Tension roller set load distribution method and related equipment

Abstract

The invention discloses a tension roller set load distribution method and related equipment, and relates to the technical field of cold-rolled strip steel finishing equipment in the metallurgical industry. Calculating the stress value of each roller in the current tension roller group on the basis of the basic parameters in combination with a logarithmic function and an exponential function; and calculating a load distribution coefficient of each roller in the current tension roller group based on the stress value of each roller in the current tension roller group and the basic parameter so as to distribute a torque set value of each roller in the current tension roller group. According to the tension roller set load distribution method provided by the invention, the load of each roller in the tension roller set can be distributed, so that the torque output of each roller is relatively balanced when the optimized load distribution coefficient of each roller is applied to a control program, and a slipping phenomenon and a belt breakage alarm fault do not occur after optimization. The operation stability of the production line is improved, and the frequency of process shutdown caused by slipping of the production line is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cold-rolled strip finishing equipment in the metallurgical industry, and in particular to a tension roller group load distribution method and related equipment. Background Art

[0002] During the operation of the tension roller group, torque control is performed through the tension roller group. Therefore, it is necessary to assign appropriate torque settings to each roller to achieve effective control of the tension.

[0003] The existing method for determining the load distribution coefficient is to distribute the load proportionally based on the power of each roller and the wrap angle of the strip. That is, based on the rated power of the motor of each roller of the tension roller group and the wrap angle of the strip. The effective wrap angle of each roller strip wrap angle is calculated, that is, the wrap angle is divided by 360°. The rated power of each roller motor is multiplied by the effective wrap angle to obtain the effective power of each roller. The ratio of the effective power of each roller to the total effective power of the tension roller group is the ratio of the effective power of each roller to the total effective power of the tension roller group.

[0004] However, the existing load distribution method involves the rated power of each roller, that is, the motor with large power has large output torque, and the output torque between the motors is unbalanced, and the motor with large power always has a particularly large output. In other words, when the tension in the tension area on both sides of the tension roller changes, the load distribution coefficient of the tension roller cannot be adapted accordingly. If the tension setting value of the tension roller is large, it will cause slippage during the operation of the roller group.

[0005] Therefore, it is necessary to propose a tension roller group load distribution method to solve the above problems. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] This application specifically includes the following aspects:

[0008] In a first aspect, the present application provides a tension roller group load distribution method, comprising:

[0009] Get the basic parameters of the current tension roller group;

[0010] Based on the basic parameters combined with logarithmic function and exponential function, the force value of each roller in the current tension roller group is calculated;

[0011] Based on the force value of each roller in the current tension roller group and the basic parameters, the load distribution coefficient of each roller in the current tension roller group is calculated to distribute the torque setting value of each roller in the current tension roller group.

[0012] In a feasible implementation manner, the basic parameters include the wrap angle of the tension roller strip, the tension setting value of the inlet side area of ​​the tension roller group, and the tension setting value of the outlet side area of ​​the tension roller group.

[0013] In a feasible implementation manner, based on the basic parameters combined with a logarithmic function and an exponential function, the force value of each roller in the current tension roller group is calculated, including:

[0014] Obtaining a target logarithmic function value according to a tension setting value of an inlet side region of the tension roller group and a tension setting value of an outlet side region of the tension roller group;

[0015] Obtaining a target exponential function value according to the logarithmic function value and the strip angle of the current roller;

[0016] The force value of the current roller is obtained according to the exponential function value and the force value of the previous roller of the current roller.

[0017] In a feasible implementation manner, based on the basic parameters combined with logarithmic function and exponential function, the force value of each roller in the current tension roller group is calculated, and the specific formula is:

[0018]

[0019] Among them, F en_sp F is the tension setting value of the entrance area of ​​the tension roller group. ex_sp F is the tension setting value of the tension roller group outlet area. 1 is the force on roller No. 1 in the tension roller group, F 2 is the force on roller No. 2 in the tension roller group, F n-2 is the force on the (n-2) roller in the tension roller group, F n-1 is the force on the (n-1) roller in the tension roller group, F n is the force on roller n in the tension roller group, α 1 is the strip wrap angle of No. 1 roller in the tension group, α 2 is the strip wrap angle of No. 2 roller in the tension group, α n-1 is the strip wrap angle of the n-1 roller in the tension group, α n It is the strip wrap angle of roller No. n in the tension group.

[0020] In a feasible implementation manner, based on the force value of each roller in the current tension roller group and the basic parameter, the load distribution coefficient of each roller in the current tension roller group is calculated, including:

[0021] Calculate a first difference value according to a tension setting value of an inlet side area of ​​the tension roller group and a force value of each roller in the current tension roller group;

[0022] Calculating a second difference value according to a tension setting value of an inlet side area of ​​the tension roller group and a tension setting value of an outlet side area of ​​the tension roller group;

[0023] Based on the first difference and the second difference, a load distribution coefficient of each roller is obtained.

[0024] In a feasible implementation manner, based on the force value of each roller in the current tension roller group and the basic parameters, the load distribution coefficient of each roller in the current tension roller group is calculated, and the specific formula is:

[0025]

[0026] Among them, R 1 is the load distribution coefficient of roller No. 1 in the tension roller group, R 2 is the load distribution coefficient of roller No. 2 in the tension roller group, R n-1 is the load distribution coefficient of the (n-1) roller in the tension roller group, R n is the load distribution coefficient of roller n in the tension roller group, F 1 is the force on roller No. 1 in the tension roller group, F 2 is the force on roller No. 2 in the tension roller group, F n-2 is the force on the (n-2) roller in the tension roller group, F n-1 is the force on the (n-1) roller in the tension roller group, F en_sp F is the tension setting value of the entrance area of ​​the tension roller group. ex_sp It is the tension setting value of the exit side area of ​​the tension roller group.

[0027] In a feasible implementation manner, allocating the torque setting value of each roller in the current tension roller group includes:

[0028] The load distribution coefficient of each roller in the current tension roller group is assigned to the tension control system to perform tension distribution.

[0029] In a second aspect, the present application proposes a tension roller group load distribution system, which is applied to the tension roller group load distribution method described in any one of the above embodiments, comprising:

[0030] A basic parameter acquisition module is used to obtain the basic parameters of the current tension roller group;

[0031] A roller force calculation module, used to calculate the force value of each roller in the current tension roller group based on the basic parameters combined with a logarithmic function and an exponential function;

[0032] The module for calculating the load distribution coefficient of each roller is used to calculate the load distribution coefficient of each roller in the current tension roller group based on the force value of each roller in the current tension roller group and the basic parameters, so as to distribute the torque setting value of each roller in the current tension roller group.

[0033] In a third aspect, an electronic device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the tension roller group load distribution method of any one of the first aspects described above when executing the computer program stored in the memory.

[0034] In a fourth aspect, the present application further proposes a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the tension roller group load distribution method of any one of the first aspects are implemented.

[0035] In summary, the tension roller group load distribution method proposed in this application can distribute the load of each roller in the tension roller group, so that the optimized load distribution coefficient of each roller is applied to the control program, and the torque output of each roller is relatively balanced, and no slippage phenomenon and belt break alarm failure have occurred after optimization. The operation stability of the production line is improved, and the number of process stops caused by slippage of the production line is reduced.

[0036] The tension roller group load distribution method proposed in this application, and other advantages, objectives and features of this application will be reflected in part through the following description, and in part will also be understood by technicians in this field through research and practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present specification. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0038] Figure 1 A schematic diagram of a tension roller group load distribution method provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the force applied to the tension roller provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of functional modules of a tension roller group load distribution system provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of an electronic device for load distribution of a tension roller group provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0043] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0044] The present application provides a load distribution method for a tension roller group. The original load distribution method involves the rated power of each roller, that is, the motor with large power has large output torque, and the output torque between the motors is unbalanced, and the output of the motor with large power is always particularly large. If the tension setting value of the tension roller is large, slippage is likely to occur. The present application is based on the Euler formula, ei θ = cos(θ) + isin(θ). In the process of calculating the friction between the tension roller and the strip, the friction force F = fe kα , where f is the applied external force, is the friction coefficient, k is the wrap angle of the strip on the tension roller, and α is the natural logarithm.

[0045] Specifically, the control device for the tension in the area of ​​the straightening machine is in operation on the production line. The No. 7 tension roller of the No. 7 galvanizing line is a tension roller group composed of four rollers, which is the control device for the tension in the area of ​​the straightening machine. During the operation of the production line, the No. 7 tension roller group currently used has problems in load distribution, which causes excessive torque output of roller No. 2, while less torque is distributed to rollers No. 1, No. 3 and No. 4. This situation causes roller No. 2 to slip very easily during operation, and triggers an alarm, eventually causing the production line to stop. In order to solve this problem, the present application provides a method for load distribution of a tension roller group, which redistributes the torque settings of each roller in the tension roller group, that is, through design and calculation, the load distribution coefficient of each roller in the tension roller group is obtained. The purpose of this is to achieve the effect of balanced output of each roller and eliminate accidents caused by roller slippage due to unreasonable load distribution.

[0046] See also Figure 1 , which is a schematic flow diagram of a tension roller group load distribution method provided in an embodiment of the present application, which may specifically include:

[0047] S110, obtaining basic parameters of the current tension roller group.

[0048] In some examples, the basic parameters include the wrap angle of the tension roller strip, the tension setting value of the inlet side area of ​​the tension roller group, and the tension setting value of the outlet side area of ​​the tension roller group.

[0049] For example, Figure 2 As shown, the wrap angle α of each roll strip and the tension setting value (F en_sp ), tension setting value of the outlet area (F ex_sp ) and other parameters to calculate the force of each roller F 1 / F 2 / ... / F n-1 / F n , n is the number of rollers in the tension roller group, n≥2.

[0050] S120, calculating the force value of each roller in the current tension roller group based on the basic parameters combined with a logarithmic function and an exponential function.

[0051] Exemplarily, based on the application of Euler's formula in the calculation of friction between tension rollers and strip steel, combined with the logarithmic function y=ln(x) and the exponential function y=exp(x)=ex, using parameters such as the strip steel wrap angle, the tension setting value of the front / rear area of ​​the tension roller group, the ratio of the tension setting value of the inlet side area of ​​the tension roller group to the tension setting value of the outlet side area is taken, and the logarithmic function (y=ln(x)) is taken, and then multiplied by the proportion of the strip steel wrap angle of this roller, and the exponential function (y=exp(x)=ex) is taken for the product obtained, and the product of the obtained result and the force on the front roller is the force condition of this roller.

[0052] S130. Based on the force value of each roller in the current tension roller group and the basic parameters, calculate the load distribution coefficient of each roller in the current tension roller group to distribute the torque setting value of each roller in the current tension roller group.

[0053] For example, according to the force calculation results of each roller, the tension setting value of the entrance side area of ​​the tension roller group and the force F of each roller itself are calculated. n The difference is divided into the difference between the tension setting value of the inlet side area of ​​the tension roller group and the tension setting value of the outlet side area, and the quotient obtained is the load distribution coefficient of each roller.

[0054] In some examples, the force value of each roller in the current tension roller group is calculated based on the basic parameters combined with a logarithmic function and an exponential function, including:

[0055] Obtaining a target logarithmic function value according to a tension setting value of an inlet side region of the tension roller group and a tension setting value of an outlet side region of the tension roller group;

[0056] Obtaining a target exponential function value according to the logarithmic function value and the strip angle of the current roller;

[0057] The force value of the current roller is obtained according to the exponential function value and the force value of the previous roller of the current roller.

[0058] For example, the ratio of the tension setting value of the inlet side area of ​​the tension roller group to the tension setting value of the outlet side area is F en_sp / F ex_sp Take the logarithmic function of the above ratio (y = ln (x)). Multiply the value obtained by the logarithmic function by the proportion of the angle of the strip steel of this roller. Take the exponential function of the obtained product (y = exp (x) = ex). The product of the obtained result and the force on the front roller is the force condition of this roller. The specific calculation formula is the following formula (1).

[0059] In some examples, based on the basic parameters combined with logarithmic function and exponential function, the force value of each roller in the current tension roller group is calculated, and the specific formula is:

[0060]

[0061] Among them, F en_sp F is the tension setting value of the entrance area of ​​the tension roller group. ex_sp F is the tension setting value of the tension roller group outlet area. 1 is the force on roller No. 1 in the tension roller group, F 2 is the force on roller No. 2 in the tension roller group, F n-2 is the force on the (n-2) roller in the tension roller group, F n-1 is the force on the (n-1) roller in the tension roller group, F n is the force on roller n in the tension roller group, α 1 is the strip wrap angle of No. 1 roller in the tension group, α 2 is the strip wrap angle of No. 2 roller in the tension group, α n-1 is the strip wrap angle of the n-1 roller in the tension group, α n It is the strip wrap angle of roller No. n in the tension group.

[0062] In some examples, the load distribution coefficient of each roller in the current tension roller group is calculated based on the force value of each roller in the current tension roller group and the basic parameter, including:

[0063] Calculate a first difference value according to a tension setting value of an inlet side area of ​​the tension roller group and a force value of each roller in the current tension roller group;

[0064] Calculating a second difference value according to a tension setting value of an inlet side area of ​​the tension roller group and a tension setting value of an outlet side area of ​​the tension roller group;

[0065] Based on the first difference and the second difference, a load distribution coefficient of each roller is obtained.

[0066] For example, according to the force of each roller calculated by the above formula (1), the load distribution coefficient of each roller in the tension roller group is calculated as R 1 / R 2 / ... / R n-1 / R n , where R 1 +R 2 +...+R n-1 +R n = 1. Specifically: calculate the tension setting value of the entrance area of ​​the tension roller group and the force F of each roller itself n The first difference is calculated. The second difference between the tension setting value of the inlet side area of ​​the tension roller group and the tension setting value of the outlet side area is calculated. The quotient obtained by dividing the first difference by the second difference is the load distribution coefficient of each roller, and the specific calculation formula is the following formula (2).

[0067] In some examples, based on the force value of each roller in the current tension roller group and the basic parameter, the load distribution coefficient of each roller in the current tension roller group is calculated, and the specific formula is:

[0068]

[0069] Among them, R 1 is the load distribution coefficient of roller No. 1 in the tension roller group, R 2 is the load distribution coefficient of roller No. 2 in the tension roller group, R n-1 is the load distribution coefficient of the (n-1) roller in the tension roller group, R n is the load distribution coefficient of roller n in the tension roller group, F 1 is the force on roller No. 1 in the tension roller group, F 2 is the force on roller No. 2 in the tension roller group, F n-2 is the force on the (n-2) roller in the tension roller group, F n-1 is the force on the (n-1) roller in the tension roller group, F en_sp F is the tension setting value of the entrance area of ​​the tension roller group. ex_sp It is the tension setting value of the exit side area of ​​the tension roller group.

[0070] In some examples, allocating torque setting values ​​of each roller in the current tension roller group includes:

[0071] The load distribution coefficient of each roller in the current tension roller group is assigned to the tension control system to perform tension distribution.

[0072] Exemplarily, the tension distribution application is performed by assigning various load distribution coefficients to the tension control program.

[0073] In summary, the load distribution method for a tension roller group provided by the present application involves only the front and rear tension setting values ​​of the tension roller group and the wrap angle of the strip on each roller. It is based on the application of the Euler formula in the friction calculation process between the tension roller and the strip, which is different from the load distribution of the traditional tension roller group. Moreover, after implementation, the torque of each roller is relatively balanced and not easy to slip, which is both innovative and practical. The load distribution method for a tension roller group provided by the present application is used to distribute the load of each roller in the tension roller group. The optimized load distribution coefficient of each roller is applied to the control program, and the torque output of each roller is relatively balanced, which is a significant improvement over before. No slipping or broken belt alarm failures have occurred after optimization. The operation stability of the production line has been improved, and the number of process shutdowns due to slipping has been significantly reduced.

[0074] It should be noted that the above embodiments are only the best examples and are not limitations on the implementation methods of the present application.

[0075] Furthermore, the present application also proposes a tension roller group load distribution system, which is applied to any of the above-mentioned embodiments of the tension roller group load distribution method, specifically as follows: Figure 3 FIG. 1 is a functional module diagram of a tension roller group load distribution system proposed in this application, including:

[0076] A basic parameter acquisition module 21 is used to acquire the basic parameters of the current tension roller group;

[0077] A roller force calculation module 22, used to calculate the force value of each roller in the current tension roller group based on the basic parameters combined with a logarithmic function and an exponential function;

[0078] The roller load distribution coefficient calculation module 23 is used to calculate the load distribution coefficient of each roller in the current tension roller group based on the force value of each roller in the current tension roller group and the basic parameters, so as to distribute the torque setting value of each roller in the current tension roller group.

[0079] like Figure 4 As shown, an embodiment of the present application also provides an electronic device 300, including a processor 310, a memory 320, and a computer program 321 stored in the memory 320 and executable on the processor, and when the processor 310 executes the computer program 321, the steps of any of the above-mentioned methods for load distribution of the tension roller group are implemented.

[0080] Since the electronic device introduced in this embodiment is a device used to implement a tension roller group load distribution method in the embodiment of the present application, based on the method introduced in the embodiment of the present application, technical personnel in this field can understand the specific implementation mode of the electronic device of this embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of the present application is not introduced in detail here. As long as the equipment used by technical personnel in this field to implement the method in the embodiment of the present application is within the scope of protection of this application.

[0081] In the specific implementation process, when the computer program 321 is executed by the processor, it can achieve Figure 1 Any implementation manner in the corresponding embodiments.

[0082] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0084] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0085] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0087] An embodiment of the present application further provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes a process of a tension roller group load distribution method.

[0088] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0089] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0090] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0091] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0092] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0093] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0094] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0095] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0096] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A method for distributing load of a tension roller group, characterized in that: include: Get the basic parameters of the current tension roller group; Based on the basic parameters combined with logarithmic function and exponential function, the force value of each roller in the current tension roller group is calculated; Based on the force value of each roller in the current tension roller group and the basic parameters, the load distribution coefficient of each roller in the current tension roller group is calculated to distribute the torque setting value of each roller in the current tension roller group.

2. The tension roller group load distribution method according to claim 1, characterized in that: The basic parameters include the wrap angle of the tension roller strip, the tension setting value of the inlet side area of ​​the tension roller group, and the tension setting value of the outlet side area of ​​the tension roller group.

3. The tension roller group load distribution method according to claim 2, characterized in that: Based on the basic parameters combined with the logarithmic function and the exponential function, the force value of each roller in the current tension roller group is calculated, including: Obtaining a target logarithmic function value according to a tension setting value of an inlet side region of the tension roller group and a tension setting value of an outlet side region of the tension roller group; Obtaining a target exponential function value according to the logarithmic function value and the strip angle of the current roller; The force value of the current roller is obtained according to the exponential function value and the force value of the previous roller of the current roller.

4. The tension roller group load distribution method according to claim 3, characterized in that: Based on the basic parameters combined with the logarithmic function and the exponential function, the force value of each roller in the current tension roller group is calculated, and the specific formula is: Among them, F en_sp F is the tension setting value of the entrance area of ​​the tension roller group. ex_sp is the tension setting value of the tension roller group outlet area, F1 is the force of roller No. 1 in the tension roller group, F2 is the force of roller No. 2 in the tension roller group, and F n-2 is the force on the (n-2) roller in the tension roller group, F n-1 is the force on the (n-1) roller in the tension roller group, F n is the force of roller n in the tension roller group, α1 is the strip angle of roller 1 in the tension group, α2 is the strip angle of roller 2 in the tension group, α n-1 is the strip wrap angle of the n-1 roller in the tension group, α n It is the strip wrap angle of roller No. n in the tension group.

5. The tension roller group load distribution method according to claim 2, characterized in that: Based on the force value of each roller in the current tension roller group and the basic parameters, the load distribution coefficient of each roller in the current tension roller group is calculated, including: Calculate a first difference value according to a tension setting value of an inlet side area of ​​the tension roller group and a force value of each roller in the current tension roller group; Calculating a second difference value according to a tension setting value of an inlet side area of ​​the tension roller group and a tension setting value of an outlet side area of ​​the tension roller group; Based on the first difference and the second difference, a load distribution coefficient of each roller is obtained.

6. The tension roller group load distribution method according to claim 5, characterized in that: Based on the force value of each roller in the current tension roller group and the basic parameters, the load distribution coefficient of each roller in the current tension roller group is calculated, and the specific formula is: Among them, R1 is the load distribution coefficient of roller No. 1 in the tension roller group, R2 is the load distribution coefficient of roller No. 2 in the tension roller group, and R n-1 is the load distribution coefficient of the (n-1) roller in the tension roller group, R n is the load distribution coefficient of roller No. n in the tension roller group, F1 is the force on roller No. 1 in the tension roller group, F2 is the force on roller No. 2 in the tension roller group, and F n-2 is the force on the (n-2) roller in the tension roller group, F n-1 is the force on the (n-1) roller in the tension roller group, F en_sp F is the tension setting value of the entrance area of ​​the tension roller group. ex_sp It is the tension setting value of the exit side area of ​​the tension roller group.

7. The tension roller group load distribution method according to claim 1, characterized in that: Allocating the torque setting value of each roller in the current tension roller group includes: The load distribution coefficient of each roller in the current tension roller group is assigned to the tension control system to perform tension distribution.

8. A tension roller group load distribution system, applied to the tension roller group load distribution method according to any one of claims 1 to 7, characterized in that: include: A basic parameter acquisition module is used to obtain the basic parameters of the current tension roller group; A roller force calculation module, used to calculate the force value of each roller in the current tension roller group based on the basic parameters combined with a logarithmic function and an exponential function; The module for calculating the load distribution coefficient of each roller is used to calculate the load distribution coefficient of each roller in the current tension roller group based on the force value of each roller in the current tension roller group and the basic parameters, so as to distribute the torque setting value of each roller in the current tension roller group.

9. An electronic device, comprising: A memory and a processor, wherein the processor is used to implement the steps of the tension roller group load distribution method according to any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the tension roller group load distribution method according to any one of claims 1 to 7 are implemented.

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