Method, device and equipment for determining position of tail door spare tire and storage medium

Abstract

The invention discloses a position determining method, device and equipment for a tail door spare tire and a storage medium, and the method comprises the steps that first barycentric coordinates corresponding to all alternative positions of the tail door spare tire and the dynamic stiffness of a mounting surface of a tail door hinge are obtained; according to the first barycentric coordinate, determining the space supporting force borne by the mounting surface of the tail door hinge; according to the space supporting force and the dynamic stiffness, the dynamic displacement amount of the mounting face of the tail door hinge is determined; and according to the dynamic displacement corresponding to each first barycentric coordinate, determining a target coordinate from the plurality of first barycentric coordinates as a target position of the tail door spare tire. According to the technical scheme, the optimal solution of the spare tire position can be obtained through calculation in the spare tire arrangement stage, and the design period is shortened.

Description

Technical Field

[0001] The present application belongs to the field of vehicle design technology, and in particular relates to a method, device, equipment and storage medium for determining the position of a tailgate spare tire. Background Art

[0002] The spare tire hanging on the side-opening tailgate is one of the iconic features of off-road vehicles, which has the advantages of saving space inside the vehicle and increasing ground clearance. The layout position of the spare tire on the tailgate affects the load of the entire tailgate and body structure, and the deviation of the layout position can easily cause abnormal noise and deformation of the tailgate.

[0003] In the related art, the spare tire is usually initially arranged according to the styling requirements, sheet metal boundaries and tire size, and then the tailgate and body support structure are designed, and performance simulation analysis is performed. According to the analysis results, the position of the spare tire is adjusted and the support structure is redesigned until the performance requirements are met.

[0004] The above solution requires that after the performance simulation analysis is completed, the position of the spare tire be repeatedly adjusted and the supporting structure of the tailgate and the vehicle body be redesigned according to the adjusted position to meet the performance requirements, resulting in a long design cycle. Summary of the invention

[0005] The embodiments of the present application provide a method, device, equipment and storage medium for determining the position of a tailgate spare tire, thereby, at least to a certain extent, being able to obtain the optimal solution for the spare tire position by calculation during the spare tire layout phase, thereby shortening the design cycle.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0007] According to a first aspect of an embodiment of the present application, a method for determining a position of a tailgate spare tire is provided, comprising:

[0008] Obtaining the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the mounting surface of the tailgate hinge;

[0009] determining, according to the first center of gravity coordinate, a spatial supporting force exerted on the mounting surface of the tailgate hinge;

[0010] determining a dynamic displacement of a mounting surface of the tailgate hinge according to the spatial supporting force and the dynamic stiffness;

[0011] According to the dynamic displacement corresponding to each of the first center of gravity coordinates, a target coordinate is determined from a plurality of the first center of gravity coordinates as a target position of the tailgate spare tire.

[0012] In some embodiments, the tailgate hinge includes an upper hinge and a lower hinge, the spatial support force includes a first spatial support force received by a mounting surface of the upper hinge and a second spatial support force received by a mounting surface of the lower hinge, and determining the spatial support force received by the mounting surface of the tailgate hinge according to the first center of gravity coordinate includes:

[0013] Obtaining a first center coordinate of the mounting surface of the upper hinge, a second center coordinate of the mounting surface of the lower hinge, a coordinate of an engagement point of a tailgate lock, a second center of gravity coordinate of the tailgate assembly, a first gravity of the tailgate spare tire, and a second gravity of the tailgate assembly;

[0014] The first space support force and the second space support force are determined according to the first center of gravity coordinates, the first center coordinates, the second center coordinates, the coordinates of the tailgate lock engagement point, the second center of gravity coordinates, the first gravity, and the second gravity.

[0015] In some embodiments, the dynamic stiffness includes a first dynamic stiffness of a mounting surface of the upper hinge and a second dynamic stiffness of a mounting surface of the lower hinge, the dynamic displacement includes a first dynamic displacement of the mounting surface of the upper hinge and a second dynamic displacement of the mounting surface of the lower hinge, and determining the dynamic displacement of the mounting surface of the tailgate hinge according to the spatial support force and the dynamic stiffness includes:

[0016] Dividing the first spatial supporting force by the first dynamic stiffness to obtain the first dynamic displacement;

[0017] The second spatial supporting force is divided by the second dynamic stiffness to obtain the second dynamic displacement.

[0018] In some embodiments, determining a target coordinate as a target position of the tailgate spare tire from a plurality of the first center of gravity coordinates according to the dynamic displacement corresponding to each of the first center of gravity coordinates includes:

[0019] Determine the larger of the first dynamic displacement amount and the second dynamic displacement amount corresponding to each of the first barycentric coordinates as the evaluation parameter corresponding to the first barycentric coordinate;

[0020] According to the evaluation parameter corresponding to each of the first center of gravity coordinates, a target coordinate is determined from the plurality of first center of gravity coordinates as the target position of the tailgate spare tire.

[0021] In some embodiments, determining a target coordinate as a target position of the tailgate spare tire from a plurality of the first center of gravity coordinates according to an evaluation parameter corresponding to each of the first center of gravity coordinates includes:

[0022] Obtaining the sheet metal structure boundary, the appearance boundary of the tailgate spare tire and the installation condition of the tire size;

[0023] According to the evaluation parameters corresponding to each of the first center of gravity coordinates, the first center of gravity coordinates, the sheet metal structure boundary, the appearance styling boundary and the installation conditions of the tire size, a target coordinate is determined from multiple first center of gravity coordinates as the target position of the tailgate spare tire.

[0024] In some embodiments, determining a target coordinate as a target position of the tailgate spare tire from a plurality of the first barycentric coordinates according to the evaluation parameter corresponding to each of the first barycentric coordinates, the first barycentric coordinates, the sheet metal structure boundary, the appearance styling boundary, and the installation condition of the tire size includes:

[0025] Filter out the first center of gravity coordinates that meet the installation conditions of the sheet metal structure boundary, the appearance shape boundary and the tire size from the plurality of first center of gravity coordinates;

[0026] The first center of gravity coordinate with the smallest evaluation parameter among the screened first center of gravity coordinates is determined as the target coordinate, and the target coordinate is used as the target position of the tailgate spare tire.

[0027] According to a second aspect of an embodiment of the present application, a device for determining a position of a tailgate spare tire is provided, comprising:

[0028] A data acquisition module, used to acquire the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the mounting surface of the tailgate hinge;

[0029] a spatial support force determination module, configured to determine the spatial support force exerted on the installation surface of the tailgate hinge according to the first center of gravity coordinate;

[0030] A dynamic displacement determination module, used to determine the dynamic displacement of the mounting surface of the tailgate hinge according to the spatial support force and the dynamic stiffness;

[0031] The spare tire position determination module is used to determine a target coordinate from a plurality of the first center of gravity coordinates as a target position of the tailgate spare tire according to the dynamic displacement corresponding to each of the first center of gravity coordinates.

[0032] According to a third aspect of an embodiment of the present application, a device for determining the position of a tailgate spare tire is provided, comprising a processor and a memory, wherein the memory stores computer program instructions that can be executed by the processor, and when the processor executes the computer program instructions, the steps of the method described in any one of the first aspects above are implemented.

[0033] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor is prompted to implement the steps of the method described in any one of the first aspects above.

[0034] According to a fifth aspect of an embodiment of the present application, a computer program product is provided, including a computer program. When the computer program product is executed by a processor, it prompts the processor to implement the steps of the method described in any one of the first aspects above.

[0035] In the present application, the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the mounting surface of the tailgate hinge are obtained; the spatial support force on the mounting surface of the tailgate hinge is determined according to the first center of gravity coordinates; the dynamic displacement of the mounting surface of the tailgate hinge is determined according to the spatial support force and the dynamic stiffness; and the target coordinates are determined from a plurality of the first center of gravity coordinates according to the dynamic displacement corresponding to each of the first center of gravity coordinates as the target position of the tailgate spare tire. Among them, by calculating the spatial support force on the mounting surface of the tailgate hinge through parametric mechanics, calculating the dynamic displacement of the mounting surface of the tailgate hinge according to the dynamic stiffness and spatial support force of the mounting surface of the tailgate hinge, and using the dynamic displacement as an evaluation index, the optimal solution for the spare tire layout position can be screened out during the spare tire layout stage, which shortens the design cycle, saves manpower, and is conducive to the lightweight design of the tailgate and body support structure.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0038] Figure 1 A schematic flow chart of a method for determining the position of a tailgate spare tire in one embodiment is shown;

[0039] Figure 2 A schematic diagram of the forces acting on a tailgate assembly in one embodiment is shown;

[0040] Figure 3 A block diagram of a device for determining the position of a tailgate spare tire in one embodiment is shown;

[0041] Figure 4A schematic structural diagram of a device for determining the position of a tailgate spare tire in one embodiment is shown. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0044] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0045] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0046] It should also be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those shown or described.

[0047] In order to enable those skilled in the art to better understand the present application, the application scenarios involved in the present application are first briefly described.

[0048] In the related art, in the initial layout stage of the spare tire, the initial layout of the spare tire is usually carried out according to the styling requirements, sheet metal boundaries and tire size, and then the tailgate and body support structure are designed, and a performance simulation analysis is performed. According to the analysis results, the position of the spare tire is adjusted and the support structure is redesigned until the performance requirements are met, and the spare tire layout is completed. This solution cannot determine whether the position of the spare tire is reasonable and whether the load distribution is optimal in the initial layout stage of the spare tire. After the performance simulation analysis is completed, the position of the spare tire needs to be repeatedly adjusted and the tailgate and body support structure needs to be redesigned according to the adjusted position to meet the performance requirements. The design cycle is relatively long. If the spare tire is not positioned properly, a thicker and heavier support structure is required to meet the performance requirements, which is not conducive to the lightweight design of the body.

[0049] The present application proposes a method for determining the position of a spare tire, which calculates the spatial supporting force on the mounting surface of a tailgate hinge through parametric mechanics, calculates the dynamic displacement of the mounting surface of the tailgate hinge according to the dynamic stiffness of the mounting surface of the tailgate hinge and the spatial supporting force, and uses the dynamic displacement as an evaluation index. This method can screen out the optimal solution for the spare tire layout position during the spare tire layout stage, shortens the design cycle, saves manpower, and is conducive to the lightweight design of the tailgate and vehicle body support structure.

[0050] Figure 1 FIG. 1 is a flow chart showing a method for determining the position of a spare tire at a tailgate according to an embodiment of the present invention. Figure 1 As shown, a method for determining the position of a tailgate spare tire is provided, and the method may include the following steps 101 to 104.

[0051] In step 101, the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the installation surface of the tailgate hinge are obtained.

[0052] Among them, the tailgate spare tire refers to the spare tire arranged on the tailgate of the vehicle. The embodiment of the present application needs to screen out the target position of the tailgate spare tire from multiple candidate positions.

[0053] It can be understood that each candidate position corresponds to a first barycentric coordinate. In the space coordinate system, the first barycentric coordinate can be expressed as P(P x ,P y ,P z )express.

[0054] The dynamic stiffness of the mounting surface of the tailgate hinge can be obtained by simplified calculation of the dynamic stiffness of several vertices of the tailgate hinge.

[0055] In step 102, the spatial supporting force on the installation surface of the tailgate hinge is determined according to the first center of gravity coordinate.

[0056] Among them, the tailgate hinge usually includes an upper hinge and a lower hinge. Correspondingly, the spatial supporting force exerted on the mounting surface of the tailgate hinge includes a first spatial supporting force exerted on the mounting surface of the upper hinge and a second spatial supporting force exerted on the mounting surface of the lower hinge.

[0057] In some embodiments, the first center coordinate of the mounting surface of the upper hinge, the second center coordinate of the mounting surface of the lower hinge, the coordinates of the tailgate lock engagement point, the second center of gravity coordinates of the tailgate assembly, the first gravity of the tailgate spare tire and the second gravity of the tailgate assembly can be obtained; the first space support force and the second space support force can be determined based on the first center of gravity coordinates, the first center coordinates, the second center coordinates, the coordinates of the tailgate lock engagement point, the second center of gravity coordinates, the first gravity and the second gravity.

[0058] Figure 2 FIG. 2 shows a schematic diagram of the force of a tailgate assembly in one embodiment. Figure 2 As shown, H1 is the center point of the mounting surface of the upper hinge, H2 is the center point of the mounting surface of the lower hinge, H3 is the tailgate lock engagement point, O is the center of gravity of the tailgate assembly, P is the center of gravity of the spare tire, and R is the hinge axis.

[0059] F1 is the first spatial support force on the mounting surface of the upper hinge, F2 is the second spatial support force on the mounting surface of the lower hinge, and F3 is the third spatial support force on the locking engagement point, with the direction being tangential to the rotation direction. G t is the weight of the spare tire, and its direction is downward in the z direction. G1 is the weight of the tailgate assembly, and its direction is downward in the z direction.

[0060] Through force analysis, the first center of gravity coordinate P (P x ,P y ,P z ) and the relationship between the first spatial support force F1 on the installation surface of the upper hinge, the first center of gravity coordinate P (P x ,P y ,P z ) and the relationship f2(P) between the second spatial support force F2 received by the mounting surface of the lower hinge, and then according to the first center of gravity coordinate P(P x ,P y ,P z ) Calculate the first spatial supporting force F1 and the second spatial supporting force F2.

[0061] Taking the spare tire and tailgate assembly as the force analysis object, F 1x 、F 1y 、F 1z are the components of the first spatial support force F1 on the X, Y, and Z axes in the spatial coordinate system, respectively. 2x 、F 2y 、F 2zare the components of the second spatial support force F2 on the X, Y, and Z axes, respectively. 3x 、F 3y 、F 3z are the components of the third spatial support force F3 on the X, Y, and Z axes, respectively, and H 1x , H 1y , H 1z are the coordinates of point H1 on the X, Y, and Z axes, that is, the first center coordinate is (H 1x ,H 1y ,H 1z ), H 2x , H 2y , H 2z are the coordinates of point H2 on the X, Y, and Z axes, that is, the second center coordinate is (H 2x ,H 2y ,H 2z ), H 3x , H 3y , H 3z are the coordinates of point H3 on the X, Y, and Z axes, that is, the third center coordinate is (H 3x ,H 3y ,H 3z ), O x , O y , O z are the coordinates of point O on the X, Y, and Z axes, that is, the coordinates of the second centroid are (O x ,O y ,O z ).

[0062] According to the characteristics of force balance, the vector sum of the forces in the X, Y, and Z directions should all be 0, from which the following formula can be obtained:

[0063] ∑F x =F 1x -F 2x -F 3x =0Formula 1;

[0064] ∑F y =F 1y -F 2y +F 3y =0Formula 2;

[0065] ∑F z =F 1z +F 2z +F 3z -G1-G t =0Formula 3.

[0066] According to the characteristics of moment balance, the sum of the moments of the force on the X, Y, and Z axes should all be 0, from which the following formula can be obtained:

[0067] ∑M x (F)=F 1y ·H 1z +F 1z ·H 1y +F 2y ·H 2z +F 2z ·H 2y +F 3y ·H 3z +F 3z ·

[0068] H 3y +P y ·G t +O y ·G1=0Formula 4;

[0069] ∑M y (F)=F 1x ·H 1z +F 1z ·H 1x +F 2x ·H 2z +F 2z ·H 2x +F 3x ·H 3z +F 3z ·

[0070] H 3x +P x ·G t +O x ·G1=0Formula 5;

[0071] ∑M z (F)=F 1x ·H 1y +F 1y ·H 1x +F 2x ·H 2y +F 2y ·H 2x +F 3x ·H 3y +F 3y ·

[0072] H 3x =0Formula 6;

[0073] According to the characteristics of moment balance, the third space support force F3, the gravity of the tailgate assembly G1, the gravity of the spare tire G t The sum of the moments about the hinge axis R is 0, from which the following formula can be obtained:

[0074] ∑M R (F)=LP ·G tx +L o ·G 1x +L3·F3=0Formula 7;

[0075] Among them, L p G is the distance from the center of gravity of the spare tire to the hinge axis R, tx is the X-direction component of the weight of the spare tire relative to the hinge axis R, L o G is the distance from the center of gravity of the tailgate assembly to the hinge axis R, 1x is the component of the gravity of the tailgate assembly relative to the hinge axis R in the X direction, and L3 is the distance from the lock engagement point to the hinge axis R.

[0076] Combining the above formulas 1 to 7, we can obtain the first centroid coordinates P(P x ,P y ,P z ) and the first spatial support force F1 received by the mounting surface of the upper hinge:

[0077] f1(P)=f1(P x ,P y ,P z )=F1(F 1x ,F 1y ,F 1z ) Formula 8;

[0078] The first barycentric coordinate P(P x ,P y ,P z ) and the second spatial support force F2 received by the mounting surface of the lower hinge:

[0079] f2(P)=f2(P x ,P y ,P z )=F2(F 2x ,F 2y ,F 2z ) Formula 9.

[0080] In step 103, the dynamic displacement of the installation surface of the tailgate hinge is determined according to the spatial supporting force and the dynamic stiffness.

[0081] The dynamic stiffness includes a first dynamic stiffness of the mounting surface of the upper hinge and a second dynamic stiffness of the mounting surface of the lower hinge, and the dynamic displacement includes a first dynamic displacement of the mounting surface of the upper hinge and a second dynamic displacement of the mounting surface of the lower hinge.

[0082] The first dynamic stiffness can be obtained by simplified calculation of the dynamic stiffness of the four vertices of the upper hinge, and the second dynamic stiffness can be obtained by simplified calculation of the dynamic stiffness of the four vertices of the lower hinge.

[0083] In some embodiments, the first spatial supporting force may be divided by the first dynamic stiffness to obtain a first dynamic displacement; and the second spatial supporting force may be divided by the second dynamic stiffness to obtain a second dynamic displacement.

[0084] In step 104, according to the dynamic displacement corresponding to each first center of gravity coordinate, a target coordinate is determined from the plurality of first center of gravity coordinates as the target position of the tailgate spare tire.

[0085] In some embodiments, the larger of the first dynamic displacement and the second dynamic displacement corresponding to each first center of gravity coordinate can be determined as the evaluation parameter corresponding to the first center of gravity coordinate; based on the evaluation parameter corresponding to each first center of gravity coordinate, the target coordinate is determined from multiple first center of gravity coordinates as the target position of the tailgate spare tire.

[0086] The evaluation parameters corresponding to the first barycentric coordinates can be expressed by the following formula:

[0087]

[0088] Among them, K1 is the first dynamic stiffness and K2 is the second dynamic stiffness.

[0089] It can be understood that the smaller the evaluation parameter S is, the smaller the deformation of the installation surface of the hinge is, and the better the position of the corresponding first center of gravity coordinate is.

[0090] In some embodiments, the sheet metal structure boundary, the appearance styling boundary of the tailgate spare tire and the installation conditions of the tire size can be obtained; based on the evaluation parameters corresponding to each first center of gravity coordinate, the first center of gravity coordinate, the sheet metal structure boundary, the appearance styling boundary and the installation conditions of the tire size, the target coordinate is determined from multiple first center of gravity coordinates as the target position of the tailgate spare tire.

[0091] The installation condition of the tire size can be determined by combining the tire size with the distance limit of the rear bumper and the rear field of view. In some embodiments, the installation condition of the tire size can be P Z =710, the sheet metal structure boundary can be 4090≥P x ≥4050, the appearance boundary can be 200≥P y ≥0.

[0092] During the implementation process, the first center of gravity coordinate that meets the installation conditions of the sheet metal structure boundary, the appearance styling boundary and the tire size can be screened out from multiple first center of gravity coordinates; the first center of gravity coordinate with the smallest evaluation parameter among the screened out first center of gravity coordinates is determined as the target coordinate, and the target coordinate is used as the target position of the spare tire on the tailgate.

[0093] This process can be implemented in simulation software such as EXCEL software, CATIA software or MATLAB.

[0094] Taking a certain car model as an example, the first center coordinate H1 (3768,626,434), the second center coordinate H2 (3768,626,824), the coordinate of the tailgate lock engagement point H3 (3778,-562,706), the hinge axis R (3854,619), the second center of gravity coordinate O (3817,19,774), the gravity of the tailgate assembly G1 = 420N, the gravity of the spare tire G t =350N, first dynamic stiffness K1 = (3200, 9000, 13000), second dynamic stiffness K2 = (4000, 16500, 12500), sheet metal structure restriction requirement 4090 ≥ P x ≥4050, appearance restriction requirement 200≥P y ≥0, tire installation restriction requirement P z =710, and the optimal target coordinates P(4050,200,710) are obtained through EXCEL planning and solving.

[0095] The embodiment of the present application obtains the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the installation surface of the tailgate hinge; determines the spatial support force on the installation surface of the tailgate hinge according to the first center of gravity coordinates; determines the dynamic displacement of the installation surface of the tailgate hinge according to the spatial support force and the dynamic stiffness; and determines the target coordinates from multiple first center of gravity coordinates as the target position of the tailgate spare tire according to the dynamic displacement corresponding to each first center of gravity coordinate. Among them, the spatial support force on the installation surface of the tailgate hinge is calculated by parametric mechanics, the dynamic displacement of the installation surface of the tailgate hinge is calculated according to the dynamic stiffness and spatial support force of the installation surface of the tailgate hinge, and the dynamic displacement is used as an evaluation index, so that the optimal solution for the spare tire layout position can be screened out during the spare tire layout stage, which shortens the design cycle, saves manpower, and is conducive to the lightweight design of the tailgate and body support structure.

[0096] The following describes an embodiment of the device of the present application, which can be used to execute the method for determining the position of the spare tire on the tailgate in the above embodiment of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method for determining the position of the spare tire on the tailgate in the above embodiment of the present application.

[0097] Figure 3 FIG. 2 shows a block diagram of a device for determining the position of a tailgate spare tire in one embodiment. Figure 3As shown, the position determination device of the tailgate spare tire of the embodiment of the present application includes: a data acquisition module 301, a spatial support force determination module 302, a dynamic displacement determination module 303 and a spare tire position determination module 304, wherein the data acquisition module 301 is used to obtain the first center of gravity coordinates corresponding to each alternative position of the tailgate spare tire and the dynamic stiffness of the installation surface of the tailgate hinge; the spatial support force determination module 302 is used to determine the spatial support force on the installation surface of the tailgate hinge according to the first center of gravity coordinates; the dynamic displacement determination module 303 is used to determine the dynamic displacement of the installation surface of the tailgate hinge according to the spatial support force and the dynamic stiffness; the spare tire position determination module 304 is used to determine the target coordinate from multiple first center of gravity coordinates as the target position of the tailgate spare tire according to the dynamic displacement corresponding to each first center of gravity coordinate.

[0098] In some embodiments, the tailgate hinge includes an upper hinge and a lower hinge, and the spatial support force includes a first spatial support force exerted on the mounting surface of the upper hinge and a second spatial support force exerted on the mounting surface of the lower hinge. The spatial support force determination module 302 can also be used to obtain the first center coordinates of the mounting surface of the upper hinge, the second center coordinates of the mounting surface of the lower hinge, the coordinates of the tailgate lock engagement point, the second center of gravity coordinates of the tailgate assembly, the first gravity of the tailgate spare tire, and the second gravity of the tailgate assembly; determine the first spatial support force and the second spatial support force according to the first center of gravity coordinates, the first center coordinates, the second center coordinates, the coordinates of the tailgate lock engagement point, the second center of gravity coordinates, the first gravity, and the second gravity.

[0099] In some embodiments, the dynamic stiffness includes a first dynamic stiffness of the mounting surface of the upper hinge and a second dynamic stiffness of the mounting surface of the lower hinge, the dynamic displacement includes a first dynamic displacement of the mounting surface of the upper hinge and a second dynamic displacement of the mounting surface of the lower hinge, and the dynamic displacement determination module 303 can also be used to divide the first spatial support force by the first dynamic stiffness to obtain a first dynamic displacement; and divide the second spatial support force by the second dynamic stiffness to obtain a second dynamic displacement.

[0100] In some embodiments, the spare tire position determination module 304 can also be used to determine the larger of the first dynamic displacement and the second dynamic displacement corresponding to each first center of gravity coordinate as the evaluation parameter corresponding to the first center of gravity coordinate; according to the evaluation parameter corresponding to each first center of gravity coordinate, determine the target coordinate from multiple first center of gravity coordinates as the target position of the tailgate spare tire.

[0101] In some embodiments, the spare tire position determination module 304 can also be used to obtain the sheet metal structure boundary, the appearance styling boundary of the tailgate spare tire and the installation conditions of the tire size; according to the evaluation parameters corresponding to each first center of gravity coordinate, the first center of gravity coordinate, the sheet metal structure boundary, the appearance styling boundary and the installation conditions of the tire size, the target coordinate is determined from multiple first center of gravity coordinates as the target position of the tailgate spare tire.

[0102] In some embodiments, the spare tire position determination module 304 can also be used to filter out a first center of gravity coordinate that meets the installation conditions of the sheet metal structure boundary, the exterior styling boundary and the tire size from multiple first center of gravity coordinates; determine the first center of gravity coordinate with the smallest evaluation parameter among the filtered out first center of gravity coordinates as the target coordinate, and use the target coordinate as the target position of the spare tire on the tailgate.

[0103] Based on the same inventive concept, the embodiment of the present application also provides a device for determining the position of the tailgate spare tire, referring to Figure 4 , shows a schematic diagram of the structure of a device for determining the position of a tailgate spare tire in an embodiment of the present application, wherein the device for determining the position of a tailgate spare tire includes one or more memories 404, one or more processors 402, and at least one computer program (computer program instruction) stored in the memory 404 and executable on the processor 402, and the processor 402 implements the method described above when executing the computer program.

[0104] Among them, Figure 4 In the embodiment of the present invention, a bus architecture (represented by bus 400) is shown, which may include any number of interconnected buses and bridges, and bus 400 links various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 405 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 may be used to store data used by processor 402 when performing operations.

[0105] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium, in which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor is prompted to implement the steps of the method as described above.

[0106] Based on the same inventive concept, an embodiment of the present application provides a computer program product, including a computer program. When the computer program product is executed by a processor, it prompts the processor to implement the steps of the method as described above.

[0107] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0109] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0110] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly or all or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., which can store computer program instructions.

[0111] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A method for determining the position of a tailgate spare tire, characterized in that: include: Obtaining the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the mounting surface of the tailgate hinge; determining, according to the first center of gravity coordinate, a spatial supporting force exerted on the mounting surface of the tailgate hinge; determining a dynamic displacement of a mounting surface of the tailgate hinge according to the spatial supporting force and the dynamic stiffness; According to the dynamic displacement corresponding to each of the first center of gravity coordinates, a target coordinate is determined from a plurality of the first center of gravity coordinates as a target position of the tailgate spare tire.

2. The method for determining the position of the tailgate spare tire according to claim 1, characterized in that: The tailgate hinge includes an upper hinge and a lower hinge, the spatial support force includes a first spatial support force received by a mounting surface of the upper hinge and a second spatial support force received by a mounting surface of the lower hinge, and determining the spatial support force received by the mounting surface of the tailgate hinge according to the first center of gravity coordinate includes: Obtaining a first center coordinate of the mounting surface of the upper hinge, a second center coordinate of the mounting surface of the lower hinge, a coordinate of an engagement point of a tailgate lock, a second center of gravity coordinate of the tailgate assembly, a first gravity of the tailgate spare tire, and a second gravity of the tailgate assembly; The first space support force and the second space support force are determined according to the first center of gravity coordinates, the first center coordinates, the second center coordinates, the coordinates of the tailgate lock engagement point, the second center of gravity coordinates, the first gravity, and the second gravity.

3. The method for determining the position of the tailgate spare tire according to claim 2, characterized in that: The dynamic stiffness includes a first dynamic stiffness of the mounting surface of the upper hinge and a second dynamic stiffness of the mounting surface of the lower hinge, the dynamic displacement includes a first dynamic displacement of the mounting surface of the upper hinge and a second dynamic displacement of the mounting surface of the lower hinge, and determining the dynamic displacement of the mounting surface of the tailgate hinge according to the spatial support force and the dynamic stiffness includes: Dividing the first spatial supporting force by the first dynamic stiffness to obtain the first dynamic displacement; The second spatial supporting force is divided by the second dynamic stiffness to obtain the second dynamic displacement.

4. The method for determining the position of the tailgate spare tire according to claim 3, characterized in that: The step of determining a target coordinate as a target position of the tailgate spare tire from a plurality of the first center of gravity coordinates according to the dynamic displacement corresponding to each of the first center of gravity coordinates includes: Determine the larger of the first dynamic displacement amount and the second dynamic displacement amount corresponding to each of the first barycentric coordinates as the evaluation parameter corresponding to the first barycentric coordinate; According to the evaluation parameter corresponding to each of the first center of gravity coordinates, a target coordinate is determined from the plurality of first center of gravity coordinates as the target position of the tailgate spare tire.

5. The method for determining the position of the tailgate spare tire according to claim 4, characterized in that: The step of determining a target coordinate as a target position of the tailgate spare tire from a plurality of the first center of gravity coordinates according to an evaluation parameter corresponding to each of the first center of gravity coordinates includes: Obtaining the sheet metal structure boundary, the appearance boundary of the tailgate spare tire and the installation condition of the tire size; According to the evaluation parameters corresponding to each of the first center of gravity coordinates, the first center of gravity coordinates, the sheet metal structure boundary, the appearance styling boundary and the installation conditions of the tire size, a target coordinate is determined from multiple first center of gravity coordinates as the target position of the tailgate spare tire.

6. The method for determining the position of the tailgate spare tire according to claim 5, characterized in that: The step of determining a target coordinate as a target position of the tailgate spare tire from a plurality of the first barycentric coordinates according to the evaluation parameter corresponding to each of the first barycentric coordinates, the first barycentric coordinates, the sheet metal structure boundary, the appearance styling boundary, and the installation condition of the tire size includes: Filter out the first center of gravity coordinates that meet the installation conditions of the sheet metal structure boundary, the appearance shape boundary and the tire size from the plurality of first center of gravity coordinates; The first center of gravity coordinate with the smallest evaluation parameter among the screened first center of gravity coordinates is determined as the target coordinate, and the target coordinate is used as the target position of the tailgate spare tire.

7. A device for determining the position of a tailgate spare tire, characterized in that: include: A data acquisition module, used to acquire the first center of gravity coordinates corresponding to each candidate position of the tailgate spare tire and the dynamic stiffness of the mounting surface of the tailgate hinge; a spatial support force determination module, configured to determine the spatial support force exerted on the installation surface of the tailgate hinge according to the first center of gravity coordinate; A dynamic displacement determination module, used to determine the dynamic displacement of the mounting surface of the tailgate hinge according to the spatial support force and the dynamic stiffness; The spare tire position determination module is used to determine a target coordinate from a plurality of the first center of gravity coordinates as a target position of the tailgate spare tire according to the dynamic displacement corresponding to each of the first center of gravity coordinates.

8. A device for determining the position of a tailgate spare tire, comprising a processor and a memory, characterized in that: The memory stores computer program instructions that can be executed by the processor, and when the processor executes the computer program instructions, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, which, when executed by a processor, prompt the processor to implement the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program product is executed by a processor, the processor is prompted to implement the steps of the method according to any one of claims 1 to 6.

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