CN-122016340-A - Virtual test method for stability of vehicle crosswind based on driving simulator

CN122016340ACN 122016340 ACN122016340 ACN 122016340ACN-122016340-A

Abstract

The invention relates to the technical field of vehicle tests, in particular to a vehicle crosswind stability virtual test method based on a driving simulator. Firstly, constructing a virtual test scene and a gust model of a fan array according to a preset crosswind test working condition standard. And (3) according to the virtual test scene, performing a vehicle crosswind stability test, and applying lateral wind force to the test vehicle based on the gust model. And applying lateral wind force to the vehicle multi-body dynamics model to determine vehicle operation data of the vehicle multi-body dynamics model. The vehicle operation data is synchronously fed back to the driving simulator so that the driver can determine the operation condition after the lateral wind power is applied. The method fills the blank of virtualization of the crosswind stability test, forms a virtual crosswind test in the early stage of vehicle design and development, and can verify and regulate the crosswind stability of the vehicle dynamics model in the early stage of development, thereby shortening the development period and reducing the later-stage reconstruction cost.

Inventors

ZHANG QIANWEN
WANG QINGYANG
DUAN MENGHUA
HE XIANZHONG
BU HAN
LI LINHUA
HUANG TAO
HOU CHANGMENG
JIANG JUNBO
LIU GUIJUN
ZHANG CHAO
XU LEI
TANG JUN

Assignees

中国汽车工程研究院股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260224

Claims (10)

1. A vehicle crosswind stability virtual test method based on a driving simulator is characterized by comprising the following steps: s1, constructing a virtual test scene comprising a fan array and a test vehicle in first simulation software according to a preset crosswind test condition standard; S2, according to the virtual test scene, carrying out a vehicle crosswind stability test on the test vehicle, and determining the lateral wind force applied to the test vehicle in the crosswind area based on the gust model when the test vehicle is driven into the crosswind area caused by the fan array; s3, in second simulation software, applying the lateral wind force to a pre-constructed vehicle multi-body dynamics model, and determining vehicle operation data of the vehicle multi-body dynamics model; S4, synchronously feeding back the vehicle operation data to a driving simulator so that a driver in the driving simulator can determine the operation condition of the vehicle multi-body dynamics model after the vehicle multi-body dynamics model receives the lateral wind force, wherein the vehicle multi-body dynamics model is in communication connection with the driving simulator, and the vehicle multi-body dynamics model is a simulation model controlled by the driving simulator.
2. The virtual test method for the crosswind stability of the vehicle based on the driving simulator as claimed in claim 1, wherein the expression of the gust model in S1 is: Wherein, the The crosswind speed for the fan array, The time for carrying out a vehicle crosswind stability test for the test vehicle; The time for the test vehicle to drive into a crosswind area caused by the fan array; the time for the test vehicle to exit the crosswind area caused by the fan array; The time required for the preset crosswind speed to increase from zero to the maximum magnitude of the crosswind speed (or decrease from the maximum magnitude of the crosswind speed to zero); the maximum amplitude of the wind speed is the preset crosswind.
3. The virtual test method for the crosswind stability of the vehicle based on the driving simulator according to claim 2, wherein the vehicle multi-body dynamics model in S3 comprises a vehicle body model, a suspension model, a steering model and a tire model.
4. A virtual test method for vehicle crosswind stability based on a driving simulator as claimed in claim 3, wherein the suspension model is a high frequency bushing model.
5. A virtual test method for vehicle crosswind stability based on a driving simulator as claimed in claim 3, wherein the tire model is a magic formula model.
6. The virtual test method for vehicle crosswind stability based on driving simulator as claimed in claim 1, further comprising step S5: acquiring an evaluation result of a driver in the driving simulator on the vehicle crosswind stability test, wherein the evaluation result comprises a lateral stability score and a driving confidence score; And determining a subjective and objective consistency correlation result of the vehicle crosswind stability test according to the evaluation result and the vehicle operation data.
7. A virtual test method for vehicle crosswind stability based on a driving simulator as claimed in claim 2 or 3, wherein S3 specifically comprises: in the first simulation software, after the lateral wind force is applied to the test vehicle, determining resistance, lateral force, lift force, pitching moment, rolling moment and yaw moment of the test vehicle; In a second simulation software, the drag force, the lateral force, the lift force, the pitch moment, the roll moment, the yaw moment are applied to a pre-built vehicle multi-body dynamics model, and vehicle operation data of the vehicle multi-body dynamics model are determined, wherein the vehicle operation data comprise yaw rate, lateral acceleration, steering wheel angle, longitudinal vehicle speed, lateral offset, roll angle and side offset angle.
8. Vehicle crosswind stability virtual test device based on driving simulator, characterized by comprising: The system comprises a building module, a wind gust model and a wind gust model, wherein the building module is used for building a virtual test scene comprising a wind gust array and a test vehicle in first simulation software according to a preset crosswind test working condition standard; the first test module is used for carrying out a vehicle crosswind stability test on the test vehicle according to the virtual test scene, and determining the lateral wind force applied to the test vehicle in the lateral wind area based on the gust model when the test vehicle enters the lateral wind area caused by the fan array; the second test module is used for applying the lateral wind force to a pre-constructed vehicle multi-body dynamics model in second simulation software and determining vehicle operation data of the vehicle multi-body dynamics model; and the feedback module is used for synchronously feeding back the vehicle operation data to a driving simulator so that a driver in the driving simulator can determine the operation condition of the vehicle multi-body dynamics model after the vehicle multi-body dynamics model receives the lateral wind force, wherein the vehicle multi-body dynamics model is in communication connection with the driving simulator, and the vehicle multi-body dynamics model is a simulation model controlled by the driving simulator.
9. A computer readable storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, implements the method of any of the preceding claims 1-7.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any of the preceding claims 1-7 when executing the program.

Description

Virtual test method for stability of vehicle crosswind based on driving simulator Technical Field The specification relates to the technical field of vehicle tests, in particular to a vehicle crosswind stability virtual test method based on a driving simulator. Background Along with the continuous progress of the automobile industry towards high speed, light weight and intelligent, the aerodynamic stability of the automobile, especially the dynamic response and safety performance under the condition of sudden side wind, has become one of the key indexes for measuring the design level of modern automobiles. The stability of the crosswind not only directly influences the riding comfort, but also is concerned with the driving safety in a high-speed driving scene. At present, the research on the stability of the crosswind of the vehicle mainly depends on methods such as road tests, wind tunnel tests and the like. Currently, the main current research method for the stability of the crosswind of a vehicle is a road test. According to national standards, the road test simulates the lateral wind load in a test field by means of a fixed fan array, and the sensor is used for collecting the vehicle motion state data so as to evaluate the lateral wind interference resistance. However, in practical application, the method is obviously influenced by subjective and objective factors such as natural environment (such as atmospheric turbulence and temperature and humidity change), road surface condition, driver operation and the like, so that the coverage range of test working conditions is limited, and the data repeatability and consistency are low. In addition, in the traditional V-shaped development flow, subjective evaluation is seriously dependent on physical sample vehicles, and can only be carried out in the middle and later stages of development. The perception feedback of a real driver cannot be introduced in the early development stage, so that the subjective evaluation link is seriously lagged, a series of problems such as prolonged development feedback period, rising of design change cost, disconnection of objective indexes and subjective experience and the like are caused, and the optimization depth and development efficiency of the vehicle crosswind stability design are seriously restricted. Therefore, the specification provides a vehicle crosswind stability virtual test method based on a driving simulator. Disclosure of Invention The specification provides a virtual test method for the stability of the crosswind of a vehicle based on a driving simulator, so as to partially solve the problems existing in the prior art. The technical scheme adopted in the specification is as follows: the specification provides a vehicle crosswind stability virtual test method based on a driving simulator, which comprises the following steps: s1, constructing a virtual test scene comprising a fan array and a test vehicle in first simulation software according to a preset crosswind test condition standard; S2, according to the virtual test scene, carrying out a vehicle crosswind stability test on the test vehicle, and determining the lateral wind force applied to the test vehicle in the crosswind area based on the gust model when the test vehicle is driven into the crosswind area caused by the fan array; s3, in second simulation software, applying the lateral wind force to a pre-constructed vehicle multi-body dynamics model, and determining vehicle operation data of the vehicle multi-body dynamics model; S4, synchronously feeding back the vehicle operation data to a driving simulator so that a driver in the driving simulator can determine the operation condition of the vehicle multi-body dynamics model after the vehicle multi-body dynamics model receives the lateral wind force, wherein the vehicle multi-body dynamics model is in communication connection with the driving simulator, and the vehicle multi-body dynamics model is a simulation model controlled by the driving simulator. According to the technical means, the method fills the blank of virtualization of the crosswind stability test, forms a virtual crosswind test in the early stage of vehicle design and development, and can verify and regulate the crosswind stability of a vehicle dynamics model (such as suspension, steering and ESP system parameters) in the early stage of development, so that the development period is shortened, and the later-stage reconstruction cost is reduced. By constructing the gust model through preset standards, the wind speed, the wind direction, the acting time and the spatial distribution can be accurately controlled, and the high consistency and the repeatability of the test conditions are realized. The high-fidelity coupling of aerodynamics and vehicle dynamics is achieved by simulating the unsteady aerodynamic forces generated by the fan array by a first simulation software (possibly CFD or dedicated wind farm software) and applying them as in