Stretch control method, apparatus, device, and medium

Abstract

This application provides a stretching control method, apparatus, equipment, and medium, relating to the field of welding strip processing. The method includes: a main control module acquiring multiple initialization parameters and sending control signals to a transmission module; the transmission module determining a transmission speed based on the control signals, and using the transmission speed to drive the welding strip along the conveying path; a detection module acquiring the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during transmission and sending them to the main control module; the main control module determining the theoretical transmission length based on a preset fusion algorithm, according to the feeding distance, stretching distance, and cumulative deviation distance; compensating the theoretical transmission length based on the actual tensile force value, cross-sectional area, and initialization parameters to obtain the actual transmission length; if the actual transmission length is greater than or equal to the preset transmission length, sending a trigger signal to a cutting mechanism to trigger the cutting of the welding strip. This application achieves high-precision detection and adjustment of the photovoltaic welding strip length.

Description

Technical Field

[0001] This invention relates to the field of welding strip processing, and more specifically, to a stretching control method, apparatus, equipment, and medium. Background Technology

[0002] In the photovoltaic industry, solder ribbon is a key material for encapsulating solar cells. The precise control of its cutting length is crucial for the welding performance and cost control of solar cells. Existing photovoltaic solder ribbon cutting methods usually measure the length of the solder ribbon after it has been stretched, resulting in low cutting accuracy and making it difficult to meet the high-precision production requirements. Summary of the Invention

[0003] In view of the above, the purpose of this application is to overcome the shortcomings of the prior art and provide a tensile control method, apparatus, device, and medium. This application provides the following technical solution: In a first aspect, this application provides a stretching control method applied to a stretching control device, the device comprising: a main control module, a transmission module, a detection module, and a cutting mechanism, wherein the main control module is electrically connected to the transmission module, the detection module, and the cutting mechanism respectively; the method comprises: The main control module acquires multiple initialization parameters and sends control signals to the transmission module according to each initialization parameter; The transmission module determines the transmission speed according to the control signal, and drives the welding strip to be transmitted along the conveying path at the transmission speed; The detection module acquires the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and sends the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module. The main control module determines the theoretical transmission length based on a preset fusion algorithm, according to the feeding distance, the stretching distance, and the cumulative deviation distance; it compensates the theoretical transmission length based on the actual stretching force, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; it determines whether the actual transmission length is greater than or equal to the preset transmission length, and if so, it sends a trigger signal to the cutting mechanism to trigger the cutting of the welding strip.

[0004] In one embodiment, each of the initialization parameters includes: a standard tensile force value, the elastic modulus of the welding strip, and a nonlinear coefficient. The compensation of the theoretical transmission length based on the actual tensile force value, the cross-sectional area, and each of the initialization parameters includes: determining a tension compensation coefficient based on the actual tensile force value, the cross-sectional area, the standard tensile force value, and the elastic modulus; performing tension compensation on the theoretical transmission length according to the tension compensation coefficient to obtain an initial corrected length; and performing nonlinear tensile compensation on the initial corrected length based on the actual tensile force value, the standard tensile force value, and the nonlinear coefficient to obtain the theoretical transmission length.

[0005] In one embodiment, the tensile compensation coefficient is determined based on the actual tensile force, the cross-sectional area, the standard tensile force, and the elastic modulus, using the following formula:

[0006] in, This represents the tensile compensation coefficient. This indicates the standard tensile force value. This indicates the actual tensile force value. This represents the elastic modulus. This represents the cross-sectional area; The tension compensation for the theoretical transmission length based on the tension compensation coefficient is calculated using the following formula:

[0007] in, This indicates the initial correction length. This represents the theoretical transmission length.

[0008] In one embodiment, the nonlinear tensile compensation of the initial correction length based on the actual tensile force value, the indicated standard tensile force value, and the nonlinear coefficient is calculated using the following formula:

[0009] in, and These respectively represent the nonlinear coefficients. This indicates the actual transmission length.

[0010] In one embodiment, the initialization parameter further includes a preset stretching ratio, and the method further includes: the main control module determining the actual stretching ratio based on the actual transmission length and the stretching distance; determining whether the difference between the actual stretching ratio and the preset stretching ratio falls within a preset difference range; if not, adjusting the standard stretching force value based on the difference between the actual stretching ratio and the preset stretching ratio.

[0011] In one embodiment, the actual stretching ratio is determined based on the actual transmission length and the stretching distance, using the following formula:

[0012] in, This indicates the stretching distance.

[0013] In one embodiment, the initialization parameter further includes a target stretching length, and the method further includes: the main control module adjusting the nonlinear coefficient based on the length deviation between the actual transmission length and the target stretching length.

[0014] Secondly, this application provides a stretching control device, the device comprising: a main control module, a transmission module, a detection module, and a cutting mechanism, wherein the main control module is electrically connected to the transmission module, the detection module, and the cutting mechanism respectively; The main control module is used to acquire multiple initialization parameters and send control signals to the transmission module according to each initialization parameter; The transmission module is used to determine the transmission speed according to the control signal, and drive the welding strip to be transmitted along the conveying path at the transmission speed; The detection module is used to acquire the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and to send the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module. The main control module is used to determine the theoretical transmission length based on the feeding distance, the stretching distance, and the cumulative deviation distance according to a preset fusion algorithm; to compensate the theoretical transmission length based on the actual stretching force value, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; and to determine whether the actual transmission length is greater than or equal to the preset transmission length. If so, a trigger signal is sent to the cutting mechanism to trigger the cutting of the welding strip.

[0015] Thirdly, this application provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the computer program executes the stretching control method described in the first aspect when it is run on the processor.

[0016] Fourthly, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the stretching control method described in the first aspect.

[0017] The stretching control method, apparatus, equipment, and medium provided in this application acquire multiple initialization parameters through the main control module and send control signals to the transmission module according to each initialization parameter. The transmission module determines the transmission speed according to the control signals and drives the welding strip to be transmitted along the conveying path at the transmission speed. The detection module acquires the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process and sends the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module. The main control module determines the theoretical transmission length based on the feeding distance, stretching distance, and cumulative deviation distance according to a preset fusion algorithm. The theoretical transmission length is compensated based on the actual tensile force value, cross-sectional area, and each initialization parameter to obtain the actual transmission length. It determines whether the actual transmission length is greater than or equal to the preset transmission length. If so, a trigger signal is sent to the cutting mechanism to trigger the cutting of the welding strip. This achieves high-precision detection and adjustment of the photovoltaic welding strip length, meets the high-precision requirements of photovoltaic module mass production, and improves the welding performance and production efficiency of the welding strip.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A flowchart of the stretching control method provided in an embodiment of this application is shown; Figure 2 A schematic diagram of the tensile control device provided in an embodiment of this application is shown; Figure 3 Another structural schematic diagram of the tension control device provided in an embodiment of this application is shown; Figure 4 Another schematic flowchart of the stretching control method provided in this application embodiment is shown; Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown.

[0021] Explanation of key component symbols: 200-Stretch control device; 210-Main control module; 220-Transmission module; 221-Driving wheel; 222-Driven wheel; 230-Detection module; 231-Stretch sensor; 232-Laser rangefinder; 233-Vision sensor; 240-Cutting mechanism; 500-Electronic equipment; 501-Transceiver; 502-Processor; 503-Memory. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Example 1 Existing methods for cutting solder strips have low cutting accuracy. For more information, please refer to [link / reference needed]. Figure 1 This application provides a stretching control method, applicable to, for example... Figure 2 The stretching control device 200 shown includes: a main control module 210, a transmission module 220, a detection module 230, and a cutting mechanism 240. The main control module 210 is electrically connected to the transmission module 220, the detection module 230, and the cutting mechanism 240, respectively. The method includes steps S110 to S140.

[0026] In step S110, the main control module 210 acquires multiple initialization parameters and sends control signals to the transmission module 220 according to each initialization parameter.

[0027] In this embodiment, the main control module 210 obtains multiple initialization parameters through interactive devices such as a touch screen, such as the target stretching length of the welding strip, the standard tensile force value, the elastic modulus of the welding strip, the preset stretching rate, etc. Based on these initialization parameters, it determines the transmission speed that is suitable for the mass production rhythm and sends control signals including instructions such as transmission speed and start-up timing to the transmission module 220, so that the transmission module 220 drives the welding strip to be transmitted stably along the conveying path.

[0028] In step S120, the transmission module 220 determines the transmission speed according to the control signal, and drives the welding strip to be transmitted along the conveying path at the transmission speed.

[0029] After receiving the control signal, the transmission module 220 determines a transmission speed suitable for the photovoltaic ribbon production rhythm, such as 1 m / s, based on the control signal. Then, the transmission module 220 transmits the ribbon according to this speed. For details, please refer to... Figure 3 , Figure 3 Another structural schematic diagram of the tension control device 200 provided in the embodiment of this application is shown. The transmission module 220 includes a drive wheel 221 and a driven wheel 222. The drive wheel 221 rotates according to the transmission speed and drives the welding strip to be transmitted along a preset conveying path by the friction of the welding strip.

[0030] In step S130, the detection module 230 acquires the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and sends the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module 210.

[0031] In this embodiment, please refer to Figure 3 The detection model includes: a tension sensor 231, a hybrid absolute encoder, a laser rangefinder 232, and a vision sensor 233. The position of the hybrid absolute encoder is... Figure 3 (Not shown in the diagram). Tension sensor 231 is used to collect the actual force generated by the stretching of the welding strip in real time, i.e., the actual tensile force value; hybrid absolute encoder is used to obtain the feeding distance of the welding strip; laser rangefinder 232 is used to measure the extension length of the welding strip due to the metal's ductility, i.e., the stretching distance; vision sensor 233 is used to identify the offset of preset visual marks on the surface of the welding strip through image processing algorithms, and to determine the total offset between the welding strip's transmission trajectory and the preset transmission path, i.e., the cumulative deviation distance, by combining the cumulative mark deviation number. In addition, the detection module 230 also calls pre-stored specification parameters matching the currently processed welding strip to calculate and obtain the cross-sectional area of ​​the welding strip.

[0032] In step S140, the main control module 210 determines the theoretical transmission length based on the feeding distance, the stretching distance, and the cumulative deviation distance according to a preset fusion algorithm; it compensates the theoretical transmission length based on the actual stretching force value, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; it determines whether the actual transmission length is greater than or equal to the preset transmission length, and if so, it sends a trigger signal to the cutting mechanism 240 to trigger the cutting of the welding strip.

[0033] In this embodiment, the preset fusion algorithm is an unscented Kalman filter algorithm, and the main control module 210 includes a central processing unit 502. Specifically, the main control module 210 inputs the feeding distance, stretching distance, and cumulative deviation distance received from the detection module 230 into the unscented Kalman filter algorithm, and generates Sigma through the UT transformation of the algorithm. After filtering out noise such as ambient light interference and oil stain misidentification by reconstructing the point set and probability density function, the theoretical transmission length is calculated by fusing the data to eliminate the basic measurement error. Next, the main control module 210 combines the actual tensile force value sent by the detection module 230, the cross-sectional area of ​​the solder strip, and the standard tensile force and elastic modulus of the solder strip material in the initialization parameters to first calculate the tensile compensation coefficient to correct the influence of tensile deformation on the length. Then, nonlinear tensile compensation is performed through a quadratic function to further correct the theoretical transmission length, and finally, the actual transmission length that accurately reflects the true transmission state of the solder strip is obtained. Subsequently, the main control module 210 compares the actual transmission length with the preset transmission length to determine whether the actual transmission length is greater than or equal to the preset transmission length. If the condition is met, a trigger signal is sent to the cutting mechanism 240, such as a pneumatic shear, to trigger the cutting mechanism 240 to complete the cutting operation of the current solder strip, ensuring that the cutting length meets the high precision requirements of photovoltaic module production.

[0034] In one implementation, please refer to Figure 4 Each of the initialization parameters includes: standard tensile force value, elastic modulus of the welding strip and nonlinear coefficient. The compensation of the theoretical transmission length based on the actual tensile force value, the cross-sectional area and each of the initialization parameters includes steps S141 to S143.

[0035] Step S141: Determine the tensile compensation coefficient based on the actual tensile force value, the cross-sectional area, the standard tensile force value, and the elastic modulus.

[0036] In this embodiment, the main control module 210 calculates the tensile compensation coefficient based on the actual tensile force value, the cross-sectional area of ​​the weld strip, and the standard tensile force value and elastic modulus in the initialization parameters obtained by the detection module 230. This coefficient is used to quantify the degree of influence of the difference between the actual tensile force and the standard tensile force on the length of the weld strip. For example, when the actual tensile force is greater than the standard value, the coefficient will reflect the additional deformation of the weld strip caused by overstretching, providing a quantitative basis for subsequent correction.

[0037] Step S142: Perform tension compensation on the theoretical transmission length according to the tension compensation coefficient to obtain the initial corrected length.

[0038] It is understandable that if the actual tensile force deviates from the standard tensile force, it will cause additional elastic deformation of the welding strip. The theoretical transmission length does not include the effect of this deformation. The theoretical transmission length is adjusted by the tensile compensation coefficient to obtain the length value after the tension deviation is initially eliminated, which is the initial correction length.

[0039] Step S143: Based on the actual tensile force value, the standard tensile force value shown, and the nonlinear coefficient, perform nonlinear tensile compensation on the initial correction length to obtain the theoretical transmission length.

[0040] In this embodiment, since the welding strip is made of metal, its deformation will deviate from the linear law when the tensile force is large. Therefore, the main control module 210 needs to combine the nonlinear coefficient in the initialization parameters (the nonlinear characteristic parameter of the material calibrated by experiments) and the deviation between the actual tensile force value and the standard tensile force value to further correct the initial correction length. Specifically, the length deviation caused by nonlinear deformation is calculated by using nonlinear models such as quadratic functions and compensated into the initial correction length. Finally, the length value that eliminates the influence of tension linear deviation and nonlinear deformation is obtained, which is the actual transmission length that can accurately reflect the true state of the welding strip.

[0041] In one embodiment, the tensile compensation coefficient is determined based on the actual tensile force, the cross-sectional area, the standard tensile force, and the elastic modulus, using the following formula:

[0042] in, This represents the tensile compensation coefficient. This indicates the standard tensile force value. This indicates the actual tensile force value. This represents the elastic modulus. This represents the cross-sectional area; The tension compensation for the theoretical transmission length based on the tension compensation coefficient is calculated using the following formula:

[0043] in, This indicates the initial correction length. This represents the theoretical transmission length.

[0044] In this embodiment, based on the elastic deformation law of material mechanics, the nonlinear deviation of tensile force is transformed into a linear compensation coefficient of length, establishing a quantitative correlation between force, deformation and length, and ultimately achieving precise correction of the welding strip transmission length.

[0045] In one embodiment, the nonlinear tensile compensation of the initial correction length based on the actual tensile force value, the indicated standard tensile force value, and the nonlinear coefficient is calculated using the following formula:

[0046] in, and These respectively represent the nonlinear coefficients. This indicates the actual transmission length.

[0047] It is understandable that, as an ideal elastic body, the deformation of metal welding strip basically follows a linear relationship when the tensile force is small. However, when the tensile force approaches the tensile limit or exceeds a certain range, the deformation will exhibit nonlinear characteristics. At this point, linear tension compensation alone cannot completely eliminate the error. Therefore, a nonlinear coefficient needs to be introduced. and A quadratic function model is constructed to further compensate for the initial correction length.

[0048] In one embodiment, the initialization parameter further includes a preset stretching ratio, and the method further includes: the main control module 210 determining the actual stretching ratio based on the actual transmission length and the stretching distance; determining whether the difference between the actual stretching ratio and the preset stretching ratio falls within a preset difference range; if not, adjusting the standard stretching force value based on the difference between the actual stretching ratio and the preset stretching ratio.

[0049] In this embodiment, the main control module 210 calculates the actual stretching rate of the solder strip based on the calculated actual transmission length and the stretching distance obtained by the detection module 230, which is the elongation ratio of the actual stretched length relative to the original length. Then, it compares the actual stretching rate with the preset stretching rate set in the initialization parameters, calculates the difference between the two, and determines whether the difference is within a preset reasonable range, such as ±0.2%. If the difference exceeds this range, it indicates that the current stretching degree does not meet expectations. The main control module 210 adjusts the standard stretching force value accordingly based on the deviation between the actual stretching rate and the preset stretching rate, so as to correct the subsequent stretching degree of the solder strip by changing the stretching force, so that the actual stretching rate is stable within the preset range, and the welding performance of the solder strip is guaranteed.

[0050] In one embodiment, the actual stretching ratio is determined based on the actual transmission length and the stretching distance, using the following formula:

[0051] in, This indicates the stretching distance.

[0052] Elongation ratio is a core indicator of the degree of plastic deformation in metallic materials, defined as the ratio of the length after stretching to the original length. In this embodiment, the ratio of the actual transmission length to the stretching distance is used to quantify the actual deformation ratio of the welding strip during the stretching process.

[0053] In one embodiment, the initialization parameter further includes a target stretching length, and the method further includes: the main control module 210 adjusting the nonlinear coefficient based on the length deviation between the actual transmission length and the target stretching length.

[0054] In this embodiment, the main control module 210 calculates the difference between the actual transmission length and the target stretching length set in the initialization parameters, and adjusts the nonlinear coefficient based on this deviation. For example, if the deviation between the actual transmission length and the target stretching length is large, it indicates that the current nonlinear coefficient is not accurately quantifying the nonlinear deformation characteristics of the solder strip. By adjusting the nonlinear coefficient, the subsequent nonlinear stretching compensation can better match the actual situation, thereby reducing the deviation between the actual transmission length and the target stretching length and improving the accuracy of solder strip length control.

[0055] The tension control method provided in this application embodiment acquires multiple initialization parameters through the main control module 210 and sends control signals to the transmission module 220 according to each initialization parameter; the transmission module 220 determines the transmission speed according to the control signals and drives the welding strip to be transmitted along the conveying path at the transmission speed; the detection module 230 acquires the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and sends the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module 210. The main control module 210, based on a preset fusion algorithm, determines the theoretical transmission length according to the feeding distance, the stretching distance, and the cumulative deviation distance; it compensates the theoretical transmission length based on the actual stretching force value, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; it determines whether the actual transmission length is greater than or equal to the preset transmission length, and if so, it sends a trigger signal to the cutting mechanism 240 to trigger the cutting of the welding strip, thereby realizing high-precision detection and adjustment of the photovoltaic welding strip length, meeting the high-precision requirements of photovoltaic module mass production, and improving the welding performance and production efficiency of the welding strip.

[0056] Example 2 In addition, please see again Figure 2 , Figure 2 A schematic diagram of a stretching control device 200 provided in an embodiment of this application is shown. The stretching control device 200 includes: a main control module 210, a transmission module 220, a detection module 230, and a cutting mechanism 240. The main control module 210 is electrically connected to the transmission module 220, the detection module 230, and the cutting mechanism 240, respectively. The main control module 210 is used to acquire multiple initialization parameters and send control signals to the transmission module 220 according to each initialization parameter. The transmission module 220 is used to determine the transmission speed according to the control signal, and drive the welding strip to be transmitted along the conveying path at the transmission speed; The detection module 230 is used to acquire the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and to send the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module 210. The main control module 210 is used to determine the theoretical transmission length based on the feeding distance, the stretching distance and the cumulative deviation distance according to the preset fusion algorithm; to compensate the theoretical transmission length based on the actual stretching force value, the cross-sectional area and each of the initialization parameters to obtain the actual transmission length; to determine whether the actual transmission length is greater than or equal to the preset transmission length, and if so, to send a trigger signal to the cutting mechanism 240 to trigger the cutting of the welding strip.

[0057] The tension control device 200 provided in this application embodiment can execute the tension control method provided in the above-described method embodiment 1. To avoid repetition, it will not be described again here.

[0058] The tensile control device 200 provided in this application embodiment acquires multiple initialization parameters through the main control module 210 and sends control signals to the transmission module 220 according to each initialization parameter. The transmission module 220 determines the transmission speed according to the control signals and drives the welding strip to be transmitted along the conveying path at the transmission speed. The detection module 230 acquires the actual tensile force value, feeding distance, tensile distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and sends the actual tensile force value, feeding distance, tensile distance, cumulative deviation distance, and cross-sectional area to the main control module 210. The main control module 210, based on a preset fusion algorithm, determines the theoretical transmission length according to the feeding distance, the stretching distance, and the cumulative deviation distance; it compensates the theoretical transmission length based on the actual stretching force value, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; it determines whether the actual transmission length is greater than or equal to the preset transmission length, and if so, it sends a trigger signal to the cutting mechanism 240 to trigger the cutting of the welding strip, thereby realizing high-precision detection and adjustment of the photovoltaic welding strip length, meeting the high-precision requirements of photovoltaic module mass production, and improving the welding performance and production efficiency of the welding strip.

[0059] Example 3 Furthermore, this embodiment of the invention provides an electronic device 500, including a memory 503 and a processor 502. The memory 503 stores a computer program, and the computer program executes the stretching control method provided in Embodiment 1 when it runs on the processor 502.

[0060] For details, please see Figure 5 The electronic device 500 includes a transceiver 501, a bus interface, and a processor 502. The processor 502 is used by the main control module 210 to acquire multiple initialization parameters and send control signals to the transmission module 220 according to each initialization parameter. The transmission module 220 determines the transmission speed according to the control signals and drives the welding strip along the conveying path at the transmission speed. The detection module 230 acquires the actual tensile force value, feeding distance, tensile distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during transmission; and sends signals to the main control module 210. The system receives the actual tensile force value, the feeding distance, the stretching distance, the cumulative deviation distance, and the cross-sectional area. The main control module 210, based on a preset fusion algorithm, determines the theoretical transmission length according to the feeding distance, the stretching distance, and the cumulative deviation distance. It then compensates the theoretical transmission length based on the actual tensile force value, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length. Finally, it determines whether the actual transmission length is greater than or equal to the preset transmission length. If so, it sends a trigger signal to the cutting mechanism 240 to trigger the cutting of the welding strip.

[0061] In this embodiment of the invention, the electronic device 500 further includes a memory 503. Figure 5 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors 502 (represented by processor 502) and memory 503 (represented by memory 503). The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 501 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium. Processor 502 is responsible for managing the bus architecture and general processing, and memory 503 can store data used by processor 502 during operation.

[0062] The electronic device 500 provided in this embodiment of the invention can execute the stretching control method provided in the above-described method embodiment 1. To avoid repetition, it will not be described again here.

[0063] Example 4 Furthermore, embodiments of the present invention provide a computer-readable storage medium storing a computer program, which, when executed by a processor 502, implements the stretching control method provided in Embodiment 1.

[0064] In this embodiment, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0065] The computer-readable storage medium provided in this embodiment can implement the stretching control method provided in Embodiment 1. To avoid repetition, it will not be described again here.

[0066] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0067] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0068] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for controlling stretching, characterized in that, An application is made in a stretching control device, the device comprising: a main control module, a transmission module, a detection module, and a cutting mechanism, wherein the main control module is electrically connected to the transmission module, the detection module, and the cutting mechanism respectively; the method comprises: The main control module acquires multiple initialization parameters and sends control signals to the transmission module according to each initialization parameter; The transmission module determines the transmission speed according to the control signal, and drives the welding strip to be transmitted along the conveying path at the transmission speed; The detection module acquires the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during transmission; and sends the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module. The main control module determines the theoretical transmission length based on a preset fusion algorithm, according to the feeding distance, the stretching distance, and the cumulative deviation distance; it compensates the theoretical transmission length based on the actual stretching force, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; it determines whether the actual transmission length is greater than or equal to the preset transmission length, and if so, it sends a trigger signal to the cutting mechanism to trigger the cutting of the welding strip.

2. The stretching control method according to claim 1, characterized in that, Each of the initialization parameters includes: a standard tensile force value, the elastic modulus of the welding strip, and a nonlinear coefficient. The compensation for the theoretical transmission length based on the actual tensile force value, the cross-sectional area, and each of the initialization parameters includes: The tensile compensation coefficient is determined based on the actual tensile force value, the cross-sectional area, the standard tensile force value, and the elastic modulus. Based on the tension compensation coefficient, tension compensation is performed on the theoretical transmission length to obtain the initial corrected length; The theoretical transmission length is obtained by performing nonlinear tensile compensation on the initial correction length based on the actual tensile force value, the standard tensile force value shown, and the nonlinear coefficient.

3. The stretching control method according to claim 2, characterized in that, The tensile compensation coefficient is determined based on the actual tensile force, the cross-sectional area, the standard tensile force, and the elastic modulus, using the following formula: in, This represents the tensile compensation coefficient. This indicates the standard tensile force value. This indicates the actual tensile force value. This represents the elastic modulus. This represents the cross-sectional area; The tension compensation for the theoretical transmission length based on the tension compensation coefficient is calculated using the following formula: in, This indicates the initial correction length. This represents the theoretical transmission length.

4. The stretching control method according to claim 3, characterized in that, The nonlinear tensile compensation for the initial correction length based on the actual tensile force value, the standard tensile force value, and the nonlinear coefficient is calculated using the following formula: in, and These respectively represent the nonlinear coefficients. This indicates the actual transmission length.

5. The stretching control method according to claim 4, characterized in that, The initialization parameters further include: a preset tensile ratio, and the method further includes: The main control module determines the actual stretching rate based on the actual transmission length and the stretching distance; Determine whether the difference between the actual stretching ratio and the preset stretching ratio falls within the preset difference range. If not, adjust the standard stretching force value according to the difference between the actual stretching ratio and the preset stretching ratio.

6. The stretching control method according to claim 5, characterized in that, The actual stretching rate is determined based on the actual transmission length and the stretching distance, using the following formula: in, This indicates the stretching distance.

7. The stretching control method according to claim 4, characterized in that, The initialization parameters further include: a target stretching length, and the method further includes: The main control module adjusts the nonlinear coefficient based on the length deviation between the actual transmission length and the target stretching length.

8. A tension control device, characterized in that, The device includes: a main control module, a transmission module, a detection module, and a cutting mechanism, wherein the main control module is electrically connected to the transmission module, the detection module, and the cutting mechanism respectively; The main control module is used to acquire multiple initialization parameters and send control signals to the transmission module according to each initialization parameter; The transmission module is used to determine the transmission speed according to the control signal, and drive the welding strip to be transmitted along the conveying path at the transmission speed; The detection module is used to acquire the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area of ​​the welding strip during the transmission process; and to send the actual tensile force value, feeding distance, stretching distance, cumulative deviation distance, and cross-sectional area to the main control module. The main control module is used to determine the theoretical transmission length based on the feeding distance, the stretching distance, and the cumulative deviation distance according to a preset fusion algorithm; to compensate the theoretical transmission length based on the actual stretching force value, the cross-sectional area, and each of the initialization parameters to obtain the actual transmission length; and to determine whether the actual transmission length is greater than or equal to the preset transmission length. If so, a trigger signal is sent to the cutting mechanism to trigger the cutting of the welding strip.

9. An electronic device, characterized in that, It includes a memory and a processor, the memory storing a computer program that, when run on the processor, executes the stretching control method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the stretching control method according to any one of claims 1-7.

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