Strip exit thickness difference determination method, apparatus, device, and medium

Abstract

The present disclosure relates to a strip outlet thickness difference determination method, device, equipment and medium. When a rolling mill automatic control system produces a target product according to a preset running speed, the strip length at the rolling mill roll position is determined based on the uncoiler discharge length and the strip length between the rolling mill main machine and the uncoiler; the strip thickness corresponding to the strip length at the rolling mill roll position is determined, and the strip thickness is taken as the inlet material thickness of the rolling mill roll position; according to the inlet linear velocity of the rolling mill roll position, the outlet linear velocity of the rolling mill roll position, the inlet material thickness of the rolling mill roll position and the preset strip outlet thickness of the target product, the first strip outlet thickness difference of the target product is determined. Thus, the strip outlet thickness difference of the product can be accurately calculated based on the actual parameters in the product production process, the influence of the precision limitation of the thickness gauge and external environmental factors is eliminated, and the yield and the thickness control precision of the automatic thickness control subsystem in the rolling mill automatic control system are improved.

Description

Technical Field

[0001] This disclosure relates to the field of rolling control technology, and in particular to a method, apparatus, equipment and medium for determining the thickness difference at the exit of strip. Background Technology

[0002] When using the automatic control system of a rolling mill to produce products, it is usually necessary to measure the thickness difference of the strip exit. The thickness difference of the strip exit is an important parameter for the automatic thickness control subsystem (such as the AGC system) in the automatic control system of the rolling mill to perform closed-loop thickness control. Therefore, the accuracy of the thickness difference of the strip exit directly affects the product qualification rate and the thickness control accuracy of the automatic thickness control subsystem.

[0003] In related technologies, thickness gauges in the automatic control system of rolling mills are typically used to measure the strip thickness difference at the exit of the product. However, due to limitations in the accuracy of current thickness gauges and the influence of external environmental factors, it is impossible to accurately measure the strip thickness at the exit of extremely thin products. The strip thickness at the exit of the product can only be determined during the quality inspection stage. Therefore, this affects the product qualification rate and the thickness control accuracy of the automatic thickness control subsystem. Summary of the Invention

[0004] To address the aforementioned technical problems, this disclosure provides a method, apparatus, equipment, and medium for determining the thickness difference at the exit of strip.

[0005] In a first aspect, this disclosure provides a method for determining the thickness difference at the exit of strip steel, applied to electronic equipment in an automatic control system of a rolling mill. The automatic control system further includes an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler. The method includes: When the automatic control system of the rolling mill produces the target product at a preset operating speed, the strip length at the position of the roll on the rolling mill main machine is determined based on the uncoiling length of the uncoiler and the strip length between the rolling mill main machine and the uncoiler. Determine the strip thickness corresponding to the strip length at the roll position, and use the strip thickness as the inlet material thickness at the roll position; The first strip exit thickness difference of the target product is determined based on the inlet linear velocity of the roll position, the outlet linear velocity of the roll position, the inlet material thickness of the roll position, and the preset strip exit thickness of the target product.

[0006] Secondly, this disclosure provides a strip exit thickness difference determination device, an electronic device configured in the automatic control system of a rolling mill, the automatic control system of the rolling mill further including an uncoiler, a rolling mill main unit, a thickness gauge and a coiler, the device comprising: The first determining module is used to determine the strip length at the position of the rolls on the main rolling mill based on the uncoiling length of the uncoiler and the strip length between the main rolling mill and the uncoiler when the automatic control system of the rolling mill produces the target product at a preset operating speed. The second determining module is used to determine the strip thickness corresponding to the strip length at the roll position, and to use the strip thickness as the inlet material thickness at the roll position; The third determining module is used to determine the first strip exit thickness difference of the target product based on the inlet linear velocity of the roll position, the outlet linear velocity of the roll position, the inlet material thickness of the roll position, and the preset strip exit thickness of the target product.

[0007] Thirdly, embodiments of this disclosure also provide an electronic device, the device comprising: One or more processors; Storage device for storing one or more programs. When one or more programs are executed by one or more processors, the one or more processors implement the methods provided in the first aspect.

[0008] Fourthly, embodiments of this disclosure also provide a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the method provided in the first aspect.

[0009] The technical solution provided in this disclosure has the following advantages compared with the prior art: This disclosure discloses a method, apparatus, equipment, and medium for determining strip exit thickness difference, applied to electronic equipment in a rolling mill automatic control system. The rolling mill automatic control system also includes an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler. The method includes: when the rolling mill automatic control system is producing a target product at a preset operating speed, determining the strip length at the roll position on the rolling mill main unit based on the uncoiling length of the uncoiler and the strip length between the rolling mill main unit and the uncoiler; determining the strip thickness corresponding to the strip length at the roll position and using this strip thickness as the inlet material thickness at the roll position; and determining a first strip exit thickness difference for the target product based on the inlet linear velocity at the roll position, the outlet linear velocity at the roll position, the inlet material thickness at the roll position, and the preset strip exit thickness of the target product. Therefore, based on actual parameters during product production, the strip exit thickness difference of the product can be accurately calculated, eliminating the limitations of the thickness gauge's accuracy and the influence of external environmental factors, thus improving the product qualification rate and the thickness control accuracy of the automatic thickness control subsystem in the rolling mill automatic control system. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0011] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of an automatic control system for a rolling mill provided in an embodiment of the present disclosure; Figure 2 A flowchart illustrating a method for determining the thickness difference at the exit of strip material, provided in an embodiment of this disclosure; Figure 3 A flowchart illustrating a method for using the thickness difference at the exit of a first strip to achieve an error alarm for a thickness gauge, provided in an embodiment of this disclosure; Figure 4 This is a schematic diagram of a strip exit thickness difference determination device provided in an embodiment of the present disclosure; Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0014] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0015] To improve the accuracy of determining the thickness difference at the strip exit, the following is combined with... Figures 1 to 3 The method for determining the thickness difference at the exit of the strip provided in this disclosure embodiment is described. In this disclosure embodiment, the method for determining the thickness difference at the exit of the strip can be executed by electronic equipment in the automatic control system of the rolling mill. The electronic equipment can be a device in the automatic control system of the rolling mill that has the function of determining the thickness difference at the exit of the strip. Specifically, see [link to documentation]. Figure 1 As shown, the automatic control system of the rolling mill also includes an uncoiler 100, a rolling mill main unit 200, a thickness gauge 300, and a coiler 400.

[0016] Figure 2A flowchart illustrating a method for determining the thickness difference at the exit of a strip provided in an embodiment of this disclosure is shown.

[0017] like Figure 2 As shown, the method for determining the thickness difference at the exit of the strip may include the following steps.

[0018] S210. When the automatic control system of the rolling mill produces the target product at the preset operating speed, the strip length at the position of the roll on the rolling mill main machine is determined based on the uncoiling length and the strip length between the rolling mill main machine and the uncoiling machine.

[0019] In this embodiment, before using the automatic control system of the rolling mill to produce products, the user places the raw materials on the uncoiler of the automatic control system, and the rolling mill host adjusts the running speed to the preset running speed to start the product processing program to produce the target product.

[0020] When the automatic control system of the rolling mill produces the target product at a preset operating speed, the electronic equipment initiates a strip exit thickness difference determination program to periodically determine the strip exit thickness difference. Specifically, this determination is based on the uncoiling length of the uncoiler and the strip length between the rolling mill main unit and the uncoiler, determining the strip length at the position of the rolls on the rolling mill main unit. Optionally, the period of the strip exit thickness difference determination program can be 1ms.

[0021] The preset operating speed refers to the operating speed required for the rolling mill's automatic control system to process the product. Specifically, the preset operating speed is greater than or equal to the standard operating speed of the rolling mill's automatic control system. For example, the standard operating speed is 30 m / min.

[0022] The target product refers to the product manufactured by the automatic control system of the rolling mill using raw materials. Specifically, the target product is a high-performance metal sheet, such as a high-performance new energy ultra-thin aluminum foil product. This product is extremely thin, approaching the measurement limit of the thickness gauge in the automatic control system of the rolling mill, and is easily affected by environmental factors such as temperature, leading to inaccurate measurement of the strip thickness difference at the exit of the high-performance new energy ultra-thin aluminum foil product.

[0023] Here, the feeding length can be understood as the length of the raw material placed between the uncoiler and the main rolling mill. The strip length can be understood as the length between the roll positions of the uncoiler and the main rolling mill.

[0024] The specific implementation method of "determining the strip length at the position of the roll on the rolling mill based on the uncoiling length and the strip length between the rolling mill host and the uncoiling machine" in S210 includes, but is not limited to, the following method: subtracting the uncoiling length from the strip length to obtain the strip length at the position of the roll.

[0025] For better understanding, please continue to refer to [link / reference]. Figure 1The length between point A on the uncoiler and point B on the rolling mill main unit is the uncoiling length of the uncoiler. The length of the strip is the distance from point A on the uncoiler to the roll position C of the rolling mill. Then the strip length at roll position C It can be determined using the following formula:

[0026] Optionally, The length is typically 2-4 meters, depending on the installation location of the uncoiler and the main rolling mill.

[0027] S220. Determine the strip thickness corresponding to the strip length at the roll position, and use the strip thickness as the inlet material thickness at the roll position.

[0028] In this embodiment, before producing products using the automatic control system of the rolling mill, the electronic equipment acquires the rolling data of the previous pass. The rolling data of the previous pass is equal to the rolling data of the current pass, that is, the rolling data of the previous pass is the rolling input data of the current pass. Therefore, the thickness of the strip length corresponding to the roll position included in the rolling data of the previous pass can be used as the strip thickness corresponding to the roll length at the roll position in the current pass.

[0029] The specific implementation method of S220 includes, but is not limited to, the following method: obtaining target length data that matches the strip length at the roll position from the length data included in the pre-acquired rolling data; and using the thickness corresponding to the target length data as the strip thickness.

[0030] Specifically, the pre-acquired rolling data refers to the rolling data of the previous pass, which is equal to the rolling data of the current pass. The rolling data of the previous pass contains multiple sets of data, each set including the strip length and strip thickness at the roll position. The electronic equipment then matches the strip length at the roll position with the strip lengths contained in the pre-acquired rolling data one by one, finds the target length data that matches the strip length at the roll position, and uses the thickness corresponding to the target length data as the strip thickness corresponding to the strip length at the roll position. Furthermore, the strip thickness corresponding to the strip length at the roll position is used as the inlet material thickness at the roll position.

[0031] Optionally, the inlet material thickness at the roll position is denoted as... .

[0032] S230. Determine the first strip exit thickness difference of the target product based on the inlet linear velocity of the roll position, the outlet linear velocity of the roll position, the inlet material thickness of the roll position, and the preset strip exit thickness of the target product.

[0033] In this embodiment, after the strip exit thickness difference determination program is started, the electronic device acquires the inlet linear velocity and the outlet linear velocity of the roll position in real time in each cycle. Then, using the flow rate per second principle followed by the inlet and outlet of the rolling mill main machine, numerical calculations are performed on the inlet linear velocity, the outlet linear velocity, and the inlet material thickness of the roll position to determine the outlet material thickness of the roll position. Furthermore, combined with the preset strip exit thickness of the target product, the first strip exit thickness difference of the target product is determined.

[0034] The specific implementation method of S230 includes, but is not limited to, the following method: multiply the inlet linear velocity of the roll position by the inlet material thickness of the roll position to obtain a first product; divide the first product by the outlet linear velocity of the roll position to obtain the outlet material thickness of the roll position; subtract the preset strip outlet thickness from the outlet material thickness of the roll position to obtain the first strip outlet thickness difference of the target product.

[0035] The preset strip exit thickness can be the target thickness used for production.

[0036] Alternatively, the first strip exit thickness difference of the target product can be determined in the following way:

[0037] in, It is the first strip thickness difference at export for the target product. It is the preset strip export thickness. It is the inlet linear velocity at the roll position. It is the thickness of the inlet material at the roll position. It is the exit linear velocity at the roll position. It is the first product. It is the thickness of the exit material at the roll position.

[0038] Furthermore, after the electronic device determines the first strip exit thickness difference of the target product, it can directly output the first strip exit thickness difference as the strip exit thickness difference measured for the target product.

[0039] In some cases, the thickness difference at the exit of the first strip can be filtered, and the filtered thickness difference at the exit of the strip can be used as the thickness difference at the exit of the strip measured for the target product. Optionally, the filtering method for the thickness difference at the exit of the first strip may include, but is not limited to, the Kalman filtering method, or other filtering methods.

[0040] This disclosure discloses a method for determining strip exit thickness difference, applied to electronic equipment in a rolling mill automatic control system. The rolling mill automatic control system further includes an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler. The method includes: when the rolling mill automatic control system is producing a target product at a preset operating speed, determining the strip length at the roll position on the rolling mill main unit based on the uncoiling length of the uncoiler and the strip length between the rolling mill main unit and the uncoiler; determining the strip thickness corresponding to the strip length at the roll position and using the strip thickness as the inlet material thickness at the roll position; and determining the first strip exit thickness difference of the target product based on the inlet linear velocity at the roll position, the outlet linear velocity at the roll position, the inlet material thickness at the roll position, and the preset strip exit thickness of the target product. Therefore, the strip exit thickness difference of the product can be accurately calculated based on actual parameters during the product production process, eliminating the limitations of the thickness gauge's accuracy and the influence of external environmental factors, improving the product qualification rate and the thickness control accuracy of the automatic thickness control subsystem in the rolling mill automatic control system.

[0041] Furthermore, after determining the first strip exit thickness difference of the target product, the electronic equipment can use this difference as real-time thickness difference feedback from the automatic thickness control subsystem in the automatic control system of the rolling mill. After model calculation by the automatic thickness control subsystem, a control quantity is output to act on the controlled object in the current thickness control mode, thereby achieving closed-loop thickness control of the automatic thickness control subsystem in the automatic control system of the rolling mill. For example, when the control quantity is a position control quantity, it is used for roll gap control; when it is a pressure control quantity, it is used for rolling force adjustment; when it is a tension control quantity, it is used for uncoiler tension adjustment; and when it is a speed control quantity, it is used for rolling mill speed adjustment.

[0042] In this way, based on the first strip exit thickness difference of the target product, closed-loop thickness control of different parameters of the automatic thickness control subsystem in the automatic control system of the rolling mill is realized.

[0043] In another embodiment of this disclosure, where the automatic control system of the rolling mill also includes a thickness gauge, a method for using the thickness difference at the exit of the first strip to realize an error alarm of the thickness gauge is specifically explained.

[0044] Figure 3 The diagram shows a flowchart illustrating a method for using the thickness difference at the exit of a first strip to achieve an error alarm for a thickness gauge, according to an embodiment of this disclosure.

[0045] like Figure 3 As shown, the method for using the thickness difference at the exit of the first strip to realize the error alarm of the thickness gauge may include the following steps.

[0046] S310. Determine the alarm threshold value corresponding to the thickness gauge based on the preset strip exit thickness and preset threshold coefficient.

[0047] In this embodiment, after the electronic equipment in the automatic control system of the rolling mill starts the strip exit thickness difference determination program, the electronic equipment obtains the preset strip exit thickness and the preset threshold coefficient, and uses the preset strip exit thickness and the preset threshold coefficient to determine the alarm threshold value corresponding to the thickness gauge.

[0048] The specific implementation method of S310 includes, but is not limited to, the following method: multiply the preset strip exit thickness by the preset threshold coefficient to obtain the alarm threshold value corresponding to the thickness gauge.

[0049] The preset threshold coefficient can range from 2% to 10%, and can specifically be set to 4%.

[0050] Optionally, the alarm threshold value corresponding to the thickness gauge can be determined by the following method:

[0051] in, This is the alarm threshold value corresponding to the thickness gauge. It is a preset threshold coefficient.

[0052] S320. Calculate the absolute value of the difference between the thickness difference at the exit of the first strip and the thickness difference at the exit of the second strip obtained by measuring the target product with a thickness gauge.

[0053] In this embodiment, after the electronic device initiates the strip exit thickness difference determination procedure, Figure 1 The thickness gauge 300 in the automatic control system of the rolling mill shows periodic measurements of the target product to obtain the thickness difference at the exit of the second strip. Then, the electronic equipment calculates the absolute value of the difference between the thickness difference at the exit of the first strip and the thickness difference at the exit of the second strip.

[0054] Optionally, the absolute value of the difference between the thickness difference at the exit of the first strip and the thickness difference at the exit of the second strip can be determined in the following way:

[0055] in, It is the absolute value of the difference between the thickness difference at the exit of the first strip and the thickness difference at the exit of the second strip. It is the thickness difference of the second strip export.

[0056] S330. Based on the absolute value of the difference and the alarm threshold, determine whether the thickness gauge meets the abnormal alarm conditions.

[0057] The specific implementation method of S330 includes, but is not limited to, the following method: In any current processing cycle of the automatic control system of the rolling mill, if the absolute value of the difference obtained three times consecutively is greater than the alarm threshold, then the thickness gauge is determined to meet the abnormal alarm condition.

[0058] Specifically, the absolute value of the real-time comparison difference of electronic devices. Compared with the alarm threshold value, if In any given processing cycle, if the absolute value of the difference obtained three consecutively is... Alarm threshold If the condition is met, the thickness gauge is determined to meet the abnormal alarm conditions; otherwise, the thickness gauge is determined not to meet the abnormal alarm conditions.

[0059] S340. If the thickness gauge meets the abnormal alarm conditions, generate the abnormal alarm information for the thickness gauge.

[0060] In this embodiment, if the thickness gauge meets the abnormal alarm conditions, an abnormal alarm message for the thickness gauge is generated to issue an alarm for abnormal thickness gauge measurement.

[0061] Therefore, the strip exit thickness difference determined based on actual parameters during the product manufacturing process can be used as the basis for judging abnormalities in thickness gauge measurements, thereby triggering system alarms and timely controlling the product processing process. This reduces product processing losses and avoids problems such as low product quality and finished product qualification rate caused by thickness gauge malfunctions or measurement abnormalities in finished product production stages.

[0062] This disclosure also provides a strip exit thickness difference determination device for implementing the above-described method for determining strip exit thickness difference. This device is configured in an electronic device within the automatic control system of a rolling mill. The electronic device can be a device in the automatic control system of a rolling mill that has a strip exit thickness difference determination function. The automatic control system of the rolling mill also includes an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler. The following describes the process in conjunction with... Figure 4 Please provide an explanation.

[0063] Figure 4 A schematic diagram of a strip exit thickness difference determination device provided in an embodiment of this disclosure is shown.

[0064] like Figure 4 As shown, the strip exit thickness difference determination device may include: The first determining module 410 is used to determine the strip length at the position of the rolls on the main rolling mill based on the uncoiling length of the uncoiler and the strip length between the main rolling mill and the uncoiler when the automatic control system of the rolling mill produces the target product at a preset operating speed. The second determining module 420 is used to determine the strip thickness corresponding to the strip length at the roll position, and to use the strip thickness as the inlet material thickness at the roll position; The third determining module 430 is used to determine the first strip exit thickness difference of the target product based on the inlet linear velocity of the roll position, the outlet linear velocity of the roll position, the inlet material thickness of the roll position, and the preset strip exit thickness of the target product.

[0065] This disclosure discloses a strip exit thickness difference determination device, which is an electronic device configured in the automatic control system of a rolling mill. The automatic control system of the rolling mill also includes an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler. The method includes: when the automatic control system of the rolling mill is producing a target product at a preset operating speed, determining the strip length at the roll position on the rolling mill main unit based on the uncoiling length of the uncoiler and the strip length between the rolling mill main unit and the uncoiler; determining the strip thickness corresponding to the strip length at the roll position and using the strip thickness as the inlet material thickness at the roll position; and determining the first strip exit thickness difference of the target product based on the inlet linear velocity at the roll position, the outlet linear velocity at the roll position, the inlet material thickness at the roll position, and the preset strip exit thickness of the target product. Therefore, based on the actual parameters during the product production process, the strip exit thickness difference of the product can be accurately calculated, eliminating the limitations of the thickness gauge's accuracy and the influence of external environmental factors, improving the product qualification rate and the thickness control accuracy of the automatic thickness control subsystem in the automatic control system of the rolling mill.

[0066] In some embodiments of this disclosure, the first determining module 410 is specifically used for: Subtracting the feed length from the strip length yields the strip length at the roll position.

[0067] In some embodiments of this disclosure, the second determining module 420 includes: The first acquisition unit is used to acquire target length data that matches the strip length at the roll position from the length data contained in the pre-acquired rolling data. The first determining unit is used to take the thickness corresponding to the target length data as the strip thickness corresponding to the strip length at the roll position.

[0068] In some embodiments of this disclosure, the third determining module 430 includes: The second determining unit is used to multiply the inlet linear velocity at the roll position by the inlet material thickness at the roll position to obtain a first product; The third determining unit is used to divide the first product by the exit linear velocity at the roll position to obtain the exit material thickness at the roll position. The fourth determining unit is used to subtract the preset strip exit thickness from the exit material thickness at the roll position to obtain the first strip exit thickness difference of the target product.

[0069] In some embodiments of this disclosure, the device further includes: The fourth determining module is used to determine the alarm threshold value corresponding to the thickness gauge based on the preset strip exit thickness and the preset threshold coefficient. The calculation module is used to calculate the absolute value of the difference between the first strip exit thickness difference and the second strip exit thickness difference obtained by the thickness gauge measuring the target product; The fifth determining module is used to determine whether the thickness gauge meets the abnormal alarm conditions based on the absolute value of the difference and the alarm threshold value. The generation module is used to generate abnormal alarm information for the thickness gauge if the thickness gauge meets the abnormal alarm conditions.

[0070] In some embodiments of this disclosure, the fourth determining module is specifically used for: Multiply the preset strip exit thickness by the preset threshold coefficient to obtain the alarm threshold value corresponding to the thickness gauge.

[0071] In some embodiments of this disclosure, the fourth determining module is specifically used for: In any current processing cycle of the automatic control system of the rolling mill, if the absolute value of the difference obtained three times consecutively is greater than the alarm threshold, then the thickness gauge is determined to meet the abnormal alarm condition.

[0072] It should be noted that, Figure 4 The strip exit thickness difference determination device shown can perform... Figures 2 to 3 The various steps in the method embodiment shown are implemented. Figures 2 to 3 The processes and effects in the method embodiments shown are not described in detail here.

[0073] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure is shown.

[0074] like Figure 5 As shown, the electronic device may include a processor 501 and a memory 502 storing computer program instructions.

[0075] Specifically, the processor 501 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0076] Memory 502 may include a large-capacity storage device for information or instructions. For example, and not limitingly, memory 502 may include a hard disk drive (HDD), a floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 502 may include removable or non-removable (or fixed) media. Where appropriate, memory 502 may be internal or external to the integrated gateway device. In a particular embodiment, memory 502 is a non-volatile solid-state memory. In a particular embodiment, memory 502 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (Electrically Programmable ROM, EPROM), an electrically erasable programmable PROM (EEPROM), an electrically alterable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0077] The processor 501 reads and executes the computer program instructions stored in the memory 502 to perform the steps of the strip exit thickness difference determination method provided in the embodiments of this disclosure.

[0078] In one example, the electronic device may also include a transceiver 503 and a bus 504. Wherein, as... Figure 5 As shown, the processor 501, memory 502 and transceiver 503 are connected via bus 504 and communicate with each other.

[0079] Bus 504 may include hardware, software, or both. For example, and not limitingly, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industrial Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses, or a combination of two or more of these. Where appropriate, bus 504 may include one or more buses. Although specific buses are described and illustrated in the embodiments of this application, this application considers any suitable bus or interconnection.

[0080] The following are embodiments of a computer-readable storage medium provided in this disclosure. This computer-readable storage medium and the strip exit thickness difference determination method of the above embodiments belong to the same inventive concept. For details not described in detail in the embodiments of the computer-readable storage medium, please refer to the embodiments of the strip exit thickness difference determination method described above.

[0081] This embodiment provides a storage medium containing computer-executable instructions. When executed by a computer processor, these instructions are used to perform a method for determining the thickness difference at the exit of a strip. This method is applied to electronic equipment in an automatic control system for a rolling mill. The automatic control system further includes an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler. The method includes: When the automatic control system of the rolling mill produces the target product at a preset operating speed, the strip length at the position of the roll on the rolling mill main machine is determined based on the uncoiling length of the uncoiler and the strip length between the rolling mill main machine and the uncoiler. Determine the strip thickness corresponding to the strip length at the roll position, and use the strip thickness as the inlet material thickness at the roll position; The first strip exit thickness difference of the target product is determined based on the inlet linear velocity of the roll position, the outlet linear velocity of the roll position, the inlet material thickness of the roll position, and the preset strip exit thickness of the target product.

[0082] Of course, the computer-executable instructions provided in the embodiments of this disclosure are not limited to the above-described method operations, but can also perform related operations in the strip exit thickness difference determination method provided in any embodiment of this disclosure.

[0083] Based on the above description of the implementation methods, those skilled in the art can clearly understand that this disclosure can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer cloud platform (which may be a personal computer, server, or network cloud platform, etc.) to execute the strip exit thickness difference determination method provided in the various embodiments of this disclosure.

[0084] Note that the above description is merely a preferred embodiment and the technical principles employed in this disclosure. Those skilled in the art will understand that this disclosure is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this disclosure. Therefore, although this disclosure has been described in detail through the above embodiments, it is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this disclosure, and the scope of this disclosure is determined by the scope of the appended claims.

Claims

1. A method for determining the thickness difference at the exit of strip steel, characterized in that, Electronic equipment used in an automatic control system for a rolling mill, the automatic control system further including an uncoiler, a rolling mill main unit, a thickness gauge, and a coiler, the method comprising: When the automatic control system of the rolling mill produces the target product at a preset operating speed, the uncoiling length of the uncoiler is subtracted from the strip length between the uncoiler and the roll position of the rolling mill main machine to obtain the strip length at the roll position of the rolling mill main machine. The strip length at the roll position is matched one by one with the strip lengths contained in the pre-acquired rolling data to obtain target length data that matches the strip length at the roll position; wherein, the pre-acquired rolling data refers to the rolling data of the previous pass, which is the rolling input data of the current pass; the rolling data of the previous pass contains multiple sets of data, each set of data including the strip length and strip thickness at the roll position; the thickness corresponding to the target length data is taken as the inlet material thickness at the roll position; The electronic device acquires the inlet linear velocity and outlet linear velocity of the roll position in real time for each cycle. The inlet linear velocity of the roll position is multiplied by the inlet material thickness to obtain a first product. The first product is divided by the outlet linear velocity of the roll position to obtain the outlet material thickness of the roll position. The preset strip outlet thickness of the target product is subtracted from the outlet material thickness to obtain the first strip outlet thickness difference of the target product. The preset strip outlet thickness is the target thickness used for production.

2. The method according to claim 1, characterized in that, The automatic control system for the rolling mill also includes a thickness gauge, and the method further includes: The alarm threshold value corresponding to the thickness gauge is determined based on the preset strip exit thickness and the preset threshold coefficient. Calculate the absolute value of the difference between the first strip exit thickness difference and the second strip exit thickness difference obtained by the thickness gauge measuring the target product; Based on the absolute value of the difference and the alarm threshold, determine whether the thickness gauge meets the abnormal alarm conditions; If the thickness gauge meets the abnormal alarm conditions, an abnormal alarm message for the thickness gauge is generated.

3. The method according to claim 2, characterized in that, The step of determining the alarm threshold value corresponding to the thickness gauge based on the preset strip exit thickness and the preset threshold coefficient includes: Multiply the preset strip exit thickness by the preset threshold coefficient to obtain the alarm threshold value corresponding to the thickness gauge.

4. The method according to claim 2, characterized in that, Determining whether the thickness gauge meets the abnormal alarm conditions based on the absolute value of the difference and the alarm threshold includes: In any current processing cycle of the automatic control system of the rolling mill, if the absolute value of the difference obtained three times consecutively is greater than the alarm threshold, then the thickness gauge is determined to meet the abnormal alarm condition.

5. A device for determining the thickness difference at the exit of strip, characterized in that, Electronic equipment configured in the automatic control system of the rolling mill, the automatic control system of the rolling mill also including an uncoiler, a rolling mill main unit, a thickness gauge and a coiler, the device comprising: The first determining module is used to obtain the strip length at the roll position on the main rolling mill by subtracting the uncoiling length of the uncoiler from the strip length between the roll position of the uncoiler and the roll position of the main rolling mill when the automatic control system of the rolling mill produces the target product at a preset operating speed. The second determining module is used to match the strip length at the roll position with the strip length contained in the pre-acquired rolling data one by one to obtain target length data that matches the strip length at the roll position; the rolling data includes multiple sets of data, each set of data including the strip length and strip thickness at the roll position; the thickness corresponding to the target length data is used as the inlet material thickness at the roll position; The third determining module is used to multiply the inlet linear velocity of the roll position by the inlet material thickness to obtain a first product; divide the first product by the outlet linear velocity of the roll position to obtain the outlet material thickness of the roll position; and subtract the preset strip outlet thickness of the target product from the outlet material thickness to obtain the first strip outlet thickness difference of the target product.

6. An electronic device, characterized in that, include: processor; Memory, used to store executable instructions; The processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the method of any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, The storage medium stores a computer program that, when executed by a processor, causes the processor to implement the method described in any one of claims 1-4.

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