Zipper lightness and smoothness characterization method and zipper design parameter determination method

Abstract

The invention provides a method for characterizing the smoothness of a zipper and a method for determining design parameters of the zipper, and the method comprises the steps: constructing an initial characterization expression of the smoothness of the zipper according to the mapping relation between the angle of a guide groove of the zipper and the tooth height and the tooth pitch, and the mapping relation between the smoothness of the zipper and the angle of the guide groove, the tooth height and the tooth pitch; acquiring a simulation data set comprising the light smoothness of the simulation zipper, and a simulation tooth pitch, a simulation tooth height and a simulation guide groove angle corresponding to the light smoothness of the simulation zipper; based on the initial representation expression and the simulation data set, fitting to obtain a target coefficient set of the initial representation expression; and replacing the initial coefficient set of the initial representation expression with a target coefficient set, and constructing to obtain a target representation expression of the zipper lightness and smoothness. The influence of factors such as the tooth pitch, the tooth height and the angle of the guide groove on the smoothness of the zipper is comprehensively considered, and more accurate design parameters are provided for subsequent zipper design.

Description

Technical Field

[0001] The present application relates to the technical field of zipper parameter design disclosed herein, 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 sliding, biting and pulling durability between the teeth chain and the guide groove of the zipper directly affect the user experience of the zipper. The zipper's various performances can be directly or indirectly measured by its smoothness.

[0003] The smoothness of a zipper is closely related to multiple factors, including tooth pitch, tooth height, matching accuracy between the guide groove and the chain belt, and the guide groove, etc. Related technologies usually only consider the impact of a single factor on the smoothness of a zipper, and lack a comprehensive analysis of the complex relationship between these factors, resulting in a lack of precise design parameters to accurately predict and optimize the smoothness of a zipper when designing a zipper. Summary of the invention

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

[0005] A first aspect of the present application provides a method for characterizing the smoothness of a zipper, the method comprising: constructing an initial characterization expression for the smoothness of the zipper according to the mapping relationships between the guide groove angle of the zipper and the tooth height and the tooth pitch, and the mapping relationships between the smoothness of the zipper and the guide groove angle, the tooth height and the tooth pitch, respectively; acquiring a simulation data set, the simulation data set comprising the simulated smoothness of the zipper, and the simulated tooth pitch, the simulated tooth height and the simulated guide groove angle corresponding to the simulated smoothness of the zipper; fitting 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, the target characterization expression for the smoothness of the zipper being used to construct a determination model for zipper design parameters.

[0006] In some embodiments of the first aspect, the mapping relationships between the guide groove angle of the zipper and the tooth height and the tooth pitch include a direct 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.

[0007] In some embodiments of the first aspect, the mapping relationships between the zipper smoothness and the guide groove angle, tooth height and 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 direct proportional relationship between the zipper smoothness and the tooth pitch.

[0008] In some embodiments of the first aspect, 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.

[0009] In some embodiments of the first aspect, obtaining a simulation data set includes obtaining simulation parameters, the simulation parameters including 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 smoothness; changing the size of the simulation parameters, and repeatedly executing the steps of obtaining the simulation parameters to outputting the simulated zipper smoothness until a stop condition is reached, thereby obtaining the simulation data set.

[0010] In some embodiments of the first aspect, based on the initial characterization expression and the simulation data set, a target coefficient set of the initial characterization expression is fitted, including: defining an objective function based on the initial characterization expression, the objective function being constructed with the goal of minimizing the sum of squared residuals between the simulated zipper smoothness in the simulation data set and the predicted zipper smoothness calculated by the initial characterization expression; inputting the simulation data set into the objective function, and obtaining the target coefficient set of the initial characterization expression when the sum of squared residuals 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.

[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's smoothness, the method further includes: decomposing a zipper's guide groove angle determination model from the target characterization expression for the zipper's smoothness according to a mapping relationship between the zipper's guide groove angle and the tooth height and tooth pitch, respectively. The zipper's guide groove angle determination model is used to input the tooth height, tooth pitch and zipper's smoothness, and output the guide groove angle.

[0012] A second aspect of the present application provides a method for determining zipper design parameters, the method comprising: obtaining tooth height, tooth pitch and zipper smoothness; inputting the tooth height, tooth pitch and zipper smoothness into a zipper guide groove angle determination model, and outputting the guide groove angle.

[0013] The third aspect of the present application provides an electronic device, comprising: a processor and a memory; the memory is coupled to the processor, the memory is used to store computer program code, and the processor calls the computer program code to enable 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. 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 the zipper, the method for determining the design parameters of the zipper, the electronic device and the computer-readable storage medium provided in the present application, based on the mapping relationship between the guide groove angle of the zipper and the tooth height and the tooth pitch, as well as the mapping relationship between the smoothness of the zipper and the guide groove angle, the tooth height and the tooth pitch, constructs an initial characterization expression for the smoothness of the zipper that comprehensively considers the effects of the tooth height, tooth pitch and guide groove angle on the smoothness of the zipper.

[0016] Next, the target coefficient set of the initial characterization expression is obtained 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 guide groove angle corresponding to the simulated zipper smoothness, and the influence of the zipper smoothness on the tooth height, tooth pitch and guide groove angle is further adjusted through the target coefficient set. The method of obtaining the target coefficient set based on the fitting of simulation data has wide applicability and can cover different types of zipper designs.

[0017] In this way, the initial coefficient set of the initial characterization expression is replaced with the target coefficient set, and the target characterization expression of the zipper smoothness is constructed. Compared with the expression of the zipper smoothness of the related technology, the calculated zipper smoothness is more accurate and has stronger engineering applicability. At the same time. The zipper design parameter determination model constructed according to the target characterization expression of the zipper smoothness also considers the influence of multiple other factors on the design parameters, making the design parameters more accurate. The target characterization expression and the zipper design parameter determination model are simple and efficient, which is convenient for quickly adjusting the performance of the zipper during the design and production process, and provides an accurate basis for the mass production and quality control of zippers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 A schematic diagram of a process of a method for characterizing the smoothness of a zipper provided in an embodiment of the present application; Figure 2A diagram of an application scenario of the method for characterizing the smoothness of a zipper provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0020] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope 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

[0021] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0022] The terms "first", "second", etc. involved in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0023] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the technical problem. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0024] See also Figure 1 and Figure 2 , Figure 1 The present invention provides a flow chart of a method for characterizing the smoothness of a zipper. The method may be performed by an electronic device, such as a desktop computer, a server, a smart phone, or a laptop computer. Figure 1 As shown, the characterization method may include the following steps: Step S110: construct an initial characterization expression of the zipper smoothness 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 smoothness and the guide groove angle, tooth height and tooth pitch.

[0025] like Figure 2As shown, the zipper includes a toothed chain and a guide groove. When the guide groove pulls the chain teeth, multiple chain teeth engage or separate to close or separate the zipper. The pulling force required to pull the chain teeth is measured and the pulling force is quantified to obtain the zipper smoothness S. In one embodiment, the pulling force is inversely proportional to the zipper smoothness S. The guide groove angle θ refers to the angle between the walls on both sides of the groove of the guide groove that guides the chain teeth into the engaged state. The tooth height H refers to the vertical distance from the top to the bottom of the chain tooth. The tooth pitch P refers to the distance between two adjacent chain teeth. Among them, the guide groove angle θ is obtained by an angle measuring tool, and the tooth height H and tooth pitch P are obtained by a length measuring tool.

[0026] It can be understood that through the experimental test of pulling the chain teeth, multiple sets of experimental data can be obtained, each set of experimental data includes zipper smoothness, guide groove angle, tooth height and tooth pitch. By analyzing multiple sets of experimental data, the mapping relationship between the guide groove angle and tooth height, the mapping relationship between the guide groove angle and tooth pitch, the mapping relationship between the zipper smoothness and the guide groove angle, the mapping relationship between the zipper smoothness and tooth height, and the mapping relationship between the zipper smoothness and tooth pitch can be obtained. Combining these mapping relationships, an initial characterization expression of the zipper smoothness characterized by the guide groove angle, tooth height and tooth pitch can be constructed.

[0027] Exemplarily, the expressions for the mapping relationship between the guide groove angle of the zipper and the tooth height and tooth pitch are shown below.

[0028] (1) Where θ is the guide groove angle in degrees (°), P is the tooth pitch in millimeters (mm), H is the tooth height in millimeters (mm), and C 1 It represents the first initial coefficient used to adjust the mapping relationship between the tooth pitch and the zipper's smoothness, in degrees (°) / millimeters (mm), C 2 The second initial coefficient C represents the mapping relationship between the tooth height and the zipper's smoothness, and the unit is degree (°) / millimeter (mm). That is, the first initial coefficient C 1 and the second initial coefficient C 2 Both are coefficients of dimensioned quantities that convert length units into force units.

[0029] It can be understood that during the engagement of the chain teeth, the larger the pitch P, the looser the chain teeth engage, and a smaller guide groove angle θ is required to avoid excessive friction. Therefore, the guide groove angle θ is inversely proportional to the 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 engagement force between the chain teeth. In order to avoid excessive resistance equivalent to the bite force, a larger guide groove angle θ is required to better guide the chain teeth into the guide groove. Therefore, the guide groove angle θ is directly proportional to the tooth height H.

[0030] Exemplarily, the expressions for the mapping relationship between the zipper's smoothness and the guide groove angle, tooth height, and tooth pitch are shown below.

[0031] (2) Among them, S represents the zipper's smoothness, C 3 represents the third initial coefficient for adjusting the mapping relationship between the guide groove angle and the zipper sliding degree, C3 is a constant coefficient, C 4 The fourth initial coefficient for controlling the mapping relationship between the tooth pitch and the guide groove angle, in Newton (N) / millimeter (mm), C 5 The fifth initial coefficient for controlling the mapping relationship between tooth height and guide groove angle is in Newton (N) / millimeter (mm). That is, the fourth initial coefficient C 4 and the fifth initial coefficient C 5 Both are dimensionless coefficients for converting length units into angular units.

[0032] It can be understood that the larger the tooth pitch P, the looser the chain teeth bite, and the zipper's smoothness S increases. Therefore, the zipper's smoothness S is in direct proportion to the tooth pitch P. At the same time, the higher the tooth height H, the greater the bite force between the chain teeth, the greater the resistance, and the zipper's smoothness S decreases. It can be considered that the zipper's smoothness S is in negative proportion to 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 bite angle between the chain teeth, resulting in increased resistance and reduced zipper's smoothness S. Therefore, the guide groove angle θ is inversely proportional to the zipper's smoothness S. Among them, the tangent function (tan) can effectively describe the nonlinear characteristics of the zipper's smoothness S caused by a small change in the guide groove angle θ.

[0033] Exemplarily, by substituting expression (1) into expression (2), an initial characterization expression can be obtained, and the initial characterization expression is as follows.

[0034] (3) It can be understood that the first initial coefficient C 1 To the fifth initial coefficient C 2 The initial value of can be preset.

[0035] Step S120: Acquire a simulation data set.

[0036] The simulation data set includes the simulated zipper smoothness, and the simulated tooth pitch, simulated tooth height and simulated guide groove angle corresponding to the simulated zipper smoothness. Specifically, the simulation software can be used to construct the pulling process of the simulated zipper, input the simulation parameters (simulation parameters refer to the parameters used in the simulation, and the simulation parameters include the simulated tooth pitch, simulated tooth height and simulated guide groove angle) to the simulation software, and output the simulated zipper smoothness. It can be understood that by changing the size of the simulated tooth pitch, simulated tooth height and simulated guide groove angle, the corresponding simulated zipper smoothness after the size change can be obtained, thereby obtaining multiple groups of simulation data, and multiple groups of simulation data constitute the simulation data set. Each group of simulation data includes the simulated zipper smoothness, and the simulated tooth pitch, simulated tooth height and simulated guide groove angle corresponding to the simulated zipper smoothness. That is, each group of simulation data includes the simulation parameters and the simulated zipper smoothness corresponding to the simulation parameters.

[0037] Step S130: Based on the initial characterization expression and the simulation data set, a target coefficient set of the initial characterization expression is obtained by fitting.

[0038] In one implementation, the least square method can be used to construct the objective function of the initial characterization expression, and then the numerical optimization algorithm and the simulation data set are used to solve the objective function to obtain the target coefficient set. Specifically, the following steps are included: Step S131: defining an objective function based on an initial characterization expression.

[0039] The objective function is constructed with the goal of minimizing the residual sum of squares between the simulated zipper smoothness in the simulation data set and the predicted zipper smoothness calculated by the initial characterization expression. The predicted zipper smoothness is obtained by substituting the simulated tooth pitch and simulated tooth height in the simulation data set into the initial characterization expression and outputting the predicted zipper smoothness. That is, each set of simulation data has a corresponding predicted zipper smoothness.

[0040] Step S132: Input the simulation data set into the objective function. Step S133: Based on the numerical optimization algorithm, when the residual sum of squares between the simulated zipper smoothness and the predicted zipper smoothness is within a preset range, a target coefficient set of the initial characterization expression is obtained.

[0041] Numerical optimization algorithms include gradient descent method and maximum likelihood estimation. 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 residual sum of squares between the corresponding simulated zipper smoothness and the predicted zipper smoothness can be calculated. In this way, a residual sum of squares can be obtained for each iteration. After multiple iterations, when the residual sum of squares is within a preset range, the iteration is stopped. At this time, the initial coefficient set corresponding to the residual sum of squares is the target coefficient set.

[0042] It can be understood that the target coefficient set and the initial coefficient set correspond one to one. That is, the target coefficient set includes a first coefficient K for adjusting the mapping relationship between the tooth pitch and the zipper smoothness. 1 , the second coefficient K used to adjust the mapping relationship between tooth height and zipper smoothness 2 , the third coefficient K for adjusting the mapping relationship between the guide groove angle and the zipper sliding degree 3 , the fourth coefficient K used to control the mapping relationship between the tooth pitch and the guide groove angle 4 and the fifth coefficient K for controlling the mapping relationship between tooth height and guide groove angle 5 Among them, the first coefficient K 1 and the second coefficient K 2 are the coefficients of the dimensionless quantity that converts the length unit into the force unit. The third coefficient K 3 is a constant coefficient, the fourth coefficient K 4 and the fifth coefficient K 5 Both are dimensionless coefficients for converting length units into angular units.

[0043] Step S140: replacing the initial coefficient set of the initial characterization expression with the target coefficient set, and constructing a target characterization expression for the zipper's smoothness.

[0044] For example, the target representation expression is as follows:

[0045] It can be understood that the role of the target coefficient set in the target representation expression is consistent with the role of the initial coefficient set in the initial representation expression, and will not be repeated here.

[0046] The target characterization expression of the zipper's lightness is used to construct a determination model for zipper design parameters. It can be understood that different determination models for zipper design parameters can be converted according to the target characterization expression, such as the tooth height determination model, the tooth pitch determination model, and the guide groove angle determination model, so that in the design stage, when the zipper's lightness and other parameters are known, the design parameters determined by the model can be obtained through the zipper design parameter determination model. The design parameters obtained by the determination model take into account the influence of multiple other factors on the design parameters, making the design parameters more accurate.

[0047] Exemplarily, after constructing the target representation expression of the zipper's smoothness, the representation method further includes: decomposing the guide groove angle determination model of the zipper from the target representation expression of the zipper's smoothness according to the mapping relationship between the guide groove angle and the tooth height and the tooth pitch. The expression of the guide groove angle determination model is: That is, the guide groove angle determination model of the zipper is used to input the tooth height, tooth pitch and zipper slippage, and output the guide groove angle.

[0048] It can be understood that this nonlinear relationship representation method breaks through the simplistic treatment of the guide groove angle in traditional design and proposes a more accurate and dynamically adjustable design solution. It provides new ideas for detail optimization in zipper design and can effectively improve the overall performance of the zipper.

[0049] In the above technical scheme, based on the mapping relationship between the guide groove angle of the zipper and the tooth height and tooth pitch, as well as the mapping relationship between the zipper smoothness and the guide groove angle, tooth height and tooth pitch, the initial characterization expression of the zipper smoothness is constructed, which comprehensively considers the influence of tooth height, tooth pitch and guide groove angle on the zipper smoothness.

[0050] Next, the target coefficient set of the initial characterization expression is obtained 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 guide groove angle corresponding to the simulated zipper smoothness, and the influence of the zipper smoothness on the tooth height, tooth pitch and guide groove angle is further adjusted through the target coefficient set. The method of obtaining the target coefficient set based on the fitting of simulation data has wide applicability and can cover different types of zipper designs.

[0051] In this way, the initial coefficient set of the initial characterization expression is replaced with the target coefficient set, and the target characterization expression of the zipper smoothness is constructed. Compared with the expression of the zipper smoothness of the related technology, the calculated zipper smoothness is more accurate and has stronger engineering applicability. At the same time. The zipper design parameter determination model constructed according to the target characterization expression of the zipper smoothness also considers the influence of multiple other factors on the design parameters, making the design parameters more accurate. The target characterization expression and the zipper design parameter determination model are simple and efficient, which is convenient for quickly adjusting the performance of the zipper during the design and production process, and provides an accurate basis for the mass production and quality control of zippers.

[0052] In some embodiments, step S120 acquires a simulation data set, comprising the following steps: Step S121: Acquire simulation parameters.

[0053] The simulation parameters include the simulation tooth pitch, simulation tooth height and simulation guide groove angle.

[0054] Step S122: inputting simulation parameters into a simulation model of the zipper pulling process established using the finite element method, and outputting a simulated zipper smoothness.

[0055] 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, establishing a geometric model of the zipper according to the size of the specified model of the zipper. Exemplarily, the initial simulation tooth pitch is 2.5 mm, the initial simulation tooth height is H=1.8 mm, and the initial simulation guide groove angle is 73∘. Meshing, that is, refining the meshing of key areas of the zipper (such as chain teeth, guide grooves and component contact areas) to ensure that the mesh accuracy is high enough to accurately simulate the mechanical behavior during the pulling and closing process. Physical property definition, that is, defining the physical and mechanical properties of the zipper material, such as elastic modulus, Poisson's ratio, friction coefficient, etc. Loading conditions, that is, setting the loading conditions and boundary conditions of the zipper, such as the moving speed of the guide groove, the external force during the pulling and closing process, and the friction between the contact surfaces of each component.

[0056] Step S123: changing the size of the simulation parameters, and repeatedly executing the steps of obtaining the simulation parameters to outputting the simulated zipper smoothness, until the stop condition is reached, and obtaining a simulation data set.

[0057] It can be understood that this step is a simulation analysis process, which analyzes the influence of different simulation parameters (simulated tooth pitch, simulated tooth height, simulated guide groove angle) on the light glide of the simulated zipper. In the simulation, the guide groove moves along the direction of the chain belt composed of chain teeth, simulating the bite process of the chain teeth of the chain belt, and recording the light glide of the simulated zipper (i.e., the pulling force required during the movement of the guide groove).

[0058] By changing the size of the simulation parameters, sufficient simulation data can be obtained for fitting the target coefficient set. For example, the size of the simulation parameters can be changed in the range of the simulation pitch P from 2 mm to 3 mm, the simulation tooth height H from 1.5 mm to 2 mm, and the simulation guide groove angle θ from 60° to 80°.

[0059] Finally, when the stopping condition is reached (the stopping condition can be that the number of changes in the size of the simulation parameters is greater than a threshold), that is, after the simulation is completed, the simulated zipper smoothness S, the simulated tooth pitch P corresponding to the simulated zipper smoothness S, the simulated tooth height H and the simulated guide groove angle θ are extracted from each simulation result to obtain a simulation data set.

[0060] Exemplarily, the simulation data set is shown in the following table:

[0061] The target coefficient set obtained by fitting the simulation data set in the above table is:

[0062] The present application also provides a method for determining zipper design parameters. The execution subject of the determination method may be an electronic device, and the electronic device includes a desktop computer, a server, a smart phone or a laptop computer, etc. The method includes: Step S210: obtaining the tooth height, tooth pitch and zipper smoothness.

[0063] Step S220: input the tooth height, tooth pitch and zipper light slip into the guide groove angle determination model of the zipper, and output the guide groove angle. The guide groove angle determination model is the guide groove angle determination model provided by the above technical solution.

[0064] Figure 3 This is a schematic diagram of the structure of the electronic device provided in this application. Figure 3 As shown, the electronic device 10 includes: Processor 11, memory 12 and bus 13; The memory 12 is used to store the computer program code of the processor 11; The processor 11 is configured to execute the technical solution of the method for characterizing the smoothness of a zipper or the technical solution of the method for determining the design parameters of a zipper in any of the aforementioned method embodiments by executing the computer program code.

[0065] Optionally, the memory 12 may be independent or integrated with the processor 11 .

[0066] The memory 12 is connected to the processor 11 via the bus 13 and completes the communication between them.

[0067] Optionally, the memory 12 may include a random access memory (RAM), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0068] The bus 13 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0069] The above-mentioned processor can be a general-purpose processor, including a central processing unit CPU, a network processor (NP), etc.; it can 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.

[0070] The electronic device 10 is used to execute the technical solution provided in any of the aforementioned method embodiments, and its implementation principle and technical effect are similar and will not be described in detail here.

[0071] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the computer program implements the technical solution of the method for characterizing the smoothness of a zipper or the method for determining the design parameters of a zipper as described above.

[0072] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to 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; The initial coefficient set of the initial characterization expression is replaced with the target coefficient set to construct a target characterization expression for the zipper's smoothness, and the target characterization expression for the zipper's smoothness is used to construct a determination model for zipper design parameters.

2. The method according to claim 1, characterized in that The mapping relationships between the guide groove angle of the zipper and the tooth height and the tooth pitch respectively include a direct 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.

3. The method according to claim 1, characterized in that The mapping relationships between the zipper smoothness and the guide groove angle, tooth height and tooth pitch respectively 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 direct proportional relationship between the zipper smoothness and the tooth pitch.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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 7, and the guide groove angle is output.

9. An electronic device, characterized in that: include: Processor and memory; The memory is coupled to the processor, and the memory is used to store a 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 7 or the method according to claim 8.

10. 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 7 or the method according to claim 8 is implemented.

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