Method and device for reducing tire wear

Abstract

The present invention provides a method and device for reducing tire wear, belonging to the technical field of tire performance control. The method for reducing tire wear of the present invention can effectively manage the contact force between the tire and the target tire by accurately analyzing the wear state of the tire under different torque outputs and adjusting the torque output to obtain a target torque output curve, thereby reducing the wear of the target tire and significantly improving the service life of the tire.

Description

Technical Field

[0001] The present invention relates to the technical field of tire performance control, and in particular to a method and device for reducing tire wear. Background Art

[0002] Electric vehicles are gradually becoming an important part of modern transportation, especially as environmental protection and sustainable development are increasingly valued. However, the design and performance characteristics of electric vehicles are significantly different from those of traditional fuel vehicles, and these differences also affect the requirements and performance of tires during use.

[0003] First, a notable feature of electric vehicles is the weight of their battery packs. Batteries are the core components of electric vehicle power systems and are usually composed of multiple battery cells with a large overall mass. Compared with fuel vehicles of the same level, electric vehicles tend to be heavier overall due to the presence of batteries. This extra weight significantly increases the pressure on the tires of electric vehicles when they are driving. When tires are under greater pressure, they deform more and the area in contact with the ground increases accordingly. Although this situation can improve the grip of the tires, it also accelerates the wear process of the tires.

[0004] In addition to weight, the dynamic characteristics of electric vehicles are also very different from those of traditional fuel vehicles. Electric vehicles generally have higher torque output, and this torque can reach its maximum value almost instantly when the vehicle is started. This means that electric vehicles can achieve very rapid acceleration performance when starting and accelerating. Although this powerful acceleration capability brings an excellent driving experience, it also places higher requirements on the performance of tires. Tires must have stronger grip to ensure that the vehicle can accelerate smoothly without slipping under the action of high torque. However, the strong grip requirement will lead to increased friction between the tire and the road, which will further increase tire wear.

[0005] In order to improve the energy efficiency and range of electric vehicles, manufacturers often adopt a low rolling resistance strategy in tire design. Rolling resistance refers to the resistance generated by the part of the tire in contact with the ground when the vehicle is driving. Low rolling resistance tires can reduce energy loss under the same driving conditions, thereby improving the range of electric vehicles. However, low rolling resistance design often means sacrificing certain wear resistance. In order to achieve low rolling resistance, the material and structure of the tire may be optimized, which performs well in reducing energy loss when the tire is in contact with the ground, but may be insufficient in wear resistance.

[0006] The accelerated wear of electric vehicle tires is actually the result of multiple factors. First, the larger vehicle weight and higher tire pressure together lead to faster wear. Secondly, the powerful torque output and rapid acceleration performance make the tires face greater friction during driving, which directly affects the service life of the tires. In addition, the design of low rolling resistance tires may have compromised in materials and structure, reducing the wear resistance of the tires. Therefore, when electric vehicles are frequently accelerated and decelerated in daily driving, especially in urban road conditions, the degree of tire wear will be aggravated.

[0007] To meet these challenges, electric vehicle tire design is gradually moving towards higher technical standards. Manufacturers are researching new materials and technologies to improve tire grip and wear resistance while maintaining the advantages of low rolling resistance. However, how to further reduce tire wear without changing the existing tire materials and without affecting the normal use of the vehicle is an urgent problem to be solved. Summary of the invention

[0008] The present invention provides a method and device for reducing tire wear, which are used to solve the defect that electric vehicle tires are easy to wear in the prior art and achieve the effect of reducing wheel wear.

[0009] The present invention provides a method for reducing tire wear, comprising:

[0010] Determining a wear parameter for outputting torque to a target tire according to an initial torque output curve; the initial torque output curve is a calibrated torque output curve of a target vehicle in a target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire;

[0011] Correcting the initial torque output curve based on the wear parameter to obtain an updated target torque output curve;

[0012] The target vehicle is controlled to output torque to the target tire based on the target torque output curve in the target scenario.

[0013] According to a method for reducing tire wear provided by the present invention, the wear parameter includes the friction work of the target tire, and the wear parameter for determining the output torque to the target tire according to the initial torque output curve includes:

[0014] Determining a design size of the target tire and a torque output to the target tire according to the initial torque output curve;

[0015] Through finite element simulation analysis, based on the design size of the target tire and the torque output to the target tire, the friction work of the target tire is determined when the adhesion rate of the target tire is greater than the ground adhesion coefficient.

[0016] According to a method for reducing tire wear provided by the present invention, the adhesion rate of the target tire is determined by the following method:

[0017] Determine the longitudinal force on the target tire based on the design size of the target tire and the torque output to the target tire; determine the maximum longitudinal force that the target tire can generate without slipping based on the mass of the target vehicle;

[0018] The ratio of the longitudinal force applied to the target tire to the maximum longitudinal force that can be generated by the target tire without slipping is determined as the adhesion rate of the target tire.

[0019] According to a method for reducing tire wear provided by the present invention, the wear parameter also includes a wear index of the target tire, and the wear index of the target tire is obtained by integrating the friction work of the target tire based on the torque output to the target tire; the wear index of the target tire is negatively correlated with the wear resistance of the target tire.

[0020] According to a method for reducing tire wear provided by the present invention, the initial torque output curve is corrected based on the wear parameter to obtain an updated target torque output curve, including:

[0021] determining a speed change pattern of the target vehicle based on the initial torque output curve;

[0022] Determining each speed change interval of the target vehicle within a target time period in the initial torque output curve based on a speed change pattern of the target vehicle;

[0023] Based on the wear parameter, the torque change speed corresponding to each speed change interval is adjusted to reduce the wear degree of the target tire within the target time period, and an updated target torque output curve is obtained.

[0024] According to a method for reducing tire wear provided by the present invention, when the speed change mode of the target vehicle is the acceleration mode, adjusting the torque change speed corresponding to each speed change interval based on the wear parameter to reduce the wear degree of the target tire within the target time period, and obtaining an updated target torque output curve, includes:

[0025] In a first speed range, the output torque based on the initial torque output curve reduces the torque growth rate, in a second speed range, the output torque based on the initial torque output curve increases the torque growth rate, and in a third speed range, the output torque based on the initial torque output curve maintains the torque growth rate;

[0026] The first speed change interval corresponds to an initial stage of acceleration of the target vehicle, the second speed change interval corresponds to an intermediate stage of acceleration of the target vehicle, and the third speed change interval corresponds to a final stage of acceleration of the target vehicle.

[0027] The present invention also provides a device for reducing tire wear, comprising:

[0028] A determination module, used to determine a wear parameter for outputting torque to a target tire according to an initial torque output curve; the initial torque output curve is a calibrated torque output curve of a target vehicle in a target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire;

[0029] A first processing module, configured to modify the initial torque output curve based on the wear parameter to obtain an updated target torque output curve;

[0030] The second processing module is used to control the output torque of the target vehicle to the target tire based on the target torque output curve in the target scenario.

[0031] The present invention also provides a vehicle, comprising: a vehicle body, an intelligent control module, a power device for outputting torque, and a target tire for driving the vehicle to move;

[0032] The intelligent control module is used to control the power device to output torque to the target tire according to a target torque output curve according to any of the above methods for reducing tire wear.

[0033] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the above methods for reducing tire wear is implemented.

[0034] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for reducing tire wear as described in any one of the above is implemented.

[0035] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for reducing tire wear as described in any one of the above is implemented.

[0036] The method and device for reducing tire wear provided by the present invention obtain a target torque output curve by accurately analyzing the wear state of the tire under different torque outputs and adjusting the torque output of the vehicle, so that the vehicle can effectively manage the contact force between the vehicle and the tire, thereby reducing the wear of the target tire and significantly improving the service life of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 This is one of the flow charts of the method for reducing tire wear provided by the present invention;

[0039] Figure 2 This is the second flow chart of the method for reducing tire wear provided by the present invention;

[0040] Figure 3 is a curve diagram of torque variation over time provided by the present invention;

[0041] Figure 4 It is a structural schematic diagram of a device for reducing tire wear provided by the present invention;

[0042] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Combine the following Figure 1-Figure 5 The method and device for reducing tire wear of the present invention are described.

[0045] The method for reducing tire wear according to the embodiment of the present invention mainly includes step 110 , step 120 and step 130 .

[0046] Step 110 , determining the wear parameter for outputting torque to the target tire according to the initial torque output curve.

[0047] The initial torque output curve is a calibrated torque output curve of the target vehicle in the target scenario.

[0048] The initial torque output curve may be a standard curve of vehicle torque output obtained through testing and calibration in a specific environment such as urban roads, highways, bad weather, etc. It indicates the amount of torque that the vehicle should output under different speeds and acceleration requirements.

[0049] Wear parameters are parameters associated with the wear resistance of the target tire. Wear parameters refer to indicators that are directly related to the wear resistance of the target tire. These parameters may include the characteristics of the tire material, design, usage conditions such as mileage and wear uniformity, etc. By analyzing these parameters, the wear degree of the tire can be evaluated, thereby optimizing the torque output to extend the tire life and improve driving safety.

[0050] Step 120 , correcting the initial torque output curve based on the wear parameter to obtain an updated target torque output curve.

[0051] The wear parameters can be taken into account to analyze the impact of different torque outputs on the wear parameters of the target tire. For example, continuous high torque output may accelerate wear, while torque output according to a certain pattern can reduce the overall wear to a certain extent.

[0052] Specifically, to analyze the effect of the initial torque output curve on tire friction, we can first collect the specific data of the torque output, i.e., the initial torque output curve, and combine it with the friction characteristics of the tire. By establishing a friction model and using the Coulomb friction formula, we can mathematically describe the relationship between torque and friction to form a comprehensive analysis model.

[0053] On this basis, computer simulation tools can be used to dynamically simulate different torque output scenarios, observe how friction changes in each acceleration stage, and then analyze the actual impact of torque changes on tires.

[0054] At the same time, the accuracy of the model can be verified through real vehicle testing, and relevant parameters can be adjusted to ensure that the simulation results are consistent with the actual situation. Finally, the torque output curve is optimized based on the test data, and the performance of the tire is monitored in real time to achieve effective control of friction and wear. This comprehensive analysis method can deeply understand the impact of torque output on tire performance, thereby providing a scientific basis for vehicle acceleration control.

[0055] In some cases, a phased torque output can be implemented. During acceleration, the torque can be increased in stages to avoid applying excessive torque instantly, which can reduce the peak friction between the tire and the ground.

[0056] Through these methods, tire wear can be effectively reduced and the service life of tires can be extended.

[0057] Step 130 : controlling the output torque of the target vehicle to the target tire based on the target torque output curve in the target scenario.

[0058] In the target scenario, controlling the vehicle's output torque to the tire according to the target torque output curve can be achieved through the following steps.

[0059] First, a vehicle dynamics model is built, taking into account tire characteristics, road conditions and vehicle parameters to ensure that the vehicle's behavior under different acceleration and driving conditions is accurately reflected. Next, the required torque output is defined using the target torque output curve, which usually involves detailed planning of torque requirements at different speeds and acceleration phases.

[0060] Then, an intelligent control module such as an electronic control unit (ECU) is used to monitor the vehicle's speed, acceleration, and tire status in real time. The ECU can collect this data through sensors and compare it with the preset target torque output curve to determine whether the current torque meets the target value. On this basis, the ECU can dynamically adjust the engine's output power or the motor's driving torque to ensure that the torque output is smooth and meets the curve requirements.

[0061] In addition, it is crucial to implement a closed-loop control strategy. Through the feedback mechanism, the output torque is adjusted in real time to respond to changes in road conditions and driving behavior. For example, if tire slip is detected, the ECU can immediately reduce the torque output to avoid instantaneous excessive force, thereby protecting the tire and improving safety.

[0062] Finally, the torque control strategy is continuously optimized through software updates and data analysis to adjust the target torque output curve, accumulate driving data, improve the accuracy and response speed of the model, and achieve smarter torque management. This method can not only effectively control the output torque to the tire, but also improve the overall performance and safety of the vehicle.

[0063] In this case, suitable driving modes can be selected according to the driving environment. These modes can optimize the torque output according to the target torque output curve and operate according to the target torque output curve to reduce wear.

[0064] In target scenarios such as starting, accelerating, decelerating and braking, the vehicle's output torque to the tires can be controlled based on the target torque output curve.

[0065] During the starting phase, the vehicle needs to gradually apply torque to avoid tire slippage. By monitoring the friction between the tire and the ground and the current speed, the electronic control unit can slowly increase the torque output according to the preset torque output curve so that the tire can gradually gain grip. During this process, the ECU will adjust the torque in real time to ensure that it matches the target curve and avoid applying too high torque instantly.

[0066] During the acceleration phase, the vehicle requires higher torque to increase speed. According to the target torque output curve, the ECU will dynamically adjust the torque output according to the current vehicle speed and acceleration to ensure a smooth acceleration process. At this time, the torque distribution can be optimized based on real-time feedback information, such as increasing the torque when the road conditions are good, and reducing the output on slippery or uneven roads to prevent slipping or loss of control.

[0067] When decelerating, the ECU needs to gradually reduce the torque according to the target torque output curve to smoothly reduce the speed. This process can be achieved by reducing the throttle or reducing the power of the motor. At the same time, the braking status can be monitored to ensure that the deceleration process does not cause excessive wear on the tires.

[0068] During the braking phase, the ECU needs to quickly and accurately control the torque to ensure that the vehicle stops safely. In emergency braking situations, safety can be prioritized, and the torque output can be quickly reduced while the braking system is activated. For normal braking, the ECU can smoothly adjust the torque according to the target torque output curve to avoid excessive impact on the tires.

[0069] In this embodiment, by real-time monitoring and dynamic adjustment of torque output in various driving scenarios, the vehicle can better adapt to different driving needs, ensure smooth starting, acceleration, deceleration and braking, and thus improve safety and driving experience.

[0070] According to the method for reducing tire wear provided by an embodiment of the present invention, a target torque output curve is obtained by accurately analyzing the wear state of the tire under different torque outputs and adjusting the torque output of the vehicle, so that the vehicle can effectively manage the contact force between the vehicle and the tire, thereby reducing the wear of the target tire and significantly improving the service life of the tire.

[0071] In some embodiments, Figure 2 As shown, the initial torque output curve is corrected based on the wear parameter to obtain an updated target torque output curve, including step 210, step 220 and step 230.

[0072] Step 210, determining a speed change pattern of the target vehicle based on the initial torque output curve;

[0073] Step 220, determining each speed change interval of the target vehicle within a target time period in the initial torque output curve based on the speed change pattern of the target vehicle;

[0074] Step 230 , based on the wear parameter, adjusting the torque change speed corresponding to each speed change interval to reduce the wear degree of the target tire within the target time period, and obtaining an updated target torque output curve.

[0075] It can be understood that the speed change of the vehicle in different driving scenarios, including different stages such as starting, acceleration, constant speed driving, deceleration and braking, can be analyzed based on the initial torque output curve.

[0076] By monitoring the vehicle’s acceleration and speed data, trends in speed changes can be plotted to help understand the vehicle’s dynamic behavior under different conditions.

[0077] After the speed change pattern is identified, each speed change interval is determined according to the pattern. The speed change interval refers to the different stages of vehicle speed change within a specific time, such as the acceleration stage, the constant speed stage and the deceleration stage, or the initial stage of acceleration or deceleration, the middle stage of acceleration and the final stage of acceleration.

[0078] Each interval can be defined based on the vehicle's driving conditions, target time period, and rate of speed change, helping to identify torque requirements under different driving behaviors.

[0079] Based on the wear parameters, that is, the impact on tire wear, the torque change speed corresponding to each speed range is adjusted.

[0080] By optimizing the torque change in each speed range, the impact caused by sudden acceleration or braking can be reduced to reduce tire wear. In other words, the torque can be gradually increased during acceleration and smoothly reduced during deceleration, thus forming an updated target torque output curve.

[0081] In this embodiment, by analyzing the speed change and wear effect of the vehicle, the torque output is dynamically adjusted to optimize the tire service life. Through these steps, the vehicle can run more smoothly under different driving conditions, while effectively reducing tire wear and improving driving safety and economy.

[0082] In some embodiments, when the speed change mode of the target vehicle is an acceleration mode, based on the wear parameter, the torque change speed corresponding to each speed range is adjusted to reduce the degree of wear of the target tire within the target time period, and an updated target torque output curve is obtained, including: in the first speed range, the output torque based on the initial torque output curve reduces the torque growth rate, in the second speed range, the output torque based on the initial torque output curve increases the torque growth rate, and in the third speed range, the output torque based on the initial torque output curve maintains the torque growth rate; wherein, the first speed range corresponds to the initial stage of acceleration of the target vehicle, the second speed range corresponds to the middle stage of acceleration of the target vehicle, and the third speed range corresponds to the final stage of acceleration of the target vehicle.

[0083] This process describes how torque output is adjusted as the vehicle accelerates to reduce tire wear.

[0084] The entire acceleration process is divided into three speed ranges, representing different acceleration stages, namely the initial, middle and final stages.

[0085] In the first speed range, the vehicle is just beginning to accelerate. In order to reduce tire slip and wear, the output torque growth rate is reduced, which means that the torque growth is relatively gentle, allowing the tires to gradually adapt to the ground.

[0086] In the second speed range, after the vehicle reaches a certain speed, it enters the intermediate stage of acceleration. At this time, the increase in output torque is increased, which can provide more power to increase the speed while still monitoring the wear.

[0087] In the final stage of acceleration in the third speed range, maintaining the torque growth rate means maintaining a certain torque output instead of increasing it, which helps to reach the target speed smoothly and avoid excessive pressure on the tires caused by the sudden acceleration in the final stage.

[0088] It can be understood that through this adjustment method, it is possible to balance performance and tire wear in different acceleration stages, and ultimately form an updated target torque output curve to optimize the vehicle's acceleration performance and tire service life.

[0089] In some embodiments, the wear parameter includes friction work of the target tire, and determining the wear parameter for outputting torque to the target tire according to the initial torque output curve includes the following process.

[0090] The design size of the target tire and the torque output to the target tire according to the initial torque output curve can be determined.

[0091] Furthermore, through finite element simulation analysis, based on the design size of the target tire and the torque output to the target tire, the friction work of the target tire is determined when the adhesion rate of the target tire is greater than the ground adhesion coefficient.

[0092] Wear parameters include the friction work of the target tire. Friction work refers to the work done by the tire when it contacts the ground, which is directly related to the degree of tire wear.

[0093] First, the design dimensions of the target tire (such as diameter, width, tread design, etc.) need to be determined. These parameters affect the performance of the tire and its contact with the ground.

[0094] Secondly, based on the initial torque output curve, the torque output to the target tire under different driving conditions is calculated. These torque values ​​are used for subsequent friction work calculations.

[0095] Finite element analysis is used to simulate the behavior of the target tire in a computer model. This method is able to take into account complex physical phenomena such as the elasticity and plasticity of the material and its interaction with the ground.

[0096] During the simulation process, it is necessary to analyze the performance of the tire during acceleration and driving based on the tire's design dimensions and the applied torque.

[0097] In friction analysis, considering the tire adhesion rate and the friction force of the ground can effectively calculate the friction work of the target tire, reflecting the actual wear and tear of the tire under working conditions.

[0098] The adhesion rate of the target tire is determined in the following manner: the longitudinal force on the target tire is determined based on the design size of the target tire and the torque output to the target tire; the maximum longitudinal force that the target tire can generate without slipping is determined based on the mass of the target vehicle; and the ratio of the longitudinal force on the target tire to the maximum longitudinal force that the target tire can generate without slipping is determined as the adhesion rate of the target tire.

[0099] Based on the design size of the target tire and the applied torque, the longitudinal force on the tire in the working state is calculated. The longitudinal force refers to the force of the tire related to the acceleration or deceleration of the vehicle during driving.

[0100] Taking into account the mass of the target vehicle, calculate the maximum longitudinal force that the target tire can generate without slipping. This maximum longitudinal force is determined by the friction between the tire and the ground, which is usually related to the tire's adhesion performance, road conditions and vehicle weight.

[0101] The actual longitudinal force on the target tire is compared with the maximum longitudinal force it can generate without slipping, and the ratio between the two is calculated. This ratio is the adhesion index, which reflects the tire's grip and traction under current conditions.

[0102] The adhesion coefficient φ is a constant related to the road surface characteristics, which represents the ratio of the maximum friction between the tire and the ground. x F is the longitudinal force on the tire, which affects acceleration and deceleration. Z The vertical load on the tire, usually related to the weight of the vehicle.

[0103] It can be understood that the maximum longitudinal force F that the target tire can generate without slipping is xmax It can be expressed as:

[0104] F xmax = F Z * φ;

[0105] When F x / F xmax >φ, the tire adhesion rate exceeds the ground friction capacity, causing the tire to slip and wear.

[0106] It can be appreciated that the basic equation of motion for a vehicle can be expressed as:

[0107] F x = T / R;

[0108] Wherein, T is the torque of the target tire, and R is the rolling radius of the target tire. The longitudinal force on the tire can be calculated by the relationship between the output torque and rolling radius of the vehicle.

[0109] On this basis, the momentum formula mv = F x ·t is used to represent the relationship between the momentum change and time under the action of force, which is convenient for analyzing the acceleration process of the vehicle, where m is the mass of the target vehicle, v is the speed of the target vehicle, and t is the time

[0110] Furthermore, the function of friction work and torque can be established through finite element simulation analysis:

[0111] W f =A·T 2 +B·T+b;

[0112] Where b is the running surface width of the target tire, and A and B are constants.

[0113] Specifically, the tire material properties and performance parameters, including material constitutive characteristics, mechanical boundary conditions, tire structural parameters, cord expansion coefficient, etc., can be input into the simulation software to establish a 2D finite element analysis model of a single tire section, and then a 3D tire solid model with a longitudinal pattern can be further obtained. The tire material properties and mechanical characteristics information of each component can be extracted in Abaqus, and the tire inflation, loading, and rolling analysis can be performed given the working conditions such as air pressure, load, and speed. The tire is divided into several sections using wear post-processing software, of which n sections are in contact with the ground, so the friction work values ​​of n sections need to be fitted into one section; that is, the friction work of each node of the tire section is the total friction work of n sections. The wear post-processing method is used to iteratively calculate the contact friction behavior using the updated wear profile; after multiple iterations, the friction work distribution of the tire tread passing each time is calculated; and finally the tire friction work model is obtained. For different torque input conditions, the friction work under different torque inputs can be obtained respectively.

[0114] In some embodiments, the wear parameter further includes a wear index of the target tire, which is obtained by integrating the friction work of the target tire based on the torque output to the target tire. The wear index of the target tire is negatively correlated with the wear resistance of the target tire.

[0115] The wear index ξ of the target tire can be determined by the following formula:

[0116] ;

[0117] Wherein, T is the torque output to the target tire, C is a constant, and t is time.

[0118] like Figure 3 As shown, Figure 3A curve graph showing the change of torque over time is shown. The horizontal axis in the figure represents time in seconds, and the vertical axis represents torque in Nm. The dotted straight line fitted in the figure can be regarded as a schematic diagram of the initial torque output curve of a vehicle of a certain mass in the prior art, and the dotted curve fitted in the figure is the target torque output curve obtained by a vehicle of a certain mass according to an embodiment of the present invention.

[0119] like Figure 3 As shown in the figure, in the time range of 0s -2000s and after 3625s, the friction work (integrated area) of the tire corresponding to the uniform increase of torque (straight line) is greater than the friction work of the tire corresponding to the non-uniform increase of torque (curve); in the time range of 2000s-3625s, the friction work of the tire when the torque increases at a uniform speed is less than the friction work of the tire corresponding to the non-uniform increase of torque. However, the total friction work corresponding to the curve is less than the total friction work corresponding to the straight line.

[0120] Therefore, in the initial acceleration period, i.e. the first speed range, it is recommended that the torque growth rate is relatively small, and in the middle of the acceleration period, i.e. the second speed range, the torque growth rate is appropriately increased. When accelerating to a certain stage, i.e. the third speed range, the torque growth rate remains unchanged, thereby balancing the torque and wear performance, ensuring good wear performance while meeting the acceleration conditions of electric vehicles.

[0121] Through the above steps, the adhesion of the target tire under specific driving conditions can be effectively evaluated. The quantification of this adhesion is crucial to optimizing the dynamic performance of the vehicle, controlling wear and improving driving safety. Understanding this process helps to design better tires and driving strategies to ensure the performance of the vehicle under various road conditions.

[0122] In this embodiment, the friction work generated by the target tire during acceleration and driving is evaluated by determining the tire design size, calculating the torque output, and performing finite element simulation analysis. This evaluation is to better understand the tire wear so that effective measures can be taken in the subsequent torque output adjustment to reduce wear and increase the tire service life.

[0123] The device for reducing tire wear provided by the present invention is described below. The device for reducing tire wear described below and the method for reducing tire wear described above can be referred to each other.

[0124] like Figure 4 As shown, the device for reducing tire wear according to the embodiment of the present invention mainly includes a determination module 410 , a first processing module 420 and a second processing module 430 .

[0125] The determination module 410 is used to determine the wear parameter of outputting torque to the target tire according to the initial torque output curve; the initial torque output curve is a calibrated torque output curve of the target vehicle in the target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire;

[0126] The first processing module 420 is used to correct the initial torque output curve based on the wear parameter to obtain an updated target torque output curve;

[0127] The second processing module 430 is used to control the output torque of the target vehicle to the target tire based on the target torque output curve in the target scenario.

[0128] The device for reducing tire wear provided in an embodiment of the present invention obtains a target torque output curve by accurately analyzing the wear state of the tire under different torque outputs and adjusting the torque output of the vehicle, so that the vehicle can effectively manage the contact force between the vehicle and the tire, thereby reducing the wear of the target tire and significantly improving the service life of the tire.

[0129] An embodiment of the present invention further provides a vehicle, comprising: a vehicle body, an intelligent control module, a power device for outputting torque, and a target tire for driving the vehicle to move;

[0130] The intelligent control module is used to control the power device to output torque to the target tire according to the target torque output curve according to the method for reducing tire wear as described above.

[0131] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 510, a communications interface 520, a memory 530 and a communications bus 540, wherein the processor 510, the communications interface 520 and the memory 530 communicate with each other through the communications bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the method for reducing tire wear, which includes: determining the wear parameter for outputting torque to the target tire according to the initial torque output curve; the initial torque output curve is the calibrated torque output curve of the target vehicle in the target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire; the initial torque output curve is corrected based on the wear parameter to obtain an updated target torque output curve; and the output torque of the target vehicle to the target tire is controlled based on the target torque output curve in the target scenario.

[0132] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the 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 to enable 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 invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0133] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the method for reducing tire wear provided by the above-mentioned methods, which includes: determining the wear parameters for outputting torque to the target tire according to the initial torque output curve; the initial torque output curve is a calibrated torque output curve of the target vehicle in a target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire; based on the wear parameter, the initial torque output curve is corrected to obtain an updated target torque output curve; and based on the target torque output curve, the output torque of the target vehicle to the target tire is controlled in the target scenario.

[0134] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the method for reducing tire wear provided by the above-mentioned methods, the method comprising: determining the wear parameters for outputting torque to the target tire according to the initial torque output curve; the initial torque output curve is a calibrated torque output curve of the target vehicle under a target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire; the initial torque output curve is corrected based on the wear parameter to obtain an updated target torque output curve; and the output torque of the target vehicle to the target tire is controlled based on the target torque output curve under the target scenario.

[0135] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0136] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for reducing tire wear, characterized in that: include: Determining a wear parameter for outputting torque to a target tire according to an initial torque output curve; the initial torque output curve is a calibrated torque output curve of a target vehicle in a target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire; Correcting the initial torque output curve based on the wear parameter to obtain an updated target torque output curve; controlling the output torque of the target vehicle to the target tire based on the target torque output curve in the target scenario; The wear parameter includes the friction work of the target tire, and the wear parameter for outputting torque to the target tire according to the initial torque output curve includes: Determining a design size of the target tire and a torque output to the target tire according to the initial torque output curve; Through finite element simulation analysis, based on the design size of the target tire and the torque output to the target tire, the friction work of the target tire is determined when the adhesion rate of the target tire is greater than the ground adhesion coefficient.

2. The method for reducing tire wear according to claim 1, characterized in that: The adhesion rate of the target tire is determined by: Determine the longitudinal force on the target tire based on the design size of the target tire and the torque output to the target tire; determine the maximum longitudinal force that the target tire can generate without slipping based on the mass of the target vehicle; The ratio of the longitudinal force applied to the target tire to the maximum longitudinal force that can be generated by the target tire without slipping is determined as the adhesion rate of the target tire.

3. The method for reducing tire wear according to claim 1, characterized in that: The wear parameter also includes a wear index of the target tire, which is obtained by integrating the friction work of the target tire based on the torque output to the target tire; the wear index of the target tire is negatively correlated with the wear resistance of the target tire.

4. The method for reducing tire wear according to claim 1, characterized in that: The step of correcting the initial torque output curve based on the wear parameter to obtain an updated target torque output curve includes: determining a speed change pattern of the target vehicle based on the initial torque output curve; Determining each speed change interval of the target vehicle within a target time period in the initial torque output curve based on a speed change pattern of the target vehicle; Based on the wear parameter, the torque change speed corresponding to each speed change interval is adjusted to reduce the wear degree of the target tire within the target time period, and an updated target torque output curve is obtained.

5. The method for reducing tire wear according to claim 4, characterized in that: When the speed change mode of the target vehicle is the acceleration mode, adjusting the torque change speed corresponding to each speed change interval based on the wear parameter to reduce the wear degree of the target tire within the target time period to obtain an updated target torque output curve includes: In a first speed range, the output torque based on the initial torque output curve reduces the torque growth rate, in a second speed range, the output torque based on the initial torque output curve increases the torque growth rate, and in a third speed range, the output torque based on the initial torque output curve maintains the torque growth rate; The first speed change interval corresponds to an initial stage of acceleration of the target vehicle, the second speed change interval corresponds to an intermediate stage of acceleration of the target vehicle, and the third speed change interval corresponds to a final stage of acceleration of the target vehicle.

6. A device for reducing tire wear, characterized in that: include: A determination module, used to determine the wear parameter of outputting torque to the target tire according to the initial torque output curve; The initial torque output curve is a calibrated torque output curve of the target vehicle in the target scenario; the wear parameter is a parameter associated with the wear resistance of the target tire; A first processing module, configured to modify the initial torque output curve based on the wear parameter to obtain an updated target torque output curve; A second processing module, configured to control the output torque of the target vehicle to the target tire based on the target torque output curve in the target scenario; The wear parameter includes the friction work of the target tire, and the wear parameter for outputting torque to the target tire according to the initial torque output curve includes: Determining a design size of the target tire and a torque output to the target tire according to the initial torque output curve; Through finite element simulation analysis, based on the design size of the target tire and the torque output to the target tire, the friction work of the target tire is determined when the adhesion rate of the target tire is greater than the ground adhesion coefficient.

7. A vehicle, characterized in that: include: The vehicle body, intelligent control module, power unit for outputting torque, and target tires for driving the vehicle in motion; The intelligent control module is used to control the power device to output torque to the target tire according to the target torque output curve according to the method for reducing tire wear as described in any one of claims 1 to 5.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the program, the method for reducing tire wear as described in any one of claims 1 to 5 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for reducing tire wear as claimed in any one of claims 1 to 5 is implemented.

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