Whole vehicle axle load generation method and device, terminal equipment and storage medium

Abstract

The invention provides a whole vehicle axle load generation method and device, terminal equipment and a storage medium, and the method comprises the steps: obtaining the whole vehicle mass of a target vehicle model, and dividing the whole vehicle mass into a servicing mass module, a passenger mass module and a rated load mass module according to the mass distribution of the vehicle in different states; calculating a servicing mass front axle load of an equivalent mass center of the servicing mass module under the first whole vehicle axle distance based on an association relationship between each part in the servicing mass module and the whole vehicle axle distance; a passenger mass front axle load of the passenger mass module under the first vehicle axle distance is generated according to the distance between the passenger mass center and the front wheel center; generating a rated load mass front axle load of the rated load mass module under the first vehicle axle distance according to the distance from the center point of the trunk to the center of a front wheel; and according to the curb mass front axle load, the passenger mass front axle load and the rated load mass front axle load, the whole vehicle axle load of the target vehicle model is generated. According to the method, the whole vehicle axle load calculation efficiency and flexibility of different vehicle types can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle design and optimization, and in particular to a method, device, terminal equipment and storage medium for generating axle load of a whole vehicle. Background Art

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

[0003] The commonly used vehicle axle load calculation methods in the prior art mainly include the calculation method of fixed wheelbase and the calculation method based on vehicle model matrix. The calculation method of fixed wheelbase calculates the front and rear axle loads of the vehicle when fully loaded through the known parameters such as the curb weight of the vehicle, the front and rear axle loads, the position of the driver's center of mass, and the wheelbase. The calculation method based on the vehicle model matrix is ​​based on the vehicle model matrix, and generates a mass partition list by analyzing and calculating the center of mass position of each component of the vehicle. Then the mass of each area is processed to generate a list of center of mass wheelbase ratios, and the center of mass fitting calculation is performed based on this list to finally complete the estimation of the vehicle axle load. However, the calculation method of fixed wheelbase is calculated under the assumption that the wheelbase remains unchanged, and it is impossible to quickly estimate the impact of wheelbase changes on the front and rear axle loads. When the wheelbase is adjusted, the position of the center of mass of the vehicle will change, resulting in a significant change in the distribution of the front and rear axle loads, and the fixed wheelbase method cannot accurately reflect this change. In the case of a change in wheelbase, assuming that the center of mass of the vehicle remains unchanged will lead to a large calculation error, which cannot meet the needs of rapid iteration of new models. The calculation method based on the vehicle model matrix requires the recalculation and update of the center of mass of all vehicle parts when the wheelbase is adjusted. This requires a huge amount of calculation and is time-consuming. It also cannot meet the needs of rapid iteration of new models. Whether it is the calculation method with a fixed wheelbase or the calculation method based on the vehicle model matrix, it is impossible to quickly estimate the impact of wheelbase changes on the front and rear axle loads, and it is difficult to support the rapid iteration of new models. In order to cope with the rapidly changing competition in the automobile market, it is necessary to develop a more efficient and flexible vehicle axle load generation method to support the rapid iteration of new vehicle model strategies and the rapid selection of chassis parts. Summary of the invention

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

[0005] In order to solve the above technical problems, the present invention provides a method for generating axle load of a whole vehicle, comprising:

[0006] Obtaining the vehicle mass of the target vehicle model, and dividing 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;

[0007] Based on the correlation between each part in the curb mass module and the wheelbase of the vehicle, the curb mass front axle load of the equivalent center of mass of the curb mass module under the first wheelbase of the vehicle is calculated; wherein the wheelbase of the vehicle includes the front axle and the rear axle; the first wheelbase of the vehicle is the adjusted wheelbase of the vehicle;

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

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

[0010] The vehicle axle load of the target vehicle model is generated according to the curb mass front axle load, the passenger mass front axle load and the rated load front axle load.

[0011] In the above scheme, the vehicle mass is divided into the curb mass module, the passenger mass module and the rated load module, and the complex vehicle mass distribution problem is decomposed into multiple independent modules, which simplifies the calculation process and reduces the amount of calculation. Based on the correlation between each part in the curb mass module and the wheelbase of the vehicle, the front axle load from 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 of the vehicle to ensure 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 point of the trunk to the center of the front wheel, the front axle load of the passenger mass and rated load module under the first wheelbase of the vehicle is generated. Through modular processing and adjustment of key parameters, it can quickly adapt to wheelbase changes and accurately calculate the vehicle axle load. 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 models and the rapid selection of chassis parts, and meet the rapidly changing competition needs of the automobile market.

[0012] In one implementation, the calculating of the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the association between each part in the curb mass module and the vehicle wheelbase specifically includes:

[0013] The parts in the curb mass module are divided into a first part group, a second part group and a third part group according to the association relationship between each part and the front and rear axles; wherein the first part group is a combination of parts strongly associated with the front axle, the second part group is a combination of parts strongly associated with the rear axle; the third part group is the remaining parts in the curb mass module except the first part group and the second part group;

[0014] The initial curb weight front axle load from the equivalent center of mass of each part group to the wheelbase of the vehicle is generated according to the center of mass of each part in each part group; wherein the expression of the initial curb weight front axle load is:

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

[0016] The adjustment amount of the wheelbase of the whole vehicle is obtained, and the front axle load of the curb weight of each component group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load of the curb weight is:

[0017]

[0018] Where d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle.

[0019] In the above scheme, by dividing the parts into a first part group strongly associated with the front axle, a second part group strongly associated with the rear axle, and a third part group of other parts, the equivalent center of mass position of each part group can be accurately calculated, and the initial curb weight front axle load can be generated accordingly. By recalculating based on the adjustment amount, a new curb weight front axle load can be quickly generated, meeting the needs of rapid iteration of new models and improving R&D efficiency.

[0020] In one implementation, before calculating the curb mass front axle load of the equivalent center of mass of the curb mass module at the first vehicle wheelbase based on the association relationship between each part in the curb mass module and the vehicle wheelbase, the method further includes:

[0021] According to the assembly relationship, it is determined whether each part in the curb mass module has a strong correlation with the front axle and the rear axle, and the first part group, the second part group and the third part group are obtained; wherein the first part group includes the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake, and the front steering knuckle, and the second part group includes the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension; the remaining parts in the curb mass module are used as the third part group;

[0022] 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 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 expressed as:

[0023]

[0024] Wherein, X is the distance from the equivalent center of mass of the parts group to the front axle; 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; g is the total mass of the parts in the part group.

[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 between each part in the curb weight module and the front and rear axles. This ensures that the physical position and function of key parts are taken into account during 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 one implementation, generating the occupant mass front axle load of the occupant mass module under the first vehicle wheelbase according to the distance from the occupant mass center to the front wheel center specifically includes:

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

[0028]

[0029] In the formula, G f3 is the front axle load of the passenger mass; 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 occupant's sitting reference point of the jth seat to the center of the front wheel; G3 is the occupant's mass.

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

[0031] In one implementation, generating the rated load front axle load of the rated load module at the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel specifically includes:

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

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

[0034]

[0035] In the formula, G f4 is the front axle load with rated 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 center of the trunk to the center of the front wheel; G4 is the rated load of the target vehicle model.

[0036] In the above scheme, by introducing the front axle distance adjustment and the rear axle distance adjustment, it can flexibly adapt to the change of wheelbase, ensuring that the calculation result accurately reflects the impact of wheelbase adjustment on the front axle load of rated load. The calculation of the front axle load of rated load is independent of other modules (such as curb weight and passenger mass), which simplifies the calculation process and can quickly support the rapid iteration of new models and the optimization selection of chassis parts to meet the rapidly changing needs of the automotive market.

[0037] In a second aspect, the present application further provides a vehicle axle load generating 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 the 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;

[0039] The first axle load module is used to calculate the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the correlation relationship between each part in the curb 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;

[0040] The second axle load module is used to generate the occupant mass front axle load of the occupant mass module under the first vehicle wheelbase according to the distance from the occupant mass center to the front wheel center;

[0041] The third axle load module is used to generate the rated load front axle load of the rated load module under the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel;

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

[0043] In the above scheme, the vehicle mass is divided into a curb mass module, a passenger mass module and a rated load module, and the complex vehicle mass distribution problem is decomposed into multiple independent modules, which simplifies the calculation process and reduces the amount of calculation. Based on the correlation between each part in the curb mass module and the wheelbase of the vehicle, the front axle load from 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 of the vehicle to ensure 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 point of the trunk to the center of the front wheel, the front axle load of the passenger mass and rated load module under the first wheelbase of the vehicle is generated. Through modular processing and adjustment of key parameters, it can quickly adapt to wheelbase changes and accurately calculate the vehicle axle load. 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 models and the rapid selection of chassis parts, and meet the rapidly changing competition needs of the automobile market.

[0044] In one implementation, the calculating of the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the association between each part in the curb mass module and the vehicle wheelbase specifically includes:

[0045] The parts in the curb mass module are divided into a first part group, a second part group and a third part group according to the association relationship between each part and the front and rear axles; wherein the first part group is a combination of parts strongly associated with the front axle, the second part group is a combination of parts strongly associated with the rear axle; the third part group is the remaining parts in the curb mass module except the first part group and the second part group;

[0046] The initial curb weight front axle load from the equivalent center of mass of each part group to the wheelbase of the vehicle is generated according to the center of mass of each part in each part group; wherein the expression of the initial curb weight front axle load is:

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

[0048] The adjustment amount of the wheelbase of the whole vehicle is obtained, and the front axle load of the curb weight of each component group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load of the curb weight is:

[0049]

[0050] Where d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle.

[0051] In one implementation, before calculating the curb mass front axle load of the equivalent center of mass of the curb mass module at the first vehicle wheelbase based on the association relationship between each part in the curb mass module and the vehicle wheelbase, the method further includes:

[0052] According to the assembly relationship, it is determined whether each part in the curb mass module has a strong correlation with the front axle and the rear axle, and the first part group, the second part group and the third part group are obtained; wherein the first part group includes the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake, and the front steering knuckle, and the second part group includes the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension; the remaining parts in the curb mass module are used as the third part group;

[0053] 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 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 expressed as:

[0054]

[0055] Wherein, X is the distance from the equivalent center of mass of the parts group to the front axle; 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; g is the total mass of the parts in the part group.

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

[0057]

[0058] In the formula, G f3 is the front axle load of the passenger mass; 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 occupant's sitting reference point of the jth seat to the center of the front wheel; G3 is the occupant's mass.

[0059] In one implementation, the third axle load module is used to generate the rated load front axle load of the rated load module under the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel, specifically including:

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

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

[0062]

[0063] In the formula, G f4 is the front axle load with rated 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 center of the trunk to the center of the front wheel; G4 is the rated load of the target vehicle model.

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

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

[0066] Figure 1A schematic diagram of a flow chart of a method for generating axle load of a whole vehicle provided in one embodiment of the present invention;

[0067] Figure 2 The present invention is a schematic diagram of a module of a vehicle axle load generating device provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0068] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0069] The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0070] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0071] Example 1

[0072] See also Figure 1 , Figure 1 The flowchart of a vehicle axle load generation method provided in an embodiment of the present invention is as follows. The present invention provides a vehicle axle load generation method, including steps 101 to 105, each of which is as follows:

[0073] Step 101: Obtain the vehicle mass of the 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 invention, the vehicle mass is divided into three modules: curb mass, passenger mass and rated load mass, which are determined based on the vehicle's own reference mass, the actual mass of the passenger and the rated load capacity of the vehicle. Curb mass refers to the reference mass of the vehicle when it is not carrying any additional load (such as passengers, cargo). It includes the standard configuration of the vehicle and the mass of conventional equipment. The standard configuration includes the weight of equipment such as the air conditioning system, audio system, dashboard, seats (excluding passengers); conventional equipment includes the mass of basic components such as the body structure, engine, transmission, suspension system, tires, fuel tank (full of fuel), coolant, lubricant, battery, etc.; passenger mass refers to the total mass of the driver and passengers of the vehicle, which is usually estimated according to the standardized mass. For example, the standard mass of 75kg per person (including carry-on luggage) is often used internationally. In vehicle design, the passenger mass is usually calculated based on the rated number of passengers of the vehicle (such as 5 seats, 7 seats); the rated load mass refers to the maximum cargo or load mass allowed to be carried by the vehicle during design and manufacture, usually excluding the passenger mass, that is, the maximum allowable total mass minus the curb mass and the mass of the quasi-passenger in the cab. The rated load is determined based on factors such as the vehicle's chassis strength, suspension system, tire load capacity, and regulatory requirements. Dividing the vehicle's mass into curb weight, passenger mass, and rated load helps to conduct modular analysis of different parts and optimize the vehicle's structural design and performance.

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

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

[0077] The parts in the curb mass module are divided into a first part group, a second part group and a third part group according to the association relationship between each part and the front and rear axles; wherein the first part group is a combination of parts strongly associated with the front axle, the second part group is a combination of parts strongly associated with the rear axle; the third part group is the remaining parts in the curb mass module except the first part group and the second part group;

[0078] The initial curb weight front axle load from the equivalent center of mass of each part group to the wheelbase of the vehicle is generated according to the center of mass of each part in each part group; wherein the expression of the initial curb weight front axle load is:

[0079]

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

[0081] The adjustment amount of the wheelbase of the whole vehicle is obtained, and the front axle load of the curb weight of each component group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load of the curb weight is:

[0082]

[0083] Where d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle.

[0084] In the embodiment of the present invention, the parts in the first part group that are strongly associated with the front axle refer to those parts that are directly related to the front axle in mechanics, and whose positions and weights have a greater impact on the front axle load; the parts in the second part group that are strongly associated with the rear axle refer to those parts that are directly related to the rear axle in mechanics, and whose positions and weights have a greater impact on the rear axle load; the third group of parts refers to those parts that are less related to the front and rear axles, or that are difficult to be clearly classified into the first group or the second group in terms of assembly relationship. The equivalent center of mass position of each part group is generated according to the center of mass of each part in each part group, and the initial curb weight front axle load is calculated, the adjustment amount of the wheelbase of the whole vehicle is obtained, and the curb weight front axle load of each part group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount. The curb weight front axle load is directly calculated through the equivalent center of mass position, avoiding complex mechanical analysis. The curb weight module can be calculated independently, which is convenient for use in combination with other modules (such as passenger weight module and rated load module), and is suitable for models with different part arrangements, and the calculation results can be quickly adjusted to adapt to design changes.

[0085] In one embodiment, the front axle load of the curb mass of the equivalent center of mass of the curb mass module at the first wheelbase of the vehicle is calculated based on the association between each part in the curb mass module and the wheelbase of the vehicle, further comprising:

[0086] According to the assembly relationship, it is determined whether each part in the curb mass module has a strong correlation with the front axle and the rear axle, and the first part group, the second part group and the third part group are obtained; wherein the first part group includes the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake, and the front steering knuckle, and the second part group includes the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension; the remaining parts in the curb mass module are used as the third part group;

[0087] 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 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 expressed as:

[0088]

[0089] Wherein, X is the distance from the equivalent center of mass of the parts group to the front axle; 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; g is the total mass of the parts in the part group.

[0090] In the embodiment of the present invention, the first parts group includes parts such as the front wheel, steering system, front subframe, swing arm, front suspension, front brake, and front steering knuckle. Specifically, the front wheel includes a tire and a wheel hub; the steering system includes a steering gear, 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 the swing arm part of the front suspension; the front suspension is the front suspension system, including springs, shock absorbers, etc.; the front brake is the front brake system, including brake discs, brake pads, brake calipers, etc.; the front steering is the steering knuckle part of the front axle. Furthermore, the first parts group also includes parts such as the front bumper, front grille, and front headlights that are strongly associated with the front axle. The second parts group includes the rear wheel, rear brake, rear subframe, rear axle, swing arm, rear steering knuckle, and rear suspension. Specifically, the rear wheel includes tires and wheels; the rear brake is the rear brake system, including brake discs, brake pads, brake calipers, etc.; the rear subframe includes the rear subframe assembly and its accessories; the rear axle is the rear axle assembly, including differentials, drive shafts, etc.; the swing arm is the swing arm part of the rear suspension; the rear steering is the steering knuckle part of the rear axle (if any); the rear suspension is the rear suspension system, including springs, shock absorbers, etc. Further, the second parts group also includes parts that are strongly related to the rear axle, such as the rear bumper and the trunk floor. The third parts group includes body structure parts, interior parts, power system, electrical system, auxiliary system and other accessories. Specifically, the body structure parts include body shell, roof, doors, etc.; interior parts include seats (excluding passengers), dashboards, carpets, linings, etc.; the power system includes engine, transmission, fuel tank (full of fuel), cooling system, etc.; the electrical system includes batteries, generators, wiring harnesses, etc.; the auxiliary system includes air conditioning system, audio system, navigation system, etc.; other accessories include spare tires, tool boxes, luggage racks, etc.

[0091] After the parts group is divided, 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 part group to the center of the front wheel. By dividing the parts in the maintenance module into different groups, it is convenient to calculate the equivalent center of mass position of each group of parts independently. It is suitable for models with different parts layouts and can quickly adjust the calculation results 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: Generate the occupant mass front axle load of the occupant mass module under the first vehicle wheelbase according to the distance from the occupant mass center to the front wheel center.

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

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

[0095]

[0096] In the formula, G f3 is the front axle load of the passenger mass; 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 occupant's sitting reference point of the jth seat to the center of the front wheel; G3 is the occupant's mass.

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

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

[0099] In one embodiment, generating the rated load front axle load of the rated load module at the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel specifically includes:

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

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

[0102]

[0103] In the formula, G f4is the front axle load with rated 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 center of the trunk to the center of the front wheel; G4 is the rated load of the target vehicle model.

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

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

[0106] In the embodiment of the present invention, the total mass of the vehicle is transferred to the ground through the front and rear axles. The axle load of the whole vehicle can be obtained by accumulating the front axle loads of each mass module. That is, the axle load of the whole vehicle G f =G f2 +G f3 +G f4 By combining the front axle load of the curb weight, the front axle load of the passenger weight and the front axle load of the rated load, the vehicle axle load of the target vehicle model can be generated. This method can fully consider the impact of different mass modules of the vehicle on the axle load and provide accurate data support for vehicle design and performance evaluation.

[0107] For example, the wheelbase of a certain vehicle is adjusted from 3300 to 3550, and the calculation method based on the fixed wheelbase in the prior art, the calculation method based on the vehicle model matrix, and the vehicle axle load generation method provided by the present invention are used to calculate the front axle load of the curb weight after the wheelbase is updated. If the calculation method based on the fixed wheelbase is used, the center of mass of each part needs to be updated one by one, and the axle load calculation accuracy is high, but the data update range is large (involving more than 100 subsystems and more than 1,000 parts). In order to avoid mistakes, multiple checks are required, which takes nearly 2 to 3 hours. The front axle load after conversion is 820.78kg; if the calculation method based on the vehicle model matrix is ​​used, the center of mass of the vehicle is approximately unchanged for rapid estimation, and only the original curb weight and wheelbase changes are counted. It takes 2 minutes and the front axle load is calculated to be 844.56kg, but the estimated value differs from the result obtained by the calculation method based on the fixed wheelbase by 23.78kg. Its low accuracy affects the design of downstream areas. By adopting the vehicle axle load generation method provided by the embodiment of the present invention, the trim modules are grouped, and only the weight and the curb weight and wheelbase changes of each group of parts need to be counted. It takes about 5 minutes to calculate the front axle load of 823.2kg, but the estimated value is only 2.42kg different from the result obtained by the calculation method based on a fixed wheelbase, and the error is small, and the calculation efficiency is improved.

[0108] In an embodiment of the present invention, a vehicle axle load generation device is also provided, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the above-mentioned vehicle axle load generation method is implemented.

[0109] In an embodiment of the present invention, a computer-readable storage medium is also provided, and the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned vehicle axle load generation method.

[0110] Exemplarily, the computer program may be divided into one or more modules, one or more modules are stored in a memory and executed by a processor to complete the present invention. One or more modules may be a series of computer program instruction segments capable of completing a certain function, and the instruction segments are used to describe the execution process of the computer program in the vehicle axle load generation device.

[0111] The vehicle axle load generating device may be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The vehicle axle load generating device may include, but is not limited to, a processor, a memory, and a display. Those skilled in the art will appreciate that the above components are merely examples of the vehicle axle load generating device and do not constitute a limitation on the vehicle axle load generating device. The vehicle axle load generating device may include more or fewer components than the components, or a combination of certain components, or different components. For example, the vehicle axle load generating device may also include input and output devices, network access devices, buses, and the like.

[0112] The processor may be a central processing unit (CPU), 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 may be a microprocessor or any conventional processor, etc. The processor is the control center of the vehicle axle load generating device, and uses various interfaces and lines to connect the various parts of the vehicle axle load generating device.

[0113] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the vehicle axle load generating 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, an application required for at least one function (such as a sound playback function, a text conversion function, etc.), etc.; 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, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (FlashCard), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0114] Among them, if the module based on the generation of the axle load of the whole vehicle is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0115] The embodiment of the present invention provides a method for generating axle load of a whole vehicle, which divides the mass of the whole vehicle into a curb mass module, a passenger mass module and a rated load module, decomposes the complex mass distribution problem of the whole vehicle into multiple independent modules, simplifies the calculation process, and reduces the amount of calculation. Based on the correlation between each part in the curb mass module and the wheelbase of the whole vehicle, the front axle load from the equivalent center of mass of the curb mass module to the first wheelbase of the whole vehicle is calculated. This process takes into account the influence of the wheelbase of the whole vehicle, ensuring that the change of the center of mass position can be accurately reflected when the wheelbase changes. Then, according to the distance from the center of mass of the passenger and the center point of the trunk to the center of the front wheel, the front axle load of the passenger mass and rated load module under the first wheelbase of the whole vehicle is generated. Through modular processing and adjustment of key parameters, it is possible to quickly adapt to wheelbase changes and accurately calculate the axle load of the whole vehicle. 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 models and the rapid selection of chassis parts, and meet the rapidly changing competition needs of the automobile market.

[0116] Example 2

[0117] See also Figure 2 , Figure 2 The module diagram of a vehicle axle load generation device provided in an embodiment of the present invention is shown in FIG. The vehicle axle load generation device provided in an embodiment of the present invention 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 the 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;

[0119] The first axle load module 202 is used to calculate the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the correlation relationship between each part in the curb 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;

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

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

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

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

[0124] The initial curb weight front axle load from the equivalent center of mass of each part group to the wheelbase of the vehicle is generated according to the center of mass of each part in each part group; wherein the expression of the initial curb weight front axle load is:

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

[0126] The adjustment amount of the wheelbase of the whole vehicle is obtained, and the front axle load of the curb weight of each component group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load of the curb weight is:

[0127]

[0128] Where d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle.

[0129] In one embodiment, the front axle load of the curb mass of the equivalent center of mass of the curb mass module at the first wheelbase of the vehicle is calculated based on the association between each part in the curb mass module and the wheelbase of the vehicle, further comprising:

[0130] According to the assembly relationship, it is determined whether each part in the curb mass module has a strong correlation with the front axle and the rear axle, and the first part group, the second part group and the third part group are obtained; wherein the first part group includes the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake, and the front steering knuckle, and the second part group includes the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension; the remaining parts in the curb mass module are used as the third part group;

[0131] 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 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 expressed as:

[0132]

[0133] Wherein, X is the distance from the equivalent center of mass of the parts group to the front axle; 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; g is the total mass of the parts in the part group.

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

[0135]

[0136] In the formula, G f3 is the front axle load of the passenger mass; 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 occupant's sitting reference point of the jth seat to the center of the front wheel; G3 is the occupant's mass.

[0137] In one embodiment, the third axle load module 204 is used to generate the rated load front axle load of the rated load module under the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel, specifically including:

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

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

[0140]

[0141] In the formula, G f4 is the front axle load with rated 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 center of the trunk to the center of the front wheel; G4 is the rated load 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 aforementioned method embodiment, and will not be repeated here.

[0143] The embodiment of the present invention provides a vehicle axle load generation device, which divides the vehicle mass into a curb mass module, a passenger mass module and a rated load module, decomposes the complex vehicle mass distribution problem into multiple independent modules, simplifies the calculation process, and reduces the amount of calculation. Based on the correlation between each part in the curb mass module and the wheelbase of the vehicle, the front axle load from the equivalent center of mass of the curb mass module to the first vehicle wheelbase is calculated. This process takes into account the influence of the wheelbase of the vehicle to ensure 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 point of the trunk to the center of the front wheel, the front axle load of the passenger mass and rated load module under the first vehicle wheelbase is generated. Through modular processing and adjustment of key parameters, it is possible to quickly adapt to wheelbase changes and accurately calculate the vehicle axle load. 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 models and the rapid selection of chassis parts, and meet the rapidly changing competition needs of the automobile market.

[0144] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for generating axle load of a whole vehicle, characterized in that: include: Obtaining the vehicle mass of the target vehicle model, and dividing 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; Based on the correlation between each part in the curb mass module and the wheelbase of the vehicle, the curb mass front axle load of the equivalent center of mass of the curb mass module under the first wheelbase of the vehicle is calculated; wherein the wheelbase of the vehicle includes the front axle and the rear axle; the first wheelbase of the vehicle is the adjusted wheelbase of the vehicle; Generating the occupant mass front axle load of the occupant mass module under the first vehicle wheelbase according to the distance from the occupant mass center to the front wheel center; Generate a rated load front axle load of the rated load module under the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel; The vehicle axle load of the target vehicle model is generated according to the curb mass front axle load, the passenger mass front axle load and the rated load front axle load.

2. A vehicle axle load generation method as claimed in claim 1, characterized in that: The calculating the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the correlation between each part in the curb mass module and the vehicle wheelbase specifically includes: The parts in the curb mass module are divided into a first part group, a second part group and a third part group according to the association relationship between each part and the front and rear axles; wherein the first part group is a combination of parts strongly associated with the front axle, the second part group is a combination of parts strongly associated with the rear axle; the third part group is the remaining parts in the curb mass module except the first part group and the second part group; The initial curb weight front axle load from the equivalent center of mass of each part group to the wheelbase of the vehicle is generated according to the center of mass of each part in each part group; wherein the expression of the initial curb weight front axle load is: In the formula, G f1 is the front axle load of the initial curb weight; D is the wheelbase of the vehicle; X1 is the distance from the equivalent center of mass of the parts of the first parts group to the front axle; g1 is the total mass of the parts of the first parts group; X2 is the distance from the equivalent center of mass of the parts of the second parts group to the front axle; g2 is the total mass of the parts of the second parts group; X3 is the distance from the equivalent center of mass of the parts of the third parts group to the front axle; g3 is the total mass of the parts of the third parts group; The adjustment amount of the wheelbase of the whole vehicle is obtained, and the front axle load of the curb weight of each component group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load of the curb weight is: Where d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle.

3. A vehicle axle load generation method as claimed in claim 2, characterized in that: Calculating the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the association relationship between each part in the curb mass module and the vehicle wheelbase, further comprising: According to the assembly relationship, it is determined whether each part in the curb mass module has a strong correlation with the front axle and the rear axle, and the first part group, the second part group and the third part group are obtained; wherein the first part group includes the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake, and the front steering knuckle, and the second part group includes the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension; the remaining parts in the curb mass module are used as the third part group; 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 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 expressed as: Wherein, X is the distance from the equivalent center of mass of the parts group to the front axle; 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; g is the total mass of the parts in the part group.

4. A vehicle axle load generation method as claimed in claim 1, characterized in that: Generating the occupant mass front axle load of the occupant mass module under the first vehicle wheelbase according to the distance from the occupant mass center to the front wheel center specifically includes: The number of seats in the target vehicle model is obtained, and the occupant mass front axle load is generated based on the distance from the occupant sitting reference point of each seat to the front wheel center; wherein the occupant sitting reference point of the seat is the occupant mass center, and the expression of the occupant 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 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 occupant's sitting reference point of the jth seat to the center of the front wheel; G3 is the occupant's mass.

5. A vehicle axle load generation method as claimed in claim 1, characterized in that: Generating the rated load front axle load of the rated load module under the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel specifically includes: Obtaining the distance from the center of the trunk to the center of the front wheel of the target vehicle model; The rated load front axle load of the rated load module under the first vehicle wheelbase is generated according to the distance; wherein the expression of the rated load front axle load is: In the formula, G f4 is the front axle load with rated 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 center of the trunk to the center of the front wheel; G4 is the rated load of the target vehicle model.

6. A vehicle axle load generating device, characterized in that: include: Mass division module, first axle load module, second axle load module, third axle load module and vehicle axle load module; The mass division module is used to obtain the vehicle mass of the 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; The first axle load module is used to calculate the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the correlation relationship between each part in the curb 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 occupant mass front axle load of the occupant mass module under the first vehicle wheelbase according to the distance from the occupant mass center to the front wheel center; The third axle load module is used to generate the rated load front axle load of the rated load module under the first vehicle wheelbase according to the distance from the center point of the trunk to the center of the front wheel; The vehicle axle load module is used to generate the vehicle axle load of the target vehicle model according to the curb mass front axle load, the passenger mass front axle load and the rated load front axle load.

7. A vehicle axle load generating device as claimed in claim 6, characterized in that: The first axle load module is used to calculate the curb mass front axle load of the equivalent mass center of the curb mass module at the first vehicle wheelbase based on the association relationship between each part in the curb mass module and the vehicle wheelbase, specifically including: The parts in the curb mass module are divided into a first part group, a second part group and a third part group according to the association relationship between each part and the front and rear axles; wherein the first part group is a combination of parts strongly associated with the front axle, the second part group is a combination of parts strongly associated with the rear axle; the third part group is the remaining parts in the curb mass module except the first part group and the second part group; The initial curb weight front axle load from the equivalent center of mass of each part group to the wheelbase of the vehicle is generated according to the center of mass of each part in each part group; wherein the expression of the initial curb weight front axle load is In the formula, G f1 is the front axle load of the initial curb weight; D is the wheelbase of the vehicle; X1 is the distance from the equivalent center of mass of the parts of the first parts group to the front axle; g1 is the total mass of the parts of the first parts group; X2 is the distance from the equivalent center of mass of the parts of the second parts group to the front axle; g2 is the total mass of the parts of the second parts group; X3 is the distance from the equivalent center of mass of the parts of the third parts group to the front axle; g3 is the total mass of the parts of the third parts group; The adjustment amount of the wheelbase of the whole vehicle is obtained, and the front axle load of the curb weight of each component group to the wheelbase of the whole vehicle is recalculated based on the adjustment amount; wherein the expression of the front axle load of the curb weight is: Where d1 is the distance adjustment of the front axle; d2 is the distance adjustment of the rear axle.

8. The vehicle axle load generating device according to claim 6, characterized in that: Before calculating the equivalent center of mass of the curb mass module under the curb mass front axle load of the first vehicle wheelbase based on the association relationship between each part in the curb mass module and the vehicle wheelbase, the method further includes: According to the assembly relationship, it is determined whether each part in the curb mass module has a strong correlation with the front axle and the rear axle, and the first part group, the second part group and the third part group are obtained; wherein the first part group includes the front wheel, the steering system, the front subframe, the swing arm, the front suspension, the front brake, and the front steering knuckle, and the second part group includes the rear wheel, the rear brake, the rear subframe, the rear axle, the swing arm, the rear steering knuckle and the rear suspension; the remaining parts in the curb mass module are used as the third part group; 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 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 expressed as: Wherein, X is the distance from the equivalent center of mass of the parts group to the front axle; 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; g is the total mass of the parts in the part group.

9. A terminal device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the method for generating axle load of a whole vehicle as described in any one of claims 1 to 5 is implemented.

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

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