tension during unwinding tail swinging, maintaining rolling stability and reducing exit thickness variation.

[0042] In one embodiment of the present application, the triggering of the exit tail-swing signal for the rolling stand may include: continuously obtaining the exit strip tension of the rolling stand, and if the tension drop rate of the exit strip tension within a preset time period is greater than 20%, triggering the exit tail-swing signal for the rolling stand.

[0043] In this application, the occurrence of tail swinging is accompanied by a significant change in tension, so the occurrence of tail swinging can be determined by detecting the change in tension at the exit of the rolling mill. In actual production, it is not difficult to summarize the magnitude and time of the tension change when tail swinging occurs, so the corresponding data can be used as a judgment standard.

[0044] See also Figure 2 .

[0045] Figure 2 A simplified flow chart of a method for controlling a rolling mill in an embodiment of the present application is shown. The method for controlling the outlet pinch rollers to press the strip may include steps S201-S202:

[0046] Step S201: monitor the exit strip tension of the rolling mill in real time.

[0047] Step S202: According to the outlet strip tension and the PID control principle, the contact pressure of the upper strip pressing roller of the outlet pinch roller is adjusted in real time to press the strip.

[0048] In this application, after adding the pinch rollers, the maximum back tension that the pinch rollers can provide can reach 60kN, which can provide stable tension to a certain extent and provide conditions for stable rolling. The pressure pressed by the pressure rollers is the tension of the pinch rollers, which can be adjusted by the motor, so the tension of the strip is relatively stable. The surface of the pinch rollers is tungsten carbide, and this coating has good performance retention. During the tail swinging process, the strip pressure rollers will be used to press the strip. The upper strip pressure roller will be driven by a frequency-controlled three-phase AC motor and adjusted by two hydraulic cylinders. The contact pressure used to adjust the upper strip pressure roller can be continuously adjusted by the proportional valve, and the pressure range is between 15-140bar. By pressing the strip, the minimum back tension is established. When the strip breaks in the rolling mill, the pressure rollers are automatically clamped to prevent the strip from swinging out.

[0049] In one embodiment of the present application, the method of triggering the uncoiling tail-swinging signal for the rolling stand may include: continuously obtaining the entrance strip tension of the rolling stand, and if the tension drop rate of the entrance strip tension within a preset time period is greater than 20%, triggering the uncoiling tail-swinging signal for the rolling stand.

[0050] In this application, the occurrence of tail swinging is accompanied by a significant change in tension, so the occurrence of tail swinging can be determined by detecting the change in tension at the inlet. In actual production, it is not difficult to summarize the magnitude and time of the tension change when tail swinging occurs, so the corresponding data can be used as a judgment standard.

[0051] For example, see Figure 3 , Figure 3 The following is a graph showing the first pass tail unwinding tension variation curve in one embodiment of the present application. Figure 3 In the figure, the relative tension change (equal to the absolute tension change divided by the tension at the start of the change) within 200ms is 65.517%. Based on this data, the threshold value of the relative tension change in 80ms is taken as 20%. As long as the relative tension decrease rate within 80ms is greater than 20%, it can be determined that unwinding and tail swinging have occurred.

[0052] See also Figure 4-Figure 6 .

[0053] Figure 4 A simplified flow chart of a method for controlling a rolling equipment in an embodiment of the present application is shown. The method for determining the roll gap compensation amount of the rolling stand based on the actual rolling force and the inlet ratio may include steps S401-S402:

[0054] Step S401: Calculate the rolling force increment based on the actual rolling force and the inlet ratio.

[0055] Step S402: determining a roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force.

[0056] In this embodiment, the method for calculating the rolling force increment based on the actual rolling force and the entrance ratio may include: calculating the partial derivative of the actual rolling force with respect to the entrance ratio based on the actual rolling force and the entrance ratio to determine the rolling force increment of the actual rolling force with respect to the entrance ratio.

[0057] In this embodiment, the method for determining the roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force may include:

[0058] Based on the rolling force increment and the actual rolling force, the roll gap compensation amount of the rolling stand can be calculated according to the following formula:

[0059]

[0060] Wherein, DF is the roll gap compensation amount, H is the inlet strip thickness of the rolling stand, h is the outlet strip thickness of the rolling stand, DC is the actual rolling force, EF is the rolling force increment, and K is the stiffness of the rolling stand.

[0061] The partial derivative of actual rolling force with respect to the inlet tension ratio refers to the change in rolling force caused by a unit change in the inlet tension ratio when other factors remain unchanged. The rolling force calculation formula is as follows:

[0062]

[0063] Where P: rolling force; Average deformation resistance; n t : tension factor; B: strip width; R′: flattening radius; H: inlet thickness; h: outlet thickness; Q p : Friction factor.

[0064] Create a general function:

[0065] According to advanced mathematics theory, the partial derivative of rolling force with respect to the inlet ratio is equal to the inverse of the ratio of the partial derivative of the wide function with respect to the inlet ratio to the partial derivative of the wide function with respect to the rolling force, that is,

[0066]

[0067] t b : The entrance is larger than Zhang.

[0068] After derivation, the partial derivative of the wide function with respect to the inlet ratio is expressed as follows:

[0069]

[0070] R′: flattening radius, C0=2.1208*10 -4 [mm 2 / kg];

[0071] R: roller radius; ε: reduction rate, α: coefficient, α=2;

[0072] Q p : friction factor; f: friction coefficient, f s : Slide forward.

[0073] After derivation, the partial derivative of the wide function with respect to rolling force is expressed as follows:

[0074]

[0075] Next, we will combine Figure 5 , the derivation process of the roll gap compensation amount is explained. Figure 5 A simplified PH analysis diagram for unwinding and tail swinging in one embodiment of the present application is shown. Before unwinding and tail swinging, the rolling mill operates at point D, where the rolling force is DC, the thickness reduction is AC=Hh, and the plasticity coefficient M=DC / AC. After tail swinging, if roll gap compensation is not performed, the rolling mill will operate at point F, where the rolling force increase is EF, the thickness reduction is AB=AC-BC=AC-EF / K, and the plasticity coefficient M'=(DC+EF) / AB. It can be seen that at this time, the outlet thickness increases and the rolling force increases, which is consistent with the actual situation. To keep the outlet thickness unchanged, the frame elastic curve needs to be shifted to the left, that is, the roll gap is reduced. When the roll gap is reduced to the point where the outlet thickness remains unchanged, the rolling mill reaches the operating point G. At this time, CG=AC*M', DG=CG-DC, and the roll gap compensation amount DF for unwinding and tail swinging is therefore DG / K. In summary, the roll gap compensation amount for unwinding and tail swinging is calculated as follows:

[0076]

[0077] DC: sampling rolling force; EF: rolling force increment during unwinding and tail swinging; K: stand stiffness.

[0078] See next Figure 6 , Figure 6 FIG. 4 shows an outlet thickness difference curve diagram in an embodiment of the present application, as shown in FIG. Figure 6 As shown in the figure, after the unwinding tail swinging signal is generated, the unwinding tail swinging roller gap control is started. This control suppression lasts until the unit stops. The unwinding tail swinging roller gap compensation precalculated amount is processed by gain and limiter to perform roller gap compensation, and the control achieves good results.

[0079] Next, an embodiment of a device of the present application will be described with reference to the accompanying drawings.

[0080] See also Figure 7 , Figure 7 A simplified structural diagram of a rolling mill control device according to an embodiment of the present application is shown. The rolling mill includes a rolling stand and an exit pinch roller. The exit pinch roller is disposed after the rolling exit of the rolling stand and is used to clamp the strip during the exit tail swing process of the rolling stand. The device 700 may include a control unit 701, an acquisition unit 702, a determination unit 703, and an adjustment unit 704.

[0081] The specific configuration of the device 700 can be: a control unit 701, which is used to control the outlet pinch roller to press the strip when the outlet tail swing signal for the rolling stand is triggered, so as to maintain the tension of the strip at the set tension; an acquisition unit 702, which is used to acquire the actual rolling force and entrance tension ratio of the rolling stand when the uncoiling tail swing signal for the rolling stand is triggered; a determination unit 703, which is used to determine the roll gap compensation amount of the rolling stand based on the actual rolling force and the entrance tension ratio; an adjustment unit 704, which is used to adjust the roll gap of the rolling stand according to the roll gap compensation amount.

[0082] See next Figure 8 .

[0083] See also Figure 8 , Figure 8 A schematic diagram of the computer system structure suitable for implementing the control method of the rolling equipment of the embodiment of the present application is shown.

[0084] It should be noted that Figure 8 The computer system 800 shown is only an example and should not limit the functions and scope of use of the embodiments of the present application.

[0085] like Figure 8 As shown, the computer system 800 includes a central processing unit (CPU) 801, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 802 or the program loaded from the storage part 808 into the random access memory (RAM) 803, such as executing the method described in the above embodiment. Various programs and data required for system operation are also stored in the RAM 803. The CPU 801, ROM 802 and RAM 803 are connected to each other via a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0086] The following components are connected to the I / O interface 805: an input section 806 including a keyboard, a mouse, and the like; an output section 807 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 808 including a hard disk and the like; and a communication section 809 including a network interface card such as a LAN (Local Area Network) card or a modem. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the I / O interface 805 as needed. Removable media 811, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 810 as needed, so that computer programs read therefrom can be installed into the storage section 808 as needed.

[0087] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 809, and / or installed from a removable medium 811. When the computer program is executed by the central processing unit (CPU) 801, the various functions defined in the system of the present application are executed.

[0088] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, 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 (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0089] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, program segment, or part of the code, and the above-mentioned module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0090] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. In some cases, the names of these units do not constitute limitations on the units themselves.

[0091] As another aspect, the present application further provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the rolling equipment control method described in the above embodiment.

[0092] As another aspect, the present application further provides a computer-readable medium, which may be included in the electronic device described in the above embodiments, or may exist independently and not be incorporated into the electronic device. The computer-readable medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device implements the method for controlling the rolling equipment described in the above embodiments.

[0093] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the application, the features and functions of two or more modules or units described above can be concretized in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0094] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiment of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions so that a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) executes the method according to the embodiment of the present application. After considering the specification and practicing the embodiments disclosed here, those skilled in the art will easily think of other embodiments of the present application. This application is intended to cover any modification, use or adaptive change of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in this application.

[0095] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for controlling a rolling equipment, characterized in that: The rolling equipment includes a rolling stand and an exit pinch roller, wherein the exit pinch roller is arranged behind the rolling exit of the rolling stand and is used to press the strip steel during the exit tail swinging process of the rolling stand. The method includes: When an exit tail swing signal for the rolling stand is triggered, the exit pinch rollers are controlled to press the strip steel to maintain the tension of the strip steel at a set tension; When a coil unwinding tail swing signal for the rolling stand is triggered, the actual rolling force and inlet tension ratio of the rolling stand are acquired; determining a roll gap compensation amount of the rolling stand based on the actual rolling force and the inlet ratio; adjusting the roll gap of the rolling stand according to the roll gap compensation amount; The step of determining the roll gap compensation amount of the rolling stand based on the actual rolling force and the inlet ratio comprises: Calculating a rolling force increment based on the actual rolling force and the inlet ratio; determining a roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force; The calculating the rolling force increment based on the actual rolling force and the inlet ratio comprises: Calculating a partial derivative of the actual rolling force with respect to the inlet ratio based on the actual rolling force and the inlet ratio to determine a rolling force increment of the actual rolling force with respect to the inlet ratio; The determining of the roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force comprises: Based on the rolling force increment and the actual rolling force, the roll gap compensation amount of the rolling stand is calculated according to the following formula: Wherein, DF is the roll gap compensation amount, H is the inlet strip thickness of the rolling stand, h is the outlet strip thickness of the rolling stand, DC is the actual rolling force, EF is the rolling force increment, and K is the stiffness of the rolling stand.

2. The method according to claim 1, characterized in that The triggering of the tail-swing signal at the exit of the rolling stand comprises: The outlet strip tension of the rolling stand is continuously acquired, and if the tension drop rate of the outlet strip tension within a preset time is greater than 20%, an outlet tail swing signal for the rolling stand is triggered.

3. The method according to claim 1, characterized in that The controlling of the outlet pinch rollers to press the strip steel comprises: Real-time monitoring of the exit strip tension of the rolling stand; According to the exit strip tension and the PID control principle, the contact pressure of the upper strip pressing roller of the exit pinch roller is adjusted in real time to press the strip.

4. The method according to claim 1, wherein The triggering of the uncoiling tail swinging signal for the rolling stand includes: The inlet strip tension of the rolling stand is continuously acquired, and if the inlet strip tension drops by more than 20% within a preset time period, a coil unwinding signal for the rolling stand is triggered.

5. A rolling equipment control device, characterized in that: The rolling equipment includes a rolling stand and an exit pinch roller, wherein the exit pinch roller is arranged behind the rolling exit of the rolling stand and is used to press the strip during the tail swinging process at the exit of the rolling stand. The device includes: a control unit configured to control the exit pinch rollers to press the steel strip when an exit tail swing signal for the rolling stand is triggered, so as to maintain the tension of the steel strip at a set tension; an acquisition unit, configured to acquire the actual rolling force and inlet tension ratio of the rolling stand when a coil unwinding tail swinging signal for the rolling stand is triggered; a determination unit, configured to determine a roll gap compensation amount of the rolling stand based on the actual rolling force and the inlet ratio; The determining unit is further configured to calculate a rolling force increment based on the actual rolling force and the inlet ratio; determining a roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force; The calculating the rolling force increment based on the actual rolling force and the inlet ratio comprises: Calculating a partial derivative of the actual rolling force with respect to the inlet ratio based on the actual rolling force and the inlet ratio to determine a rolling force increment of the actual rolling force with respect to the inlet ratio; The determining of the roll gap compensation amount of the rolling stand based on the rolling force increment and the actual rolling force comprises: Based on the rolling force increment and the actual rolling force, the roll gap compensation amount of the rolling stand is calculated according to the following formula: Wherein, DF is the roll gap compensation amount, H is the inlet strip thickness of the rolling stand, h is the outlet strip thickness of the rolling stand, DC is the actual rolling force, EF is the rolling force increment, and K is the stiffness of the rolling stand; The adjusting unit is used to adjust the roll gap of the rolling stand according to the roll gap compensation amount.

6. A computer-readable storage medium, characterized in that At least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by the processor to implement the operations performed by the control method for rolling equipment according to any one of claims 1 to 4.

7. A computer device, characterized in that: The computer device includes one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the control method of the rolling equipment as described in any one of claims 1 to 4.

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