A vehicle axle load generation method and device, a terminal device and a storage medium

Abstract

The application provides a whole vehicle axle load generation method and device, terminal equipment and storage medium, the method comprises the following steps: obtaining the whole vehicle mass of a target vehicle model, dividing the whole vehicle mass into a ready-to-run mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states; calculating the ready-to-run mass front axle load of the ready-to-run mass module under the first whole vehicle wheelbase based on the correlation between each part in the ready-to-run mass module and the whole vehicle wheelbase; generating the passenger mass front axle load of the passenger mass module under the first whole vehicle wheelbase according to the distance from the passenger mass center to the front wheel center; generating the rated load mass front axle load of the rated load mass module under the first whole vehicle wheelbase according to the distance from the rear trunk center point to the front wheel center; and generating the whole vehicle axle load of the target vehicle model according to the ready-to-run mass front axle load, the passenger mass front axle load and the rated load mass front axle load. The application can improve the calculation efficiency and flexibility of the whole vehicle axle load of different vehicle models.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle design and optimization, and particularly relates to a whole vehicle axle load generation method and device, a terminal equipment and a storage medium. BACKGROUND

[0002] The whole vehicle axle load refers to the vertical load borne by each axle (front axle and rear axle) of the vehicle in a static or running state, and is usually expressed in mass (kg) or load percentage. It is a key parameter in vehicle design and performance evaluation, and reasonable load distribution of the front axle and the rear axle can improve the steering response, straight-line stability and handling performance in a curve of the vehicle. The axle load distribution determines the distribution of braking force. Reasonable front-rear axle load distribution can ensure reasonable distribution of braking force between the front axle and the rear axle, improve braking efficiency and reduce braking distance. Reasonable front-rear axle load distribution can also reduce the stress of the suspension system and improve the service life and performance of the suspension system. The whole vehicle axle load directly affects the design and selection of key components such as chassis, suspension and tires. Through rapid calculation and optimization of the axle load, the research and development efficiency of new vehicle models can be improved, and the cost can be reduced.

[0003] The commonly used whole vehicle axle load calculation methods in the prior art mainly include a fixed wheelbase calculation method and a calculation method based on a vehicle model matrix. The fixed wheelbase calculation method calculates the front-rear axle load of the vehicle when fully loaded by known parameters such as the whole vehicle kerb mass, front-rear axle load, driver's mass center position and wheelbase. The calculation method based on the vehicle model matrix generates a mass zoning list by analyzing and calculating the mass center positions of each component of the vehicle based on the vehicle model matrix. Then, the mass of each region is processed to generate a mass center wheelbase ratio list, and the mass center fitting calculation is performed based on the list to finally complete the estimation of the whole vehicle axle load. However, the fixed wheelbase calculation method is calculated under the assumption that the wheelbase is constant, and cannot quickly estimate the influence of the wheelbase change on the front-rear axle load. When the wheelbase is adjusted, the position of the whole vehicle mass center will change, resulting in significant changes in the front-rear axle load distribution, and the fixed wheelbase method cannot accurately reflect this change. In the case of wheelbase change, assuming that the whole vehicle mass center is constant will result in a large calculation error, and cannot meet the needs of rapid iteration of new vehicle models. The calculation method based on the vehicle model matrix needs to recalculate and update the mass center of all components of the vehicle model in the case of wheelbase adjustment, which has a huge calculation amount and takes a long time, and also cannot meet the needs of rapid iteration of new vehicle models. Neither the fixed wheelbase calculation method nor the calculation method based on the vehicle model matrix can quickly estimate the influence of the wheelbase change on the front-rear axle load, and it is difficult to support the rapid iteration of new vehicle models. In order to cope with the rapidly changing automobile market competition, a more efficient and flexible whole vehicle axle load generation method needs to be developed to support the rapid iteration of new vehicle model strategies and the rapid selection of chassis components. SUMMARY

[0004] The present application aims to provide a whole vehicle axle load generation method, device, terminal equipment and storage medium to solve the above technical problems and improve the whole vehicle axle load calculation efficiency and flexibility of different vehicle models.

[0005] To solve the above technical problems, the present application provides a whole vehicle axle load generation method, comprising:

[0006] Obtaining the whole vehicle mass of a target vehicle model, and dividing the whole vehicle mass into a ready mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states;

[0007] Calculating the ready mass front axle load of the ready mass module under the first whole vehicle wheelbase based on the correlation between each part in the ready mass module and the whole vehicle wheelbase; wherein the whole vehicle wheelbase comprises a front axle and a rear axle; and the first whole vehicle wheelbase is an adjusted whole vehicle wheelbase;

[0008] Generating the passenger mass front axle load of the passenger mass module under the first whole vehicle wheelbase according to the distance from the passenger mass center to the front wheel center;

[0009] Generating the rated load mass front axle load of the rated load mass module under the first whole vehicle wheelbase according to the distance from the trunk center point to the front wheel center;

[0010] Generating the whole vehicle axle load of the target vehicle model according to the ready mass front axle load, the passenger mass front axle load and the rated load mass front axle load.

[0011] In the above scheme, the whole vehicle mass is divided into a ready mass module, a passenger mass module and a rated load mass module, the complex whole vehicle mass distribution problem is decomposed into multiple independent modules, the calculation process is simplified, and the calculation amount is reduced. Based on the correlation between each part in the ready mass module and the whole vehicle wheelbase, the front axle load of the equivalent mass center of the ready mass module to the first whole vehicle wheelbase is calculated. This process takes into account the influence of the whole vehicle wheelbase, ensuring that the change of the mass center position can be accurately reflected when the wheelbase changes. Then, the passenger mass and the rated load mass module are generated according to the distance from the passenger mass center and the trunk center point to the front wheel center. Through modular processing and adjustment of key parameters, the whole vehicle axle load can be quickly calculated while adapting to the change of the wheelbase. Compared with the fixed wheelbase calculation method and the calculation method based on the vehicle model matrix in the prior art, this method has higher flexibility, accuracy and reliability, can support the rapid iteration of new vehicle models and the rapid selection of chassis parts, and meets the rapidly changing needs of the automobile market competition.

[0012] In an implementation manner, the calculation of the ready mass front axle load of the ready mass module under the first whole vehicle wheelbase based on the correlation between each part in the ready mass module and the whole vehicle wheelbase specifically comprises:

[0013] According to the correlation of each part and the front and rear axles, the parts in the complete vehicle mass module are divided into a first part group, a second part group and a third part group; wherein the first part group is a part combination strongly correlated with the front axle, the second part group is a part combination strongly correlated with the rear axle; and the third part group is the remaining parts in the complete vehicle mass module except the first part group and the second part group;

[0014] According to the center of mass of each part in each part group, an initial complete vehicle mass front axle load of the equivalent center of mass of each part group to the wheelbase of the complete vehicle is generated; wherein the expression of the initial complete vehicle mass front axle load is:

[0015] In the formula, G f1 is the initial complete vehicle mass front axle load; D is the wheelbase of the complete vehicle; X1 is the distance from the equivalent center of mass of the parts in the first part group to the front axle; g1 is the total mass of the parts in the first part group; X2 is the distance from the equivalent center of mass of the parts in the second part group to the front axle; g2 is the total mass of the parts in the second part group; X3 is the distance from the equivalent center of mass of the parts in the third part group to the front axle; and g3 is the total mass of the parts in the third part group;

[0016] An adjustment amount of the wheelbase of the complete vehicle is obtained, and a complete vehicle mass front axle load of each part group to the wheelbase of the complete vehicle is recalculated based on the adjustment amount; wherein the expression of the complete vehicle mass front axle load is:

[0017]

[0018] In the formula, d1 is the distance adjustment amount of the front axle; and d2 is the distance adjustment amount of the rear axle.

[0019] In the above scheme, by dividing the parts into the first part group strongly correlated with the front axle, the second part group strongly correlated with the rear axle and the third part group of other parts, the equivalent center of mass position of each part group can be accurately calculated, and the initial complete vehicle mass front axle load is generated accordingly. Through the recalculation based on the adjustment amount, the new complete vehicle mass front axle load can be quickly generated, the demand for rapid iteration of new vehicle models is met, and the research and development efficiency is improved.

[0020] In an implementation manner, before calculating the complete vehicle mass front axle load of the equivalent center of mass of the complete vehicle mass module under the first wheelbase of the complete vehicle based on the correlation of each part in the complete vehicle mass module and the wheelbase of the complete vehicle, the method further comprises:

[0021] determine whether each part in the curb mass module has a strong correlation with the front axle and the rear axle according to the assembly relationship, to obtain the first part group, the second part group and the third part group; wherein the first part group comprises front wheels, a steering system, a front subframe, a swing arm, a front suspension, front brakes and a front steering knuckle, the second part group comprises rear wheels, rear brakes, a rear subframe, a rear axle, a swing arm, a rear steering knuckle and a rear suspension; and the remaining parts in the curb mass module are taken as the third part group;

[0022] generate the distance from the equivalent center of mass of each part group to the front axle according to the distance from the center of mass of each part in the part group to the front wheel center; wherein the distance from the equivalent center of mass of the part group to the front axle is represented as:

[0023]

[0024] wherein X is the distance from the equivalent center of mass of the part group to the front axle; xi is the distance from the center of mass of the i th part to the front wheel center; gi is the mass of the i th part; and g is the total mass of the parts in the part group. i i i

[0025] In the above scheme, the parts are accurately divided into the first part group, the second part group and the third part group by judging the assembly relationship of each part in the curb mass module with the front axle and the rear axle. This ensures that the physical position and role of the key parts are considered in the calculation process, improving the accuracy of the calculation. Through modular processing, the complex vehicle mass distribution problem is decomposed into multiple independent calculation steps, making the calculation process clearer and easier to implement.

[0026] In an implementation manner, the generating of the passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to the distance from the passenger center of mass to the front wheel center specifically comprises:

[0027] obtaining the number of seats in the target vehicle model, and generating the passenger mass front axle load based on the distance from the passenger sitting posture reference point of each seat to the front wheel center; wherein the passenger sitting posture reference point of the seat is the passenger center of mass, and the expression of the passenger mass front axle load is:

[0028]

[0029] wherein G is the passenger mass front axle load; D is the vehicle wheelbase; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; xi is the distance from the passenger sitting posture reference point of the i th seat to the front wheel center; and G3 is the passenger mass. f3 j j

[0030] ​​In the above scheme, the distance from the passenger sitting posture reference point (i.e. passenger center of mass) of each seat to the front wheel center is obtained, and the passenger mass front axle load can be accurately calculated. This method directly considers the actual position of the passenger center of mass, avoiding the error caused by the assumption that the passenger center of mass position is fixed in the traditional method. The calculation of the passenger mass front axle load is independent of other modules (such as the curb weight and rated load mass), simplifying the calculation process and reducing the complexity and uncertainty in the calculation process.

[0031] In an implementation manner, the generating the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance from the trunk center to the front wheel center specifically includes:

[0032] Obtaining the distance from the trunk center to the front wheel center of the target vehicle model;

[0033] Generating the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance; wherein the expression of the rated load mass front axle load is:

[0034]

[0035] In the formula, G f4 is the rated load mass front axle load; D is the vehicle wheelbase; d1 is the front axle distance adjustment; d2 is the rear axle distance adjustment; x4 is the distance from the trunk center to the front wheel center; and G4 is the rated load mass of the target vehicle model.

[0036] In the above scheme, the front axle distance adjustment and the rear axle distance adjustment are introduced, which can flexibly adapt to the change of the wheelbase and ensure that the calculation result accurately reflects the influence of the wheelbase adjustment on the rated load mass front axle load. The calculation of the rated load mass front axle load is independent of other modules (such as the curb weight and passenger mass), simplifying the calculation process and being able to quickly support the rapid iteration of new vehicle models and the optimization selection of chassis parts, meeting the rapid change demand of the automobile market.

[0037] In a second aspect, the application also provides a vehicle axle load generation device, comprising: a mass division module, a first axle load module, a second axle load module, a third axle load module and a vehicle axle load module;

[0038] The mass division module is used to obtain the vehicle mass of a target vehicle model, and divide the vehicle mass into a curb weight module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states.

[0039] The first axle load module is configured to calculate the front axle load of the whole vehicle under the first wheelbase based on the correlation between each part in the whole vehicle mass module and the wheelbase of the whole vehicle; wherein the wheelbase of the whole vehicle comprises a front axle and a rear axle; and the first wheelbase is an adjusted wheelbase of the whole vehicle.

[0040] The second axle load module is configured to generate the front axle load of the passenger mass module under the first wheelbase according to the distance between the passenger mass center and the front wheel center.

[0041] The third axle load module is configured to generate the front axle load of the rated load mass module under the first wheelbase according to the distance between the trunk center and the front wheel center.

[0042] The whole vehicle axle load module is configured to generate the axle load of the target vehicle model according to the front axle load of the whole vehicle, the front axle load of the passenger mass, and the front axle load of the rated load mass.

[0043] In the above scheme, the whole vehicle mass is divided into a whole vehicle mass module, a passenger mass module, and a rated load mass module, the complex whole vehicle mass distribution problem is decomposed into multiple independent modules, the calculation process is simplified, and the calculation amount is reduced. Based on the correlation between each part in the whole vehicle mass module and the wheelbase of the whole vehicle, the front axle load of the equivalent mass center of the whole vehicle mass module to the first wheelbase is calculated. This process takes into account the influence of the wheelbase of the whole vehicle, ensuring that the change in the position of the mass center can be accurately reflected when the wheelbase changes. Then, according to the distance between the passenger mass center and the front wheel center and the distance between the trunk center and the front wheel center, the front axle loads of the passenger mass module and the rated load mass module under the first wheelbase are generated. Through modular processing and adjustment of key parameters, the axle load of the whole vehicle can be quickly calculated while adapting to changes in the wheelbase. Compared with the fixed wheelbase calculation method and the calculation method based on the vehicle model matrix in the prior art, the device has higher flexibility, accuracy, and reliability, can support rapid iteration of new vehicle models and rapid selection of chassis parts, and meets the rapidly changing needs of the automobile market competition.

[0044] In an implementation manner, the calculation of the front axle load of the equivalent mass center of the whole vehicle mass module under the first wheelbase based on the correlation between each part in the whole vehicle mass module and the wheelbase of the whole vehicle specifically comprises:

[0045] According to the correlation between each part and the front and rear axles, the parts in the whole vehicle mass module are divided into a first part group, a second part group, and a third part group; wherein the first part group is a part combination strongly correlated with the front axle, the second part group is a part combination strongly correlated with the rear axle, and the third part group is the remaining parts in the whole vehicle mass module except the first part group and the second part group.

[0046] An initial front axle load of each of the part groups is generated according to the center of mass of each part in the part group, and the initial front axle load of each of the part groups is to the wheelbase of the whole vehicle; wherein the expression of the initial front axle load is:

[0047] In the formula, G f1 is the initial front axle load; D is the wheelbase of the whole vehicle; X1 is the distance from the equivalent center of mass of the parts of the first part group to the front axle; g1 is the total mass of the parts of the first part group; X2 is the distance from the equivalent center of mass of the parts of the second part group to the front axle; g2 is the total mass of the parts of the second part group; X3 is the distance from the equivalent center of mass of the parts of the third part group to the front axle; g3 is the total mass of the parts of the third part group;

[0048] An adjustment amount of the wheelbase of the whole vehicle is obtained, and a front axle load of each of the part groups to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load is:

[0049]

[0050] In the formula, d1 is the distance adjustment amount of the front axle; d2 is the distance adjustment amount of the rear axle.

[0051] In an implementation, before the front axle load of the whole vehicle is calculated based on the association of each part in the whole vehicle with the wheelbase of the whole vehicle, the method further comprises:

[0052] The first part group, the second part group and the third part group are obtained according to the assembly relationship, wherein the first part group comprises front wheels, a steering system, a front subframe, a swing arm, a front suspension, front brakes, and a front steering knuckle; the second part group comprises rear wheels, rear brakes, a rear subframe, a rear axle, a swing arm, a rear steering knuckle, and a rear suspension; and the remaining parts in the whole vehicle are taken as the third part group.

[0053] The distance from the equivalent center of mass of each of the part groups to the front axle is generated according to the distance from the center of mass of each part in the part group to the center of the front wheel; wherein the expression of the distance from the equivalent center of mass of the part group to the front axle is:

[0054]

[0055] In the formula, X is the distance from the equivalent center of mass of the part group to the front axle; x i is the distance from the center of mass of the ith part to the center of the front wheel; g i is the mass of the ith part; and g is the total mass of the parts of the part group.

[0056] In an implementation, the second axle load module is configured to generate the passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to a distance from a passenger mass center to a front wheel center, and specifically includes: obtaining a number of seats in a target vehicle model, and generating the passenger mass front axle load based on a distance from a passenger sitting reference point of each seat to the front wheel center; wherein the passenger sitting reference point of the seat is the passenger mass center, and an expression of the passenger mass front axle load is:

[0057]

[0058] wherein, G f3 is the passenger mass front axle load; D is the vehicle wheelbase; d1 is a distance adjustment of a front axle; d2 is a distance adjustment of a rear axle; x j is a distance from a passenger sitting reference point of a jth seat to the front wheel center; and G3 is the passenger mass.

[0059] In an implementation, the third axle load module is configured to generate the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to a distance from a trunk center to the front wheel center, and specifically includes:

[0060] obtaining the distance from the trunk center of the target vehicle model to the front wheel center;

[0061] generating the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance; wherein an expression of the rated load mass front axle load is:

[0062]

[0063] wherein, G f4 is the rated load mass front axle load; D is the vehicle wheelbase; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; x4 is the distance from the trunk center to the front wheel center; and G4 is the rated load mass of the target vehicle model.

[0064] In a third aspect, the present application also provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor implements the vehicle axle load generation method as described above when executing the computer program.

[0065] In a fourth aspect, the present application also provides a computer readable storage medium, which includes a stored computer program, and the computer readable storage medium controls a device where the computer readable storage medium is located to execute the vehicle axle load generation method as described above when the computer program runs. BRIEF DESCRIPTION OF DRAWINGS

[0066] Figure 1A flowchart of a vehicle axle load generation method provided in an embodiment of the present application is shown in FIG. 1.

[0067] Figure 2 A module diagram of a vehicle axle load generation device provided in an embodiment of the present application is shown in FIG. 2. DETAILED DESCRIPTION

[0068] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0069] The terms "first" and "second" and the like in the specification and claims of the present application and the accompanying drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0070] In this document, reference to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is explicitly understood that the embodiments described herein can be combined with each other, even if this is not explicitly stated.

[0071] Embodiment 1

[0072] Reference is made to Figure 1 , Figure 1 A flowchart of a vehicle axle load generation method provided in an embodiment of the present application is shown in FIG. 1. The embodiment of the present application provides a vehicle axle load generation method, which includes steps 101 to 105, and each step is specifically as follows:

[0073] Step 101: Obtain the vehicle mass of a target vehicle model, and divide the vehicle mass into a curb mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states.

[0074] In the embodiment of the present application, the whole vehicle mass is divided into three modules, i.e., the curb mass, the passenger mass and the rated load mass, which are determined based on the reference mass of the vehicle itself, the actual mass of the passengers and the rated load capacity of the vehicle. The curb mass refers to the reference mass of the vehicle without any additional load (such as passengers and goods). It includes the mass of the standard configuration and the conventional equipment of the vehicle. The standard configuration includes the weight of the air conditioning system, the audio system, the instrument panel, the seat (without passengers) and the like. The conventional equipment includes the mass of the basic components such as the vehicle body structure, the engine, the transmission, the suspension system, the tire, the fuel tank (filled with fuel), the coolant, the lubricating oil, the battery and the like. The passenger mass refers to the total mass of the driver and the passengers of the vehicle, which is usually estimated according to the standardized mass. For example, the standard mass of 75 kg per person (including personal luggage) is commonly used internationally. In the vehicle design, the passenger mass is usually calculated according to the rated number of passengers (such as 5 seats or 7 seats) of the vehicle. The rated load mass refers to the maximum mass of the goods or load that the vehicle is allowed to carry during design and manufacturing, which usually does not include the passenger mass, i.e., the maximum allowed total mass minus the curb mass and the mass of the driver and the passengers in the cab. The rated load mass is determined according to factors such as the strength of the vehicle chassis, the suspension system, the load bearing capacity of the tire and the regulatory requirements. Dividing the whole vehicle mass into the curb mass, the passenger mass and the rated load mass helps to perform modular analysis on different parts and optimize the structural design and performance of the vehicle.

[0075] Step 102: calculating the curb mass front axle load of the equivalent mass center of the curb mass module under the first whole vehicle wheelbase based on the correlation between each part in the curb mass module and the whole vehicle wheelbase; wherein the whole vehicle wheelbase includes the front axle and the rear axle; and the first whole vehicle wheelbase is the adjusted whole vehicle wheelbase.

[0076] In an embodiment, the calculation of the curb mass front axle load of the equivalent mass center of the curb mass module under the first whole vehicle wheelbase based on the correlation between each part in the curb mass module and the whole vehicle wheelbase specifically includes:

[0077] According to the correlation between each part and the front and rear axles, the parts in the curb mass module are divided into a first part group, a second part group and a third part group; wherein the first part group is a part combination strongly correlated with the front axle, the second part group is a part combination strongly correlated with the rear axle, and the third part group is the remaining parts in the curb mass module except the first part group and the second part group.

[0078] According to the mass center of each part in each part group, the initial curb mass front axle load of the equivalent mass center of each part group to the whole vehicle wheelbase is generated; wherein the expression of the initial curb mass front axle load is:

[0079]

[0080] In the formula, G f1 is the initial kerb mass front axle load; D is the wheelbase of the vehicle; X1 is the distance from the equivalent mass center of the first part group to the front axle; g1 is the total mass of the parts in the first part group; X2 is the distance from the equivalent mass center of the second part group to the front axle; g2 is the total mass of the parts in the second part group; X3 is the distance from the equivalent mass center of the third part group to the front axle; g3 is the total mass of the parts in the third part group;

[0081] obtaining an adjustment amount of the wheelbase of the vehicle, and recalculating the kerb mass front axle load of each part group to the wheelbase of the vehicle based on the adjustment amount, wherein the expression of the kerb mass front axle load is:

[0082]

[0083] In the formula, d1 is the distance adjustment amount of the front axle; and d2 is the distance adjustment amount of the rear axle.

[0084] In the embodiment of the present application, the first part group is the part strongly associated with the front axle, which means that the part is directly connected with the front axle in mechanics and has a greater impact on the front axle load due to its position and weight; the second part group is the part strongly associated with the rear axle, which means that the part is directly connected with the rear axle in mechanics and has a greater impact on the rear axle load due to its position and weight; and the third part group is the part weakly associated with the front and rear axles, or the part that is difficult to be classified into the first group or the second group in the assembly relationship. The equivalent mass center position of each part group is generated according to the mass center of each part in each part group, and the initial kerb mass front axle load is calculated, the adjustment amount of the wheelbase of the vehicle is obtained, and the kerb mass front axle load of each part group to the wheelbase of the vehicle is recalculated based on the adjustment amount. The kerb mass front axle load is directly calculated by the equivalent mass center position, which avoids complex mechanical analysis. The kerb mass module can be independently calculated, is convenient to be used in combination with other modules (such as the passenger mass module and the rated load mass module), and is suitable for vehicle models with different part arrangements, and can quickly adjust the calculation result to adapt to design changes.

[0085] In one embodiment, in the calculation of the kerb mass front axle load of the equivalent mass center of the kerb mass module at the first wheelbase of the vehicle based on the association relationship between the parts in the kerb mass module and the wheelbase of the vehicle, the method further comprises:

[0086] determining whether each part in the assembled mass module has a strong correlation with the front axle and the rear axle according to the assembly relationship, to obtain the first part group, the second part group and the third part group; wherein the first part group comprises front wheels, a steering system, a front subframe, a swing arm, a front suspension, front brakes and a front steering knuckle, the second part group comprises rear wheels, rear brakes, a rear subframe, a rear axle, a swing arm, a rear steering knuckle and a rear suspension; and the remaining parts in the assembled mass module are taken as the third part group;

[0087] generating the distance from the equivalent center of mass of each part group to the front axle according to the distance from the center of mass of each part in the part group to the center of the front wheel; wherein the distance from the equivalent center of mass of the part group to the front axle is represented as:

[0088]

[0089] wherein X is the distance from the equivalent center of mass of the part group to the front axle; xi is the distance from the center of mass of the ith part to the center of the front wheel; gi is the mass of the ith part; and g is the total mass of the parts in the part group. i i

[0090] ​​In the embodiment of the present application, the first part group includes front wheels, a steering system, a front subframe, a swing arm, a front suspension, front brakes, and a front knuckle, etc. Specifically, the front wheels include tires and hubs; the steering system includes a steering engine, a power pump, a steering column, a steering column, etc.; the front subframe includes a front subframe assembly and its accessories; the swing arm is a swing arm part of a front suspension; the front suspension is a front suspension system, including springs, shock absorbers, etc.; the front brakes are front brake systems, including brake discs, brake pads, brake calipers, etc.; and the front steering is a knuckle part of a front axle. Further, the first part group also includes front bumpers, front grilles, headlamps, etc. which are strongly associated with the front axle. The second part group includes rear wheels, rear brakes, a rear subframe, a rear axle, a swing arm, a rear knuckle, and a rear suspension. Specifically, the rear wheels include tires and hubs; the rear brakes are rear brake systems, including brake discs, brake pads, brake calipers, etc.; the rear subframe includes a rear subframe assembly and its accessories; the rear axle is a rear axle assembly, including a differential, a transmission shaft, etc.; the swing arm is a swing arm part of a rear suspension; the rear steering is a knuckle part of a rear axle (if present); and the rear suspension is a rear suspension system, including springs, shock absorbers, etc. Further, the second part group also includes rear bumpers, trunk floors, etc. which are strongly associated with the rear axle. The third part group includes body structure parts, interior parts, power systems, electrical systems, auxiliary systems, and other accessories. Specifically, the body structure parts include a body shell, a roof, doors, etc.; the interior parts include seats (excluding passengers), instrument panels, carpets, linings, etc.; the power systems include an engine, a transmission, a fuel tank (full of fuel), a cooling system, etc.; the electrical systems include a battery, a generator, a wire harness, etc.; the auxiliary systems include an air conditioning system, a sound system, a navigation system, etc.; and the other accessories include spare tires, toolboxes, luggage racks, etc.

[0091] After the part group division is completed, the distance from the equivalent center of mass of each part group to the front axle is generated according to the distance from the center of mass of each part in the divided part group to the center of the front wheel. By dividing the parts in the complete module into different groups, the equivalent center of mass of each group of parts can be calculated independently. It is suitable for different part arrangement vehicle models, and can quickly adjust the calculation result to adapt to design changes. Through the calculation of the equivalent center of mass position, the influence of the parts on the front axle load can be more accurately reflected.

[0092] Step 103: generating a passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to the distance from the passenger center of mass to the center of the front wheel.

[0093] In an embodiment, the generating of the passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to the distance from the passenger center of mass to the center of the front wheel specifically includes:

[0094] Obtaining the number of seats in the target vehicle model, generating the passenger mass front axle load based on the distance from the passenger sitting posture reference point of each seat to the front wheel center; wherein the passenger sitting posture reference point of the seat is the passenger mass center, and the expression of the passenger mass front axle load is:

[0095]

[0096] In the formula, G f3 is the passenger mass front axle load; D is the wheelbase of the vehicle; d1 is the distance adjustment amount of the front axle; d2 is the distance adjustment amount of the rear axle; x j is the distance from the passenger sitting posture reference point of the jth seat to the front wheel center; G3 is the passenger mass.

[0097] The H point of the vehicle seat is a reference point used to describe the passenger sitting posture in vehicle design, and is usually located at the position of the human hip joint. The position of the H point is determined by the seat design and arrangement, and is the key point of the passenger mass action. Since the passenger mass is uniformly distributed on the seat, the mass center position of each passenger coincides with the sitting posture reference point of the seat. By calculating the distance from the passenger mass center of each seat to the front wheel center, combined with the wheelbase of the vehicle and the distance adjustment amount of the front and rear axles, the passenger mass front axle load can be generated. Specifically, the distance from the sitting posture reference point of the seat to the front wheel center can be obtained through the vehicle design drawing, or determined through actual measurement. By considering the passenger mass center position of each seat, the influence of the passenger mass on the front axle load can be more accurately calculated. It is suitable for vehicle models with different seat arrangements, can quickly adjust the calculation results to adapt to design changes, independently calculates the passenger mass module, and is convenient for use in combination with other modules (such as the curb weight module).

[0098] Step 104: generating the rated load mass front axle load of the rated load mass module under the first wheelbase of the vehicle according to the distance from the trunk center to the front wheel center.

[0099] In an embodiment, the generating the rated load mass front axle load of the rated load mass module under the first wheelbase of the vehicle according to the distance from the trunk center to the front wheel center specifically comprises:

[0100] Obtaining the distance from the trunk center of the target vehicle model to the front wheel center;

[0101] Generating the rated load mass front axle load of the rated load mass module under the first wheelbase of the vehicle according to the distance; wherein the expression of the rated load mass front axle load is:

[0102]

[0103] In the formula, G f4is the rated load front axle load; D is the wheelbase of the vehicle; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; x4 is the distance from the trunk center to the front wheel center; and G4 is the rated load of the target vehicle model.

[0104] In the embodiment of the present application, the position of the trunk center to the front wheel center is obtained from vehicle design drawings or actual measurement, and the influence of the rated load on the front axle load is calculated by considering the position of the trunk center. The method is suitable for vehicle models with different trunk layouts and load requirements, and can quickly adjust the calculation results to adapt to design changes.

[0105] Step 105: generating the vehicle axle load of the target vehicle model according to the curb weight front axle load, the passenger mass front axle load and the rated load front axle load.

[0106] In the embodiment of the present application, the total mass of the vehicle is transmitted to the ground through the front and rear axles. By adding the front axle loads of each mass module, the vehicle axle load can be obtained. That is, the vehicle axle load G f = G f2 + G f3 + G f4 By integrating the curb weight front axle load, the passenger mass front axle load and the rated load front axle load, the vehicle axle load of the target vehicle model can be generated. This method can comprehensively consider the influence of different mass modules on the axle load, and provide accurate data support for vehicle design and performance evaluation.

[0107] For example, the wheelbase of a certain vehicle model is adjusted from 3300 to 3550, and the curb weight front axle load after the wheelbase is updated is calculated by using the existing calculation method based on fixed wheelbase, the calculation method based on vehicle matrix and the vehicle axle load generation method provided by the present application. If the calculation method based on fixed wheelbase is used, the mass center of each part needs to be updated one by one, the calculation accuracy is high, but the data updating range is large (more than 100 subsystems and more than 1000 parts), in order to avoid errors, it needs to be checked for several times, and the time consumption is nearly 2-3 hours, and the front axle load is 820.78 kg after conversion; if the calculation method based on vehicle matrix is used, the approximate vehicle mass center is not changed for quick estimation, only the original curb weight and the change of the wheelbase are counted, the time consumption is 2 minutes, and the front axle load is calculated as 844.56 kg, but the estimation value is 23.78 kg different from the result obtained by the calculation method based on fixed wheelbase, which has low accuracy and affects the design of downstream area. However, by using the vehicle axle load generation method provided by the present application, the curb weight module is grouped, and only the weight sum of each group of parts and the change of the curb weight and the wheelbase need to be counted. The time consumption is about 5 minutes, and the front axle load is calculated as 823.2 kg, but the estimation value is only 2.42 kg different from the result obtained by the calculation method based on fixed wheelbase, which has smaller error and higher calculation efficiency.

[0108] In the embodiments of the present application, a vehicle axle load generation device is also provided, which comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the computer program is executed by the processor to implement the vehicle axle load generation method.

[0109] In the embodiments of the present application, a computer readable storage medium is also provided, which comprises a stored computer program, wherein the computer readable storage medium controls the device where the computer readable storage medium is located to execute the vehicle axle load generation method when the computer program is running.

[0110] For example, the computer program can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present application. One or more modules can be a series of computer program instructions capable of completing a function, which are used to describe the execution process of the computer program in the vehicle axle load generation device.

[0111] The vehicle axle load generation device can be a desktop computer, a notebook computer, a palm computer, a cloud server, and other computing devices. The vehicle axle load generation device can include, but is not limited to, a processor, a memory, and a display. Those skilled in the art can understand that the above components are only examples of the vehicle axle load generation device, and do not constitute a limitation on the vehicle axle load generation device, and can include more or fewer components, or combine certain components, or different components, for example, the vehicle axle load generation device can also include an input / output device, a network access device, a bus, etc.

[0112] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc. The processor is the control center of the vehicle axle load generation device, which connects all parts of the vehicle axle load generation device through various interfaces and lines.

[0113] The memory can be used to store computer programs and / or modules, and the processor realizes various functions of the whole vehicle axle load generation device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playing function, a text conversion function, etc.), etc.; and the data storage area can store data created according to the use of the mobile phone (such as audio data, text message data, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0114] When the module for generating the whole vehicle axle load is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. When the processor executes the computer program, the steps of the above-mentioned various method embodiments can be realized. The computer program includes computer program code, which can be in the form of source code, object code, an executable file, or some intermediate form, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, a recording medium, a U disk, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. Those of ordinary skill in the art can understand and implement without creative labor.

[0115] The embodiment of the present application provides a vehicle axle load generation method, which divides the vehicle mass into a prepared mass module, a passenger mass module and a rated load mass module, decomposes the complex vehicle mass distribution problem into multiple independent modules, simplifies the calculation process and reduces the calculation amount. Based on the correlation between each part in the prepared mass module and the vehicle wheelbase, the equivalent mass center of the prepared mass module to the front axle load of the first vehicle wheelbase is calculated. This process considers the influence of the vehicle wheelbase, and ensures that the change of the mass center position can be accurately reflected when the wheelbase changes. Then, the passenger mass and the rated load mass module under the first vehicle wheelbase are generated according to the distance from the passenger mass center and the trunk center point to the front wheel center. Through modular processing and adjustment of key parameters, the vehicle axle load can be quickly adapted to the change of the wheelbase and accurately calculated. Compared with the fixed wheelbase calculation method and the calculation method based on the vehicle type matrix in the prior art, the method has higher flexibility, accuracy and reliability, can support the rapid iteration of new vehicle models and the rapid selection of chassis parts, and meets the rapidly changing demand of automobile market competition.

[0116] Embodiment 2

[0117] Reference Figure 2 , Figure 2 A module schematic diagram of a vehicle axle load generation device provided in an embodiment of the present application. The embodiment of the present application provides a vehicle axle load generation device, which comprises a mass division module 201, a first axle load module 202, a second axle load module 203, a third axle load module 204 and a vehicle axle load module 205.

[0118] The mass division module 201 is used to obtain the vehicle mass of a target vehicle, and divide the vehicle mass into a prepared mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states.

[0119] The first axle load module 202 is used to calculate the prepared mass front axle load of the prepared mass module under the first vehicle wheelbase based on the correlation between each part in the prepared mass module and the vehicle wheelbase; wherein the vehicle wheelbase comprises a front axle and a rear axle; and the first vehicle wheelbase is an adjusted vehicle wheelbase.

[0120] The second axle load module 203 is used to generate the passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to the distance from the passenger mass center to the front wheel center.

[0121] The third axle load module 204 is used to generate the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance from the trunk center point to the front wheel center.

[0122] The whole vehicle axle load module 205 is used to generate the whole vehicle axle load of the target vehicle model according to the kerb mass front axle load, the passenger mass front axle load and the rated load mass front axle load.

[0123] In an embodiment, the first axle load module 202 is used to calculate the kerb mass front axle load of the equivalent mass center of the kerb mass module under the first whole vehicle wheelbase based on the association of each part in the kerb mass module with the whole vehicle wheelbase, specifically comprising: dividing the parts in the kerb mass module into a first part group, a second part group and a third part group according to the association of each part with the front and rear axles; wherein the first part group is a part combination strongly associated with the front axle, the second part group is a part combination strongly associated with the rear axle, and the third part group is the remaining parts in the kerb mass module except the first part group and the second part group;

[0124] generating the initial kerb mass front axle load of the equivalent mass center of each part group to the whole vehicle wheelbase according to the mass center of each part in each part group; wherein the expression of the initial kerb mass front axle load is:

[0125] In the formula, G f1 is the initial kerb mass front axle load; D is the whole vehicle wheelbase; X1 is the distance from the equivalent mass center of the parts in the first part group to the front axle; g1 is the total mass of the parts in the first part group; X2 is the distance from the equivalent mass center of the parts in the second part group to the front axle; g2 is the total mass of the parts in the second part group; X3 is the distance from the equivalent mass center of the parts in the third part group to the front axle; g3 is the total mass of the parts in the third part group;

[0126] obtaining the adjustment amount of the whole vehicle wheelbase, and recalculating the kerb mass front axle load of each part group to the whole vehicle wheelbase based on the adjustment amount; wherein the expression of the kerb mass front axle load is:

[0127]

[0128] In the formula, d1 is the distance adjustment amount of the front axle; d2 is the distance adjustment amount of the rear axle.

[0129] In an embodiment, in the calculation of the kerb mass front axle load of the equivalent mass center of the kerb mass module under the first whole vehicle wheelbase based on the association of each part in the kerb mass module with the whole vehicle wheelbase, it further comprises:

[0130] determine whether each part in the curb mass module has a strong correlation with the front axle and the rear axle according to the assembly relationship, to obtain the first part group, the second part group and the third part group; wherein the first part group comprises front wheels, a steering system, a front subframe, a swing arm, a front suspension, front brakes and a front steering knuckle, the second part group comprises rear wheels, rear brakes, a rear subframe, a rear axle, a swing arm, a rear steering knuckle and a rear suspension; and the remaining parts in the curb mass module are taken as the third part group;

[0131] generate the distance from the equivalent center of mass of each part group to the front axle according to the distance from the center of mass of each part in the part group to the center of the front wheel; wherein the distance from the equivalent center of mass of the part group to the front axle is represented as:

[0132]

[0133] wherein X is the distance from the equivalent center of mass of the part group to the front axle; x i is the distance from the center of mass of the ith part to the center of the front wheel; g i is the mass of the ith part; and g is the total mass of the parts in the part group.

[0134] In an embodiment, the second axle load module 203 is configured to generate the passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to the distance from the center of mass of the passenger to the center of the front wheel, and specifically comprises: obtaining the number of seats in the target vehicle model, and generating the passenger mass front axle load based on the distance from the passenger sitting posture reference point of each seat to the center of the front wheel; wherein the passenger sitting posture reference point of the seat is the center of mass of the passenger, and the expression of the passenger mass front axle load is:

[0135]

[0136] wherein G f3 is the passenger mass front axle load; D is the wheelbase of the vehicle; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; x j is the distance from the passenger sitting posture reference point of the jth seat to the center of the front wheel; and G3 is the mass of the passenger.

[0137] In an embodiment, the third axle load module 204 is configured to generate the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance from the center of the trunk to the center of the front wheel, and specifically comprises:

[0138] obtaining the distance from the center of the trunk of the target vehicle model to the center of the front wheel;

[0139] generating the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance; wherein the expression of the rated load mass front axle load is:

[0140]

[0141] In the formula, G f4 is the rated load mass of the front axle; D is the wheelbase of the vehicle; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; x4 is the distance from the center of the trunk to the wheel center of the front wheel; and G4 is the rated load mass of the target vehicle model.

[0142] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0143] The vehicle axle load generation device provided by the embodiments of the present application divides the vehicle mass into a curb mass module, a passenger mass module and a rated load mass module, decomposes the complex vehicle mass distribution problem into multiple independent modules, simplifies the calculation process and reduces the calculation amount. Based on the correlation between each part in the curb mass module and the wheelbase of the vehicle, the front axle load of the equivalent center of mass of the curb mass module to the first wheelbase of the vehicle is calculated. This process takes into account the influence of the wheelbase, ensuring that the change in the center of mass position can be accurately reflected when the wheelbase changes. Then, according to the distance from the passenger center of mass and the center of the trunk to the wheel center of the front wheel, the front axle load of the passenger mass and the rated load mass module under the first wheelbase of the vehicle is generated. Through modular processing and adjustment of key parameters, the vehicle axle load can be quickly adapted to the change in the wheelbase and accurately calculated. Compared with the fixed wheelbase calculation method and the calculation method based on the vehicle model matrix in the prior art, the device has higher flexibility, accuracy and reliability, can support the rapid iteration of new vehicle models and the rapid selection of chassis parts, and meets the rapidly changing needs of the automobile market competition.

[0144] The above is only the preferred embodiment of the present application, and it should be noted that for those skilled in the art, without departing from the technical principles of the present application, several improvements and substitutions can be made, which should also be considered as the protection scope of the present application.

Claims

1. A method of generating a vehicle axle load, characterized by, The method comprises the following steps: Obtain the total vehicle mass of a target vehicle model, and divide the total vehicle mass into a full load mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states; Calculate the front axle load of the full load mass module under the first total vehicle wheelbase based on the correlation between each part in the full load mass module and the total vehicle wheelbase; wherein the total vehicle wheelbase comprises a front axle and a rear axle; the first total vehicle wheelbase is an adjusted total vehicle wheelbase; Generate the passenger mass front axle load of the passenger mass module under the first total vehicle wheelbase according to the distance from the passenger mass center to the front wheel center; Generate the rated load mass front axle load of the rated load mass module under the first total vehicle wheelbase according to the distance from the trunk center point to the front wheel center; Generate the total vehicle axle load of the target vehicle model according to the full load mass front axle load, the passenger mass front axle load and the rated load mass front axle load.

2. The method of claim 1, wherein, The calculation of the front axle load of the full load mass module under the first total vehicle wheelbase based on the correlation between each part in the full load mass module and the total vehicle wheelbase comprises the following steps: Divide the parts in the full load mass module into a first part group, a second part group and a third part group according to the correlation between each part and the front and rear axles; wherein the first part group is a part combination with strong correlation to the front axle, the second part group is a part combination with strong correlation to the rear axle, and the third part group is the remaining parts in the full load mass module except the first part group and the second part group; Generate the initial full load mass front axle load of each part group to the total vehicle wheelbase according to the mass center of each part in each part group; wherein the expression of the initial full load mass front axle load is: where G f1 is the initial curb mass front axle load; D is the overall vehicle wheelbase; X1 is the distance from the first part group's equivalent center of mass to the front axle; g1 is the total mass of the first part group; X2 is the distance from the second part group's equivalent center of mass to the front axle; g2 is the total mass of the second part group; X3 is the distance from the third part group's equivalent center of mass to the front axle; g3 is the total mass of the third part group; Obtain the adjustment amount of the total vehicle wheelbase, and recalculate the full load mass front axle load of each part group to the total vehicle wheelbase based on the adjustment amount; wherein the expression of the full load mass front axle load is: In the formula, d1 is the distance adjustment amount of the front axle, and d2 is the distance adjustment amount of the rear axle.

3. The method of claim 2, wherein, The calculation of the front axle load of the full load mass module under the first total vehicle wheelbase based on the correlation between each part in the full load mass module and the total vehicle wheelbase further comprises the following steps: Determine whether there is a strong correlation between each part in the full load mass module and the front axle and the rear axle according to the assembly relationship, and obtain the first part group, the second part group and the third part group; wherein the first part group comprises the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake and the front steering knuckle, the second part group comprises the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension, and the remaining parts in the full load mass module are taken as the third part group; Generate the distance from the equivalent mass center of each part group to the front axle according to the distance from the mass center of each part in the part group to the front wheel center; wherein the expression of the distance from the equivalent mass center of the part group to the front axle is: where X is the distance from the equivalent center of mass of the group of parts to the front axle; x i is the distance from the center of mass of the ith part to the front wheel center; g i is the mass of the ith part; and g is the sum of the part masses of the group of parts.

4. The method of claim 1, wherein, The generation of the passenger mass front axle load of the passenger mass module under the first total vehicle wheelbase according to the distance from the passenger mass center to the front wheel center comprises the following steps: Obtaining the number of seats in the target vehicle model, generating the passenger mass front axle load based on the distance from the passenger sitting posture reference point of each seat to the front wheel center; wherein the passenger sitting posture reference point of the seat is the passenger mass center, and the expression of the passenger mass front axle load is: In the formula, G f3 is the front axle load of the passenger mass; D is the wheelbase of the whole vehicle; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; x j is the distance from the sitting posture reference point of the jth seat to the front wheel center; G3 is the passenger mass.

5. The method of claim 1, wherein, The module for generating the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance from the trunk center to the front wheel center, specifically includes: Obtaining the distance from the trunk center of the target vehicle model to the front wheel center; Generating the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance; wherein the expression of the rated load mass front axle load is: In the formula, G f4 is the rated load front axle load; D is the overall vehicle wheelbase; d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle; x4 is the distance from the center of the trunk to the front wheel center; and G4 is the rated load of the target vehicle model.

6. A vehicle axle load generating device characterized by comprising: Including: The mass division module, the first axle load module, the second axle load module, the third axle load module and the vehicle axle load module; The mass division module is used to obtain the total vehicle mass of the target vehicle model, and divide the total vehicle mass into the ready-to-use mass module, the passenger mass module and the rated load mass module according to the mass distribution of the vehicle in different states; The first axle load module is used to calculate the ready-to-use mass front axle load of the equivalent mass center of the ready-to-use mass module under the first vehicle wheelbase based on the correlation between each part in the ready-to-use mass module and the vehicle wheelbase; wherein the vehicle wheelbase includes the front axle and the rear axle; the first vehicle wheelbase is the adjusted vehicle wheelbase; The second axle load module is used to generate the passenger mass front axle load of the passenger mass module under the first vehicle wheelbase according to the distance from the passenger mass center to the front wheel center; The third axle load module is used to generate the rated load mass front axle load of the rated load mass module under the first vehicle wheelbase according to the distance from the trunk center to the front wheel center; The vehicle axle load module is used to generate the vehicle axle load of the target vehicle model according to the ready-to-use mass front axle load, the passenger mass front axle load and the rated load mass front axle load.

7. The vehicle axle load generating device according to claim 6, wherein The first axle load module is used to calculate the ready-to-use mass front axle load of the equivalent mass center of the ready-to-use mass module under the first vehicle wheelbase based on the correlation between each part in the ready-to-use mass module and the vehicle wheelbase, specifically including: According to the correlation between each part and the front and rear axles, the parts in the ready-to-use mass module are divided into the first part group, the second part group and the third part group; wherein the first part group is a part combination strongly correlated with the front axle, the second part group is a part combination strongly correlated with the rear axle; the third part group is the remaining parts in the ready-to-use mass module except the first part group and the second part group; Generating the initial ready-to-use mass front axle load of the equivalent mass center of each part group to the vehicle wheelbase according to the mass center of each part in each part group; wherein the expression of the initial ready-to-use mass front axle load is: where G f1 is the initial curb mass front axle load; D is the overall vehicle wheelbase; X1 is the distance from the first part group's equivalent center of mass to the front axle; g1 is the total mass of the first part group; X2 is the distance from the second part group's equivalent center of mass to the front axle; g2 is the total mass of the second part group; X3 is the distance from the third part group's equivalent center of mass to the front axle; g3 is the total mass of the third part group; Obtaining the adjustment amount of the vehicle wheelbase, recalculating the ready-to-use mass front axle load of each part group to the vehicle wheelbase based on the adjustment amount; wherein the expression of the ready-to-use mass front axle load is: In the formula, d1 is the distance adjustment amount of the front axle; d2 is the distance adjustment amount of the rear axle.

8. The vehicle axle load generating device according to claim 7, wherein Before calculating the front axle load of the whole vehicle mass module at the first wheelbase based on the correlation between each part in the whole vehicle mass module and the wheelbase of the whole vehicle, the method further comprises: determining whether each part in the whole vehicle mass module has a strong correlation with the front axle and the rear axle according to the assembly relationship, to obtain the first part group, the second part group and the third part group; wherein the first part group comprises front wheels, a steering system, a front subframe, a swing arm, a front suspension, front brakes and a front steering knuckle, the second part group comprises rear wheels, rear brakes, a rear subframe, a rear axle, a swing arm, a rear steering knuckle and a rear suspension, and the remaining parts in the whole vehicle mass module are taken as the third part group; generating the distance between the equivalent center of mass of each part group and the front axle according to the distance between the center of mass of each part in the part group and the center of the front wheel; wherein the distance between the equivalent center of mass of the part group and the front axle is represented as: where X is the distance from the equivalent center of mass of the group of parts to the front axle; x i is the distance from the center of mass of the ith part to the front wheel center; g i is the mass of the ith part; and g is the sum of the part masses of the group of parts.

9. A terminal device, comprising: The computer readable storage medium comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, and the computer program is executed by the processor to implement the whole vehicle axle load generation method according to any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored computer program, wherein the computer readable storage medium controls the device where the computer readable storage medium is located to execute the whole vehicle axle load generation method according to any one of claims 1 to 5 when the computer program is running.

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