Method and device for determining a toe angle of a tire, and computer equipment

Abstract

The application discloses a method and device for determining a tire toe angle and a computer device. The method comprises the following steps: acquiring tire parameters of a target tire, wherein the tire parameters at least include a camber angle of the target tire, a radius of the target tire, and a rim radius of the target tire; determining a first footprint deflection angle corresponding to the camber angle according to the parameters of the target tire; determining a second footprint deflection angle corresponding to a toe angle of the target tire according to the first footprint deflection angle, wherein the first footprint deflection angle and the second footprint deflection angle are equal in size and opposite in direction; and determining the toe angle of the target tire according to the second footprint deflection angle. The application solves the technical problem that a method for obtaining a toe angle matched with a camber angle of a tire is complex in the prior art.

Description

Technical Field

[0001] The present application relates to the field of tire simulation, and more specifically, to a method, device, and computer equipment for determining a tire toe angle. Background Art

[0002] Wheel toe is the difference between the center distances of the front wheels and is crucial to vehicle performance and tire life. When viewed from the front, the front tires are not perpendicular to the ground. The angle between the tire's own plane and the longitudinal vertical plane is called camber. Camber improves vehicle safety and steering control, making wheel operation safer and easier for the driver. Improper toe and camber design can cause significant front wheel slip during driving. Excessive slip increases tire wear, impairing vehicle performance, directly impacting vehicle stability and tire life, and negatively affecting fuel economy. Wheel alignment parameters control the relative angles between the suspension system and various moving parts, fundamentally maintaining vehicle straightness, improving steering performance, and ensuring the steering system's self-centering function. Adjusting wheel alignment parameters ensures that these independent yet closely coordinated parameters coordinate correctly and consistently, ensuring safe driving, good fuel economy, and preventing tire wear. In related technologies, the matching of toe angle and camber angle of commercial vehicles mainly relies on a combination of experience and experiments, which requires a lot of time and effort.

[0003] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0004] The embodiments of the present application provide a method, apparatus, and computer device for determining a tire toe angle, so as to at least solve the technical problem of the complexity of the method for obtaining a toe angle that matches the tire camber angle in the related art.

[0005] According to one aspect of an embodiment of the present application, a method for determining a tire toe angle is provided, comprising: obtaining tire parameters of a target tire, the tire parameters including at least: the camber angle of the target tire, the radius of the target tire, and the rim radius of the target tire; determining a first footprint deflection angle corresponding to the camber angle based on the parameters of the target tire; determining a second footprint deflection angle corresponding to the toe angle of the target tire based on the first footprint deflection angle, the first footprint deflection angle and the second footprint deflection angle being equal in magnitude and opposite in direction; and determining the toe angle of the target tire based on the second footprint deflection angle.

[0006] Optionally, determining the first footprint deflection angle corresponding to the camber angle according to the parameters of the target tire includes: obtaining the sink rate of the target tire, the radius of the target tire, and the rim radius of the target tire from the tire parameters; determining a first target edge according to the sink rate of the target tire, the radius of the target tire, and the rim radius of the target tire, the first footprint being the footprint produced when the target tire only has a camber angle; determining the first footprint deflection angle according to the first target edge, wherein the first target edge is half of the long side of the first footprint.

[0007] Optionally, determining a first target edge based on the sink rate of the target tire, the radius of the target tire and the rim radius of the target tire includes: determining a target coefficient based on the sink rate of the target tire; determining the difference between the radius of the target tire and the rim radius of the target tire as a first difference; determining a second target edge based on the product of the first difference, the target coefficient and the rim radius of the target tire; and determining the first target edge based on the radius of the target tire and the second target edge, wherein the second target edge is half of the center line of the first footprint.

[0008] Optionally, determining the first footprint angle according to the first target edge includes: determining a ratio of the first target edge to a radius of the target tire as a first ratio; and determining the first footprint angle according to the first ratio and the camber angle.

[0009] Optionally, determining the toe angle of the target tire based on the second footprint deflection angle includes: obtaining the vehicle wheelbase and target angle corresponding to the target tire, the target angle being half of the central angle corresponding to the center line of the first footprint; substituting the vehicle wheelbase, the second footprint deflection angle, the target angle and the radius of the target tire into a preset relationship to obtain the toe angle of the target tire, the preset relationship being used to express the relationship between the toe angle and the second footprint deflection angle.

[0010] Optionally, the preset relationship is as shown below:

[0011]

[0012] Wherein, β2 represents the second footprint angle, α represents the camber angle, L represents the vehicle wheelbase, a represents the radius of the target tire, θ0 represents the target angle, and γ represents the toe angle.

[0013] Optionally, after determining the toe angle of the target tire based on the second footprint deflection angle, the method further includes: performing simulation verification on the toe angle, and if the verification passes, outputting indication information, wherein the indication information is used to indicate that the toe angle matches the camber angle.

[0014] According to another aspect of an embodiment of the present application, a device for determining a tire toe angle is also provided, including: an acquisition module for acquiring tire parameters of a target tire, wherein the tire parameters include at least: the camber angle of the target tire, the radius of the target tire, and the rim radius of the target tire; a first determination module for determining a first footprint deviation angle corresponding to the camber angle based on the parameters of the target tire; a second determination module for determining a second footprint deviation angle corresponding to the toe angle of the target tire based on the first footprint deviation angle, wherein the first footprint deviation angle and the second footprint deviation angle are equal in size and opposite in direction; and a third determination module for determining the toe angle of the target tire based on the second footprint deviation angle.

[0015] According to another aspect of the embodiments of the present application, a computer device is provided, including: a memory and a processor, wherein the memory is used to store program instructions; the processor is connected to the memory and is used to execute the above-mentioned method for determining the tire toe angle.

[0016] According to another aspect of an embodiment of the present application, a non-volatile storage medium is further provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the above-mentioned method for determining the tire toe angle by running the computer program.

[0017] According to another aspect of the embodiments of the present application, a computer program product is provided, including computer instructions, which implement the above-mentioned method for determining the tire toe angle when executed by a processor.

[0018] In an embodiment of the present application, by obtaining tire parameters of a target tire, the tire parameters include at least: the camber angle of the target tire, the radius of the target tire, and the rim radius of the target tire; determining a first footprint deflection angle corresponding to the camber angle based on the parameters of the target tire; determining a second footprint deflection angle corresponding to the toe angle of the target tire based on the first footprint deflection angle, the first footprint deflection angle and the second footprint deflection angle being equal in magnitude and opposite in direction; determining the toe angle of the target tire based on the second footprint deflection angle, thereby achieving the purpose of determining the toe angle that matches the camber angle only by using tire parameters, thereby realizing the technical effect of simplifying the method for determining the tire toe angle, and further solving the technical problem of the complexity of the method for obtaining the toe angle that matches the tire camber angle in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1is a hardware structure block diagram of a computer terminal for implementing a method for determining a tire toe angle according to an embodiment of the present application;

[0021] Figure 2 is a flow chart of a method for determining a tire toe angle according to an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of a target tire camber angle according to an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of a target tire according to an embodiment of the present application;

[0024] Figure 5 is a schematic diagram of a target tire rolling direction according to an embodiment of the present application;

[0025] Figure 6 is a rolling schematic diagram of a target tire having only a camber angle according to an embodiment of the present application;

[0026] Figure 7 is a rolling schematic diagram of a target tire with only a toe angle according to an embodiment of the present application;

[0027] Figure 8 This is a structural diagram of a device for determining a tire toe angle according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0029] It should 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 sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the related art, there are some methods for determining the tire toe angle, such as a method using an empirical formula and a method using the tire's cornering stiffness, but these methods either have low accuracy or are complex in calculation.

[0031] In order to solve the problems existing in the related art, the embodiment of the present application provides a method for determining the tire toe angle, which can be run on Figure 1 In the computer terminal shown, the computer terminal is explained below.

[0032] The tire toe angle determination method provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal, or a similar computing device. Figure 1 FIG1 shows a hardware structure block diagram of a computer terminal for implementing a method for determining a tire toe angle. Figure 1 As shown, the computer terminal 10 may include one or more (illustrated by 102a, 102b, ..., 102n in the figure) processors (the processor may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission module 106 for communication functions connected via a wired and / or wireless network. In addition, it may also include: a display, a keyboard, a cursor control device, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, and a BUS bus. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0033] It should be noted that the one or more processors and / or other data processing circuits described above may generally be referred to herein as "data processing circuitry." The data processing circuitry may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuitry may be a single, independent processing module, or may be incorporated in whole or in part into any of the other components of the computer terminal 10. As described in the embodiments of the present application, the data processing circuitry serves as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0034] The memory 104 can be used to store software programs and modules for application software, such as the program instructions / data storage device corresponding to the tire toe angle determination method in the embodiments of the present application. The processor executes the software programs and modules stored in the memory 104 to execute various functional applications and data processing, thereby implementing the tire toe angle determination method described above. The memory 104 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor, and such remote memory may be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0035] The transmission module 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by the communications provider of the computer terminal 10. In one embodiment, the transmission module 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission module 106 may be a radio frequency (RF) module, which is configured to communicate with the Internet wirelessly.

[0036] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer terminal 10 .

[0037] It should be noted that, in some optional embodiments, the above Figure 1 The computer terminal shown may include hardware elements (including circuits), software elements (including computer code stored on a computer-readable medium), or a combination of hardware elements and software elements. Figure 1 This is merely one example of a particular embodiment and is intended to illustrate the types of components that may be present in the computer terminal described above.

[0038] In the above operating environment, an embodiment of the present application provides an embodiment of a method for determining a tire toe angle. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0039] Figure 2 is a flow chart of a method for determining a tire toe angle according to an embodiment of the present application, such as Figure 2As shown, the method includes the following steps:

[0040] Step S202 , obtaining tire parameters of the target tire, where the tire parameters include at least: a camber angle of the target tire, a radius of the target tire, and a rim radius of the target tire.

[0041] Figure 3 A schematic diagram of a target tire camber angle is shown, as shown in FIG. Figure 3 As shown in the figure, α represents the camber angle of the target tire, b represents the width of the target tire footprint, c represents half of the width of the target tire footprint, θ0 represents half of the central angle corresponding to the footprint centerline, θ1 and θ2 represent half of the central angle corresponding to the long side of the deformed footprint and half of the central angle corresponding to the short side of the deformed footprint, respectively, θ represents any central angle of the target tire, a represents the radius of the target tire, β represents the first footprint deflection angle, and line segment AB represents the centerline of the target tire footprint.

[0042] It is understandable that Figure 3 The figure shows the camber angle of the tire when the tire only has the camber angle. Figure 3 The tire diagram is shown above. Figure 3 Below is a diagram of the tire tracks. Figure 3 The left side below is a schematic diagram of the tire footprint when there is no camber. Figure 3 The lower left side is a schematic diagram of the tire footprint when the tire only has a camber angle (first footprint schematic diagram).

[0043] Step S204: determining a first footprint deflection angle corresponding to the camber angle according to the parameters of the target tire.

[0044] by Figure 3 Taking the shape of the impression shown as an example, the tangent of the first impression angle tanβ=(aθ1-aθ2) / b.

[0045] tangent of camber angle

[0046] =a(θ1*θ1-θ2*θ2) / (2b)

[0047] =(aθ1-aθ2) / b*(θ1+θ2) / 2=tanβ*(θ1+θ2) / 2=tanβ*θ0.

[0048] Step S206: determining a second footprint deflection angle corresponding to the toe angle of the target tire according to the first footprint deflection angle, wherein the first footprint deflection angle and the second footprint deflection angle are equal in magnitude and opposite in direction.

[0049] Step S208: determining the toe angle of the target tire according to the second footprint deflection angle.

[0050] Through steps S202 to S208 described above, the purpose of determining the toe angle that matches the camber angle is achieved solely through tire parameters, thereby achieving the technical effect of simplifying the method for determining the tire toe angle, thereby resolving the technical problem of the complex method for obtaining the toe angle that matches the tire camber angle in the related art. Detailed description is given below.

[0051] In step S204 of the above-mentioned method for determining the tire toe angle, determining the first footprint deflection angle corresponding to the camber angle according to the parameters of the target tire includes: obtaining the sink rate of the target tire, the radius of the target tire, and the rim radius of the target tire from the tire parameters; determining a first target side according to the sink rate of the target tire, the radius of the target tire, and the rim radius of the target tire, wherein the first footprint is a footprint generated when the target tire has only the camber angle; determining the first footprint deflection angle according to the first target side, wherein the first target side is half of the long side of the first footprint, such as Figure 3 As shown, Figure 3 The long side of the trapezoid on the lower right is the long side of the first imprint.

[0052] Wherein, determining the first target edge according to the sink rate of the target tire, the radius of the target tire and the rim radius of the target tire includes: determining a target coefficient according to the sink rate of the target tire; determining the difference between the radius of the target tire and the rim radius of the target tire as a first difference; determining the second target edge according to the product of the first difference, the target coefficient and the rim radius of the target tire; determining the first target edge according to the radius of the target tire and the second target edge, wherein the second target edge is half of the center line of the first footprint.

[0053] Specifically, the length of the first target edge can be expressed as

[0054] Where r represents the rim radius of the target tire, and m represents the sinkage rate of the target tire.

[0055] like Figure 4 As shown, OM is the tire radius and OQ is the rim radius.

[0056] It will be appreciated that the target coefficient is 1-m.

[0057] Taking the target tire sinkage rate of 20% as an example, the length of the first target side is

[0058] In some embodiments of the present application, determining the first footprint angle based on the first target edge includes: determining the ratio of the first target edge to the radius of the target tire as a first ratio; and determining the first footprint angle based on the first ratio and the camber angle.

[0059] because so

[0060]

[0061] It can be understood that the first impression deflection angle can be determined by the above formula.

[0062] In the above-mentioned method for determining the tire toe angle, the toe angle of the target tire is determined based on the second footprint deflection angle, including: obtaining the vehicle wheelbase and target angle corresponding to the target tire, the target angle being half of the central angle corresponding to the center line of the first footprint; substituting the vehicle wheelbase, the second footprint deflection angle, the target angle and the radius of the target tire into a preset relationship to obtain the toe angle of the target tire, the preset relationship being used to express the relationship between the toe angle and the second footprint deflection angle.

[0063] Figure 5 A schematic diagram of tire rolling is shown, as shown in FIG. Figure 5 As shown, the vehicle Direction of travel, the target tire is and The angle is the toe angle γ. It can be understood that R1 is the radius of the tire rolling track formed by the camber angle, R2 is the radius of the tire rolling track formed by the toe angle, O1 and O2 are the center of the camber angle rolling track and the center of the toe angle rolling track respectively. is the central angle corresponding to O1, is the central angle corresponding to O2.

[0064] CE and DF are the lateral slip of the tire caused by the camber angle and toe angle respectively, where

[0065]

[0066]

[0067] From this we can see that

[0068]

[0069] When the camber angle and toe angle reach equilibrium, CE=DF, then:

[0070]

[0071] For the same tire, due to the consistency of rolling, AE=AF, from which we can know that AC=AD.

[0072] so

[0073] Since the camber angle and toe angle are both less than 1 degree, the length of AC is approximately equal to the length of arc AC, the length of AD is approximately equal to the length of arc AD, and the arc arc

[0074] therefore,

[0075] Figure 6 It shows that when rolling only with camber angle α,

[0076] Figure 7 It shows that when rolling with only the toe angle γ,

[0077] Joint

[0078] get

[0079] thus, The lateral slip of the tire is:

[0080]

[0081] When the tire has a toe angle, due to the existence of lateral force, the bottom of the tire will slide laterally, and the tire can be regarded as reverse roll. The sliding distance is DF, and its footprint shape also becomes trapezoidal. The camber angle can also be expressed as:

[0082]

[0083] The relationship between the toe angle and the second footprint angle (preset relationship) is as follows:

[0084]

[0085] Wherein, β2 represents the second footprint angle, α represents the camber angle, L represents the vehicle wheelbase, a represents the radius of the target tire, θ0 represents the target angle, and γ represents the toe angle.

[0086] It should be noted that after the toe angle of the target tire is determined based on the second footprint deflection angle, the toe angle is simulated and verified. If the verification is passed, indication information is output, which is used to indicate that the toe angle matches the camber angle.

[0087] Table 1 shows the calculated values ​​of the first footprint deflection angle β when the camber angle is 1 degree.

[0088] Table 1

[0089]

[0090] Table 2 shows the calculated values ​​of the toe angle and the second footprint deflection angle β2.

[0091] Table 2

[0092]

[0093] Figure 8 is a structural diagram of a device for determining a tire toe angle according to an embodiment of the present application, such as Figure 8 As shown, the device includes:

[0094] An acquisition module 80 is configured to acquire tire parameters of a target tire, wherein the tire parameters include at least: a camber angle of the target tire, a radius of the target tire, and a rim radius of the target tire;

[0095] A first determining module 82 is configured to determine a first footprint deflection angle corresponding to the camber angle according to parameters of the target tire;

[0096] A second determining module 84 is configured to determine a second footprint deflection angle corresponding to the toe angle of the target tire based on the first footprint deflection angle, wherein the first footprint deflection angle and the second footprint deflection angle are equal in magnitude and opposite in direction;

[0097] The third determining module 86 is configured to determine the toe angle of the target tire according to the second footprint deflection angle.

[0098] The above-mentioned device for determining the tire toe angle achieves the purpose of determining the toe angle that matches the camber angle only by using tire parameters, thereby achieving the technical effect of simplifying the method for determining the tire toe angle, and further solving the technical problem of the complexity of the method for obtaining the toe angle that matches the tire camber angle in the related art.

[0099] In the above-mentioned tire toe angle determination device, the first determination module 82 includes: a determination submodule, which is used to determine the first footprint deflection angle corresponding to the camber angle according to the parameters of the target tire, including: obtaining the sink rate of the target tire, the radius of the target tire and the rim radius of the target tire from the tire parameters; determining the first target side according to the sink rate of the target tire, the radius of the target tire and the rim radius of the target tire, the first footprint being the footprint generated when the target tire has only the camber angle; determining the first footprint deflection angle according to the first target side, wherein the first target side is half of the long side of the first footprint.

[0100] A determination submodule includes: a first determination unit and a second determination unit, the first determination unit is used to determine a first target edge according to the sinking rate of the target tire, the radius of the target tire and the rim radius of the target tire, including: determining a target coefficient according to the sinking rate of the target tire; determining the difference between the radius of the target tire and the rim radius of the target tire as a first difference; determining a second target edge according to the product of the first difference, the target coefficient and the rim radius of the target tire; determining the first target edge according to the radius of the target tire and the second target edge, wherein the second target edge is half of the center line of the first footprint.

[0101] The second determination unit is used to determine the first footprint deflection angle according to the first target edge, including: determining the ratio of the first target edge to the radius of the target tire as a first ratio; and determining the first footprint deflection angle according to the first ratio and the camber angle.

[0102] The second determination unit includes: a determination subunit, which is used to determine the toe angle of the target tire according to the second footprint deflection angle, including: obtaining the vehicle wheelbase and target angle corresponding to the target tire, where the target angle is half of the central angle corresponding to the center line of the first footprint; substituting the vehicle wheelbase, the second footprint deflection angle, the target angle and the radius of the target tire into a preset relationship formula to obtain the toe angle of the target tire, where the preset relationship formula is used to express the relationship between the toe angle and the second footprint deflection angle.

[0103] The third determination module 86 is further configured to perform simulation verification on the toe angle after determining the toe angle of the target tire according to the second footprint deflection angle, and output indication information if the verification is passed, the indication information being used to indicate that the toe angle matches the camber angle.

[0104] It should be noted that Figure 8 The tire toe angle determination device shown is used to perform Figure 2 The method for determining the tire toe angle is shown in FIG. 4 , so the relevant explanations in the above method for determining the tire toe angle are also applicable to the device for determining the tire toe angle, and will not be repeated here.

[0105] An embodiment of the present application further provides a computer device comprising: a memory and a processor, wherein the memory is used to store program instructions; and the processor is connected to the memory and is used to execute the above-mentioned method for determining the tire toe angle.

[0106] An embodiment of the present application further provides a non-volatile storage medium, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the above-mentioned method for determining the tire toe angle by running the computer program.

[0107] An embodiment of the present application further provides a computer program product, comprising a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining the tire toe angle in the present application are implemented.

[0108] An embodiment of the present application further provides a computer program product, comprising computer instructions, which, when executed by a processor, implement the steps of the method for determining the tire toe angle in the present application.

[0109] An embodiment of the present application further provides a computer program, which, when executed by a processor, implements the steps of the method for determining the tire toe angle in the present application.

[0110] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0111] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0112] 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 exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as 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.

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

[0114] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0115] 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 is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0116] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining a tire toe angle, characterized in that: include: Acquire tire parameters of a target tire, wherein the tire parameters include at least: a camber angle of the target tire, a radius of the target tire, and a rim radius of the target tire; Determining a first footprint deflection angle corresponding to the camber angle according to parameters of the target tire; Determining a second footprint deflection angle corresponding to the toe angle of the target tire according to the first footprint deflection angle, wherein the first footprint deflection angle and the second footprint deflection angle are equal in magnitude and opposite in direction; The toe angle of the target tire is determined according to the second footprint deflection angle.

2. The method according to claim 1, characterized in that Determining a first footprint deflection angle corresponding to the camber angle according to parameters of the target tire includes: Acquire the sink rate of the target tire, the radius of the target tire, and the rim radius of the target tire from the tire parameters; determining a first target edge according to the sinkage rate of the target tire, the radius of the target tire, and the rim radius of the target tire, wherein the first imprint is an imprint generated when the target tire has only a camber angle; The first print deflection angle is determined according to the first target side, wherein the first target side is half of the long side of the first print.

3. The method according to claim 2, characterized in that Determining a first target edge according to the sinkage rate of the target tire, the radius of the target tire, and the rim radius of the target tire includes: determining a target coefficient according to the sinking rate of the target tire; determining a difference between a radius of the target tire and a rim radius of the target tire as a first difference; determining a second target edge according to the product of the first difference, the target coefficient, and the rim radius of the target tire; The first target edge is determined according to the radius of the target tire and the second target edge, wherein the second target edge is half of the center line of the first footprint.

4. The method according to claim 2, characterized in that Determining the first impression deflection angle according to the first target edge includes: determining a ratio of the first target side to the radius of the target tire as a first ratio; The first footprint angle is determined according to the first ratio and the camber angle.

5. The method according to claim 4, characterized in that Determining the toe angle of the target tire according to the second footprint deflection angle includes: Obtaining a vehicle wheelbase and a target angle corresponding to the target tire, where the target angle is half of a central angle corresponding to a centerline of the first footprint; The vehicle wheelbase, the second footprint angle, the target angle, and the radius of the target tire are substituted into a preset relationship to obtain the toe angle of the target tire. The preset relationship is used to express the relationship between the toe angle and the second footprint angle.

6. The method according to claim 5, characterized in that The preset relationship is shown below: Wherein, β2 represents the second footprint angle, α represents the camber angle, L represents the vehicle wheelbase, a represents the radius of the target tire, θ0 represents the target angle, and γ represents the toe angle.

7. The method according to claim 1, characterized in that After determining the toe angle of the target tire according to the second footprint deflection angle, the method further includes: A simulation verification is performed on the toe angle, and if the verification is passed, indication information is output, where the indication information is used to indicate that the toe angle matches the camber angle.

8. A device for determining a tire toe angle, characterized in that: include: An acquisition module, configured to acquire tire parameters of a target tire, wherein the tire parameters include at least: a camber angle of the target tire, a radius of the target tire, and a rim radius of the target tire; A first determining module is configured to determine a first footprint deflection angle corresponding to the camber angle according to parameters of the target tire; a second determining module, configured to determine a second footprint deflection angle corresponding to the toe angle of the target tire according to the first footprint deflection angle, wherein the first footprint deflection angle and the second footprint deflection angle are equal in magnitude and opposite in direction; The third determining module is configured to determine the toe angle of the target tire according to the second footprint deflection angle.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory is used to store program instructions; the processor is connected to the memory and is used to execute the tire toe angle determination method according to any one of claims 1 to 7.

10. A computer program product comprising computer instructions, characterized in that When the computer instructions are executed by a processor, the method for determining the tire toe angle according to any one of claims 1 to 7 is implemented.

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