A method for fast tension closed loop regulation and related devices

Abstract

The application discloses a method for quickly performing tension closed-loop regulation and related equipment, relates to the technical field of automatic control of a rolling process, and comprises the following steps: obtaining a tension closed-loop regulation curve, an integral coefficient, a proportional coefficient and a variation curve of a tension actual value; obtaining a moment when a 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 variation curve; dividing the tension closed-loop regulation 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 regulation region; the tension regulation region comprises a first subregion, a second subregion, a third subregion and a fourth subregion; and performing tension regulation on the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient.

Description

Technical Field

[0001] This application relates to the field of automatic control technology for rolling processes, and in particular to a method and related equipment for rapid closed-loop tension adjustment. Background Technology

[0002] Currently, strip tension is crucial in steel rolling production. Insufficient tension can lead to strip misalignment and deviation, while excessive tension can cause the strip to break. Even small fluctuations in tension can cause variations in product thickness, resulting in scrap or quality degradation. Therefore, closed-loop tension control is necessary to maintain a constant tension level.

[0003] However, in actual production, the requirements for tension regulation are: the overshoot (i.e., the maximum and minimum values ​​of the tension deviation ΔT) should be as small as possible, and the time for the tension deviation ΔT to adjust to 0 should be as short as possible. Fixed integral and proportional coefficients are clearly insufficient to meet these control requirements. Currently, there is no suitable method to solve the above problems. Therefore, it is necessary to propose a method for rapid closed-loop tension regulation to at least address some of the aforementioned issues. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] In a first aspect, embodiments of this application provide a method for rapidly performing closed-loop tension adjustment, the method comprising: acquiring a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of the actual tension value;

[0006] The time when the tension deviation is zero, the time when the tension deviation is maximum, and the time when the tension deviation is minimum are obtained from the change curve.

[0007] The tension closed-loop adjustment curve is divided into zones based on the time when the tension deviation is zero, the time when the tension deviation is maximum, and the time when the tension deviation is minimum, to obtain a tension adjustment region; the tension adjustment region includes a first zone, a second zone, a third zone, and a fourth zone;

[0008] 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 region according to the tension deviation value, the integral coefficient, and the proportional coefficient includes:

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

[0011] When the tension adjustment area is the first partition, the integral coefficient is calculated based on the initial integral coefficient and the first preset threshold.

[0012] The proportional coefficient is calculated based on the initial proportional coefficient and the second preset threshold.

[0013] The tension of the first zone is adjusted based on 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 region 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, it is determined whether the tension deviation value is greater than the first preset speed change value;

[0016] If the tension change trend is less than zero, then the integral coefficient is calculated based on the initial integral coefficient and the third preset threshold.

[0017] The proportional coefficient is calculated based on the initial proportional coefficient and the third preset threshold.

[0018] The tension of the second zone is adjusted based on 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 region according to the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0020] When the tension adjustment area is the second partition, it is determined whether the tension deviation value is between zero and the first preset speed change value;

[0021] If the tension change trend is less than zero, then the integral coefficient is calculated based on the initial integral coefficient and the fourth preset threshold.

[0022] The proportional coefficient is calculated based on the initial proportional coefficient and the fifth preset threshold.

[0023] The tension of the second zone is adjusted based on 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 region according to the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0025] When the tension adjustment area is the third zone, the tension deviation value is less than zero, and the tension change trend is less than zero, the integral coefficient is calculated based on the initial integral coefficient and the first preset threshold.

[0026] The proportional coefficient is calculated based on the initial proportional coefficient and the second preset threshold.

[0027] The tension of the third zone is adjusted based on 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 region according to the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0029] When the tension adjustment area is the fourth zone and the tension deviation value is greater than the second preset speed change value, the integral coefficient is calculated based on the initial integral coefficient and the third preset threshold.

[0030] The proportional coefficient is calculated based on the initial proportional coefficient and the third preset threshold.

[0031] The tension of the fourth zone is adjusted based on 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 region according to the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0033] When the tension adjustment area is the fourth zone, it is determined whether the tension deviation value is between the second preset speed change value and zero;

[0034] If the tension change trend is less than zero, then the integral coefficient is calculated based on the initial integral coefficient and the fourth preset threshold.

[0035] The proportional coefficient is calculated based on the initial proportional coefficient and the fifth preset threshold.

[0036] The tension of the fourth zone is adjusted based on the tension deviation value, the integral coefficient, and the proportional coefficient.

[0037] Secondly, this application proposes a system for rapid tension closed-loop adjustment, the system comprising: a data acquisition module, a partitioning module, and an adjustment module;

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

[0039] The partitioning module is configured to partition the tension closed-loop adjustment curve according to the time when the tension deviation value is zero, the time when the tension deviation value is maximum, and the time when the tension deviation value is minimum, to obtain a tension adjustment region; the tension adjustment region 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 based on the tension deviation value, the integral coefficient, and the proportional coefficient.

[0041] Thirdly, an electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program stored in the memory to implement the steps of a method for rapid tension closed-loop adjustment as described in any of the first aspects above.

[0042] Fourthly, this application also proposes a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the steps of a method for rapid tension closed-loop adjustment as described in any of the first aspects.

[0043] In summary, a method for rapid tension closed-loop adjustment according to an embodiment of this application includes: acquiring a tension closed-loop adjustment curve, an integral coefficient, a proportional coefficient, and a change curve of the actual tension value; obtaining the time when the tension deviation is zero, the time when the tension deviation is maximum, and the time when the tension deviation is minimum based on the change curve; dividing the tension closed-loop adjustment curve into regions based on the time when the tension deviation is zero, the time when the tension deviation is maximum, and the time when the tension deviation is minimum to obtain a tension adjustment region; the tension adjustment region includes a first region, a second region, a third region, and a fourth region; and adjusting the tension in the tension adjustment region based on the tension deviation value, the integral coefficient, and the proportional coefficient. By subdividing and dividing the region according to tension characteristics, and using different tension adjustment coefficients, where individual regions can be further subdivided as needed, speed change points can be set, and different adjustment coefficients can be used to ensure stable tension control under various conditions, thereby reducing the speed reduction time due to tension instability and the number of degraded products, and avoiding belt breakage and shutdown.

[0044] The method for rapid closed-loop tension adjustment proposed in this application, along with other advantages, objectives, and features of this application, will be partly apparent from the following description and partly understood by those skilled in the art through study and practice of this application. Attached Figure Description

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit this specification. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0046] Figure 1 This is a flowchart illustrating a method for rapid closed-loop tension adjustment provided in an embodiment of this application.

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

[0048] Figure 3 This is a schematic diagram of a control electronic device structure for rapid tension closed-loop adjustment provided in an embodiment of this application. Detailed Implementation

[0049] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to 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 document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The term "two or more" includes two or more cases.

[0051] Please see Figure 1 This is a flowchart illustrating a method for rapid closed-loop tension adjustment provided in an embodiment of this application, which may specifically include:

[0052] S110. Obtain the tension closed-loop adjustment curve, integral coefficient, proportional coefficient, and the change curve of the actual tension value;

[0053] For example, a tension sensor is connected to a data acquisition device to ensure accurate measurement of the actual tension value T. fb Simultaneously, if the proportional and integral coefficient values ​​can be obtained from the system (e.g., read from the controller via a communication interface), connect them to the data acquisition device. Import the acquired data using data analysis software (such as MATLAB, Python's data analysis library, etc.) and plot the tension closed-loop control curve (which can be plotted based on the actual tension value changing over time).

[0054] S120. Based on the change curve, obtain the time when the tension deviation is zero, the time when the tension deviation is maximum, and the time when the tension deviation is minimum.

[0055] For example, based on the actual tension value T fb The change is the curve of the actual tension value. We select the moment when the tension deviation is zero, i.e., ΔT = T. fb -T ref =Time 0, the time of maximum ΔT, and the time of minimum ΔT, where T ref To define the tension value, ΔT represents the tension deviation. The moment the tension deviation is zero indicates that the actual tension value equals the reference tension value, and the system is in equilibrium. At this moment, various parameters of the system in equilibrium can be observed, such as the proportional coefficient, integral coefficient, and control output. Simultaneously, the adjustment measures and response time taken by the system to reach equilibrium can be analyzed. The moment ΔT is at its maximum represents the greatest deviation between the system's tension state and the desired state. At this moment, the control strategy and response capability of the system when facing a large tension deviation can be analyzed. For example, the changes in the proportional and integral coefficients, as well as the magnitude and trend of the control output, can be observed. This helps to evaluate the robustness and anti-interference capability of the control system. The moment the tension deviation is at its minimum indicates that the system's tension state is close to the desired state. At this moment, the fine-tuning capability and stability of the system as it approaches equilibrium can be analyzed. For example, the fine-tuning of the proportional and integral coefficients, 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. The tension closed-loop adjustment curve is divided into regions based on the time when the tension deviation value is zero, the time when the tension deviation value is maximum, and the time when the tension deviation value is minimum, to obtain a tension adjustment region; the tension adjustment region includes a first region, a second region, a third region, and a fourth region;

[0057] For example, dividing the tension closed-loop adjustment curve into zones allows for a more detailed analysis of the system's behavior and performance under different tension states. The tension adjustment zone includes four sections: a first zone, a second zone, a third zone, and a fourth zone. Each section represents a different tension adjustment stage, facilitating a deeper understanding of the control system's response and function under various 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, adjusting the proportional and integral coefficients according to different tension states aims to enable the control system to better adapt to different tension conditions, thereby regulating tension more efficiently and accurately. The tension deviation value, as an important feedback quantity, reflects the difference between the current actual tension and the target tension. Together with the adjusted proportional and integral coefficients, it acts on the tension regulation range to jointly regulate the tension, allowing the actual tension to approach the target tension as quickly as possible, while reducing overshoot and accelerating the regulation speed.

[0060] In summary, the method for rapid closed-loop tension adjustment proposed in this application subdivides tension characteristics, defines zones, and uses different tension adjustment coefficients. Individual zones can be further subdivided as needed, and speed change points can be set. By using different adjustment coefficients, tension control under various conditions can be stabilized, which reduces the time of speed reduction due to tension instability and the number of downgraded products, and avoids belt breakage and machine shutdown.

[0061] In some examples, the step of adjusting the tension in the tension adjustment region based on the tension deviation value, the integral coefficient, and the proportional coefficient includes:

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

[0063] When the tension adjustment area is the first partition, the integral coefficient is calculated based on the initial integral coefficient and the first preset threshold.

[0064] The proportional coefficient is calculated based on the initial proportional coefficient and the second preset threshold.

[0065] The tension of the first zone is adjusted based on the tension deviation value, the integral coefficient, and the proportional coefficient.

[0066] For example, a tension deviation ΔT > 0 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: Utilizing the periodic cyclic scanning operation mode of the PLC, the actual tension value in the current sampling period of the program is T. fb(t), the actual tension value in the previous sampling period is T. fb (t-1), then ΔT fb =T fb (t)-T fb (t-1)>0. When both ΔT>0 and ΔT<0 are satisfied... fb When the initial tension is greater than 0, an adjustment strategy is adopted to increase the initial proportional and integral coefficients. Specifically, the initial integral coefficient is multiplied by a first preset threshold to obtain the integral coefficient, and the initial proportional coefficient is multiplied by a second preset threshold to obtain the proportional coefficient. Both the first and second preset thresholds are values ​​between 1 and 2, such as 1.8 and 1.5. The actual values ​​need to be determined through on-site debugging based on the adjustment effect. The purpose of this is to enhance the control system's ability to adjust when the tension is too high and continues to increase.

[0067] In some examples, the step of adjusting the tension of the tension adjustment region based on the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

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

[0069] If the tension change trend is less than zero, then the integral coefficient is calculated based on the initial integral coefficient and the third preset threshold.

[0070] The proportional coefficient is calculated based on the initial proportional coefficient and the third preset threshold.

[0071] The tension of the second zone is adjusted based on the tension deviation value, the integral coefficient, and the proportional coefficient.

[0072] For example, the actual tension value T fb Greater than the tension set value T ref And T fb The trend of change is decreasing, at which point we need T. fb Reduce to T ref Stop there and do not lower it further, even if it is below T. ref Don't lower it too much either. This requires that the tension adjustment not be too fast, and T... fb Reduce to T ref The adjustment speed should be reduced in the vicinity to prevent reverse overshoot. Therefore, the second zone uses a two-stage adjustment speed, selecting the tension setpoint T. ref The shift point is 10% of the set value, which is the first preset shift value, i.e., when ΔT > T. ref When the value is ×10%, the integral coefficient and proportional coefficient of the original system are used; when 0 < ΔT <= T refWhen the value is ×10%, proportional control is discontinued, the proportional coefficient equals 0, and integral control is moderately slowed down. Specifically, when the tension deviation value ΔT is greater than the target tension (T... ref When 10% of ), that is, ΔT>T ref ×10%, and simultaneously the actual change in tension value ΔT between the current sampling period and the previous sampling period. fb A value less than 0, meaning the tension change trend is less than zero, indicates that although the current tension is still higher than the target tension by a certain proportion, the tension has a downward trend. In this case, the initial integral coefficient is multiplied by the third preset threshold to obtain the integral coefficient, and the initial proportional coefficient is multiplied by the third preset threshold to obtain the proportional coefficient, where the third preset threshold is 1.

[0073] In some examples, the step of adjusting the tension of the tension adjustment region based on the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0074] When the tension adjustment area is the second partition, it is determined whether the tension deviation value is between zero and the first preset speed change value;

[0075] If the tension change trend is less than zero, then the integral coefficient is calculated based on the initial integral coefficient and the fourth preset threshold.

[0076] The proportional coefficient is calculated based on the initial proportional coefficient and the fifth preset threshold.

[0077] The tension of the second zone is adjusted based on the tension deviation value, the integral coefficient, and the proportional coefficient.

[0078] For example, at this time, the tension deviation value is between zero and the first preset speed change value, that is, 0 < ΔT <= T. ref ×10% indicates that the difference between the actual tension and the target tension is relatively small, within an acceptable range, but still greater than zero, suggesting 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 A value less than 0 indicates that the actual tension value in the current sampling period is decreasing compared to the previous sampling period, meaning the tension is trending downwards. In this case, the initial integral coefficient is multiplied by the fourth preset threshold to obtain the integral coefficient, and the initial proportional coefficient is multiplied by the fifth preset threshold to obtain the proportional coefficient. The fourth preset threshold is 0, and the fourth preset threshold is a value between 0.5 and 1, for example, 0.8, which is determined by on-site debugging.

[0079] In some examples, the step of adjusting the tension of the tension adjustment region based on the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0080] When the tension adjustment area is the third zone, the tension deviation value is less than zero, and the tension change trend is less than zero, the integral coefficient is calculated based on the initial integral coefficient and the first preset threshold.

[0081] The proportional coefficient is calculated based on the initial proportional coefficient and the second preset threshold.

[0082] The tension of the third zone is adjusted based on the tension deviation value, the integral coefficient, and the proportional coefficient.

[0083] For example, the actual tension value T fb Less than the tension set value T ref This indicates that the tension in the current system is lower than the expected tension level. And ΔT fb A value less than 0 indicates a decreasing trend in tension, meaning the actual tension value in the current sampling period is decreasing compared to the previous sampling period. This implies a further decreasing trend in tension. In this case, rapid tension adjustment is needed to limit T. fb To further reduce the tension deviation, measures are taken to increase the integral coefficient and the proportional coefficient. Specifically, this means that when both ΔT < 0 (i.e., the tension deviation is negative) and ΔT fb When <0, increase the proportionality coefficient K. P and integral coefficient K I The measure involves multiplying the initial integral coefficient by a first preset threshold to obtain the integral coefficient, and multiplying the initial proportional coefficient by a second preset threshold to obtain the proportional coefficient. The first and second preset thresholds are both values ​​between 1 and 2, such as 1.8 and 1.5. The actual values ​​need to be determined on-site based on the adjustment effect.

[0084] In some examples, the step of adjusting the tension of the tension adjustment region based on the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0085] When the tension adjustment area is the fourth zone and the tension deviation value is greater than the second preset speed change value, the integral coefficient is calculated based on the initial integral coefficient and the third preset threshold.

[0086] The proportional coefficient is calculated based on the initial proportional coefficient and the third preset threshold.

[0087] The tension of the fourth zone is adjusted based on 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 This indicates that the tension in the current system is lower than the expected tension level. And T fbThe trend of change is increasing, indicating that the actual tension value in the current sampling period is increasing compared to the previous sampling period. At this point, we need T... fb Increase to T ref Stop increasing it afterward, and do not increase it further, even if it exceeds T. ref Don't adjust too much. The tension adjustment should not be too rapid, and T... fb Increase to T ref The adjustment speed should be reduced in the vicinity to prevent positive overshoot. Therefore, the fourth zone uses a two-stage adjustment speed, selecting a tension setpoint T. ref The shift point is 10% of the set value, and its negative value is the second preset shift value, i.e., when ΔT < -T. ref When ×10%, the integral coefficient and proportional coefficient of the original system are adopted; when -T ref When ×10% <= ΔT < 0, proportional adjustment is deactivated, and the proportional coefficient K is adjusted. P =0, integral adjustment is moderately slowed down. Specifically: tension deviation value ΔT < -T ref ×10%, and simultaneously ΔT fb When the value is greater than 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 region based on the tension deviation value, the integral coefficient, and the proportional coefficient further includes:

[0090] When the tension adjustment area is the fourth zone, it is determined whether the tension deviation value is between the second preset speed change value and zero;

[0091] If the tension change trend is less than zero, then the integral coefficient is calculated based on the initial integral coefficient and the fourth preset threshold.

[0092] The proportional coefficient is calculated based on the initial proportional coefficient and the fifth preset threshold.

[0093] The tension of the fourth zone is adjusted based on 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 When the value is greater than 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. 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 this application was completed, tension control under various conditions became stable, reducing both the time spent on deceleration due to tension instability and the number of defective products, while also avoiding downtime due to belt breakage. On average, each shift reduced deceleration time by about 20 minutes, increased output by about 2 tons, reduced belt breakage by one incident per month, and reduced scrap by 2 tons. Based on a profit of 1,000 yuan per ton of steel, 25 production days per month, and a scrap loss of 1,500 yuan per ton, the annual economic benefit could be calculated as 2 × 1,000 × 2 × 25 × 12 + 2 × 1,500 × 12 = 1,236,000 yuan.

[0096] like Figure 2 As shown, this application proposes a system for rapid 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 the tension closed-loop adjustment curve, integral coefficient, proportional coefficient, and the change curve of the actual tension value; and obtain the time when the tension deviation is zero, the time when the tension deviation is maximum, and the time when the tension deviation is minimum based on the change curve.

[0098] The partitioning module 22 is configured to partition the tension closed-loop adjustment curve according to the time when the tension deviation value is zero, the time when the tension deviation value is maximum, and the time when the tension deviation value is minimum, to obtain a tension adjustment region; the tension adjustment region 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 applying the aforementioned method in the above system can be found in the description of the aforementioned method embodiments, and will not be repeated here.

[0101] like Figure 3 As shown, this application embodiment 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. When the processor 320 executes the computer program 311, it implements the steps of any of the above-described methods for rapid tension closed-loop adjustment.

[0102] Since the electronic device described in this embodiment is the device used to implement the device for rapid tension closed-loop adjustment in the embodiments of this application, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any device used by those skilled in the art to implement the method in the embodiments of this application falls within the scope of protection of this application.

[0103] In practical implementation, when the computer program 311 is executed by the processor, it can achieve the following: Figure 1 Any of the corresponding implementation methods in the embodiments.

[0104] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0105] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.

[0106] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0107] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0108] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0109] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to execute the LDPC decoding method of a solid-state drive controller.

[0110] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0111] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0112] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

[0113] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0114] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0115] If the integrated unit is implemented as 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 this application, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0116] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

[0117] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.

[0118] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.

Claims

1. A method for fast tension closed loop regulation, characterized in that, The method comprises: obtaining a tension closed-loop regulation curve, an integral coefficient, a proportional coefficient and a variation curve of a tension actual value; obtaining a moment when a 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 variation curve; dividing the tension closed-loop regulation 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 regulation region; the tension regulation region comprises a first sub-region, a second sub-region, a third sub-region and a fourth sub-region; regulating tension in the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient.

2. The method of quickly performing tension closed loop regulation of claim 1, wherein, The step of regulating tension in the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient comprises: obtaining an initial integral coefficient and an initial proportional coefficient; in a case where the tension regulation region is the first sub-region, calculating according to the initial integral coefficient and a first preset threshold to obtain an integral coefficient; calculating according to the initial proportional coefficient and a second preset threshold to obtain a proportional coefficient; regulating tension in the first sub-region according to a tension deviation value, the integral coefficient and the proportional coefficient.

3. A method of quickly performing tension closed loop regulation according to claim 2, characterized in that, The step of regulating tension in the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient further comprises: in a case where the tension regulation region is the second sub-region, judging whether a tension deviation value is greater than a first preset variable value; if yes and a tension variation trend is less than zero, calculating according to the initial integral coefficient and a third preset threshold to obtain an integral coefficient; calculating according to the initial proportional coefficient and a third preset threshold to obtain a proportional coefficient; regulating tension in the second sub-region according to a tension deviation value, the integral coefficient and the proportional coefficient.

4. The method of quickly performing tension closed loop regulation of claim 2, wherein, The step of regulating tension in the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient further comprises: in a case where the tension regulation region is the second sub-region, judging whether a tension deviation value is between zero and a first preset variable value; if yes and a tension variation trend is less than zero, calculating according to the initial integral coefficient and a fourth preset threshold to obtain an integral coefficient; calculating according to the initial proportional coefficient and a fifth preset threshold to obtain a proportional coefficient; regulating tension in the second sub-region according to a tension deviation value, the integral coefficient and the proportional coefficient.

5. The method of quickly performing tension closed loop regulation of claim 2, wherein, The step of regulating tension in the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient further comprises: in a case where the tension regulation region is the third sub-region, a tension deviation value is less than zero and a tension variation trend is less than zero, calculating according to the initial integral coefficient and a first preset threshold to obtain an integral coefficient; calculating according to the initial proportional coefficient and a second preset threshold to obtain a proportional coefficient; regulating tension in the third sub-region according to a tension deviation value, the integral coefficient and the proportional coefficient.

6. The method of quickly performing tension closed loop regulation of claim 2, wherein, The step of regulating tension in the tension regulation region according to a tension deviation value, the integral coefficient and the proportional coefficient further comprises: In a case where the tension adjustment region is the fourth partition and the tension deviation value is greater than the second preset variable value, the initial integral coefficient and the third preset threshold are calculated to obtain an integral coefficient; The initial proportional coefficient and the third preset threshold are calculated to obtain a proportional coefficient; The fourth partition is adjusted in tension according to the tension deviation value, the integral coefficient, and the proportional coefficient.

7. The method of quickly performing tension closed loop regulation of claim 2, wherein, The step of adjusting the tension adjustment region in tension according to the tension deviation value, the integral coefficient, and the proportional coefficient further includes: In a case where the tension adjustment region is the fourth partition, it is determined whether the tension deviation value is between the second preset variable value and zero; If yes and the tension change trend is less than zero, the initial integral coefficient and the fourth preset threshold are calculated to obtain an integral coefficient; The initial proportional coefficient and the fifth preset threshold are calculated to obtain a proportional coefficient; The fourth partition is adjusted in tension according to the tension deviation value, the integral coefficient, and the proportional coefficient.

8. A system for fast tension closed loop regulation, characterized by, The system includes a data acquisition module, a partition 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 a tension actual value, and to obtain a time when a 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 partition module is configured to partition the tension closed-loop adjustment curve according to the time when the tension deviation value is zero, the time when the tension deviation value is maximum, and the time when the tension deviation value is minimum to obtain a tension adjustment region; the tension adjustment region includes a first partition, a second partition, a third partition, and a fourth partition. The adjustment module is configured to adjust the tension adjustment region in tension according to a tension deviation value, an integral coefficient, and a proportional coefficient.

9. An electronic device comprising: A memory and a processor, wherein the processor is configured to implement the steps of the method for quickly adjusting tension in a closed loop according to any one of claims 1-7 when executing a computer program stored in the memory.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is configured to implement the steps of the method for quickly adjusting tension in a closed loop according to any one of claims 1-7 when executed by the processor.

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