A control method and device of a single-stand rolling mill, a medium and an electronic device

Abstract

The application relates to the technical field of single-stand rolling mills, and discloses a control method and device for a single-stand rolling mill, a medium and an electronic device. The method comprises the following steps: acquiring a first actual thickness value of a strip steel on an inlet side of a single-stand rolling mill and a first current speed; determining a first deviation value based on the first actual thickness value and a preset thickness value on the inlet side; acquiring a second actual thickness value of the strip steel on an outlet side of the single-stand rolling mill and a second current speed; determining a second deviation value based on the second actual thickness value and a preset thickness value on the outlet side; determining a speed adjustment value based on the first deviation value, the first current speed, the second actual thickness value and the second current speed; determining a speed compensation value based on the second deviation value, the first current speed, the second current speed and the preset thickness value on the outlet side; acquiring a speed value of an uncoiler of the single-stand rolling mill; and determining an initial speed value of a next rolling cycle based on the speed adjustment value, the speed compensation value and the speed value of the uncoiler.

Description

Technical Field

[0001] This application relates to the field of single-stand rolling mill technology, and in particular, to a control method, device, medium, and electronic equipment for a single-stand rolling mill. Background Technology

[0002] The 20-roll single-stand reversible rolling mill sets up between the uncoiler and the coiler. Before rolling begins, the steel coil is loaded onto the coiler mandrel. The strip head is fed into the rolling mill through the uncoiler operation. After the strip is threaded, the coiler is used on the other side to coil the strip head before rolling. The mill stops after each rolling pass is completed, and the next rolling pass is started after switching passes.

[0003] In actual rolling processes, due to market demand, material characteristics, and production process features of the rolled silicon steel, the produced silicon steel products are all ultra-thin high-silicon strip steel products. The increased silicon content leads to increased hardness, and the high-temperature rolling process further complicates the strip thickness control, making it impossible to achieve the target requirements. Thickness fluctuations occur during rolling, and since thickness control accuracy is a crucial indicator of product precision, these inconsistencies severely impact the quality and output of the strip steel on-site. Summary of the Invention

[0004] This application provides a control method, device, medium, and electronic equipment for a single-stand rolling mill, which can improve the control accuracy of strip steel.

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

[0006] According to one aspect of the embodiments of this application, a control method for a single-stand rolling mill is provided, the method comprising:

[0007] Obtain the first actual thickness value of the strip at the entrance side of the single-stand rolling mill and the first current speed;

[0008] The first deviation value of the inlet side is determined based on the first actual thickness value and the preset inlet side thickness value;

[0009] Obtain the second actual thickness value of the strip on the exit side of the single-stand rolling mill and the second current speed;

[0010] The second deviation value of the outlet side is determined based on the second actual thickness value and the preset outlet side thickness value;

[0011] The speed adjustment value on the inlet side is determined based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed.

[0012] The speed compensation value of the exit side is determined based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value;

[0013] Obtain the speed value of the uncoiler of the single-stand rolling mill;

[0014] The initial speed value of the uncoiler for the next rolling cycle is determined based on the speed adjustment value at the inlet side, the speed compensation value at the outlet side, and the speed value of the uncoiler, so as to obtain strip of the target thickness in the next rolling cycle.

[0015] In one embodiment of this application, based on the foregoing scheme, determining the first deviation value of the inlet side based on the first actual thickness value and the preset inlet side thickness value includes:

[0016] The first deviation value Δh is calculated using the following formula. e Δh e =h e -H e ;

[0017] Among them, h e H is the first actual thickness value. e The preset inlet side thickness value.

[0018] In one embodiment of this application, based on the foregoing scheme, determining the second deviation value of the outlet side based on the second actual thickness value and the preset outlet side thickness value includes:

[0019] The second deviation value Δh is calculated using the following formula. d Δh d =h d -H d ;

[0020] Where, Δh d H is the second actual thickness value. d The preset outlet side thickness value.

[0021] In one embodiment of this application, based on the foregoing scheme, determining the speed adjustment value on the inlet side based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed includes:

[0022] Side thickness value, V d V is the second current velocity. e H is the first current speed. d The preset outlet side thickness value.

[0023] In one embodiment of this application, based on the foregoing scheme, determining the speed compensation value on the exit side based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value includes:

[0024] The velocity compensation value Δv1 on the exit side is calculated using the following formula:

[0025]

[0026] Where C1 is the preset compensation coefficient, Δh d V is the second deviation value. d V is the second current velocity. e H is the first current speed. d The preset outlet side thickness value.

[0027] In one embodiment of this application, based on the foregoing scheme, the method further includes:

[0028] Obtain the tension value at the entrance side of the single-stand rolling mill;

[0029] The tension deviation value of the inlet side is calculated based on the tension value of the inlet side and the preset tension value of the inlet side;

[0030] The tension on the inlet side of the single-stand rolling mill is adjusted based on the tension deviation value.

[0031] In one embodiment of this application, based on the foregoing scheme, adjusting the tension on the inlet side of the single-stand rolling mill based on the tension deviation value includes:

[0032] If the tension deviation value is within a preset first deviation range, the height adjustment value of the wiping roller of the single-stand mill is determined based on the tension value on the inlet side and the tension deviation value.

[0033] The height of the wiping roller is adjusted based on the height adjustment value to adjust the tension on the inlet side of the single-stand mill;

[0034] If the tension deviation value is within the preset second deviation range, the roll gap value of the roll gap pressing cylinder of the single-stand mill is adjusted to adjust the tension on the inlet side of the single-stand mill.

[0035] According to one aspect of the embodiments of this application, a control device for a single-stand rolling mill is provided. The device includes a first acquisition unit, configured to acquire a first actual thickness value and a first current speed of the strip at the inlet side of the single-stand rolling mill; a first determination unit, configured to determine a first deviation value of the inlet side based on the first actual thickness value and a preset inlet side thickness value; a second acquisition unit, configured to acquire a second actual thickness value and a second current speed of the strip at the outlet side of the single-stand rolling mill; a second determination unit, configured to determine a second deviation value of the outlet side based on the second actual thickness value and a preset outlet side thickness value; and a third determination unit, configured to determine a second deviation value of the outlet side based on the first actual thickness value and a preset outlet side thickness value. The first deviation value, the first current speed, the second actual thickness value, and the second current speed determine the speed adjustment value on the inlet side; the fourth determining unit is used to determine the speed compensation value on the outlet side based on the second deviation value, the first current speed, the second current speed, and the preset outlet side thickness value; the third obtaining unit is used to obtain the speed value of the uncoiler of the single-stand rolling mill; the fifth determining unit is used to determine the initial speed value of the uncoiler for the next rolling cycle based on the speed adjustment value on the inlet side, the speed compensation value on the outlet side, and the speed value of the uncoiler, so as to obtain strip steel of the target thickness in the next rolling cycle.

[0036] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided having a computer program stored thereon, the computer program including executable instructions that, when executed by a processor, implement the control method for a single-stand rolling mill as described in the above embodiments.

[0037] According to one aspect of the embodiments of this application, an electronic device is provided, comprising: one or more processors; and a memory for storing executable instructions of the processors, wherein when the executable instructions are executed by the one or more processors, the one or more processors implement the control method for a single-stand rolling mill as described in the above embodiments.

[0038] In the technical solution of this application embodiment, a first deviation value can be determined by comparing the first actual thickness value of the strip at the entrance side of the single-stand rolling mill with a preset entrance side thickness value. Then, a speed adjustment value at the entrance side is determined based on the first deviation value. A speed compensation value at the exit side is determined by obtaining the second actual thickness value of the strip at the exit side of the single-stand rolling mill. Subsequently, the speed value of the uncoiler at the single-stand rolling mill is obtained. Finally, the initial speed value of the uncoiler for the next rolling cycle is determined using the speed adjustment value at the entrance side, the speed compensation value at the exit side, and the speed value of the uncoiler. This ensures that strip of the target thickness is obtained in the next rolling cycle, thereby completing the thickness control of the strip and improving the control accuracy of the strip.

[0039] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0041] Figure 1 This is a flowchart illustrating a control method for a single-stand rolling mill according to an embodiment of this application;

[0042] Figure 2 This is a flowchart illustrating the adjustment of the tension on the inlet side of the single-stand rolling mill based on the tension deviation value, according to an embodiment of this application.

[0043] Figure 3 This is a block diagram of a control device for a single-stand rolling mill according to an embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the system structure of an electronic device according to an embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the control flow of a single-stand rolling mill according to an embodiment of this application.

[0046] Attached Figure Captions

[0047] 1. Inlet-side uncoiler; 2. Inlet-side tension meter; 3. Inlet speed meter; 4. Inlet thickness gauge; 5. Outlet thickness gauge; 6. Outlet speed meter; 7. Outlet-side tension meter; 8. Outlet-side coiler; 9. Roll gap pressing cylinder; 10. Inlet-side fine rubbing roller; 11. Inlet-side coarse rubbing roller; 12. Outlet-side coarse rubbing roller; 13. Outlet-side fine rubbing roller. Detailed Implementation

[0048] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary 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 to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0049] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0050] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller node devices.

[0051] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0052] It should be noted that "multiple" in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0054] First, it should be noted that the control scheme for a single-stand rolling mill proposed in this application can be applied to related technical fields of single-stand rolling mills. A first deviation value can be determined by comparing the first actual thickness value of the strip at the entrance side of the single-stand rolling mill with a preset entrance side thickness value. Then, a speed adjustment value at the entrance side can be determined based on the first deviation value. A speed compensation value at the exit side is determined by obtaining the second actual thickness value of the strip at the exit side of the single-stand rolling mill. Subsequently, the speed value of the uncoiler at the single-stand rolling mill is obtained. Finally, the initial speed value of the uncoiler for the next rolling cycle is determined using the speed adjustment value at the entrance side, the speed compensation value at the exit side, and the speed value of the uncoiler. This ensures that strip of the target thickness is obtained in the next rolling cycle, thereby completing the thickness control of the strip and improving the control accuracy of the strip.

[0055] According to one aspect of this application, a verification method is provided. Figure 1 This is a flowchart illustrating a control method for a single-stand rolling mill according to an embodiment of this application. Figure 5 The control principle diagram for the entire single-stand rolling mill is shown below. The control method for this single-stand rolling mill includes at least steps 110 to 180, which are described in detail below:

[0056] In step 110, the first actual thickness value of the strip on the entrance side of the single-stand rolling mill and the first current speed are obtained.

[0057] Specifically, by obtaining the first actual thickness value of the strip on the entrance side of a single-stand rolling mill and the first current speed of the strip on the entrance side, the following formula can be obtained based on the thickness control principle that the mass flow through the entrance and exit sides of the mill roll gap is equal during the rolling process:

[0058] V e ·h e =V d ·h d (1)

[0059] Among them, V e h is the first current speed of the strip on the inlet side. e V is the first current velocity. d h is the second current speed of the strip on the export side. d This is the second current speed.

[0060] In step 120, a first deviation value of the inlet side is determined based on the first actual thickness value and the preset inlet side thickness value.

[0061] In one embodiment of this application, determining the first deviation value of the inlet side based on the first actual thickness value and a preset inlet side thickness value includes:

[0062] The first deviation value Δh is calculated using the following formula. e Δh e =h e -H e (2);

[0063] Among them, h e H is the first actual thickness value. e The preset inlet side thickness value.

[0064] Specifically, the first deviation value obtained from the inlet side can be used to perform subsequent formula transformations and calculations.

[0065] In step 130, the second actual thickness value of the strip on the exit side of the single-stand rolling mill and the second current speed are obtained.

[0066] Specifically, as mentioned above, the above formula (1) can be derived based on the thickness control principle that the mass flow through the inlet and outlet sides of the mill roll gap is equal during the rolling process, combined with the obtained second actual thickness value and the second current speed.

[0067] In step 140, a second deviation value for the outlet side is determined based on the second actual thickness value and the preset outlet side thickness value.

[0068] In one embodiment of this application, determining the second deviation value of the outlet side based on the second actual thickness value and a preset outlet side thickness value includes:

[0069] The second deviation value Δh is calculated using the following formula. d Δh d =h d -H d (3);

[0070] Where, Δh d H is the second actual thickness value. d The preset outlet side thickness value.

[0071] Specifically, by substituting the first deviation value on the inlet side, the second deviation value on the outlet side, and the thickness control principle of equal mass flow, that is, by substituting the above formulas (2) and (3) into formula (1), the following formula (4) can be obtained: V e ·(Δh e +H e ) = V d ·(Δh d +H d (4).

[0072] In step 150, the speed adjustment value on the inlet side is determined based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed.

[0073] In one embodiment of this application, determining the speed adjustment value on the inlet side based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed includes:

[0074] The velocity adjustment value Δv2 on the inlet side is calculated using the following formula:

[0075]

[0076] Where C2 is the preset gain coefficient, H e V is the preset inlet-side thickness value. d V is the second current velocity. eH is the first current speed. d The preset outlet side thickness value.

[0077] In step 160, the speed compensation value of the exit side is determined based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value.

[0078] In one embodiment of this application, determining the speed compensation value on the exit side based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value includes:

[0079] The velocity compensation value Δv1 on the exit side is calculated using the following formula:

[0080]

[0081] Where C1 is the preset compensation coefficient, Δh d V is the second deviation value. d V is the second current velocity. e H is the first current speed. d The preset outlet side thickness value.

[0082] Specifically, due to the control deviation Δh by the export thickness d If the target is 0, then the control formula (5) can be modified to:

[0083] V e ·(Δh e +H e ) = V d ·H d (5)

[0084] In equation (5), since the influence of the actual thickness deviation on the exit side on the control is eliminated, the thickness deviation on the exit side is compensated for by the uncoiler speed. Thus, the compensation control for the thickness deviation on the exit side is achieved by adjusting the uncoiler speed. Therefore, the compensation control is as follows:

[0085] C1 is a combination of multiple influence coefficients, determined based on on-site debugging; Δv1 is the compensation value for thickness deviation adjustment.

[0086] Due to H e Since the physical thickness of the inlet strip cannot be controlled, the thickness of the outlet strip is considered to be an ideal constant value H. d When using the inlet uncoiler speed for thickness adjustment, assuming the change in inlet speed in the next cycle is Δv2, to keep both sides of the equation constant, equation (5) can be transformed into:

[0087] (Ve +Δv2)·(Δh e +H e ) = V d ·H d (7)

[0088]

[0089] Since the control effect needs to be adjusted according to the actual situation on site, the proportional coefficient needs to be increased, so formula (8) becomes the following formula (9):

[0090]

[0091] Where: Δv2 is the real-time adjustment speed value due to inlet thickness deviation and outlet speed; C2 is the gain coefficient for thickness control adjustment;

[0092] By obtaining the value Δv2 that needs to be changed for thickness control, and adding it to the current active speed of the uncoiler, thickness control of the strip is achieved.

[0093] In step 170, the speed value of the uncoiler of the single-stand rolling mill is obtained.

[0094] Specifically, by obtaining the current inlet-side uncoiler speed v ent This allows for adjustments to the speed of the uncoiler on the inlet side in the next cycle, thereby adjusting the thickness of the strip.

[0095] In step 180, the initial speed value of the uncoiler for the next rolling cycle is determined based on the speed adjustment value on the inlet side, the speed compensation value on the outlet side, and the speed value of the uncoiler, so as to obtain strip of the target thickness in the next rolling cycle.

[0096] Specifically, by obtaining the current inlet-side uncoiler speed v ent Since the uncoiler speed is used as the active control value to achieve high-precision control of the exit thickness, the set speed of the uncoiler at the next moment is obtained from equations (6) and (9) as follows: (10)

[0097] v ent n+1 =v ent +Δv1+Δv2 (10)

[0098] In one embodiment of this application, steps 190-210 may also be performed:

[0099] Step 190: Obtain the tension value at the entrance side of the single-stand rolling mill.

[0100] Step 200: Calculate the tension deviation value of the inlet side based on the tension value of the inlet side and the preset tension value of the inlet side.

[0101] Step 210: Adjust the tension on the inlet side of the single-stand rolling mill based on the tension deviation value.

[0102] In one embodiment of this application, step 210 may be performed according to steps S1-S3:

[0103] Step S1: If the tension deviation value is within the preset first deviation range, determine the height adjustment value of the wiping roller of the single-stand mill based on the tension value on the inlet side and the tension deviation value.

[0104] Step S2: Adjust the height of the wiping roller based on the height adjustment value to adjust the tension on the inlet side of the single-stand mill.

[0105] Step S3: If the tension deviation value is within the preset second deviation range, adjust the roll gap value of the roll gap pressing cylinder of the single-stand mill to adjust the tension on the inlet side of the single-stand mill.

[0106] Specifically, the preset first deviation range is the range where the tension deviation value on the inlet side is greater than or equal to 300 kg, and the preset second deviation range is the range where the tension deviation value on the inlet side is less than 300 kg.

[0107] To achieve rolling stability, while controlling the rolling speed, the change in rolling speed also caused tension fluctuations. In order to ensure that the actual tension value matches the set value, closed-loop control is performed on the inlet and outlet tension values.

[0108] By obtaining the set value T of the outlet side tension value S-d And the current tension value T at the rolling exit. A-d

[0109] The tension deviation on the exit side is converted into an exit side velocity compensation value.

[0110]

[0111] Wherein, G1 is a coefficient related to the magnitude of the tension deviation;

[0112] G2 is a coefficient related to the rolling speed;

[0113] G3 is the compensation coefficient.

[0114] By obtaining the current speed of the outlet-side coiler as v del The velocity reference value at the next moment is

[0115] v del n+1=v del +(ε n -ε n-1 (12)

[0116] In the formula v del n+1 ε serves as the speed reference value for the next cycle. n ε is the current speed compensation value. n-1 This is the speed compensation value for the previous cycle.

[0117] By using the preset inlet-side tension value T S-e And the tension value at the entrance side of the single-stand rolling mill.

[0118] Obtain the inlet-side tension deviation at time n.

[0119] t n =T A-e -T S-e (13)

[0120] The inlet-side tension value is calculated using the inlet-side automatic tension rule (ATR), and the tension adjustment method is defined as follows:

[0121] Depending on the different tension deviations, different tension adjustment methods are used to achieve the goal of quickly and accurately adjusting the tension on the inlet side.

[0122] When |t n When the weight is ≥300kg, set the tension adjustment method indicator γ to 1, i.e., γ=1.

[0123] The current height of the wiping roller is X mm, and the preset initial value of X is -5 mm.

[0124] Combined with |t n When |≥300kg,

[0125] Where k1 is the gain parameter for position adjustment, z1 is the proportional parameter for tension deviation adjustment, and α is the height adjustment value of the wiping roller of the single-stand rolling mill.

[0126] When |t n When the weight is less than 300 kg, γ = 0, and the wiping roller is no longer used for gain adjustment. When γ = 0, the process of using the roll gap pressing cylinder for tension adjustment begins. Since the output value of the roll gap pressing cylinder should be the distance value s (unit: mm), the tension value kilonewtons (kN) needs to be converted into the corresponding distance value of the roll gap pressing cylinder through data conversion.

[0127] The roll gap value is calculated as follows:

[0128] In the formula: S is the roll gap output value due to the tension deviation on the inlet side;

[0129] D1 is the roll gap output gain value;

[0130] D2 is the output proportional value of the tension change over one cycle;

[0131] D3 is the tension deviation ratio;

[0132] M is the elastic modulus of the rolling mill, which is a fixed value and is obtained by periodically measuring the rolling mill.

[0133] P represents the current rolling force of the mill, obtained through a pressure head installed at the top of the mill.

[0134] T A-e Tension value on the inlet side

[0135] t n This represents the tension deviation value at the mill inlet side;

[0136] t n-1 This represents the tension deviation value within the previous cycle;

[0137] By using the uncoiler speed to control all control processes for thickness, the thickness control accuracy of strip steel can be improved, while ensuring stability during the rolling process. This not only ensures the stability of important rolling parameters, but also solves the problems of strip steel thickness fluctuation and tension fluctuation caused by the original thickness control method.

[0138] By changing the speed of the uncoiler, the thickness control of the strip can be changed in real time, effectively improving the thickness control accuracy of the 20-roll mill in the rolling of ultra-thin silicon steel, avoiding thickness fluctuations during the rolling process, and achieving good control results. The improved thickness control method changed the original method of controlling thickness by pressing down through the roll gap, and instead adopted the method of controlling thickness by changing the speed of the uncoiler. At the same time, tension control adopted two methods: using wiping rollers and hydraulic pressing cylinder roll gaps to control tension, ensuring the thickness accuracy and rolling stability on site.

[0139] Figure 3 This is a block diagram illustrating a control device 300 for a single-stand rolling mill according to an embodiment of this application. The control device 300 for a single-stand rolling mill according to an embodiment of this application includes: a first acquisition unit 301, a first determination unit 302, a second acquisition unit 303, a second determination unit 304, a third determination unit 305, a fourth determination unit 306, a third acquisition unit 307, and a fifth determination unit 308.

[0140] The first acquisition unit 301 is used to acquire the first actual thickness value of the strip on the entrance side of the single-stand rolling mill and the first current speed.

[0141] The first determining unit 302 is used to determine the first deviation value of the inlet side based on the first actual thickness value and the preset inlet side thickness value.

[0142] The second acquisition unit 303 is used to acquire the second actual thickness value and the second current speed of the strip on the exit side of the single-stand rolling mill.

[0143] The second determining unit 304 is used to determine the second deviation value of the outlet side based on the second actual thickness value and the preset outlet side thickness value.

[0144] The third determining unit 305 is used to determine the speed adjustment value on the inlet side based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed.

[0145] The fourth determining unit 306 is used to determine the speed compensation value of the exit side based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value.

[0146] The third acquisition unit 307 is used to acquire the speed value of the uncoiler of the single-stand rolling mill.

[0147] The fifth determining unit 308 is used to determine the initial speed value of the uncoiler for the next rolling cycle based on the speed adjustment value on the inlet side, the speed compensation value on the outlet side, and the speed value of the uncoiler, so as to obtain strip steel of the target thickness in the next rolling cycle.

[0148] In another aspect, this application also provides a computer-readable storage medium storing a program product capable of implementing the methods provided above in this specification. In some possible implementations, various aspects of this application may also be implemented as a program product comprising program code that, when run on a terminal device, causes the terminal device to perform the steps described in the "Embodiment Methods" section of this specification according to various exemplary embodiments of this application.

[0149] The program product for implementing the above-described method according to the embodiments of this application may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of this application is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0150] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0151] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying 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 readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0152] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0153] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0154] In another respect, this application also provides an electronic device capable of implementing the above-described method.

[0155] Those skilled in the art will understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, collectively referred to herein as a "circuit," "module," or "system."

[0156] The following reference Figure 4 To describe an electronic device 400 according to this embodiment of the present application. Figure 4 The electronic device 400 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0157] like Figure 4 As shown, the electronic device 400 is manifested in the form of a general-purpose computing device. The components of the electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including storage unit 420 and processing unit 410).

[0158] The storage unit stores program code that can be executed by the processing unit 410, causing the processing unit 410 to perform the steps described in the "Embodiment Methods" section above according to various exemplary embodiments of this application.

[0159] Storage unit 420 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 421 and / or cache memory 422, and may further include a read-only memory (ROM) 423.

[0160] Storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0161] Bus 430 can represent one or more of several types of bus structures, including a memory cell bus or memory cell control node, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0162] Electronic device 400 can also communicate with one or more external devices 1200 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 400, and / or with any device that enables electronic device 400 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 450. Furthermore, electronic device 400 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 460. As shown, network adapter 460 communicates with other modules of electronic device 400 via bus 430. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0163] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the method according to the embodiments of this application.

[0164] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this application, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0165] It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A control method for a single-stand rolling mill, characterized in that, include: Obtain the first actual thickness value of the strip at the entrance side of the single-stand rolling mill and the first current speed; The first deviation value of the inlet side is determined based on the first actual thickness value and the preset inlet side thickness value; Obtain the second actual thickness value of the strip on the exit side of the single-stand rolling mill and the second current speed; The second deviation value of the outlet side is determined based on the second actual thickness value and the preset outlet side thickness value; The speed adjustment value on the inlet side is determined based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed. The speed compensation value of the exit side is determined based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value; Obtain the speed value of the uncoiler of the single-stand rolling mill; The initial speed value of the uncoiler for the next rolling cycle is determined based on the speed adjustment value at the inlet side, the speed compensation value at the outlet side, and the speed value of the uncoiler, so as to obtain strip of the target thickness in the next rolling cycle. The step of determining the first deviation value of the inlet side based on the first actual thickness value and the preset inlet side thickness value includes: The first deviation value is calculated using the following formula. : = ; in, The first actual thickness value, The preset inlet-side thickness value; Determining the second deviation value on the exit side based on the second actual thickness value and the preset exit side thickness value includes: The second deviation value is calculated using the following formula. : = ; in, This is the second actual thickness value. The preset outlet-side thickness value; The step of determining the speed adjustment value on the inlet side based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed includes: The velocity adjustment value on the inlet side is calculated using the following formula. : in, The preset gain coefficient, The preset inlet-side thickness value, The second current speed, The first current speed, The preset outlet-side thickness value; The step of determining the speed compensation value on the exit side based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value includes: The velocity compensation value on the exit side is calculated using the following formula. : = in, The preset compensation coefficient, This is the second deviation value. The second current speed, The first current speed, The preset outlet side thickness value.

2. The method according to claim 1, characterized in that, The method further includes: Obtain the tension value at the entrance side of the single-stand rolling mill; The tension deviation value of the inlet side is calculated based on the tension value of the inlet side and the preset tension value of the inlet side; The tension on the inlet side of the single-stand rolling mill is adjusted based on the tension deviation value.

3. The method according to claim 2, characterized in that, The adjustment of the tension on the inlet side of the single-stand rolling mill based on the tension deviation value includes: If the tension deviation value is within a preset first deviation range, the height adjustment value of the wiping roller of the single-stand mill is determined based on the tension value on the inlet side and the tension deviation value. The height of the wiping roller is adjusted based on the height adjustment value to adjust the tension on the inlet side of the single-stand mill; If the tension deviation value is within the preset second deviation range, the roll gap value of the roll gap pressing cylinder of the single-stand mill is adjusted to adjust the tension on the inlet side of the single-stand mill.

4. A control device for a single-stand rolling mill, characterized in that, The device includes: The first acquisition unit is used to acquire the first actual thickness value of the strip on the entrance side of the single-stand rolling mill and the first current speed; The first determining unit is used to determine the first deviation value of the inlet side based on the first actual thickness value and the preset inlet side thickness value; The first determining unit is further configured to The first deviation value is calculated using the following formula. : = ; in, The first actual thickness value, The preset inlet-side thickness value; The second acquisition unit is used to acquire the second actual thickness value and the second current speed of the strip on the exit side of the single-stand rolling mill; The second determining unit is used to determine the second deviation value of the outlet side based on the second actual thickness value and the preset outlet side thickness value; The second determining unit is further used for The second deviation value is calculated using the following formula. : = in, This is the second actual thickness value. The preset outlet-side thickness value; The third determining unit is used to determine the speed adjustment value on the inlet side based on the first deviation value, the first current speed, the second actual thickness value, and the second current speed. The third determining unit is also used to calculate the velocity adjustment value on the inlet side using the following formula. : in, The preset gain coefficient, The preset inlet-side thickness value, The second current speed, The first current speed, The preset outlet-side thickness value; The fourth determining unit is used to determine the speed compensation value of the exit side based on the second deviation value, the first current speed, the second current speed, and the preset exit side thickness value; The fourth determining unit is also used to calculate the speed compensation value on the exit side using the following formula. : = in, The preset compensation coefficient, This is the second deviation value. The second current speed, The first current speed, The preset outlet-side thickness value; The third acquisition unit is used to acquire the speed value of the uncoiler of the single-stand rolling mill; The fifth determining unit is used to determine the initial speed value of the uncoiler for the next rolling cycle based on the speed adjustment value on the inlet side, the speed compensation value on the outlet side, and the speed value of the uncoiler, so as to obtain strip of the target thickness in the next rolling cycle.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to perform the operations performed by the method as described in any one of claims 1 to 3.

6. An electronic device, characterized in that, The electronic device includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation performed by the method as described in any one of claims 1 to 3.

Images