CN117825068A

CN117825068A - Vehicle chassis adjustment method, device, equipment and storage medium

Info

Publication number: CN117825068A
Application number: CN202410007835.3A
Authority: CN
Inventors: 郝新
Original assignee: Jidu Technology Wuhan Co ltd
Current assignee: Jidu Technology Wuhan Co ltd
Priority date: 2024-01-02
Filing date: 2024-01-02
Publication date: 2024-04-05

Abstract

The invention provides a vehicle chassis adjusting method, device, equipment and storage medium, wherein a stress simulation test can be carried out on a vehicle chassis through a simulation chassis model of the vehicle chassis to obtain the moving distance of the vehicle chassis under the action of external force, the moving distance and the chassis weight of the vehicle chassis are used for determining the current chassis rigidity of the vehicle chassis, so that the current chassis rigidity and the set rigidity interval of the vehicle chassis are used as guidance and reference in the adjusting process of the current part parameters of each chassis structural member, the current part parameters of each chassis structural member are adjusted to obtain the adjusted part parameters of each chassis structural member after the adjustment, the complexity of adjusting the current part parameters of the chassis structural members is greatly reduced until the vehicle chassis after the adjustment for many times meets the preset condition, the adjustment of the vehicle chassis is stopped, the adjustment of the vehicle chassis is facilitated to be purposefully adjusted, and the accuracy and the effectiveness of the adjustment of the vehicle chassis are improved.

Description

Vehicle chassis adjustment method, device, equipment and storage medium

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a vehicle chassis adjustment method, a device, equipment and a storage medium.

Background

The rigidity of the chassis structural member of the vehicle is closely related to fatigue durability, handling stability, noise, vibration and harshness (Noise, vibration, harshness, NVH) characteristics of the vehicle, and the like, and a rigidity target value of the chassis structural member needs to be defined in the early development process of the vehicle.

In order to determine the rigidity target value of each chassis structural member, the rigidity target value of the chassis structural member on the target vehicle of the similar vehicle type which is already developed is mostly directly used, however, since the development vehicle and the target vehicle are not completely the same in terms of arrangement, motor development capability and the like, if the rigidity target value of the chassis structural member of the target vehicle is directly used, the chassis rigidity of the vehicle may not meet the development requirement, at this time, the component parameters of the chassis structural member need to be adjusted, and because the component parameters of each chassis structural member are individually defined, the adjustment process of the component parameters of each chassis structural member is extremely difficult, consumes long time, and also needs to input more manpower and material resources, and the resource consumption is high.

Disclosure of Invention

The embodiment of the disclosure at least provides a vehicle chassis adjustment method, device, equipment and storage medium.

An embodiment of the present disclosure provides a vehicle chassis adjustment method, including:

obtaining a simulation chassis model of a vehicle chassis, wherein the simulation chassis model is obtained through simulation modeling of current part parameters of each chassis structural member in the vehicle chassis;

carrying out stress simulation test on the vehicle chassis through the simulation chassis model to obtain the moving distance of the vehicle chassis under the action of external force;

determining a current chassis stiffness of the vehicle chassis using the travel distance and a chassis weight of the vehicle chassis;

and adjusting the current part parameters of each chassis structural member based on the current chassis rigidity and the set rigidity interval of the vehicle chassis to obtain the adjusted part parameters of each chassis structural member after the current adjustment until the vehicle chassis meets the preset condition after the adjustment for a plurality of times, and stopping adjusting the vehicle chassis.

In an alternative embodiment, the vehicle chassis is determined to meet a preset condition by:

After current part parameters of each chassis structural member are adjusted for multiple times to obtain adjusted part parameters, if the target chassis stiffness of the vehicle chassis is positioned in the set stiffness interval under each adjusted part parameter obtained after the first target adjustment, the performance of the vehicle chassis meets the vehicle performance requirement, and the target weight of the vehicle chassis is the minimum value in the weight of the vehicle chassis after each adjustment, and the vehicle chassis is determined to meet the preset condition;

and under the parameters of all the parts after adjustment obtained after the first target adjustment, if the target chassis rigidity of the vehicle chassis is within the set rigidity interval, the performance of the vehicle chassis accords with the chassis rigidity requirement.

In an alternative embodiment, the method further comprises:

and respectively taking the adjusted part parameters obtained after the first target adjustment as final part parameters which can be used by the corresponding chassis structural member after the adjustment of the vehicle chassis.

In an alternative embodiment, the current part parameters are determined by:

Under the condition of first adjustment of the vehicle chassis, acquiring initial part parameters of the chassis structural member, and taking the initial part parameters as current part parameters required for first adjustment;

under the condition that the vehicle chassis is not adjusted for the first time, the adjusted part parameters obtained by the last adjustment are used as current part parameters required by the current adjustment;

the initial part parameters are part parameters of a chassis structural member in a vehicle set by a user or part parameters of the chassis structural member obtained from a known vehicle of the same type as the vehicle.

In an alternative embodiment, the set stiffness interval is determined by:

when the adjustment is performed for the first time, under the condition that part parameters of a chassis structural member in the vehicle, which are set by a user, an input stiffness interval set by the user is used as the set stiffness interval, wherein the input stiffness interval is an input stiffness interval when the user designs the vehicle; or alternatively

And under the condition that part parameters of a chassis structural member of a known vehicle are used when the adjustment is performed for the first time, acquiring the current chassis rigidity of the vehicle chassis determined in the adjustment process for the first time, and determining the set rigidity interval through the current chassis rigidity and a preset rigidity adjustment proportion.

In an alternative embodiment, before the stress simulation test is performed on the vehicle chassis through the simulation chassis model to obtain the moving distance of the vehicle chassis under the action of external force, the method further includes:

constraint processing is carried out on the target interface point on the simulation chassis model;

the target interface point comprises a connection point with a vehicle body on the simulated chassis model and/or a connection point between structural component models corresponding to the chassis structural components;

the constraint process includes at least one of a degree of freedom constraint, a movement direction constraint, and a rotation direction constraint.

In an optional implementation manner, the adjusting the current part parameter of each chassis structural member based on the current chassis stiffness and the set stiffness interval of the vehicle chassis to obtain the adjusted part parameter of each chassis structural member after the current adjustment includes:

the adjusting weight of the chassis structural member relative to the current chassis rigidity is obtained after the sensitivity detection is carried out on the chassis structural member;

determining the adjustment sequence and the adjustment strength of a plurality of chassis structural members based on the adjustment weights corresponding to the chassis structural members;

And respectively adjusting the current part parameters of each chassis structural member according to the adjustment sequence and the adjustment strength of each chassis structural member to obtain the adjusted part parameters of each chassis structural member after the adjustment.

In an optional implementation manner, the performing, by using the simulated chassis model, a stress simulation test on the vehicle chassis to obtain a moving distance of the vehicle chassis under the action of an external force, includes:

applying a target force to the simulated chassis model according to a target direction and a target position, wherein the target direction comprises at least one of a transverse direction of the simulated chassis model and a longitudinal direction of the simulated chassis model, and the target position comprises at least one of a target structural member for controlling movement of a front wheel of the simulated chassis model and a target structural member for controlling movement of a rear wheel of the simulated chassis model;

detecting the moving distance of the simulated chassis model moving along the direction of the target force after moving under the target force.

In an alternative embodiment, the determining the current chassis stiffness of the vehicle chassis using the travel distance and the chassis weight of the vehicle chassis includes:

Determining a ground point stiffness of the vehicle chassis based on the target force applied in the force simulation test and the movement distance;

normalizing the grounding point rigidity through the chassis weight of the vehicle chassis to obtain the normalized grounding point rigidity;

and determining the normalized grounding point rigidity as the current chassis rigidity of the vehicle chassis.

The embodiment of the disclosure also provides a vehicle chassis adjustment device, which comprises:

the model acquisition module is used for acquiring a simulated chassis model of the vehicle chassis, wherein the simulated chassis model is obtained through current part parameter simulation modeling of each chassis structural member in the vehicle chassis;

the distance determining module is used for carrying out stress simulation test on the vehicle chassis through the simulation chassis model to obtain the moving distance of the vehicle chassis under the action of external force;

a stiffness determination module for determining a current chassis stiffness of the vehicle chassis using the travel distance and a chassis weight of the vehicle chassis;

and the parameter adjustment module is used for adjusting the current part parameters of each chassis structural member based on the current chassis rigidity and the set rigidity interval of the vehicle chassis to obtain the adjusted part parameters of each chassis structural member after the current adjustment until the vehicle chassis meets the preset condition after the adjustment for a plurality of times, and stopping the adjustment of the vehicle chassis.

In an alternative embodiment, the parameter adjustment module determines that the vehicle chassis meets a preset condition by:

In an alternative embodiment, the apparatus further comprises a parameter determination module for:

In an alternative embodiment, the model acquisition module and the parameter adjustment module determine the current part parameters by:

In an alternative embodiment, the parameter adjustment module determines the set stiffness interval by:

In an alternative embodiment, the apparatus further comprises a model constraint module for:

In an optional implementation manner, the parameter adjustment module is configured to, when being configured to adjust the current part parameter of each chassis structural member based on the current chassis stiffness and the set stiffness interval of the vehicle chassis, obtain the adjusted part parameter of each chassis structural member after the current adjustment, specifically be:

In an alternative embodiment, the distance determining module is specifically configured to:

In an alternative embodiment, the stiffness determination module is specifically configured to:

The embodiment of the disclosure also provides an electronic device, including: a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, the processor and the memory in communication over the bus when the electronic device is running, the machine readable instructions when executed by the processor performing the steps of the vehicle chassis alignment method described above, or any of the possible embodiments of the vehicle chassis alignment method described above.

The disclosed embodiments also provide a computer readable storage medium having a computer program stored thereon, which when executed by a processor performs the steps of the vehicle chassis adjustment method described above, or any one of the possible implementation manners of the vehicle chassis adjustment method described above.

According to the vehicle chassis adjusting method, device, equipment and storage medium, the simulation chassis model of the vehicle chassis can be obtained, the vehicle chassis is subjected to stress simulation test through the simulation chassis model, the moving distance of the vehicle chassis under the action of external force is obtained, the current chassis rigidity of the vehicle chassis is determined by using the moving distance and the chassis weight of the vehicle chassis, the current chassis rigidity and the set rigidity interval of the vehicle chassis are used as guidance and reference in the adjusting process of the current part parameters of each chassis structural member, the current part parameters of each chassis structural member are adjusted, the adjusted part parameters of each chassis structural member are obtained, the complexity of adjusting the current part parameters of the chassis structural members is greatly reduced until the vehicle chassis after multiple times of adjustment meets preset conditions, adjustment of the vehicle chassis is stopped, the current chassis rigidity and the set rigidity interval of the vehicle chassis have macroscopic guiding effect on the adjustment of the current part parameters of each chassis structural member, the adjustment of the vehicle chassis is facilitated, investment of manpower and material resources is reduced, and the accuracy and effectiveness of vehicle chassis adjustment are effectively improved.

Furthermore, the embodiment of the disclosure can greatly improve the adjustment effect of the vehicle chassis especially aiming at the situation that the rigidity is the adjustment bottleneck, thereby realizing weight reduction and light weight of the vehicle chassis, being beneficial to reducing the resource consumption of subsequent vehicle production and improving the running capability of the vehicle.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the aspects of the disclosure.

The foregoing objects, features and advantages of the disclosure will be more readily apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the embodiments are briefly described below, which are incorporated in and constitute a part of the specification, these drawings showing embodiments consistent with the present disclosure and together with the description serve to illustrate the technical solutions of the present disclosure. It is to be understood that the following drawings illustrate only certain embodiments of the present disclosure and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.

FIG. 1 illustrates a flow chart of a vehicle chassis adjustment method provided by an embodiment of the present disclosure;

FIG. 2 illustrates a flow chart of another vehicle chassis adjustment method provided by an embodiment of the present disclosure;

FIG. 3 illustrates a schematic diagram of a process for vehicle chassis tuning provided by an embodiment of the present disclosure;

FIG. 4 illustrates one of the schematic diagrams of a vehicle chassis adjustment device provided by an embodiment of the present disclosure;

FIG. 5 illustrates a second schematic diagram of a vehicle chassis adjustment device provided in an embodiment of the present disclosure;

fig. 6 shows a schematic structural diagram of an electronic device according to an embodiment of the disclosure.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. The components of the embodiments of the present disclosure, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of this disclosure without making any inventive effort, are intended to be within the scope of this disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The term "and/or" is used herein to describe only one relationship, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.

It is found that, in order to determine the rigidity target value of each chassis structural member, the rigidity target value of the chassis structural member on the target vehicle of the similar vehicle type which has been developed is mostly directly used, however, since the development vehicle and the target vehicle are not identical in terms of arrangement, motor development capability and the like, if the rigidity target value of the chassis structural member of the target vehicle is directly used, the rigidity of the chassis of the vehicle may not meet the development requirement, and at this time, the component parameters of the chassis structural member need to be adjusted. If the rigidity target value of a certain chassis structural member needs to be adjusted, the rigidity target values of other chassis structural members also need to be adjusted, and because the part parameters of each chassis structural member are independently defined and no overall guiding index is used for assisting adjustment, the adjustment process of the part parameters of each chassis structural member is extremely difficult, consumes long time, needs more manpower and material resources, and has high resource consumption.

Based on the above study, the present disclosure provides a vehicle chassis adjustment method, taking the current chassis stiffness and the set stiffness interval of the vehicle chassis as guidance and reference in the adjustment process of the current part parameters of each chassis structural member, adjusting the current part parameters of each chassis structural member to obtain the adjusted part parameters of each chassis structural member after the adjustment, greatly reducing the complexity of adjusting the current part parameters of the chassis structural member until the vehicle chassis after multiple adjustments meets the preset condition, stopping the adjustment of the vehicle chassis, wherein the current chassis stiffness and the set stiffness interval of the vehicle chassis have macroscopic guidance effect on the adjustment of the current part parameters of each chassis structural member, thereby being beneficial to pertinently adjusting the vehicle chassis, reducing the investment of manpower and material resources, and effectively improving the accuracy and the effectiveness of the adjustment of the vehicle chassis.

For the convenience of understanding the present embodiment, first, a method for adjusting a chassis of a vehicle disclosed in the embodiments of the present disclosure will be described in detail, and an execution body of the method for adjusting a chassis of a vehicle provided in the embodiments of the present disclosure may be a device for adjusting a chassis of a vehicle, or may be an electronic device with a certain computing capability. In this embodiment, the electronic device may be a server. The server may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud storage, big data, artificial intelligent platforms and the like.

In other embodiments, the electronic device may be a terminal device or other processing device, where the terminal device may be a User Equipment (UE), a mobile device, a User terminal, a computing device, and so on. Other processing devices may be devices including processors and memory, and are not limited in this regard. In some possible implementations, the vehicle chassis adjustment method may be implemented by way of a processor invoking computer readable instructions stored in a memory.

A method for adjusting a chassis of a vehicle according to an embodiment of the present disclosure will be described below with reference to the accompanying drawings.

Referring to fig. 1, a flowchart of a vehicle control method according to an embodiment of the present disclosure is shown in fig. 1, where the vehicle control method according to the embodiment of the present disclosure includes steps S101 to S104, where:

s101: and obtaining a simulated chassis model of the vehicle chassis, wherein the simulated chassis model is obtained through current part parameter simulation modeling of each chassis structural part in the vehicle chassis.

Herein, the vehicles corresponding to the chassis of the vehicle include, but are not limited to, cars, buses, trucks, tractors, and the like, which are not limited herein. Wherein, cars, buses, trucks, etc. may be collectively referred to as automobiles. In the present embodiment, an automobile will be described as an example.

The vehicle chassis is used for supporting and installing an automobile engine and various parts and assemblies thereof, forming the integral shape of the automobile, receiving the power of the engine, enabling the automobile to move and ensuring normal running, and is constructed by a plurality of chassis structural members.

Illustratively, the plurality of chassis structural members includes, but is not limited to, steering knuckles, links, shock absorbers, stabilizer bar assemblies, sub-frames, springs, roof supports, and the like.

The current part parameters of the chassis structural member comprise material parameters, connection modes, rigidity target values and the like of the chassis structural member.

Optionally, when the simulated chassis model is obtained by simulation modeling, material parameters of each chassis structural member and a connection mode between each chassis structural member can be determined from current part parameters of each chassis structural member in the vehicle chassis, then based on the material parameters of each chassis structural member, the structural member model corresponding to each chassis structural member is obtained by simulation modeling, and then the structural member model corresponding to each chassis structural member is connected according to the connection mode between each chassis structural member, so as to obtain the simulated chassis model.

The material parameters of the chassis structural member may specifically include a material, a thickness, a mass, a young modulus, a density ratio, and the like of the chassis structural member. The connection mode between the chassis structural members can specifically comprise rigid connection, spherical hinge connection and the like.

Optionally, when the structural member model corresponding to each chassis structural member is obtained based on the material parameters of each chassis structural member through simulation modeling, the structural member model corresponding to each chassis structural member can be obtained through simulation modeling according to the material parameters of each chassis structural member through mesh partitioning software hypermesh or ansa and the like.

In the embodiment of the disclosure, when the chassis of the vehicle is adjusted later, the current part parameters of each chassis structural member can be adjusted for multiple times, and in some possible embodiments, the current part parameters are determined by the following steps:

Alternatively, in order to improve vehicle development efficiency, in the case where there is a known vehicle of the same vehicle type as the vehicle, a part parameter of a chassis structural member obtained from the known vehicle of the same vehicle type as the vehicle may be taken as the initial part parameter.

Wherein the known vehicle is a vehicle which has been developed and verified to meet the dynamics requirements of vehicle travel and various performance requirements.

As a further alternative, the user-set part parameters of the chassis structure in the vehicle may be used as the initial part parameters in the case where there is no known vehicle of the same type as the vehicle, i.e. in the case where a vehicle of a completely new type is designed and developed.

Wherein the user is a development designer of the vehicle.

Therefore, in the process of adjusting the vehicle chassis, the current part parameters required to be used for each adjustment can be flexibly determined according to different development scenes, and the accuracy of the adjustment of the vehicle chassis is guaranteed.

S102: and carrying out stress simulation test on the vehicle chassis through the simulation chassis model to obtain the moving distance of the vehicle chassis under the action of external force.

In the step, after the simulated chassis model is obtained, a stress simulation test can be performed on the simulated chassis model to simulate the stress movement of the vehicle chassis, so as to obtain the movement distance of the vehicle chassis under the action of external force.

Specifically, a target force can be applied to the simulated chassis model according to a target direction and a target position, and a moving distance of the simulated chassis model moving in the target force direction is detected after the simulated chassis model moves under the target force.

Wherein the target direction includes at least one of a lateral direction along the simulated chassis model and a longitudinal direction along the simulated chassis model.

Wherein the target position includes at least one of a target structural member that is located on a front wheel that controls the simulated chassis model to move and a target structural member that controls a rear wheel of the simulated chassis model to move.

Alternatively, the target structural member controlling the movement of the front wheel of the simulated chassis model may be a rigid unit controlling the movement of the front wheel of the simulated chassis model.

Here, the target structural member for controlling the movement of the front wheel of the simulation chassis model and the target structural member for controlling the movement of the rear wheel of the simulation chassis model may be two target structural members belonging to the same side, for example, a target structural member for controlling the movement of the left front wheel of the simulation chassis model and a target structural member for controlling the movement of the left rear wheel of the simulation chassis model, or may be two target structural members belonging to two sides, for example, a target structural member for controlling the movement of the left front wheel of the simulation chassis model and a target structural member for controlling the movement of the right rear wheel of the simulation chassis model, respectively, which are not limited herein.

Therefore, after the target force is applied to the simulated chassis model, the moving distance of the simulated chassis model moving in the target force direction can be determined after the simulated chassis model moves under the target force, so that the moving distance of the vehicle chassis under the action of external force is determined, and convenience and accuracy of determining the moving distance are improved.

S103: determining a current chassis stiffness of the vehicle chassis using the travel distance and a chassis weight of the vehicle chassis.

In this step, the current chassis stiffness of the vehicle chassis may be determined by the movement distance, the chassis weight of the vehicle chassis, and the target force applied in the force simulation test.

Specifically, the ground point stiffness of the vehicle chassis may be determined based on the target force applied in the force simulation test and the movement distance; normalizing the grounding point rigidity through the chassis weight of the vehicle chassis to obtain the normalized grounding point rigidity; and determining the normalized grounding point rigidity as the current chassis rigidity of the vehicle chassis.

Here, the calculation formula for the ground point rigidity is shown as the following formula (1):

kStiffness＝F/D (1)

where kStiffness denotes the ground point stiffness, F denotes the target force, and D denotes the moving distance.

The calculation formula for the ground point rigidity after normalization processing is shown as the following formula (2):

TPS＝kStiffness/M (2)

where TPS represents ground point stiffness after normalization, kStiffness represents ground point stiffness, and M represents chassis weight.

Therefore, the grounding point rigidity of the vehicle chassis is determined based on the target force and the moving distance, the chassis weight of the vehicle chassis is subjected to normalization processing, the grounding point rigidity after the normalization processing is determined to be the current chassis rigidity of the vehicle chassis, and the accuracy of determining the current chassis rigidity is guaranteed.

In this embodiment, the stress simulation test is performed on the vehicle chassis by using the simulated chassis model, so that the chassis weight of the vehicle chassis is used to normalize the ground point rigidity. In other embodiments, a simulated vehicle model of a vehicle including the vehicle chassis may be further used, a force simulation test is performed on the vehicle through the simulated vehicle model to obtain a moving distance of the vehicle under the action of an external force, the moving distance is used as the moving distance of the vehicle chassis under the action of the external force, then, based on a target force applied in the force simulation test and the moving distance, the grounding point stiffness of the vehicle chassis is determined, normalization processing is performed on the grounding point stiffness through the servicing weight of the vehicle to obtain the grounding point stiffness after normalization processing, and the grounding point stiffness after normalization processing is determined as the current chassis stiffness of the vehicle chassis.

S104: and adjusting the current part parameters of each chassis structural member based on the current chassis rigidity and the set rigidity interval of the vehicle chassis to obtain the adjusted part parameters of each chassis structural member after the current adjustment until the vehicle chassis meets the preset condition after the adjustment for a plurality of times, and stopping adjusting the vehicle chassis.

In this step, when the current component parameters of each chassis structural member are adjusted, the stiffness target value of each chassis structural member may be specifically adjusted.

Illustratively, the adjustment of the stiffness target value of the chassis structural member may be achieved by adjusting the young's modulus of the chassis structural member, and the adjustment of the stiffness target value of the chassis structural member may also be achieved by adjusting other material parameters of the chassis structural member, which is not limited herein.

According to the above, when the chassis of the vehicle is first calibrated, the initial part parameter of the chassis structural member is obtained, and the initial part parameter is used as the current part parameter required for the first calibration.

And under the condition that the vehicle chassis is not adjusted for the first time, taking the adjusted part parameters obtained by the last adjustment as the current part parameters required to be used for the current adjustment.

Correspondingly, the manner of determining the set stiffness interval is also different for different initial part parameters.

Specifically, the set stiffness interval may be determined by:

Alternatively, in the case of designing and developing a vehicle of a brand-new vehicle type, the first time of adjustment is to use the part parameters of the chassis structural member in the vehicle set by the user, and at this time, the stiffness interval input by the user when designing the vehicle may be taken as the set stiffness interval.

Alternatively, in order to improve the development efficiency of the vehicle, when a known vehicle of the same vehicle type as the vehicle exists, the part parameter of the chassis structural member acquired from the known vehicle of the same vehicle type as the vehicle may be used as the initial part parameter, at this time, the current chassis stiffness of the vehicle chassis determined in the first adjustment process may be acquired, and the set stiffness interval may be determined by the current chassis stiffness and a preset stiffness adjustment proportion.

The preset stiffness adjustment ratio may be determined according to actual optimization requirements, and is not limited herein.

The preset stiffness adjustment ratio may be ±5%, for example. Therefore, the current chassis rigidity of the vehicle chassis determined in the first adjustment process is calculated according to the preset rigidity adjustment proportion, and the set rigidity interval can be obtained.

Therefore, in the process of adjusting the vehicle chassis, the set rigidity interval required by adjustment can be flexibly determined according to different development scenes, and the rationality and the suitability of the set rigidity interval can be ensured.

In some possible embodiments, for each adjustment, the adjustment weight of the chassis structural member relative to the current chassis stiffness may be obtained by performing sensitivity detection on the chassis structural member; determining the adjustment sequence and the adjustment strength of a plurality of chassis structural members based on the adjustment weights corresponding to the chassis structural members; and respectively adjusting the current part parameters of each chassis structural member according to the adjustment sequence and the adjustment strength of each chassis structural member to obtain the adjusted part parameters of each chassis structural member after the adjustment.

When the sensitivity detection is performed on the chassis structural members, the same target value can be adjusted only for the stiffness target value of a certain chassis structural member each time, and then the process returns to the step of obtaining the simulated chassis model of the vehicle chassis, and the stiffness change value of the current chassis stiffness of the vehicle chassis before and after the adjustment is determined, so that the stiffness change value of the current chassis stiffness of the vehicle chassis corresponding to each chassis structural member is obtained under the condition that the same target value is adjusted for the stiffness target value.

And if the rigidity change value is smaller, the adjusting influence of the corresponding chassis structural member relative to the current chassis rigidity is smaller, so that the adjusting weight of the corresponding chassis structural member is higher.

Taking the example of determining the adjustment weights corresponding to the chassis structural member a and the chassis structural member B respectively, for the stiffness target values of the chassis structural member a and the chassis structural member B to be adjusted down 30, if the stiffness change value of the current chassis stiffness of the vehicle chassis before and after the adjustment is smaller in the case of only adjusting the stiffness target value of the chassis structural member a down 30, and the stiffness change value of the current chassis stiffness of the vehicle chassis before and after the adjustment is larger in the case of only adjusting the stiffness target value of the chassis structural member B down 30, it may be determined that the adjustment influence of the chassis structural member a relative to the current chassis stiffness is smaller, and the adjustment influence of the chassis structural member B relative to the current chassis stiffness is larger, that is, the adjustment influence of the chassis structural member a relative to the current chassis stiffness is smaller than the adjustment influence of the chassis structural member B relative to the current chassis stiffness, so that the adjustment weight of the chassis structural member a is smaller than the adjustment weight of the chassis structural member B.

Here, the higher the adjustment weight of the chassis structural member, the earlier the corresponding adjustment sequence thereof, and the greater the corresponding adjustment strength thereof.

With the above example, the adjustment effect of the chassis structural member a with respect to the current chassis rigidity is smaller than the adjustment effect of the chassis structural member B with respect to the current chassis rigidity, and the adjustment weight of the chassis structural member a is smaller than the adjustment weight of the chassis structural member B, so that the chassis structural member a may be preferentially adjusted when the chassis structural member a and the chassis structural member B are adjusted, and the adjustment value for the chassis structural member a may be larger than the adjustment value for the chassis structural member B.

Therefore, the adjusting weight of the chassis structural member relative to the current chassis rigidity can be obtained by detecting the sensitivity of the chassis structural member, so that the adjusting sequence and the adjusting strength of a plurality of chassis structural members are determined, the current part parameters are adjusted in a certain direction according to the adjusting sequence and the adjusting strength of each chassis structural member, the current part parameters of each chassis structural member are adjusted in a macroscopic guiding function, and the adjustment of the current part parameters of each chassis structural member is conducive to the targeted adjustment of the vehicle chassis.

Optionally, the determining of the adjustment weight corresponding to the chassis structural member may be that after the adjustment weight is determined in the first adjustment process, the adjustment weight determined in the first adjustment process is used as the adjustment weight used in each subsequent adjustment.

Alternatively, the adjustment weight corresponding to the chassis structural member may be determined through the current chassis of the vehicle in each adjustment process.

In the process of adjusting, after the adjusted part parameters of each chassis structural member after the adjustment are obtained each time, the method can return to the step of obtaining the simulated chassis model of the vehicle chassis until the vehicle chassis meets the preset condition after the adjustment for a plurality of times, and the adjustment of the vehicle chassis is stopped.

For the preset condition, in some possible embodiments, it may be determined that the vehicle chassis meets the preset condition by:

Optionally, the vehicle performance requirements may also include strength requirements, durability requirements, stability requirements, and the like.

Here, under each adjusted part parameter obtained after the first adjustment, the target chassis stiffness of the vehicle chassis is located in the set stiffness section, the performance of the vehicle chassis meets the vehicle performance requirement, and the target chassis stiffness of the vehicle chassis is the minimum value of the weights of the vehicle chassis after each adjustment, that is, each adjusted part parameter obtained after the first adjustment can be used as the final part parameter for the chassis structural member corresponding to the vehicle chassis after the adjustment, therefore, after the first adjustment, several times of adjustment are needed to complete the current part parameter of each chassis structural member, so that it can be determined that, during the multiple adjustments, the target chassis stiffness of the vehicle chassis is located in the set stiffness section under each adjusted part parameter obtained after the first adjustment, the performance of the vehicle chassis meets the vehicle performance requirement, and the target weight of the vehicle chassis is the minimum value of the weights of the vehicle chassis after each adjustment.

Therefore, under the parameters of each adjusted part obtained after each adjustment, the comparison result of the target chassis rigidity of the vehicle chassis and the set rigidity interval, the comparison result of the performance of the vehicle chassis and the vehicle performance requirement, and the target weight of the vehicle chassis can be combined, and the preset condition for stopping the adjustment of the vehicle chassis is determined, so that the efficiency of the adjustment of the vehicle chassis is improved.

Accordingly, in some possible embodiments, the adjusted part parameters obtained after the first adjustment may be used as final part parameters that can be used by the chassis structural member corresponding to the chassis of the vehicle after the adjustment is performed.

Therefore, the parameters of the parts after the adjustment, which are obtained after the first target adjustment with the optimal value in the multiple adjustments, are respectively used as the final part parameters which can be used by the corresponding chassis structural member after the adjustment of the vehicle chassis, and the accuracy and the effectiveness of the adjustment of the vehicle chassis are effectively improved.

According to the vehicle chassis adjusting method, the simulation chassis model of the vehicle chassis can be obtained, the vehicle chassis is subjected to stress simulation test through the simulation chassis model, the moving distance of the vehicle chassis under the action of external force is obtained, and then the current chassis rigidity of the vehicle chassis is determined by using the moving distance and the chassis weight of the vehicle chassis, so that the current chassis rigidity and the set rigidity interval of the vehicle chassis are used as guidance and reference in the adjusting process of the current part parameters of each chassis structural member, the current part parameters of each chassis structural member are adjusted, the adjusted part parameters of each chassis structural member are obtained, the complexity of adjusting the current part parameters of the chassis structural members is greatly reduced until the vehicle chassis after multiple times of adjustment meets the preset conditions, the adjustment of the vehicle chassis is stopped, the current chassis rigidity and the set rigidity interval of the vehicle chassis have the macroscopic guiding effect on the adjustment of the current part parameters of each chassis structural member, the adjustment of the vehicle chassis is facilitated to be aimed, the investment of manpower and material resources is reduced, and the accuracy and the effectiveness of the vehicle chassis adjustment are effectively improved.

Referring to fig. 2, fig. 2 is a flowchart of another vehicle chassis adjustment method provided in an embodiment of the present disclosure, and as shown in fig. 2, the vehicle chassis adjustment method provided in the embodiment of the present disclosure includes steps S201 to S205, where:

s201: and obtaining a simulated chassis model of the vehicle chassis, wherein the simulated chassis model is obtained through current part parameter simulation modeling of each chassis structural part in the vehicle chassis.

S202: constraint processing is carried out on the target interface point on the simulation chassis model; the target interface point comprises a connection point with a vehicle body on the simulated chassis model and/or a connection point between structural component models corresponding to the chassis structural components; the constraint process includes at least one of a degree of freedom constraint, a movement direction constraint, and a rotation direction constraint.

Alternatively, the connection points on the simulated chassis model to the vehicle body may include, for example, connection points on the shock absorber to the vehicle body, connection points on the spring to the vehicle body, and the like. The connection points between the structural member models corresponding to the chassis structural members may include, for example, connection points between the structural member models corresponding to the subframe and the structural member models corresponding to the link, and the like.

Therefore, after the simulated chassis model is obtained, constraint processing is carried out on the target interface point on the simulated chassis model, so that the fit of the simulated chassis model and the vehicle chassis in the moving process is improved, and the accuracy of determining the rigidity of the current chassis is improved effectively.

S203: and carrying out stress simulation test on the vehicle chassis through the simulation chassis model to obtain the moving distance of the vehicle chassis under the action of external force.

S204: determining a current chassis stiffness of the vehicle chassis using the travel distance and a chassis weight of the vehicle chassis.

S205: and adjusting the current part parameters of each chassis structural member based on the current chassis rigidity and the set rigidity interval of the vehicle chassis to obtain the adjusted part parameters of each chassis structural member after the current adjustment until the vehicle chassis meets the preset condition after the adjustment for a plurality of times, and stopping adjusting the vehicle chassis.

The descriptions of step S201 and step S203 to step S205 may refer to the descriptions of step S101 to step S104, and may achieve the same technical effects and solve the same technical problems, which are not described herein.

In order to clearly demonstrate the vehicle chassis adjustment process, reference may be made to fig. 3, and fig. 3 is a schematic diagram of a vehicle chassis adjustment process according to an embodiment of the disclosure. As shown in fig. 3, the material parameters of each chassis structural member and the connection mode between each chassis structural member can be determined from the current part parameters of each chassis structural member in the vehicle chassis, then based on the material parameters of each chassis structural member, the structural member model corresponding to each chassis structural member is obtained through simulation modeling, and then the structural member model corresponding to each chassis structural member is connected according to the connection mode between each chassis structural member, so as to obtain the simulation chassis model. And then carrying out constraint processing on a target interface point on the simulated chassis model, and then carrying out stress simulation test on the vehicle chassis through the simulated chassis model to obtain the moving distance of the vehicle chassis under the action of external force, and determining the current chassis rigidity of the vehicle chassis by using the moving distance and the chassis weight of the vehicle chassis. And adjusting the current part parameters of each chassis structural member based on the current chassis rigidity and the set rigidity interval of the vehicle chassis to obtain the adjusted part parameters of each chassis structural member after the current adjustment. After the current part parameters of each chassis structural member are adjusted for multiple times to obtain adjusted part parameters, if the target chassis stiffness of the vehicle chassis is located in the set stiffness interval under each adjusted part parameter obtained after the first target adjustment, the performance of the vehicle chassis meets the vehicle performance requirement, and the target weight of the vehicle chassis is the minimum value of the weights of the vehicle chassis after each adjustment, and the vehicle chassis is determined to meet the preset condition. And under the condition that the vehicle chassis meets the preset condition, stopping adjusting the vehicle chassis, and taking all the adjusted part parameters obtained after the first target adjustment as final part parameters which can be used by the chassis structural members corresponding to the adjusted vehicle chassis. The specific steps are described in the foregoing embodiments, and are not repeated herein.

It will be appreciated by those skilled in the art that in the above-described method of the specific embodiments, the written order of steps is not meant to imply a strict order of execution but rather should be construed according to the function and possibly inherent logic of the steps.

Based on the same inventive concept, the embodiment of the disclosure further provides a vehicle chassis adjustment device corresponding to the vehicle chassis adjustment method, and since the principle of solving the problem of the vehicle chassis adjustment device in the embodiment of the disclosure is similar to that of the vehicle chassis adjustment method in the embodiment of the disclosure, the implementation of the vehicle chassis adjustment device can refer to the implementation of the vehicle chassis adjustment method, and the repetition is omitted.

Referring to fig. 4 and 5, fig. 4 is a schematic diagram of a vehicle chassis adjustment device according to an embodiment of the disclosure, and fig. 5 is a schematic diagram of a second vehicle chassis adjustment device according to an embodiment of the disclosure. As shown in fig. 4, a vehicle chassis adjustment device 400 provided by an embodiment of the present disclosure includes:

The model acquisition module 410 is configured to acquire a simulated chassis model of a vehicle chassis, where the simulated chassis model is obtained by performing simulation modeling on current part parameters of each chassis structural member in the vehicle chassis;

the distance determining module 420 is configured to perform a stress simulation test on the vehicle chassis through the simulated chassis model, so as to obtain a movement distance of the vehicle chassis under the action of an external force;

a stiffness determination module 430 for determining a current chassis stiffness of the vehicle chassis using the travel distance and a chassis weight of the vehicle chassis;

and the parameter adjustment module 440 is configured to adjust current part parameters of each chassis structural member based on the current chassis stiffness and the set stiffness interval of the vehicle chassis, to obtain adjusted part parameters of each chassis structural member after the current adjustment, until the vehicle chassis meets a preset condition after multiple adjustments, and stop adjusting the vehicle chassis.

In an alternative embodiment, the parameter adjustment module 440 determines that the vehicle chassis meets a preset condition by:

In an alternative embodiment, as shown in fig. 5, the apparatus further includes a parameter determination module 450, where the parameter determination module 450 is configured to:

In an alternative embodiment, the model acquisition module 410 and the parameter adjustment module 440 determine the current part parameters by:

In an alternative embodiment, the parameter adjustment module 440 determines the set stiffness interval by:

In an alternative embodiment, as shown in fig. 5, the apparatus further includes a model constraint module 460, the model constraint module 460 being configured to:

In an optional implementation manner, the parameter adjustment module 440 is specifically configured to, when being configured to adjust the current part parameter of each chassis structural member based on the current chassis stiffness and the set stiffness interval of the vehicle chassis to obtain the adjusted part parameter of each chassis structural member after the current adjustment:

In an alternative embodiment, the distance determining module 420 is specifically configured to:

In an alternative embodiment, the stiffness determination module 430 is specifically configured to:

The process flow of each module in the apparatus and the interaction flow between the modules may be described with reference to the related descriptions in the above method embodiments, which are not described in detail herein.

According to the vehicle chassis adjusting device, the simulation chassis model of the vehicle chassis can be obtained, the vehicle chassis is subjected to stress simulation test through the simulation chassis model, the moving distance of the vehicle chassis under the action of external force is obtained, and then the current chassis rigidity of the vehicle chassis is determined by using the moving distance and the chassis weight of the vehicle chassis, so that the current chassis rigidity and the set rigidity interval of the vehicle chassis are used as guidance and reference in the adjusting process of the current part parameters of each chassis structural member, the current part parameters of each chassis structural member are adjusted, the adjusted part parameters of each chassis structural member are obtained, the complexity of adjusting the current part parameters of the chassis structural members is greatly reduced until the vehicle chassis after multiple times of adjustment meets the preset conditions, the adjustment of the vehicle chassis is stopped, the current chassis rigidity and the set rigidity interval of the vehicle chassis have macroscopic guiding action on the adjustment of the current part parameters of each chassis structural member, the adjustment of the vehicle chassis is facilitated to be purposefully adjusted, the investment of manpower and material resources is reduced, and the accuracy and the effectiveness of the adjustment of the vehicle chassis are effectively improved.

Corresponding to the vehicle chassis adjustment method in fig. 1 and 3, the embodiment of the disclosure further provides an electronic device 600, as shown in fig. 6, which is a schematic structural diagram of the electronic device 600 provided in the embodiment of the disclosure, including:

a processor 610, a memory 620, and a bus 630. Wherein the memory 620 is used for storing execution instructions, including a memory 621 and an external memory 622; the memory 621 is also referred to as an internal memory, and is used for temporarily storing operation data in the processor 610 and data exchanged with the external memory 622 such as a hard disk, and the processor 610 exchanges data with the external memory 622 via the memory 621.

In the embodiment of the present application, the memory 620 is specifically configured to store application program codes for executing the solution of the present application, and the processor 610 controls the execution. That is, when the electronic device 600 is operating, communication between the processor 610 and the memory 620 is via the bus 630, such that the processor 610 executes the application code stored in the memory 620, thereby performing the steps of the vehicle chassis adjustment method described in any of the foregoing embodiments.

The Memory 620 may be, but is not limited to, a random access Memory (Random Access Memory, RAM), a Read Only Memory (ROM), a programmable Read Only Memory (Programmable Read-Only Memory, PROM), an erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), an electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.

The processor 610 may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should be understood that the structures illustrated in the embodiments of the present application do not constitute a particular limitation of the electronic device 600. In other embodiments of the present application, electronic device 600 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The disclosed embodiments also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the vehicle chassis adjustment method described in the method embodiments above. Wherein the storage medium may be a volatile or nonvolatile computer readable storage medium.

The embodiments of the present disclosure further provide a computer program product, where the computer program product includes computer instructions, where the computer instructions, when executed by a processor, may perform the steps of the vehicle chassis adjustment method described in the foregoing method embodiments, and specifically, reference the foregoing method embodiments will not be described herein.

Wherein the above-mentioned computer program product may be realized in particular by means of hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied as a computer storage medium, and in another alternative embodiment, the computer program product is embodied as a software product, such as a software development kit (Software Development Kit, SDK), or the like.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus and device described above may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again. In several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus, device, and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

The units described as separate structural elements may or may not be physically separate, and structural elements shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in essence or a part contributing to the prior art or a part of the technical solution, or in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present disclosure, and are not intended to limit the scope of the disclosure, but the present disclosure is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, it is not limited to the disclosure: any person skilled in the art, within the technical scope of the disclosure of the present disclosure, may modify or easily conceive changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features thereof; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the disclosure, and are intended to be included within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A method of calibrating a vehicle chassis, the method comprising:

2. The method of claim 1, wherein the vehicle chassis is determined to meet a preset condition by:

3. The method according to claim 2, wherein the method further comprises:

4. The method of claim 1, wherein the current part parameters are determined by:

5. The method of claim 1, wherein the set stiffness interval is determined by:

6. The method of claim 1, wherein prior to said subjecting said vehicle chassis to said force simulation test by said simulated chassis model to obtain a distance of movement of said vehicle chassis under the influence of an external force, said method further comprises:

7. The method of claim 1, wherein adjusting the current part parameters of each chassis structural member based on the current chassis stiffness and the set stiffness interval of the vehicle chassis to obtain adjusted part parameters of each chassis structural member after the current adjustment comprises:

8. The method according to claim 1, wherein the step of performing a force simulation test on the vehicle chassis by the simulated chassis model to obtain a moving distance of the vehicle chassis under the action of an external force comprises:

9. The method of claim 1, wherein the determining the current chassis stiffness of the vehicle chassis using the travel distance and a chassis weight of the vehicle chassis comprises:

10. A vehicle chassis adjustment device, the device comprising:

11. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, the processor and the memory in communication over the bus when the electronic device is running, the machine readable instructions when executed by the processor performing the steps of the vehicle chassis adjustment method according to any of claims 1 to 9.

12. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the vehicle chassis adjustment method according to any one of claims 1 to 9.