A method for characterizing the smoothness of a zipper and a method for determining the design parameters of a zipper

Abstract

The present application provides a method for characterizing the smoothness of a zipper and a method for determining the design parameters of a zipper. The characterization method includes: constructing an initial characterization expression for the smoothness of the zipper according to the mapping relationships between the guiding groove angle of the zipper and the tooth height and tooth pitch respectively, and the mapping relationships between the smoothness of the zipper and the guiding groove angle, tooth height and tooth pitch respectively; obtaining a simulation data set including the simulated smoothness of the zipper, and the simulated tooth pitch, simulated tooth height and simulated guiding groove angle corresponding to the simulated smoothness of the zipper; fitting to obtain a target coefficient set of the initial characterization expression based on the initial characterization expression and the simulation data set; replacing the initial coefficient set of the initial characterization expression with the target coefficient set to construct a target characterization expression for the smoothness of the zipper. By comprehensively considering the influence of factors such as tooth pitch, tooth height, and guiding groove angle on the smoothness of the zipper, more accurate design parameters can be provided for subsequent zipper design.

Description

Technical Field

[0001] The present application relates to the technical field of zipper parameter design, and in particular, to a method for characterizing the smoothness of a zipper and a method for determining zipper design parameters. Background Art

[0002] As a widely used connector, the performance of a zipper, such as the sliding, biting, and pulling durability between the tooth chain and the guiding groove, directly affects the user experience of the zipper. The smoothness of the zipper can directly or indirectly measure the various performances of the zipper.

[0003] The smoothness of the zipper is closely related to multiple factors, including tooth pitch, tooth height, the matching accuracy between the guiding groove and the tape, and the guiding groove, etc. Related technologies usually only consider the influence of a single factor on the smoothness of the zipper, lacking a comprehensive analysis of the complex mutual relationships between these factors. As a result, when designing a zipper, there are no accurate design parameters to accurately predict and optimize the smoothness of the zipper. Summary of the Invention

[0004] The present application provides a method for characterizing the smoothness of a zipper and a method for determining zipper design parameters, which can comprehensively consider the influence of factors such as tooth pitch, tooth height, and guiding groove angle on the smoothness of the zipper, and provide more accurate design parameters for subsequent zipper design.

[0005] In a first aspect of the present application, a method for characterizing the smoothness of a zipper is provided. The method includes: constructing an initial characterization expression for the smoothness of the zipper according to the mapping relationships between the guiding groove angle of the zipper and the tooth height and tooth pitch respectively, and the mapping relationships between the smoothness of the zipper and the guiding groove angle, tooth height, and tooth pitch respectively; obtaining a set of simulation data, the set of simulation data including the simulated smoothness of the zipper, and the simulated tooth pitch, simulated tooth height, and simulated guiding groove angle corresponding to the simulated smoothness of the zipper; fitting to obtain a set of target coefficients for the initial characterization expression based on the initial characterization expression and the set of simulation data; replacing the set of initial coefficients of the initial characterization expression with the set of target coefficients to construct a target characterization expression for the smoothness of the zipper, and the target characterization expression for the smoothness of the zipper is used to construct a determination model for zipper design parameters.

[0006] In some embodiments of the first aspect, the mapping relationships between the guiding groove angle of the zipper and the tooth height and tooth pitch respectively include a direct proportional relationship between the guiding groove angle of the zipper and the tooth height, and an inverse proportional relationship between the guiding groove angle of the zipper and the tooth pitch.

[0007] In some embodiments of the first aspect, the mapping relationships between the smoothness of the zipper and the guiding groove angle, tooth height, and tooth pitch respectively include an inverse proportional relationship between the smoothness of the zipper and the guiding groove angle, a negative proportional relationship between the smoothness of the zipper and the tooth height, and a direct proportional relationship between the smoothness of the zipper and the tooth pitch.

[0008] In some embodiments of the first aspect, the set of target coefficients includes a first coefficient for adjusting the mapping relationship between the tooth pitch and the smoothness of the zipper, a second coefficient for adjusting the mapping relationship between the tooth height and the smoothness of the zipper, a third coefficient for adjusting the mapping relationship between the guide groove angle and the smoothness of the zipper, a fourth coefficient for controlling the mapping relationship between the tooth pitch and the guide groove angle, and a fifth coefficient for controlling the mapping relationship between the tooth height and the guide groove angle; wherein, both the first coefficient and the second coefficient are coefficients with dimensions that convert a length unit to a force unit, the third coefficient is a constant coefficient, and both the fourth coefficient and the fifth coefficient are coefficients with dimensions that convert a length unit to an angle unit.

[0009] In some embodiments of the first aspect, obtaining a set of simulation data includes obtaining simulation parameters, where the simulation parameters include a simulation tooth pitch, a simulation tooth height, and a simulation guide groove angle; inputting the simulation parameters into a simulation model of the zipper pulling process established using the finite element method to output a simulated zipper smoothness; changing the magnitudes of the simulation parameters, and repeating the steps from obtaining the simulation parameters to outputting the simulated zipper smoothness until a stop condition is reached, at which point a set of simulation data is obtained.

[0010] In some embodiments of the first aspect, based on an initial characterization expression and a set of simulation data, a set of target coefficients for the initial characterization expression is obtained by fitting, including: defining an objective function based on the initial characterization expression, where the objective function is constructed with the goal of minimizing the sum of the squared residuals between the simulated zipper smoothness in the set of simulation data and the predicted zipper smoothness calculated from the initial characterization expression; inputting the set of simulation data into the objective function, and when the sum of the squared residuals between the simulated zipper smoothness in the objective function and the predicted zipper smoothness calculated from the initial characterization expression is within a preset range, a set of target coefficients for the initial characterization expression is obtained.

[0011] In some embodiments of the first aspect, the zipper design parameters include a guide groove angle. After constructing a target characterization expression for the zipper smoothness, the method further includes: according to the mapping relationships between the guide groove angle of the zipper and the tooth height and the tooth pitch respectively, decomposing a guide groove angle determination model of the zipper from the target characterization expression of the zipper smoothness, where the guide groove angle determination model of the zipper is used to input the tooth height, the tooth pitch, and the zipper smoothness and output the guide groove angle.

[0012] The second aspect of this application provides a method for determining zipper design parameters, the method including: obtaining a tooth height, a tooth pitch, and a zipper smoothness; inputting the tooth height, the tooth pitch, and the zipper smoothness into a guide groove angle determination model of the zipper to output a guide groove angle.

[0013] A third aspect of the present application provides an electronic device, including: a processor and a memory; the memory is coupled to the processor, and the memory is used to store computer program code, and the processor calls the computer program code to cause the electronic device to execute the method of the first aspect or the method of the second aspect.

[0014] A fourth aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method of the first aspect or the method of the second aspect is implemented.

[0015] It can be understood that the method for characterizing the smoothness of a zipper, the method for determining the design parameters of a zipper, the electronic device and the computer-readable storage medium provided by the present application comprehensively consider the influences of the tooth height, tooth pitch and guide groove angle on the smoothness of the zipper according to the mapping relationships between the guide groove angle of the zipper and the tooth height and tooth pitch respectively, and the mapping relationships between the smoothness of the zipper and the guide groove angle, tooth height and tooth pitch respectively, and construct the initial characterization expression of the smoothness of the zipper.

[0016] Then, based on the initial characterization expression and the simulated smoothness of the zipper in the simulated data set, as well as the simulated tooth pitch, simulated tooth height and simulated guide groove angle corresponding to the simulated smoothness of the zipper, a set of target coefficients of the initial characterization expression is obtained by fitting, and the influences between the smoothness of the zipper and the tooth height, tooth pitch and guide groove angle are further adjusted through the set of target coefficients. The method of obtaining the set of target coefficients by fitting based on the simulated data has wide applicability and can cover different types of zipper designs.

[0017] In this way, by replacing the initial coefficient set of the initial characterization expression with the set of target coefficients, the target characterization expression of the smoothness of the zipper constructed is more accurate in calculating the smoothness of the zipper than the expression of the smoothness of the zipper in the related art and has strong engineering applicability. At the same time. The determination model of the zipper design parameters constructed according to the target characterization expression of the smoothness of the zipper also considers the influences of multiple other factors on the design parameters, making the design parameters more accurate. The target characterization expression and the determination model of the zipper design parameters are simple and efficient, facilitating the rapid adjustment of the performance of the zipper during the design and production processes, and providing an accurate basis for the mass production and quality control of the zipper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0019] Figure 1 It is a schematic flowchart of a method for characterizing the smoothness of a zipper provided by an embodiment of the present application;

[0020] Figure 2It is a diagram of an application scenario of the method for characterizing the smoothness of a zipper provided by an embodiment of the present application;

[0021] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0022] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of Specific Embodiments

[0023] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0024] The terms "first", "second", etc. involved in the present application are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0025] The technical solution of the present application will be described in detail below with specific embodiments, and how the technical solution of the present application solves the technical problems will also be described in detail. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0026] Please refer to Figure 1 and Figure 2 , Figure 1 It is a schematic flowchart of a method for characterizing the smoothness of a zipper provided by the present application. The execution subject of this characterization method can be an electronic device, and the electronic device includes a desktop computer, a server, a smart phone, a laptop computer, etc. As Figure 1 shown, this characterization method may include the following steps:

[0027] Step S110: Construct an initial characterization expression of the zipper smoothness according to the mapping relationships between the guide groove angle of the zipper and the tooth height and tooth pitch respectively, and the mapping relationships between the zipper smoothness and the guide groove angle, tooth height, and tooth pitch respectively.

[0028] As Figure 2As shown, the zipper includes a tooth chain and a guide groove. When the guide groove pulls the teeth, multiple teeth bite or separate, causing the zipper to close or open. By measuring the pulling force required to pull the teeth, the smoothness S of the zipper is obtained after quantifying the pulling force. In one embodiment, the pulling force is inversely proportional to the smoothness S of the zipper. The guide groove angle θ refers to the angle between the two side wall surfaces of the notch of the guide groove that guides the teeth into the biting state. The tooth height H refers to the vertical distance from the top to the bottom of the tooth. The tooth pitch P refers to the distance between two adjacent teeth. Among them, the guide groove angle θ is obtained by an angle measuring tool, and the tooth height H and the tooth pitch P are obtained by a length measuring tool.

[0029] It can be understood that in the experimental test of pulling the teeth, multiple sets of experimental data can be obtained. Each set of experimental data includes the smoothness of the zipper, the guide groove angle, the tooth height, and the tooth pitch. By analyzing multiple sets of experimental data, the mapping relationships between the guide groove angle and the tooth height, the guide groove angle and the tooth pitch, the smoothness of the zipper and the guide groove angle, the smoothness of the zipper and the tooth height, and the smoothness of the zipper and the tooth pitch of the zipper can be obtained. Combining these mapping relationships, an initial characterization expression of the smoothness of the zipper characterized by the guide groove angle, the tooth height, and the tooth pitch can be constructed.

[0030] Exemplarily, the expressions of the mapping relationships between the guide groove angle of the zipper and the tooth height and the tooth pitch are as follows.

[0031] (1)

[0032] Where θ represents the guide groove angle, with the unit of degree (°), P represents the tooth pitch, with the unit of millimeter (mm), H represents the tooth height, with the unit of millimeter (mm), C 1 represents the first initial coefficient for adjusting the mapping relationship between the tooth pitch and the smoothness of the zipper, with the unit of degree (°) / millimeter (mm), C 2 represents the second initial coefficient for adjusting the mapping relationship between the tooth height and the smoothness of the zipper, with the unit of degree (°) / millimeter (mm). That is, the first initial coefficient C 1 and the second initial coefficient C 2 are both coefficients with physical dimensions that convert the length unit to the force unit.

[0033] It can be understood that during the process of the teeth biting, the larger the tooth pitch P, the looser the teeth bite, and a smaller guide groove angle θ is required to avoid excessive friction. Therefore, the guide groove angle θ is inversely proportional to the tooth pitch P (expression (1) uses log(P) to represent this inverse proportional relationship). At the same time, the higher the tooth height H, the greater the biting force between the teeth. To avoid excessive resistance equivalent to the biting force, a larger guide groove angle θ is required to better guide the teeth into the guide groove. Therefore, the guide groove angle θ is directly proportional to the tooth height H.

[0034] Exemplarily, the expressions of the mapping relationships between the smoothness of the zipper and the guide groove angle, tooth height, and tooth pitch are shown as follows.

[0035] (2)

[0036] Among them, S represents the smoothness of the zipper, C 3 represents the third initial coefficient for adjusting the mapping relationship between the guide groove angle and the smoothness of the zipper. C3 is a constant coefficient, C 4 represents the fourth initial coefficient for controlling the mapping relationship between the tooth pitch and the guide groove angle, with the unit of Newton (N) per millimeter (mm). C 5 is the fifth initial coefficient for controlling the mapping relationship between the tooth height and the guide groove angle, with the unit of Newton (N) per millimeter (mm). That is, the fourth initial coefficient C 4 and the fifth initial coefficient C 5 are both coefficients with dimensions that convert length units to angle units.

[0037] It can be understood that the larger the tooth pitch P, the looser the engagement of the chain teeth, and the higher the smoothness S of the zipper. Therefore, the smoothness S of the zipper is in a direct proportional relationship with the tooth pitch P. At the same time, the higher the tooth height H, the greater the biting force between the chain teeth, the greater the resistance, and the lower the smoothness S of the zipper. It can be considered that the smoothness S of the zipper is in an inverse proportional relationship with the tooth pitch P. Finally, the guide groove angle θ affects the angle at which the chain teeth enter the guide groove. The larger the guide groove angle θ, the less precise the engagement angle between the chain teeth, resulting in an increase in resistance and a decrease in the smoothness S of the zipper. Therefore, the guide groove angle θ is in an inverse proportional relationship with the smoothness S of the zipper. Among them, the tangent function (tan) can effectively describe the non-linear characteristic that a small change in the guide groove angle θ causes a large change in the smoothness S of the zipper.

[0038] Exemplarily, substituting the expression (1) into the expression (2), an initial characterization expression can be obtained, and the initial characterization expression is shown as follows.

[0039] (3)

[0040] It can be understood that the initial values of the first initial coefficient C 1 to the fifth initial coefficient C 2 can be preset.

[0041] Step S120: Obtain a set of simulation data.

[0042] The simulation data set includes the simulation smoothness of the zipper, as well as the corresponding simulation tooth pitch, simulation tooth height, and simulation guide groove angle of the simulation smoothness of the zipper. Specifically, the pulling process of the simulation zipper can be constructed using simulation software, and the simulation parameters (simulation parameters refer to the parameters used during simulation, including simulation tooth pitch, simulation tooth height, and simulation guide groove angle) are input into the simulation software to output the simulation smoothness of the zipper. It can be understood that by changing the sizes of the simulation tooth pitch, simulation tooth height, and simulation guide groove angle, the corresponding simulation smoothness of the zipper after the change can be obtained, thereby obtaining multiple sets of simulation data. Multiple sets of simulation data constitute the simulation data set. Each set of simulation data includes the simulation smoothness of the zipper, as well as the corresponding simulation tooth pitch, simulation tooth height, and simulation guide groove angle of the simulation smoothness of the zipper. That is, each set of simulation data includes simulation parameters and the corresponding simulation smoothness of the zipper for the simulation parameters.

[0043] Step S130: Based on the initial characterization expression and the simulation data set, the target coefficient set of the initial characterization expression is obtained by fitting.

[0044] In one implementation, the least squares method can be used to construct the objective function of the initial characterization expression. Then, the numerical optimization algorithm and the simulation data set are used to solve the objective function to obtain the target coefficient set. Specifically, it includes the following steps:

[0045] Step S131: Define the objective function based on the initial characterization expression.

[0046] The objective function is constructed with the goal of minimizing the sum of the squared residuals between the simulation smoothness of the zipper in the simulation data set and the predicted zipper smoothness calculated from the initial characterization expression. The way to obtain the predicted zipper smoothness includes substituting the simulation tooth pitch and simulation tooth height in the simulation data set into the initial characterization expression to output the predicted zipper smoothness. That is, each set of simulation data has a corresponding predicted zipper smoothness.

[0047] Step S132: Input the simulation data set into the objective function.

[0048] Step S133: Based on the numerical optimization algorithm, when the sum of the squared residuals between the simulation smoothness of the zipper and the predicted zipper smoothness is within a preset range, the target coefficient set of the initial characterization expression is obtained.

[0049] The numerical optimization algorithms include the gradient descent method and maximum likelihood estimation, etc. It can be understood that each time a set of simulation data and the corresponding predicted zipper smoothness are input into the objective function, the sum of the squared residuals between the corresponding simulation smoothness of the zipper and the predicted zipper smoothness can be calculated. In this way, a sum of squared residuals can be obtained for each iteration. After multiple iterations, when the sum of squared residuals is within the preset range, the iteration stops. At this time, the set of initial coefficients corresponding to the sum of squared residuals is the target coefficient set.

[0050] It is understandable that the target coefficient set and the initial coefficient set correspond one by one. That is to say, the target coefficient set includes a first coefficient K for adjusting the mapping relationship between the tooth pitch and the smoothness of the zipper. 1 a second coefficient K for adjusting the mapping relationship between the tooth height and the smoothness of the zipper 2 a third coefficient K for adjusting the mapping relationship between the guide groove angle and the smoothness of the zipper 3 a fourth coefficient K for controlling the mapping relationship between the tooth pitch and the guide groove angle 4 and a fifth coefficient K for controlling the mapping relationship between the tooth height and the guide groove angle 5 . Among them, the first coefficient K 1 and the second coefficient K 2 are both coefficients with dimension that convert the length unit to the force unit, the third coefficient K 3 is a constant coefficient, and the fourth coefficient K 4 and the fifth coefficient K 5 are both coefficients with dimension that convert the length unit to the angle unit.

[0051] Step S140: Replace the initial coefficient set of the initial characterization expression with the target coefficient set to construct a target characterization expression for the smoothness of the zipper.

[0052] Exemplarily, the target characterization expression is as follows:

[0053]

[0054] It is understandable that the role of the target coefficient set in the target characterization expression is the same as that of the initial coefficient set in the initial characterization expression, which will not be elaborated here.

[0055] The target characterization expression of the smoothness of the zipper is used to construct a determination model for the zipper design parameters. It is understandable that according to the target characterization expression, determination models for different zipper design parameters can be calculated, for example, a tooth height determination model, a tooth pitch determination model, and a guide groove angle determination model, so that in the design stage, given the smoothness of the zipper and other parameters, the design parameters determined by the model can be obtained through the determination model of the zipper design parameters. The design parameters obtained through the determination model take into account the influence of multiple other factors on the design parameters, making the design parameters more accurate.

[0056] Exemplarily, after constructing the target characterization expression of the smoothness of the zipper, the characterization method further includes: according to the mapping relationships between the guide groove angle and the tooth height and the tooth pitch respectively, decomposing a determination model for the guide groove angle of the zipper from the target characterization expression of the smoothness of the zipper. The expression of the determination model for the guide groove angle is That is, the guiding groove angle determination model of the zipper is used to input the tooth height, tooth pitch, and zipper smoothness, and output the guiding groove angle.

[0057] It can be understood that this method of characterizing the non-linear relationship breaks through the simplistic treatment of the guiding groove angle in traditional designs and proposes a more accurate and dynamically adjustable design scheme. It provides new ideas for the detailed optimization in zipper design and can effectively improve the overall performance of the zipper.

[0058] In the above technical solution, according to the mapping relationships between the guiding groove angle of the zipper and the tooth height and tooth pitch respectively, and the mapping relationships between the zipper smoothness and the guiding groove angle, tooth height, and tooth pitch respectively, the initial characterization expression of the zipper smoothness is constructed, comprehensively considering the influences of the tooth height, tooth pitch, and guiding groove angle on the zipper smoothness.

[0059] Then, based on the initial characterization expression and the simulated zipper smoothness in the simulation data set, as well as the simulated tooth pitch, simulated tooth height, and simulated guiding groove angle corresponding to the simulated zipper smoothness, a set of target coefficients of the initial characterization expression is obtained by fitting. Through the set of target coefficients, the influences between the zipper smoothness and the tooth height, tooth pitch, and guiding groove angle are further adjusted. The method of obtaining the set of target coefficients by fitting based on the simulation data has wide applicability and can cover different types of zipper designs.

[0060] In this way, by replacing the initial coefficient set of the initial characterization expression with the set of target coefficients, the target characterization expression of the zipper smoothness is constructed. Compared with the expression of the zipper smoothness in the related technology, the calculated zipper smoothness is more accurate and has strong engineering applicability. At the same time, the determination model of the zipper design parameters constructed according to the target characterization expression of the zipper smoothness also considers the influences of multiple other factors on the design parameters, making the design parameters more accurate. The target characterization expression and the determination model of the zipper design parameters are simple and efficient, facilitating the rapid adjustment of the zipper performance during the design and production processes, and providing a precise basis for the mass production and quality control of the zipper.

[0061] In some embodiments, step S120 of obtaining the simulation data set includes the following steps:

[0062] Step S121: Obtain simulation parameters.

[0063] The simulation parameters include the simulated tooth pitch, simulated tooth height, and simulated guiding groove angle.

[0064] Step S122: Input the simulation parameters into the simulation model of the zipper pulling process established using the finite element method, and output the simulated zipper smoothness.

[0065] In simulation software such as ABAQUS, ANSYS, or HyperMesh, a simulation model of the zipper pulling process is established by the finite element method. Specifically, it includes geometric modeling, that is, according to the dimensions of a specified model of the zipper, a geometric model of the zipper is established. Exemplarily, the initial simulation pitch is 2.5 mm, the initial simulation tooth height is H = 1.8 mm, and the initial simulation guide groove angle is 73°. Mesh generation, that is, refined mesh generation is performed on the key areas of the zipper (such as the teeth, guide grooves, and component contact areas) to ensure that the mesh accuracy is high enough to accurately simulate the mechanical behavior during the zipping process. Definition of physical properties, that is, the physical and mechanical properties of the zipper material are defined, such as elastic modulus, Poisson's ratio, friction coefficient, etc. Loading conditions, that is, the loading conditions and boundary conditions of the zipper are set, such as the moving speed of the guide groove, the external force during the zipping process, and the friction between the contact surfaces of each component.

[0066] Step S123: Change the magnitude of the simulation parameters, and repeat the steps from obtaining the simulation parameters to outputting the smoothness of the simulated zipper until the stop condition is reached, and then obtain the simulation data set.

[0067] It can be understood that this step is the simulation analysis process, analyzing the influence of different simulation parameters (simulation pitch, simulation tooth height, simulation guide groove angle) on the smoothness of the simulated zipper. In the simulation, the guide groove moves along the direction of the chain belt composed of the teeth, simulating the biting process of the teeth of the chain belt, and recording the smoothness of the simulated zipper (that is, the pulling force required during the movement of the guide groove).

[0068] By changing the magnitude of the simulation parameters, sufficient simulation data can be obtained for fitting the target coefficient set. Exemplarily, the range of change in the magnitude of the simulation parameters can be that the simulation pitch P ranges from 2 mm to 3 mm, the simulation tooth height H ranges from 1.5 mm to 2 mm, and the simulation guide groove angle θ ranges from 60° to 80°.

[0069] Finally, when the stop condition (the stop condition can be that the number of changes in the magnitude of the simulation parameters is greater than the threshold) is reached, that is, after the simulation is completed, the smoothness S of the simulated zipper, the simulation pitch P corresponding to the smoothness S of the simulated zipper, the simulation tooth height H, and the simulation guide groove angle θ are extracted from each simulation result, thereby obtaining the simulation data set.

[0070] Exemplarily, the simulation data set is shown in the following table:

[0071]

[0072] The target coefficient set obtained by fitting based on the above table of simulation data set is:

[0073] The present application also provides a method for determining zipper design parameters. The execution subject of this determination method can be an electronic device, which includes a desktop computer, a server, a smart phone, a laptop computer, etc. The method includes:

[0074] Step S210: Obtain the tooth height, tooth pitch, and zipper smoothness.

[0075] Step S220: Input the tooth height, tooth pitch, and zipper smoothness into the guiding groove angle determination model of the zipper, and output the guiding groove angle. Among them, the guiding groove angle determination model is the guiding groove angle determination model provided by the above technical solution.

[0076] Figure 3 It is a schematic structural diagram of the electronic device provided by the present application. As Figure 3 shown, the electronic device 10 includes:

[0077] A processor 11, a memory 12, and a bus 13;

[0078] The memory 12 is used to store the computer program code of the processor 11;

[0079] Among them, the processor 11 is configured to execute the technical solution of the method for characterizing the zipper smoothness or the technical solution of the method for determining the zipper design parameters in any of the foregoing method embodiments by executing the computer program code.

[0080] Optionally, the memory 12 can be either independent or integrated with the processor 11.

[0081] The memory 12 is connected to the processor 11 through the bus 13 and completes the communication therebetween.

[0082] Optionally, the memory 12 may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory.

[0083] The bus 13 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0084] The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0085] The electronic device 10 is used to execute the technical solutions provided in any of the foregoing method embodiments. The implementation principles and technical effects are similar and will not be elaborated here.

[0086] This application also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the technical solutions of the method for characterizing the smoothness of a zipper or the method for determining the design parameters of a zipper as described above are implemented.

[0087] Those of ordinary skill in the art can understand that all or part of the steps of implementing the foregoing method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of including the foregoing method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for characterizing the smoothness of a zipper, characterized in that: The method comprises: According to the mapping relationship between the guide groove angle of the zipper and the tooth height and tooth pitch, and the mapping relationship between the zipper's smoothness and the guide groove angle, tooth height and tooth pitch, an initial characterization expression of the zipper's smoothness is constructed; Acquire a simulation data set, wherein the simulation data set includes a simulated zipper smoothness, and a simulated tooth pitch, a simulated tooth height, and a simulated guide groove angle corresponding to the simulated zipper smoothness; Based on the initial characterization expression and the simulation data set, fitting to obtain a target coefficient set of the initial characterization expression; Replacing the initial coefficient set of the initial characterization expression with the target coefficient set to construct a target characterization expression of zipper smoothness, wherein the target characterization expression of zipper smoothness is used to construct a determination model of zipper design parameters; Among them, the mapping relationships between the guide groove angle of the zipper and the tooth height and the tooth pitch include a positive proportional relationship between the guide groove angle of the zipper and the tooth height, and an inverse proportional relationship between the guide groove angle of the zipper and the tooth pitch; the mapping relationships between the zipper smoothness and the guide groove angle, the tooth height and the tooth pitch include an inverse proportional relationship between the zipper smoothness and the guide groove angle, a negative proportional relationship between the zipper smoothness and the tooth height, and a positive proportional relationship between the zipper smoothness and the tooth pitch.

2. The method according to claim 1, characterized in that The target coefficient set includes a first coefficient for adjusting the mapping relationship between tooth pitch and zipper smoothness, a second coefficient for adjusting the mapping relationship between tooth height and zipper smoothness, a third coefficient for adjusting the mapping relationship between guide groove angle and zipper smoothness, a fourth coefficient for controlling the mapping relationship between tooth pitch and guide groove angle, and a fifth coefficient for controlling the mapping relationship between tooth height and guide groove angle; wherein the first coefficient and the second coefficient are both coefficients of dimensioned quantities that convert length units into force units, the third coefficient is a constant coefficient, and the fourth coefficient and the fifth coefficient are both coefficients of dimensioned quantities that convert length units into angle units.

3. The method according to claim 1, characterized in that The obtaining of the simulation data set comprises: Acquiring simulation parameters, wherein the simulation parameters include a simulated tooth pitch, a simulated tooth height, and a simulated guide groove angle; Inputting the simulation parameters into a simulation model of a zipper pulling process established using a finite element method, and outputting a simulated zipper sliding degree; The size of the simulation parameter is changed, and the steps of obtaining the simulation parameter to outputting the simulated zipper smoothness are repeatedly performed until a stop condition is reached, and the simulation data set is obtained.

4. The method according to claim 1, characterized in that: The step of fitting a target coefficient set of the initial characterization expression based on the initial characterization expression and the simulation data set includes: Based on the initial characterization expression, an objective function is defined, wherein the objective function is constructed with the goal of minimizing the sum of squares of residuals between the simulated zipper smoothness in the simulation data set and the predicted zipper smoothness calculated by the initial characterization expression; The simulation data set is input into the objective function, and when the residual sum of squares between the simulated zipper smoothness of the objective function and the predicted zipper smoothness calculated by the initial characterization expression is within a preset range, a target coefficient set of the initial characterization expression is obtained.

5. The method according to claim 1, characterized in that The zipper design parameters include the guide groove angle. After constructing and obtaining the target representation expression of the zipper's light sliding degree, the method further includes: According to the mapping relationship between the guide groove angle of the zipper and the tooth height and tooth pitch, a zipper guide groove angle determination model is decomposed from the target characterization expression of the zipper smoothness. The zipper guide groove angle determination model is used to input the tooth height, tooth pitch and zipper smoothness, and output the guide groove angle.

6. A method for determining zipper design parameters, characterized in that the method include: Get the tooth height, tooth pitch and zipper slip; The tooth height, tooth pitch and zipper slippage are input into the guide groove angle determination model of the zipper according to claim 5, and the guide groove angle is output.

7. An electronic device, characterized in that: include: Processor and memory; The memory is coupled to the processor, and the memory is used to store computer program code. The processor calls the computer program code to enable the electronic device to execute the method according to any one of claims 1 to 5 or the method according to claim 6.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 5 or the method according to claim 6 is implemented.

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