Method for quickly carrying out tension closed-loop adjustment and related equipment

Abstract

The invention discloses a method for rapidly conducting tension closed-loop adjustment and related equipment, and relates to the technical field of automatic control in the rolling process, and the method comprises the steps that a tension closed-loop adjustment curve, an integral coefficient, a proportionality coefficient and a change curve of a tension actual value are obtained; obtaining a moment when the tension deviation value is zero, a moment when the tension deviation value is maximum and a moment when the tension deviation value is minimum according to the change curve; according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum and the moment when the tension deviation value is minimum, the tension closed-loop adjustment curve is partitioned, and a tension adjustment area is obtained; the tension adjusting area comprises a first subarea, a second subarea, a third subarea and a fourth subarea; and performing tension adjustment on the tension adjustment area according to a tension deviation value, the integral coefficient and the proportionality coefficient.

Description

Technical Field

[0001] The present application relates to the technical field of automatic control of rolling processes, and in particular to a method for quickly performing closed-loop tension adjustment and related equipment. Background Art

[0002] At present, in steel rolling production, the tension of the strip is very important. Too little tension will cause the strip to lose tension and deviate, while too much tension will cause the strip to break. Even a small fluctuation in tension will often cause fluctuations in product thickness, resulting in scrap or quality degradation. Therefore, closed-loop control of tension is required to keep the tension constant at all times.

[0003] However, in actual production, the requirements for tension regulation are: the smaller the overshoot (i.e. the maximum and minimum values ​​of the tension deviation ΔT), the better, and the shorter the time for the tension deviation ΔT to be adjusted to 0, the better. Fixed integral coefficients and proportional coefficients are obviously difficult to meet the control requirements. At present, there is no appropriate method to solve the above problems. Therefore, it is necessary to propose a method for fast closed-loop tension regulation to at least solve some of the above problems. Summary of the invention

[0004] 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.

[0005] In a first aspect, an embodiment of the present application provides a method for quickly performing closed-loop tension adjustment, the method comprising: obtaining a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of an actual tension value;

[0006] According to the variation curve, the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum are obtained;

[0007] The tension closed-loop adjustment curve is partitioned according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum, to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition;

[0008] The tension of the tension adjustment area is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0009] In one embodiment of the present invention, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient comprises:

[0010] Get the initial integral coefficient and initial proportional coefficient;

[0011] When the tension adjustment area is the first partition, calculating according to the initial integral coefficient and the first preset threshold to obtain an integral coefficient;

[0012] Calculating according to the initial proportionality coefficient and the second preset threshold value to obtain a proportionality coefficient;

[0013] The tension of the first partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0014] In one embodiment of the present invention, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0015] When the tension adjustment area is the second partition, determining whether the tension deviation value is greater than a first preset speed change value;

[0016] If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the third preset threshold to obtain the integral coefficient;

[0017] Calculating according to the initial proportionality coefficient and a third preset threshold value to obtain a proportionality coefficient;

[0018] The tension of the second partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0019] In one embodiment of the present invention, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0020] In the case where the tension adjustment area is the second partition, determining whether the tension deviation value is between zero and a first preset speed change value;

[0021] If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the fourth preset threshold to obtain the integral coefficient;

[0022] Calculating according to the initial proportionality coefficient and a fifth preset threshold value to obtain a proportionality coefficient;

[0023] The tension of the second partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0024] In one embodiment of the present invention, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0025] When the tension adjustment area is the third subarea, the tension deviation value is less than zero, and the tension change trend is less than zero, calculating according to the initial integral coefficient and the first preset threshold to obtain an integral coefficient;

[0026] Calculating according to the initial proportionality coefficient and the second preset threshold value to obtain a proportionality coefficient;

[0027] The tension of the third partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0028] In one embodiment of the present invention, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0029] When the tension adjustment area is the fourth subarea and the tension deviation value is greater than the second preset speed change value, calculating according to the initial integral coefficient and the third preset threshold value to obtain the integral coefficient;

[0030] Calculating according to the initial proportionality coefficient and a third preset threshold value to obtain a proportionality coefficient;

[0031] The tension of the fourth subarea is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0032] In one embodiment of the present invention, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0033] In the case where the tension adjustment area is the fourth subarea, determining whether the tension deviation value is between the second preset speed change value and zero;

[0034] If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the fourth preset threshold to obtain the integral coefficient;

[0035] Calculating according to the initial proportionality coefficient and a fifth preset threshold value to obtain a proportionality coefficient;

[0036] The tension of the fourth subarea is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0037] In a second aspect, the present application proposes a system for quickly performing closed-loop tension adjustment, the system comprising: a data acquisition module, a partitioning module and an adjustment module;

[0038] The data acquisition module is configured to: acquire a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of an actual tension value; and obtain a time when the tension deviation value is zero, a time when the tension deviation value is maximum, and a time when the tension deviation value is minimum according to the change curve;

[0039] The partitioning module is configured to partition the tension closed-loop adjustment curve according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum, to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition;

[0040] The adjustment module is configured to: adjust the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0041] 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 used to implement the steps of a method for quickly performing closed-loop tension adjustment as described in any one of the first aspects above when executing the computer program stored in the memory.

[0042] 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 a method for quickly performing closed-loop tension adjustment according to any one of the first aspects are implemented.

[0043] In summary, a method for quickly performing closed-loop tension adjustment in an embodiment of the present application includes: obtaining a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of the actual tension value; obtaining the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum according to the change curve; partitioning the tension closed-loop adjustment curve according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition; adjusting the tension in the tension adjustment area according to the tension deviation value, the integral coefficient, and the proportional coefficient. By subdividing according to tension characteristics, defining partitions, and using different tension adjustment coefficients, wherein separate partitions are further subdivided as needed, speed change points are set, and different adjustment coefficients are used to make the tension control stable under various conditions, which not only reduces the tension unstable speed reduction time and the number of degraded products, but also avoids belt breakage and downtime.

[0044] The method for rapid closed-loop tension adjustment proposed in the present application, and other advantages, objectives and features of the present application will be reflected in part through the following description, and will also be understood by technicians in this field through research and practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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:

[0046] Figure 1 A schematic diagram of a method for quickly adjusting tension in a closed loop provided in an embodiment of the present application;

[0047] Figure 2 A schematic diagram of the structure of a control system for rapid closed-loop tension adjustment provided in an embodiment of the present application;

[0048] Figure 3 A schematic diagram of the structure of a control electronic device for quickly performing closed-loop tension adjustment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] See also Figure 1 , which is a schematic flow diagram of a method for quickly adjusting tension in a closed loop provided in an embodiment of the present application, which may specifically include:

[0052] S110, obtaining a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of an actual tension value;

[0053] For example, the tension sensor is connected to a data acquisition device to ensure that the actual tension value T can be accurately measured. fb At the same time, if the values ​​of the proportional coefficient and the integral coefficient can be obtained in the system (for example, read from the controller through the communication interface), they are also connected to the data acquisition device. Use data analysis software (such as MATLAB, Python data analysis library, etc.) to import the collected data and draw the tension closed-loop adjustment curve (which can be drawn according to the change of the actual tension value over time).

[0054] S120, obtaining the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum according to the change curve;

[0055] For example, according to the actual tension value T fb The change of is the change curve of the actual tension value, and the moment when the tension deviation is zero, that is, ΔT = T fb -T ref =0 time, ΔT maximum time and ΔT minimum time, where T ref is the set tension value, and ΔT is the tension deviation value. When the tension deviation value is zero, it means that the actual tension value is equal to the reference tension value, and the system is in a balanced state. At this moment, various parameters of the system in a balanced state can be observed, such as proportional coefficient, integral coefficient, control output, etc. At the same time, the adjustment measures and response time taken by the system in the process of reaching a balanced state can also be analyzed. The maximum ΔT moment represents the maximum deviation between the tension state of the system and the expected state. At this moment, the control strategy and response capability of the system in the face of a large tension deviation can be analyzed. For example, the changes in the proportional coefficient and integral coefficient, as well as the size and change trend of the control output can be observed. This helps to evaluate the robustness and anti-interference ability of the control system. The minimum tension deviation moment indicates that the tension state of the system is close to the expected state. At this moment, the fine-tuning ability and stability of the system when it is close to a balanced state can be analyzed. For example, the fine-tuning of the proportional coefficient and integral coefficient, as well as the stability of the control output, can be observed. This helps to evaluate the accuracy and stability of the control system.

[0056] S130, partitioning the tension closed-loop adjustment curve according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition;

[0057] For example, the tension closed-loop adjustment curve is partitioned to obtain the tension adjustment area, which can analyze the behavior and performance of the system under different tension states in more detail. The tension adjustment area includes the first partition, the second partition, the third partition and the fourth partition, each partition represents a different tension adjustment stage, which helps to gain a deeper understanding of the response and function of the control system under different conditions.

[0058] S140: Adjust the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0059] For example, the proportional coefficient and integral coefficient are adjusted according to different tension states, so that the control system can better adapt to different tension conditions and adjust the tension more efficiently and accurately. The tension deviation value, as an important feedback value, reflects the gap between the current actual tension and the target tension. It acts on the tension adjustment area together with the adjusted proportional coefficient and integral coefficient to adjust the tension together, so that the actual tension can approach the target tension as quickly as possible, while reducing the overshoot and speeding up the adjustment speed.

[0060] In summary, the method for quickly performing closed-loop tension adjustment proposed in the embodiment of the present application is to subdivide the tension according to the tension characteristics, define the zones, and adopt different tension adjustment coefficients, wherein the individual zones are further subdivided as needed, and the speed change points are set. Different adjustment coefficients are used to ensure that the tension control under various conditions is stable, which not only reduces the speed reduction time due to unstable tension and the number of degraded products, but also avoids belt breakage and downtime.

[0061] In some examples, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient includes:

[0062] Get the initial integral coefficient and initial proportional coefficient;

[0063] When the tension adjustment area is the first partition, calculating according to the initial integral coefficient and the first preset threshold to obtain an integral coefficient;

[0064] Calculating according to the initial proportionality coefficient and the second preset threshold value to obtain a proportionality coefficient;

[0065] The tension of the first partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0066] For example, the tension deviation ΔT>0, which indicates that the actual tension value is greater than the reference tension value, and the system is in a state of excessive tension. fb The trend of change is increasing: Using the periodic cycle scanning working mode characteristics of PLC, the actual value of the tension in the current sampling period of the program is T fb(t), the actual value of tension in the previous sampling period is T fb (t-1), then ΔT fb =T fb (t)-T fb (t-1)>0. When ΔT>0 and ΔT fb >0, the adjustment strategy of increasing the initial proportional coefficient and the initial integral coefficient is adopted. Specifically, the initial integral coefficient is multiplied by the first preset threshold to become the integral coefficient, and the initial proportional coefficient is multiplied by the second preset threshold to become the proportional coefficient, wherein the first preset threshold and the second preset threshold are both values ​​between 1 and 2, such as 1.8 and 1.5, and the actual values ​​are determined according to the on-site debugging of the adjustment effect. The purpose of this is to enhance the adjustment strength of the control system when the tension is too large and continues to increase.

[0067] In some examples, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0068] When the tension adjustment area is the second partition, determining whether the tension deviation value is greater than a first preset speed change value;

[0069] If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the third preset threshold to obtain the integral coefficient;

[0070] Calculating according to the initial proportionality coefficient and a third preset threshold value to obtain a proportionality coefficient;

[0071] The tension of the second partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0072] For example, the actual tension value T fb Greater than the tension setting value T ref , and T fb The trend of change is decreasing, at this time we need T fb Reduce to T ref Stop at the end and do not lower it further, even below T ref Don't lower it too much. This requires that the tension adjustment should not be too fast and T fb Reduce to T ref To prevent reverse overshoot, the adjustment speed should be reduced near the second zone. To this end, the second zone adopts two-stage adjustment speed and selects the tension setting value T ref 10% of T is the speed change point, which is the first preset speed change value, that is, when ΔT>T ref ×10%, the integral coefficient and proportional coefficient of the original system are adopted; when 0<ΔT<=T ref×10%, the proportional control is exited, the proportional coefficient is equal to 0, and the integral control is moderately slowed down. Specifically: when the tension deviation value ΔT is greater than the target tension (T ref ) is 10%, that is, ΔT>T ref × 10%, and at the same time the actual value change of tension between the current sampling period and the previous sampling period ΔT fb Less than 0, that is, the tension change trend is less than zero, which means that although the current tension is still higher than the target tension by a certain percentage, the tension has a downward trend. In this case, the initial integral coefficient is multiplied by the third preset threshold to become the integral coefficient, and the initial proportional coefficient is multiplied by the third preset threshold to become the proportional coefficient, where the third preset threshold is 1.

[0073] In some examples, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0074] In the case where the tension adjustment area is the second partition, determining whether the tension deviation value is between zero and a first preset speed change value;

[0075] If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the fourth preset threshold to obtain the integral coefficient;

[0076] Calculating according to the initial proportionality coefficient and a fifth preset threshold value to obtain a proportionality coefficient;

[0077] The tension of the second partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0078] Exemplarily, at this time, the tension deviation value is between zero and the first preset speed change value, that is, 0<ΔT<=T ref ×10%, indicating that the difference between the actual tension and the target tension is relatively small, within a certain acceptable range, but still greater than zero, indicating that the actual tension is slightly higher than the target tension. If at the same time the tension change trend is less than zero, ΔT fb <0 means that the actual value of the tension in the current sampling cycle is decreasing compared with the previous sampling cycle, that is, the tension has a downward trend. In this case, the initial integral coefficient is multiplied by the fourth preset threshold to become the integral coefficient, and the initial proportional coefficient is multiplied by the fifth preset threshold to become the proportional coefficient, wherein the fourth preset threshold is 0, and the fourth preset threshold is a value between 0.5 and 1, such as 0.8, which is determined by on-site debugging.

[0079] In some examples, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0080] When the tension adjustment area is the third subarea, the tension deviation value is less than zero, and the tension change trend is less than zero, calculating according to the initial integral coefficient and the first preset threshold to obtain an integral coefficient;

[0081] Calculating according to the initial proportionality coefficient and the second preset threshold value to obtain a proportionality coefficient;

[0082] The tension of the third partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0083] For example, the actual tension value T fb Less than the tension setting value T ref , indicating that the current tension in the system is lower than the desired tension level. And ΔT fb <0, indicating that the tension change trend is decreasing, that is, the actual value of the tension in the current sampling period is decreasing compared with the previous sampling period, which means that the tension has a trend of further decreasing. At this time, we need to adjust the tension quickly to limit T fb To further reduce it, take measures to increase the integral coefficient and proportional coefficient. Specifically: when ΔT<0 (i.e. the tension deviation value is negative) and ΔT fb <0, increase the proportional coefficient K P and the integral coefficient K I The initial integral coefficient is multiplied by the first preset threshold value to become the integral coefficient, and the initial proportional coefficient is multiplied by the second preset threshold value to become the proportional coefficient, wherein the first preset threshold value and the second preset threshold value are both values ​​between 1 and 2, such as 1.8 and 1.5, and the actual values ​​are to be determined according to on-site debugging of the adjustment effect.

[0084] In some examples, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0085] When the tension adjustment area is the fourth subarea and the tension deviation value is greater than the second preset speed change value, calculating according to the initial integral coefficient and the third preset threshold value to obtain the integral coefficient;

[0086] Calculating according to the initial proportionality coefficient and a third preset threshold value to obtain a proportionality coefficient;

[0087] The tension of the fourth subarea is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0088] For example, the actual tension value is less than the set value: T fb Less than T ref , indicating that the current tension in the system is lower than the desired tension level. And T fbThe trend of change is increasing, indicating that the actual value of tension in the current sampling period is increasing compared with the previous sampling period. At this time, we need T fb Increase to T ref Stop at the end, and do not increase further, even if it is greater than T ref Don’t make it too big. The tension adjustment should not be too fast, and T fb Increase to T ref To prevent overshoot in the positive direction, the adjustment speed should be reduced. To this end, the fourth zone adopts two-stage adjustment speed and selects the tension setting value T ref 10% of the speed change point is the negative value of the second preset speed change value, that is, when ΔT<-T ref ×10%, the integral coefficient and proportional coefficient of the original system are adopted; when -T ref ×10%<=ΔT<0, proportional adjustment exits, proportional coefficient K P =0, the integral adjustment is moderately slowed down. Specifically: tension deviation value ΔT<-T ref × 10%, and at the same time ΔT fb >0, the initial integral coefficient is multiplied by the third preset threshold to become the integral coefficient, and the initial proportional coefficient is multiplied by the third preset threshold to become the proportional coefficient, where the third preset threshold is 1.

[0089] In some examples, the step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient further includes:

[0090] In the case where the tension adjustment area is the fourth subarea, determining whether the tension deviation value is between the second preset speed change value and zero;

[0091] If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the fourth preset threshold to obtain the integral coefficient;

[0092] Calculating according to the initial proportionality coefficient and a fifth preset threshold value to obtain a proportionality coefficient;

[0093] The tension of the fourth subarea is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0094] For example, tension deviation-T ref ×10%<=ΔT<0, and at the same time ΔT fb >0, the initial integral coefficient is multiplied by the fourth preset threshold to become the integral coefficient, and the initial proportional coefficient is multiplied by the fifth preset threshold to become the proportional coefficient, wherein the fourth preset threshold is 0, and the fourth preset threshold is a value between 0.5 and 1, such as 0.8, which is determined by on-site debugging.

[0095] After the application is completed, the tension control under various conditions is stable, which not only reduces the time of slowing down due to unstable tension and the number of degraded products, but also avoids the downtime due to belt breakage. On average, each team reduces the slowing down time by about 20 minutes, the output increases by about 2 tons, the belt breaks are reduced by 1 time per month on average, and the waste is reduced by 2 tons. According to the profit of 1,000 yuan per ton of steel, 25 days of production per month, and the waste loss of 1,500 yuan / ton, the economic benefit generated in one year = 2×1000×2×25×12+2×1500×12=1.236 million yuan.

[0096] like Figure 2 As shown, the present application proposes a system for fast closed-loop tension adjustment, the system comprising: a data acquisition module 21, a partitioning module 22 and an adjustment module 23;

[0097] The data acquisition module 21 is configured to: acquire a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient and a change curve of an actual tension value; and obtain a time when the tension deviation value is zero, a time when the tension deviation value is maximum and a time when the tension deviation value is minimum according to the change curve;

[0098] The partitioning module 22 is configured to partition the tension closed-loop adjustment curve according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum, to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition;

[0099] The adjustment module 23 is configured to adjust the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient.

[0100] The effects of the above-mentioned system when applying the above-mentioned method can be found in the description of the above-mentioned method embodiment, which will not be repeated here.

[0101] like Figure 3 As shown, an embodiment of the present application also provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor, and when the processor 320 executes the computer program 311, the steps of any of the above-mentioned methods for rapid closed-loop tension adjustment are implemented.

[0102] Since the electronic device introduced in this embodiment is a device used to implement a device for quickly performing closed-loop tension adjustment 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 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.

[0103] In the specific implementation process, when the computer program 311 is executed by the processor, it can achieve Figure 1 Any implementation manner in the corresponding embodiments.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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 comprising 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.

[0108] 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. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0109] An embodiment of the present application also 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 the process of the LDPC decoding method of the solid-state hard disk controller.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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 quickly adjusting tension in a closed loop, characterized in that: The method comprises: Obtain the tension closed-loop adjustment curve, integral coefficient, proportional coefficient and the change curve of the actual tension value; According to the variation curve, the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum are obtained; The tension closed-loop adjustment curve is partitioned according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum, to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition; The tension of the tension adjustment area is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

2. A method for rapid closed-loop tension adjustment according to claim 1, characterized in that: The step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient comprises: Get the initial integral coefficient and initial proportional coefficient; When the tension adjustment area is the first partition, calculating according to the initial integral coefficient and the first preset threshold to obtain the integral coefficient; Calculating according to the initial proportionality coefficient and the second preset threshold value to obtain a proportionality coefficient; The tension of the first partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

3. A method for rapid closed-loop tension adjustment according to claim 2, characterized in that: The step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient also includes: When the tension adjustment area is the second partition, determining whether the tension deviation value is greater than a first preset speed change value; If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the third preset threshold to obtain the integral coefficient; Calculate the initial proportionality coefficient and the third preset threshold value to obtain the proportionality coefficient; The tension of the second partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

4. A method for rapid closed-loop tension adjustment according to claim 2, characterized in that: The step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient also includes: In the case where the tension adjustment area is the second partition, determining whether the tension deviation value is between zero and a first preset speed change value; If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the fourth preset threshold to obtain the integral coefficient; Calculating according to the initial proportionality coefficient and a fifth preset threshold value to obtain a proportionality coefficient; The tension of the second partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

5. A method for rapid closed-loop tension adjustment according to claim 2, characterized in that: The step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient also includes: When the tension adjustment area is the third subarea, the tension deviation value is less than zero, and the tension change trend is less than zero, calculating according to the initial integral coefficient and the first preset threshold to obtain an integral coefficient; Calculating according to the initial proportionality coefficient and the second preset threshold value to obtain a proportionality coefficient; The tension of the third partition is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

6. A method for rapid closed-loop tension adjustment according to claim 2, characterized in that: The step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient also includes: When the tension adjustment area is the fourth subarea and the tension deviation value is greater than the second preset speed change value, calculating according to the initial integral coefficient and the third preset threshold value to obtain the integral coefficient; Calculate the initial proportionality coefficient and the third preset threshold value to obtain the proportionality coefficient; The tension of the fourth subarea is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

7. A method for rapid closed-loop tension adjustment according to claim 2, characterized in that: The step of adjusting the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient also includes: In the case where the tension adjustment area is the fourth subarea, determining whether the tension deviation value is between the second preset speed change value and zero; If yes and the tension change trend is less than zero, then calculating according to the initial integral coefficient and the fourth preset threshold to obtain the integral coefficient; Calculating according to the initial proportionality coefficient and a fifth preset threshold value to obtain a proportionality coefficient; The tension of the fourth subarea is adjusted according to the tension deviation value, the integral coefficient and the proportional coefficient.

8. A system for rapid closed-loop tension adjustment, characterized in that: The system comprises: a data acquisition module, a partitioning module and an adjustment module; The data acquisition module is configured to: acquire a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of an actual tension value; and obtain a time when the tension deviation value is zero, a time when the tension deviation value is maximum, and a time when the tension deviation value is minimum according to the change curve; The partitioning module is configured to partition the tension closed-loop adjustment curve according to the moment when the tension deviation value is zero, the moment when the tension deviation value is maximum, and the moment when the tension deviation value is minimum, to obtain a tension adjustment area; the tension adjustment area includes a first partition, a second partition, a third partition, and a fourth partition; The adjustment module is configured to: adjust the tension of the tension adjustment area according to the tension deviation value, the integral coefficient and the proportional coefficient.

9. An electronic device, comprising: A memory and a processor, wherein the processor is used to implement the steps of a method for quickly performing closed-loop tension adjustment as described in any one of claims 1 to 7 when executing a 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 a method for quickly performing closed-loop tension adjustment as described in any one of claims 1 to 7 are implemented.

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