Suspension gap checking method, device and equipment

Abstract

The invention provides a suspension gap checking method, device and equipment, and the method comprises the steps: obtaining a to-be-tested model corresponding to a target suspension, and enabling the to-be-tested model to comprise a first structure model of a buffer vibration isolation structure under a target acting force and a second structure model corresponding to a preset structure; the predetermined structure comprises a structure adjacent to the position of the buffer vibration isolation structure on the vehicle, and determining minimum gaps between the first structure model and the second structure model under a plurality of predetermined working conditions based on the to-be-tested model, the clearance checking result of the target suspension is determined on the basis of the size relation between the minimum clearance and the preset clearance threshold value under each preset working condition, so that the clearance between the target suspension and the adjacent structure can be quickly and accurately checked in the design process of the target suspension, and then the clearance between the target suspension and the adjacent structure can be quickly and accurately checked in the working process of the target suspension through the checking. And the influence on the working reliability of the target suspension caused by interference among different components can be effectively avoided.

Description

Technical Field

[0001] The present application relates to the field of data processing, and in particular to a suspension clearance calibration method, device and equipment. Background Art

[0002] In a vehicle, the suspension is an important component that connects the wheels and the vehicle body. Its main function is to ensure that the vehicle has good stability and ride comfort during driving. The performance of the suspension has an important impact on the vehicle's handling, safety and NVH (Noise, Vibration and Harshness) performance.

[0003] However, in the suspension design process, a suspension model is usually constructed to detect whether the stiffness of the suspension meets the requirements, but the suspension clearance cannot be effectively checked. As a result, interference is easily generated between different components during the suspension operation, making it difficult to ensure the operating reliability of the suspension. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a suspension clearance calibration method, device and equipment to solve the problem that the suspension clearance cannot be calibrated in the prior art.

[0005] To achieve the above technical objectives, the present application provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present specification provides a suspension clearance calibration method, wherein a target suspension of a vehicle includes a leaf spring assembly and a buffer vibration isolation structure, wherein the leaf spring assembly includes two leaf spring bodies, and the buffer vibration isolation structure is disposed between the two leaf spring bodies, and the method includes:

[0007] Acquire a model to be tested corresponding to the target suspension, wherein the model to be tested includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure; the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure;

[0008] Based on the model to be tested, respectively determining the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions;

[0009] Based on the size relationship between the minimum gap and the predetermined gap threshold under each of the predetermined working conditions, the gap verification result of the target suspension is determined.

[0010] In one embodiment, the target force includes a first force generated on the buffer vibration isolation structure when the leaf spring body is misaligned, and / or a second force determined based on a target bearing capacity of the target suspension.

[0011] In one implementation, the step of obtaining the model to be tested corresponding to the target suspension includes:

[0012] Obtaining a threshold value of a size change of the buffer vibration isolation structure under the target force;

[0013] Based on a threshold value of a size change of the buffer and vibration isolation structure, a first structural model of the buffer and vibration isolation structure under the target force is determined.

[0014] In one embodiment, the determining, based on the model to be tested, respectively the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions comprises:

[0015] Based on the predetermined working condition, determining target force points of the wheels connected to the target suspension and force requirements corresponding to the target force points;

[0016] Based on the model to be tested, the target force points and the force requirements corresponding to each of the target force points, the minimum gap between the first structural model and the second structural model under the predetermined working condition is determined.

[0017] In one implementation, based on the predetermined working condition, determining the force requirements corresponding to each of the target force points includes:

[0018] Based on the target driving acceleration information of the vehicle under the predetermined working condition and the mechanical characteristics of the vehicle under a fully loaded state, the force requirements corresponding to each of the target force points are determined.

[0019] In one embodiment, determining the minimum gap between the first structural model and the second structural model under the predetermined working condition based on the model to be tested, the target force points, and the force requirements corresponding to each of the target force points includes:

[0020] Inputting the model to be tested into a clearance verification model of the vehicle, wherein the clearance verification model includes a wheel model corresponding to a wheel connected to the target suspension;

[0021] Based on the force requirements corresponding to each of the target force points, the gap verification model is controlled to simulate the predetermined working condition to obtain the minimum gap between the first structural model and the second structural model under the predetermined working condition.

[0022] In one embodiment, the predetermined operating condition includes a condition in which an impact force applied to the vehicle during operation is greater than a predetermined impact force.

[0023] In one embodiment, the design method of the target suspension includes:

[0024] Based on the target correspondence relationship of the target suspension, determining the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension; the target correspondence relationship includes the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at different displacements of the target suspension;

[0025] The target suspension is constructed based on target stiffnesses of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension.

[0026] In a second aspect, an embodiment of the present specification provides a suspension clearance calibration device, wherein a target suspension of a vehicle includes a leaf spring assembly and a buffer vibration isolation structure, wherein the leaf spring assembly includes two leaf spring bodies, and the buffer vibration isolation structure is disposed between the two leaf spring bodies, and the device includes:

[0027] A first processing module is used to obtain a to-be-tested model corresponding to the target suspension, wherein the to-be-tested model includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure; the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure;

[0028] A second processing module, configured to determine, based on the model to be tested, the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions;

[0029] The third processing module is used to determine the clearance verification result of the target suspension based on the size relationship between the minimum clearance and the predetermined clearance threshold under each of the predetermined working conditions.

[0030] In a third aspect, an embodiment of the present specification provides an electronic device, the electronic device comprising at least one processor and at least one memory, the memory storing a computer program, and the computer program, when executed by the processor, implements the suspension clearance calibration method as described in any one of the above items.

[0031] In a fourth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the suspension clearance calibration method as described in any one of the above items is implemented.

[0032] In a fifth aspect, an embodiment of the present specification provides a computer program product or a computer program, wherein the computer program product includes a computer program, and the computer program is stored in a computer-readable storage medium; the processor of the computer device reads the computer program from the computer-readable storage medium, and when the processor executes the computer program, it implements the suspension clearance verification method as described in any one of the above items.

[0033] It can be seen from the above technical scheme that the embodiment of the present application provides a suspension gap calibration method, device and equipment. The target suspension of the vehicle includes a leaf spring assembly and a buffer vibration isolation structure. The leaf spring assembly includes two leaf spring leaves. The buffer vibration isolation structure is arranged between the two leaf spring leaves. The method obtains a model to be tested corresponding to the target suspension. The model to be tested includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure. The predetermined structure includes a structure on the vehicle adjacent to the position of the buffer vibration isolation structure. Based on the model to be tested, the minimum gap between the first structural model and the second structural model under multiple predetermined working conditions is determined respectively, so as to determine the gap calibration result of the target suspension based on the size relationship between the minimum gap and the predetermined gap threshold under each predetermined working condition. Therefore, in the design process of the target suspension, the gap between the target suspension and the adjacent structure can be quickly and accurately calibrated. Then, through the calibration, in the working process of the target suspension, interference between different components can be effectively avoided to affect the working reliability of the target suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0035] Figure 1 A schematic flow chart of a suspension clearance calibration method provided for an implementation manner of this specification.

[0036] Figure 2 A schematic diagram of the structure of a model to be tested provided for the implementation mode of this specification.

[0037] Figure 3 A schematic diagram of a target correspondence relationship corresponding to a target suspension provided in an implementation manner of this specification.

[0038] Figure 4 A schematic structural diagram of a suspension clearance calibration device provided for an implementation manner of this specification. DETAILED DESCRIPTION

[0039] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0040] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0041] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0042] Overview

[0043] As mentioned in the background technology, in a vehicle, the suspension is an important component connecting the wheels and the vehicle body, and its main function is to ensure that the vehicle has good stability and ride comfort during driving. The performance of the suspension has an important impact on the vehicle's handling, safety and NVH (Noise, Vibration and Harshness) performance.

[0044] However, in the suspension design process, a suspension model is usually constructed to detect whether the stiffness of the suspension meets the requirements, and the suspension clearance cannot be effectively checked. As a result, interference is easily generated between different components during the operation of the suspension, and it is difficult to ensure the working reliability of the suspension. For example, when the buffer vibration isolation structure interferes with the mounting bracket of the leaf spring assembly, the buffer vibration isolation structure and the mounting bracket of the leaf spring assembly are easily damaged, causing the buffer vibration isolation structure and the mounting bracket of the leaf spring assembly to fail, thereby greatly reducing the smoothness and comfort of the entire vehicle.

[0045] In order to solve the problem that the traditional method cannot effectively calibrate the suspension clearance, in the technical solution of the present application, by obtaining a test model corresponding to the target suspension, the test model includes a first structural model of the buffer vibration isolation structure under the target force and a second structural model corresponding to the predetermined structure, the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure, and based on the test model, the minimum gap between the first structural model and the second structural model under multiple predetermined working conditions is determined respectively, so as to determine the gap calibration result of the target suspension based on the size relationship between the minimum gap and the predetermined gap threshold under each predetermined working condition, so that in the design process of the target suspension, the gap between the target suspension and the adjacent structure can be quickly and accurately calibrated, and then through the calibration, during the operation of the target suspension, interference between different components can be effectively avoided to affect the working reliability of the target suspension.

[0046] Based on the above-mentioned inventive concept, the suspension clearance calibration method provided in the embodiment of this specification is exemplarily described below.

[0047] Exemplary Methods

[0048] The embodiment of the present specification provides a suspension clearance calibration method, wherein the target suspension of the vehicle includes a leaf spring assembly and a buffer vibration isolation structure, wherein the leaf spring assembly includes two leaf spring bodies, and the buffer vibration isolation structure is arranged between the two leaf spring bodies, such as Figure 1 As shown, the method includes:

[0049] S101. Acquire a model to be tested corresponding to the target suspension, wherein the model to be tested includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure; the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure.

[0050] Specifically, the leaf spring assembly may include two leaf spring bodies, the two leaf spring bodies may be fixedly connected, the first leaf spring body of the two leaf spring bodies may be connected to the vehicle via a mounting bracket, and the first leaf spring body may be a leaf spring body close to the top of the vehicle. The buffer vibration isolation structure may be made of a flexible material such as rubber, and may be disposed between the two leaf spring bodies. For example, it may be disposed at the end of the second leaf spring body of the two leaf spring bodies, and the second leaf spring body may be a leaf spring body close to the bottom of the vehicle. Thus, the buffer vibration isolation structure has the function of isolating and limiting the vibration of the two leaf spring bodies, thereby effectively avoiding abnormal metal knocking noise caused by dynamic contact between the two leaf spring bodies.

[0051] The target suspension is the suspension to be calibrated for clearance, for example, it can be the suspension designed in the current design stage during the suspension design process for the vehicle. The model to be tested corresponding to the target suspension can be as follows: Figure 2As shown, it includes a first structural model 201 of the buffer vibration isolation structure under a target force. The target force may include the force to which the buffer vibration isolation structure is subjected during the operation of the vehicle. For example, it may be the maximum force to which the buffer vibration isolation structure may be subjected, or it may be the force to which the target suspension is subjected when it is in a predetermined state. The specific setting may be made according to actual needs.

[0052] In implementation, the deformation information of the buffer vibration isolation structure under the target force can be obtained through model simulation or experiment, and the first structural model 201 of the buffer vibration isolation structure under the target force can be constructed based on the deformation information of the buffer vibration isolation structure under the target force.

[0053] In addition, the model to be tested corresponding to the target suspension may also include a second structural model 202 corresponding to a predetermined structure, and the predetermined structure may be a structure on the vehicle adjacent to the buffer vibration isolation structure, for example, it may be a mounting bracket of the leaf spring assembly. It is understandable that the model to be tested corresponding to the target suspension may also include a third structural model 203 corresponding to the first leaf spring body and a fourth structural model 204 corresponding to the second leaf spring body. In implementation, the model to be tested corresponding to the target suspension may be constructed based on the positional relationship between the leaf spring assembly and the mounting bracket and the buffer vibration isolation structure, so that the target suspension can be effectively calibrated for clearance according to the model to be tested.

[0054] S102: Based on the model to be tested, respectively determine the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions.

[0055] Specifically, the predetermined working condition may include working conditions existing during vehicle operation, which may be determined according to actual test requirements. For example, the working condition may be divided into a gentle working condition and an impact working condition according to the magnitude of the impact force on the wheel during vehicle operation, and the impact working condition may be used as the predetermined working condition to simulate the minimum gap between the first structural model and the second structural model based on the model to be tested of the target suspension system under the impact working condition.

[0056] As a preferred implementation, the predetermined operating condition includes a condition where the impact force applied to the vehicle during operation is greater than a predetermined impact force.

[0057] For example, the predetermined working condition may include a working condition in which the impact force on the wheels connected to the target suspension is greater than the predetermined impact force during the operation of the vehicle, such as forward braking condition, extreme steering condition, reversing step impact condition, turning over a pothole impact condition, vehicle over a bump impact condition, straight-ahead pothole impact condition, forward non-pothole impact condition, reversing non-pothole impact condition, and non-directional curb impact condition, etc. Considering that the greater the impact force on the wheels connected to the target suspension, the greater the deformation of the target suspension, and the higher the risk of interference between the buffer vibration isolation structure and the predetermined structure, thus, by simulating the gap between the buffer vibration isolation structure and the predetermined structure under the condition where the impact force is greater than the predetermined impact force, the reliability of the gap verification result can be effectively guaranteed, and further, the interference between the buffer vibration isolation structure and the predetermined structure during the actual operation of the vehicle can be effectively avoided, thereby effectively avoiding damage to the buffer vibration isolation structure and / or the predetermined structure, and further ensuring the effective operation of the target suspension.

[0058] The minimum gap between the first structural model and the second structural model may include the minimum value of the gap between the parts of the first structural model and the second structural model that are closest to each other during the simulation process. For example, the gap to be measured may be determined based on the positional relationship between the buffer vibration isolation structure and the predetermined structure. The gap to be measured may include one or more gaps. For any gap to be measured, the gap to be measured may include the gap between the first predetermined part of the first structural model and the second predetermined part of the second structural model. During the simulation process, the value of each gap to be measured is measured in real time, and the minimum value of all measured values ​​is used as the minimum gap between the first structural model and the second structural model, wherein all measured values ​​may include each measured value of each gap to be measured.

[0059] S103: Determine a clearance verification result of the target suspension based on a size relationship between the minimum clearance and a predetermined clearance threshold under each of the predetermined working conditions.

[0060] Specifically, for any predetermined working condition, the minimum gap simulated under the predetermined working condition can be compared with the predetermined gap threshold to obtain the size relationship between the minimum gap under the predetermined working condition and the predetermined gap threshold. The predetermined gap threshold can be set according to actual needs, for example, it can be set to 0.

[0061] The clearance check result of the target suspension may include clearance check success and clearance check failure. In implementation, when the minimum clearance under at least one predetermined working condition is less than the predetermined clearance threshold, it can be determined that the clearance check of the target suspension has failed, and when the minimum clearance under all predetermined working conditions is greater than or equal to the predetermined clearance threshold, it can be determined that the clearance check of the target suspension has succeeded, so that in the design process of the target suspension, the clearance between the target suspension and the adjacent structure can be quickly and accurately checked, and then through the check, in the working process of the target suspension, interference between different components can be effectively avoided to affect the working reliability of the target suspension.

[0062] In a feasible implementation manner, the target force includes a first force generated on the buffer vibration isolation structure when the leaf spring body is misaligned, and / or a second force determined based on a target bearing capacity of the target suspension.

[0063] Specifically, the first force applied to the buffer vibration isolation structure when the leaf spring body is misaligned may include the squeezing force applied to the buffer vibration isolation structure between the two leaf spring bodies when one of the two leaf spring bodies or both leaf spring bodies are misaligned. In implementation, the misalignment deformation interval of the leaf spring body may be simulated by a vehicle dynamics model, for example, the misalignment deformation interval of the leaf spring body may be 0.5 mm to 1 mm. Thus, the first force applied to the buffer vibration isolation structure when the leaf spring body is misaligned may be determined based on the misalignment deformation interval of the leaf spring body.

[0064] The target bearing capacity of the target suspension may include the bearing capacity of the target suspension when the vehicle is in a target load state and the vehicle is stationary. The load state of the vehicle may include no-load, half-load, full-load, overload, etc. In implementation, for any load state, the wheel load of the wheel to which the target suspension is connected under the load state may be used as the bearing capacity of the target suspension under the load state. The target load state may be any one of the various load states of the vehicle, and may be specifically set according to actual needs. As a preferred embodiment, the fully loaded state may be used as the target load state. For example, the target bearing capacity may be 5KN or 10KN, etc. Thus, the second force applied to the buffering and vibration isolation structure may be determined based on the target bearing capacity of the target suspension.

[0065] During implementation, the deformation information of the buffer vibration isolation structure when the target bearing force is applied to the buffer vibration isolation structure when the leaf spring body is at the upper limit of the dislocation deformation range can be determined through model simulation or experiments, so as to construct a first structural model of the buffer vibration isolation structure under the target force based on the deformation information, so that the reliability of the gap verification result of the target suspension can be effectively improved based on the first structural model of the buffer vibration isolation structure under the target force.

[0066] In a feasible implementation manner, the obtaining the to-be-tested model corresponding to the target suspension includes:

[0067] Obtaining a threshold value of a size change of the buffer vibration isolation structure under the target force;

[0068] Based on a threshold value of a size change of the buffer and vibration isolation structure, a first structural model of the buffer and vibration isolation structure under the target force is determined.

[0069] Specifically, in the process of obtaining the first structural model of the buffer vibration isolation structure under the target force, the dimensional change threshold of the buffer vibration isolation structure under the target force can be obtained, and the dimensional change threshold of the buffer vibration isolation structure can include the maximum change of the dimension of the buffer vibration isolation structure in the length and width directions. For example, the deformation information of the buffer vibration isolation structure under the target force can be determined by model simulation or experiment, and the dimensional change threshold of the buffer vibration isolation structure can be determined according to the deformation information.

[0070] During implementation, the first structural model of the buffer vibration isolation structure under the target force can be determined based on the threshold value of the dimensional change of the buffer vibration isolation structure. For example, the dimensional information of the first structural model in the length and width directions can be determined based on the threshold value of the dimensional change of the buffer vibration isolation structure under the target force, and the first structural model of the buffer vibration isolation structure under the target force can be constructed based on the dimensional information of the first structural model in the length and width directions. Therefore, according to the first structural model, the reliability of the clearance verification result of the target suspension can be further improved.

[0071] In a feasible implementation manner, the determining, based on the model to be tested, respectively the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions includes:

[0072] Based on the predetermined working condition, determining target force points of the wheels connected to the target suspension and force requirements corresponding to the target force points;

[0073] The model to be tested is input into the gap verification model of the vehicle, and based on the force requirements corresponding to each target force point, the gap verification model is controlled to simulate the predetermined working condition to obtain the minimum gap between the first structural model and the second structural model under the predetermined working condition; the gap verification model includes a wheel model corresponding to the wheel connected to the target suspension.

[0074] Specifically, for any predetermined working condition among a plurality of predetermined working conditions, in the process of determining the minimum gap between the first structural body model and the second structural body model under the predetermined working condition, the target force point of the wheel connected to the target suspension can be determined based on the predetermined working condition, and the target force point can include the wheel center and / or the tire contact point. For example, the target force point of the wheel connected to the target suspension under the predetermined working condition can be determined based on a predetermined corresponding relationship between the predetermined working condition and the target force point.

[0075] At the same time, the force requirements corresponding to each target stress point can also be determined based on the predetermined working condition. For any target stress point, the force requirement corresponding to the target stress point can include the force direction and force magnitude of the target stress point, wherein the force direction can include the X direction, the Y direction and the Z direction, the X direction can be used to characterize the length direction of the vehicle, the Y direction can be used to characterize the width direction of the vehicle, and the Z direction can be used to characterize the vertical direction of the plane in which the vehicle is located. In implementation, the force requirements corresponding to each target stress point can be determined based on the target driving information of the vehicle under the predetermined working condition and / or the mechanical characteristics of the vehicle under the predetermined load state, so as to effectively ensure the validity of the determination results of the force requirements of each target stress point, and then according to the force requirements of the wheels connected to the target suspension at each target stress point, the minimum gap between the first structural model and the second structural model under the predetermined working condition can be accurately simulated.

[0076] In implementation, the minimum gap between the first structural model and the second structural model can be determined based on the model to be tested, the target force points of the wheels connected to the target suspension, and the force requirements corresponding to each target force point. For example, the motion state of the wheel under the predetermined working condition can be simulated based on the target force points of the wheels connected to the target suspension and the force requirements corresponding to each target force point, and the minimum gap between the first structural model and the second structural model during the wheel motion can be simulated based on the model to be tested, so that the gap of the target suspension can be quickly and accurately checked.

[0077] In a feasible implementation manner, based on the predetermined working condition, determining the force requirements corresponding to each of the target force points includes:

[0078] Based on the target driving acceleration information of the vehicle under the predetermined working condition and the mechanical characteristics of the vehicle under a fully loaded state, the force requirements corresponding to each of the target force points are determined.

[0079] Specifically, for any predetermined working condition, the target driving acceleration information of the vehicle under the predetermined working condition can be pre-configured, and the target driving acceleration information of the vehicle under the predetermined working condition can be used to characterize the acceleration performance of the vehicle under the predetermined working condition. Wherein, the target driving acceleration information corresponding to the vehicle under different predetermined working conditions can be different. In implementation, the target driving acceleration information under different predetermined working conditions can be pre-configured based on the test data or historical driving data of the vehicle. For example, the target driving acceleration information can be an acceleration coefficient, that is, the speed change caused by the unit throttle opening of the vehicle under the predetermined working condition, where, for different predetermined working conditions, the absolute value of the acceleration coefficient of the vehicle in the X direction can be in the range of 0 to 6, the absolute value of the acceleration coefficient of the vehicle in the Y direction can be in the range of 0 to 4, and the absolute value of the acceleration coefficient of the vehicle in the Z direction can be in the range of 1 to 4.

[0080] The mechanical characteristics of the vehicle in a fully loaded state may include characteristics that affect the stress state of the target stress point of the wheel connected to the target suspension in the fully loaded state. For example, the mechanical characteristics of the vehicle in a fully loaded state may include the wheel load of the vehicle in a fully loaded state, the center of mass height of the vehicle in a fully loaded state, etc.

[0081] In implementation, the predetermined corresponding relationship under each predetermined working condition can be pre-configured. For any predetermined working condition, the predetermined corresponding relationship under the predetermined working condition can be used to characterize the corresponding relationship between the driving acceleration information of the vehicle, the mechanical characteristics of the vehicle under a fully loaded state, and the force requirements corresponding to each target force point under the predetermined working condition. Thus, based on the target driving acceleration of the vehicle under the predetermined working condition, the mechanical characteristics of the vehicle under a fully loaded state, and the predetermined corresponding relationship under the predetermined working condition, the force requirements corresponding to each target force point under the predetermined working condition can be quickly and accurately determined.

[0082] As an optional implementation, under the forward braking condition, the target force point may include a tire contact point, and the force requirement of the tire contact point may be as shown in formula (1):

[0083]

[0084] Under extreme steering conditions, the target force point may include the tire contact point. For example, taking extreme right steering as an example, the force requirements of the tire contact points of the left wheel and the right wheel can be shown as formula (2) and formula (3) respectively:

[0085]

[0086]

[0087] Under the impact conditions of reversing step, straight driving over pothole, forward driving without pothole, reversing without pothole and non-directional curb impact, the target force points may include the wheel center and the tire contact point. The force requirements of the wheel center and the tire contact point can be shown as formula (4) and formula (5) respectively:

[0088]

[0089] Under the condition of turning over a pothole, the target force points may include the wheel center and the tire contact point. The force requirements of the wheel center and the tire contact point can be expressed as formula (6) and formula (7) respectively:

[0090]

[0091] Under the condition of the vehicle passing over a bump, the target force point may include the tire contact point, and the force requirement of the tire contact point can be expressed as formula (8):

[0092]

[0093] In the above formulas (1) to (8), F x 、F y and F z are the forces on the tire contact point in the X, Y and Z directions respectively; F x轮心 、F y轮心 and F z轮心 are the forces on the wheel center in the X, Y and Z directions respectively; F x左 、F y左 and F z左 are the forces on the tire contact point in the X, Y and Z directions when the wheel connected to the target suspension is the left wheel; F x右 、F y右 and F z右 When the wheel connected to the target suspension is the right wheel, the forces at the tire contact point in the X, Y and Z directions are respectively; GVW is the fully loaded mass, in kg; WR is the fully loaded rear wheel load, in N; g is the acceleration due to gravity, g = 9.8 m / s 2 ; B p is the front wheel braking force coefficient; α x , α y and α z are the acceleration coefficients in the X, Y and Z directions respectively; H is the height of the center of mass with full load; L is the wheelbase of the vehicle; TR is the rear track.

[0094] In a feasible implementation manner, determining the minimum gap between the first structural model and the second structural model under the predetermined working condition based on the model to be tested, the target force points, and the force requirements corresponding to each of the target force points includes:

[0095] Inputting the model to be tested into a clearance verification model of the vehicle, wherein the clearance verification model includes a wheel model corresponding to a wheel connected to the target suspension;

[0096] Based on the force requirements corresponding to each of the target force points, the gap verification model is controlled to simulate the predetermined working condition to obtain the minimum gap between the first structural model and the second structural model under the predetermined working condition.

[0097] Specifically, the gap verification model of the vehicle can be used to simulate the gap between the first structural model and the second structural model to obtain the minimum gap between the first structural model and the second structural model. The gap verification model of the vehicle may include a wheel model corresponding to the wheel connected to the target suspension, and the wheel model may be used to simulate the motion state of the wheel under different predetermined working conditions. In addition, the gap verification model may also include a suspension model corresponding to the target suspension, and the suspension model may be used to simulate the position changes of various components in the target suspension as the connected wheels move. In implementation, the suspension model and the wheel model may be connected based on the connection relationship between the target suspension and the corresponding wheels in the vehicle.

[0098] In the process of determining the minimum gap between the first structural model and the second structural model under predetermined working conditions, the model to be tested can be input into the gap verification model of the vehicle. For example, the suspension model in the gap verification model can be updated based on the model to be tested, so that the gap verification model includes the first structural model of the buffer vibration isolation structure under the target force and the second structural model corresponding to the predetermined structure.

[0099] Therefore, based on the force requirements corresponding to each target force point, the wheel model in the gap verification model can be controlled to simulate the movement state of the wheel under the predetermined working condition, and during the movement of the wheel model, the suspension model in the gap verification model can be used to simulate the position changes of each component in the target suspension, and then the minimum gap between the first structural model and the second structural model under the predetermined working condition is obtained, so that the minimum gap between the first structural model and the second structural model under each predetermined working condition can be simulated quickly and accurately, further improving the reliability of the gap verification result of the target suspension.

[0100] In a feasible implementation manner, the design method of the target suspension includes:

[0101] Based on the target correspondence relationship of the target suspension, determining the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension; the target correspondence relationship includes the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at different displacements of the target suspension;

[0102] The target suspension is constructed based on target stiffnesses of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension.

[0103] Specifically, the target correspondence of the target suspension may include the target stiffness of the leaf spring assembly and the target stiffness of the buffer vibration isolation structure under different displacements of the target suspension. In implementation, the target stiffness of the target suspension under different displacements may be determined based on the target wheel jump of the wheels connected to the target suspension under different wheel loads when the vehicle is stationary, and the target stiffness of the leaf spring assembly and the target stiffness of the buffer vibration isolation structure under different displacements of the target suspension may be determined based on the target stiffness of the target suspension under different displacements and suspension design requirements, etc. The stiffness of the target suspension may include the sum of the stiffness of the leaf spring assembly and the stiffness of the buffer vibration isolation structure.

[0104] For example, when the vehicle is at rest, the wheel load of the wheel connected to the target suspension and the load of the target suspension may be approximately the same. At the same time, the displacement of the end of the target suspension may be determined based on the lever ratio of the target suspension and the target wheel jump of the wheel connected to the target suspension. Thus, the ratio of the load of the target suspension to the displacement of the end of the target suspension may be used as the stiffness of the target suspension.

[0105] In implementation, the target stiffness of the leaf spring assembly and the target stiffness of the buffer vibration isolation structure under different displacements of the target suspension can be determined based on the structural characteristics of the leaf spring assembly and the buffer vibration isolation structure and the suspension design requirements, so that the target correspondence of the target suspension can be determined quickly and effectively. For example, the target correspondence of the target suspension can be as follows: Figure 3 shown.

[0106] The predetermined displacement can be set according to actual needs. For example, the predetermined displacement can be determined according to different load states of the vehicle. The predetermined displacement can include the displacement of the target suspension when the buffer and vibration isolation structure begins to deform. Figure 3 Taking the target correspondence relationship shown as an example, the predetermined displacement amounts may include 10 mm, 22 mm, and 30 mm.

[0107] In implementation, the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at each predetermined displacement of the target suspension can be determined based on the target stiffness of the leaf spring assembly and the target stiffness of the buffer vibration isolation structure at different displacements of the target suspension in the target correspondence.

[0108] Thus, the target suspension can be constructed based on the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at each predetermined displacement of the target suspension. For example, the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at each predetermined displacement of the target suspension can be simulated through a material model, a structural model, etc. to obtain a target suspension that meets the target correspondence relationship, so that the target suspension can be constructed quickly and effectively.

[0109] It is understandable that when the gap check result indicates that the gap check of the target suspension fails, the target suspension may be updated based on the target corresponding relationship, and the gap check may be performed again on the updated target suspension until the gap check result indicates that the gap check of the target suspension succeeds.

[0110] Exemplary Devices

[0111] In an exemplary embodiment of the present specification, a suspension clearance calibration device is also provided. The target suspension of the vehicle includes a leaf spring assembly and a buffer vibration isolation structure. The leaf spring assembly includes two leaf spring bodies. The buffer vibration isolation structure is arranged between the two leaf spring bodies. Figure 4 As shown, the device comprises:

[0112] The first processing module 401 is used to obtain a to-be-tested model corresponding to the target suspension, wherein the to-be-tested model includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure; the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure;

[0113] A second processing module 402 is used to determine the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions based on the model to be tested;

[0114] The third processing module 403 is used to determine the clearance verification result of the target suspension based on the size relationship between the minimum clearance and the predetermined clearance threshold under each of the predetermined working conditions.

[0115] In a feasible implementation manner, the target force includes a first force generated on the buffer vibration isolation structure when the leaf spring body is misaligned, and / or a second force determined based on a target bearing capacity of the target suspension.

[0116] In a feasible implementation manner, the first processing module 401 is specifically configured to:

[0117] Obtaining a threshold value of a size change of the buffer vibration isolation structure under the target force;

[0118] Based on a threshold value of a size change of the buffer and vibration isolation structure, a first structural model of the buffer and vibration isolation structure under the target force is determined.

[0119] In a feasible implementation manner, the second processing module 402 is specifically configured to:

[0120] Based on the predetermined working condition, determining target force points of the wheels connected to the target suspension and force requirements corresponding to the target force points;

[0121] Based on the model to be tested, the target force points and the force requirements corresponding to each of the target force points, the minimum gap between the first structural model and the second structural model under the predetermined working condition is determined.

[0122] In a feasible implementation manner, the second processing module 402 is specifically configured to:

[0123] Based on the target driving acceleration information of the vehicle under the predetermined working condition and the mechanical characteristics of the vehicle under a fully loaded state, the force requirements corresponding to each of the target force points are determined.

[0124] In a feasible implementation manner, the second processing module 402 is specifically configured to:

[0125] Inputting the model to be tested into a clearance verification model of the vehicle, wherein the clearance verification model includes a wheel model corresponding to a wheel connected to the target suspension;

[0126] Based on the force requirements corresponding to each of the target force points, the gap verification model is controlled to simulate the predetermined working condition to obtain the minimum gap between the first structural model and the second structural model under the predetermined working condition.

[0127] In a feasible implementation manner, the predetermined operating condition includes a condition in which the impact force received by the vehicle during operation is greater than a predetermined impact force.

[0128] In a feasible embodiment, a fourth processing module is further included, and the fourth processing module is used to:

[0129] Based on the target correspondence relationship of the target suspension, determining the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension; the target correspondence relationship includes the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at different displacements of the target suspension;

[0130] The target suspension is constructed based on target stiffnesses of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension.

[0131] The suspension clearance check device provided in this embodiment belongs to the same application concept as the suspension clearance check method provided in the above embodiments of this application, and can execute the suspension clearance check method provided in any of the above embodiments of this application, and has the corresponding functional modules and beneficial effects of executing the suspension clearance check method. For technical details not fully described in this embodiment, please refer to the specific processing content of the suspension clearance check method provided in the above embodiments of this application, and will not be repeated here.

[0132] Exemplary Devices

[0133] In an exemplary embodiment of the present specification, an electronic device is also provided, the electronic device comprising at least one processor and at least one memory, the memory storing a computer program, and the computer program, when executed by the processor, implements the suspension clearance calibration method as described in any of the above embodiments.

[0134] Exemplary computer program products and storage media

[0135] In addition to the above-mentioned methods and devices, the suspension clearance calibration method provided in the embodiments of the present specification may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the suspension clearance calibration method according to various embodiments of the present specification described in the above-mentioned "Exemplary Method" section of the present specification.

[0136] The computer program product can be written in any combination of one or more programming languages ​​to write program codes for executing the operations of the embodiments of this specification, and the programming languages ​​include object-oriented programming languages, such as Java, C++, etc., and also include conventional procedural programming languages, such as "C" language or similar programming languages.

[0137] In addition, an embodiment of the present specification also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the suspension clearance calibration method according to various embodiments of the present specification described in the above "Exemplary Method" section of the present specification.

[0138] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this specification can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0139] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] The above-mentioned embodiments only express several implementation methods of this specification, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the solutions provided by the embodiments of this specification. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this specification, which all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be based on the attached claims.

Claims

1. A suspension clearance calibration method, characterized in that: The target suspension of the vehicle includes a leaf spring assembly and a buffer vibration isolation structure, wherein the leaf spring assembly includes two leaf spring bodies, and the buffer vibration isolation structure is arranged between the two leaf spring bodies. The method includes: Acquire a model to be tested corresponding to the target suspension, wherein the model to be tested includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure; the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure; Based on the model to be tested, respectively determining the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions; Based on the size relationship between the minimum gap and the predetermined gap threshold under each of the predetermined working conditions, the gap verification result of the target suspension is determined.

2. The method according to claim 1, characterized in that The target force includes a first force generated on the buffer vibration isolation structure when the leaf spring body is misaligned, and / or a second force determined based on a target bearing capacity of the target suspension.

3. The method according to claim 1, characterized in that The obtaining the to-be-tested model corresponding to the target suspension includes: Obtaining a threshold value of a size change of the buffer vibration isolation structure under the target force; Based on a threshold value of a size change of the buffer and vibration isolation structure, a first structural model of the buffer and vibration isolation structure under the target force is determined.

4. The method according to claim 1, characterized in that: The step of respectively determining the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions based on the model to be tested includes: Based on the predetermined working condition, determining target force points of the wheels connected to the target suspension and force requirements corresponding to the target force points; Based on the model to be tested, the target force points and the force requirements corresponding to each of the target force points, the minimum gap between the first structural model and the second structural model under the predetermined working condition is determined.

5. The method according to claim 4, characterized in that Based on the predetermined working condition, determining the force requirements corresponding to each target force point includes: Based on the target driving acceleration information of the vehicle under the predetermined working condition and the mechanical characteristics of the vehicle under a fully loaded state, the force requirements corresponding to each of the target force points are determined.

6. The method according to claim 4, characterized in that The determining, based on the model to be tested, the target force points, and the force requirements corresponding to each of the target force points, the minimum gap between the first structural model and the second structural model under the predetermined working condition includes: Inputting the model to be tested into a clearance verification model of the vehicle, wherein the clearance verification model includes a wheel model corresponding to a wheel connected to the target suspension; Based on the force requirements corresponding to each of the target force points, the gap verification model is controlled to simulate the predetermined working condition to obtain the minimum gap between the first structural model and the second structural model under the predetermined working condition.

7. The method according to claim 1, characterized in that The predetermined operating condition includes a condition in which the impact force received by the vehicle during operation is greater than a predetermined impact force.

8. The method according to any one of claims 1 to 7, characterized in that: The design method of the target suspension includes: Based on the target correspondence relationship of the target suspension, determining the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension; the target correspondence relationship includes the target stiffness of the leaf spring assembly and the buffer vibration isolation structure at different displacements of the target suspension; The target suspension is constructed based on target stiffnesses of the leaf spring assembly and the buffer vibration isolation structure at multiple predetermined displacements of the target suspension.

9. A suspension clearance checking device, characterized in that: The target suspension of the vehicle includes a leaf spring assembly and a buffer vibration isolation structure, wherein the leaf spring assembly includes two leaf spring bodies, and the buffer vibration isolation structure is arranged between the two leaf spring bodies. The device includes: A first processing module is used to obtain a to-be-tested model corresponding to the target suspension, wherein the to-be-tested model includes a first structural model of the buffer vibration isolation structure under a target force and a second structural model corresponding to a predetermined structure; the predetermined structure includes a structure on the vehicle adjacent to the buffer vibration isolation structure; A second processing module, configured to determine, based on the model to be tested, the minimum gap between the first structural model and the second structural model under a plurality of predetermined working conditions; The third processing module is used to determine the clearance verification result of the target suspension based on the size relationship between the minimum clearance and the predetermined clearance threshold under each of the predetermined working conditions.

10. An electronic device, characterized in that: The electronic device comprises at least one processor and at least one memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the suspension clearance calibration method according to any one of claims 1 to 8 is implemented.

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