CN-122021408-A - In-vehicle wind noise evaluation method and device, computer device and storage medium

CN122021408ACN 122021408 ACN122021408 ACN 122021408ACN-122021408-A

Abstract

The disclosure relates to an in-vehicle wind noise evaluation method, an in-vehicle wind noise evaluation device, a computer device and a storage medium. The pneumatic noise in the automobile is achieved through the method, and the problem that the wind noise in the automobile cannot be accurately predicted by the automobile in the development and modeling stage is solved. The method comprises the steps of obtaining wind noise data of a basic vehicle matched with a development vehicle to be tested, obtaining wind noise increment of the development vehicle to be tested relative to the basic vehicle according to the external modeling data of the development vehicle to be tested and the wind noise data of the basic vehicle, and obtaining an in-vehicle wind noise prediction result of the development vehicle to be tested according to the wind noise increment. The technical scheme provided by the disclosure is suitable for vehicle development, and accurate and efficient modeling stage in-vehicle wind noise evaluation is realized.

Inventors

HUANG ZUOHUA
CAO YING
WANG YIFENG
YANG JIN
XIE DONGHANG

Assignees

奇瑞汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260106

Claims (10)

1. An in-vehicle wind noise assessment method, comprising: Acquiring wind noise data of a basic vehicle matched with a development vehicle to be tested; Acquiring wind noise increment of the to-be-detected development vehicle relative to the basic vehicle according to the external modeling data of the to-be-detected development vehicle and the wind noise data of the basic vehicle; And acquiring an in-car wind noise prediction result of the to-be-detected starting car according to the wind noise increment.
2. The in-vehicle wind noise assessment method according to claim 1, wherein the wind noise data includes at least any one or more of the following information of the base vehicle: the wind noise contribution weight coefficient of each key part, the first wind noise level of each key part and the actual wind noise measurement result in the vehicle under the driving working condition, The step of obtaining the wind noise increment of the to-be-detected development vehicle relative to the basic vehicle according to the external modeling data of the to-be-detected development vehicle and the wind noise data of the basic vehicle comprises the following steps: Based on steady-state calculation hydrodynamic force simulation and the external modeling data, obtaining a second wind noise level of each key part of the development vehicle to be tested; according to the first wind noise level and the second wind noise level, wind noise increment components of all key parts are calculated respectively; and acquiring the total wind noise increment of the to-be-detected development vehicle relative to the basic vehicle according to the wind noise increment of each key part.
3. The method for evaluating wind noise in a vehicle according to claim 2, wherein the step of obtaining the second wind noise level of each key part of the development vehicle to be tested based on the steady-state computational fluid dynamic simulation and the exterior modeling data comprises: calculating a steady-state external flow field based on the steady-state calculation hydrodynamic force simulation; calculating to obtain flow state parameters according to the outflow field and the outer modeling data, wherein the flow state parameters at least comprise any one or more of flow speed, pressure, a surface sound source and a bulk sound source; And acquiring the second wind noise level of each key part of the development vehicle to be tested according to the flow state parameters.
4. The in-vehicle wind noise evaluation method according to claim 2, wherein the step of calculating wind noise delta components of the respective key parts from the first wind noise level and the second wind noise level, respectively, comprises: calculating the wind noise increment components of each key part of the to-be-detected driving car relative to the basic car according to the following expression: , Wherein, the For the wind noise delta component of the ith critical part, The contribution of the ith key part of the development vehicle to be tested to the wind noise in the vehicle, The sum first wind noise level being a contribution of an ith critical portion of the base vehicle to wind noise in the vehicle, For the second wind noise level at the ith critical location, The first wind noise level, i, being the i < th > critical part 1。
5. The method for evaluating wind noise in a vehicle according to claim 4, wherein the step of obtaining the total wind noise increment of the development vehicle to be tested relative to the basic vehicle according to the wind noise increment of each key part comprises: calculating the overall wind noise delta according to the following expression: , Wherein, the For the overall wind noise delta, N is the number of critical sites, The wind noise of the ith critical part is contributed with a weight coefficient, For the wind noise delta component of the ith critical part, The contribution of the ith key part of the development vehicle to be tested to the wind noise in the vehicle, The sum first wind noise level being a contribution of an ith critical portion of the base vehicle to wind noise in the vehicle, For the second wind noise level at the ith critical location, The first wind noise level, i, being the i < th > critical part 1。
6. The in-vehicle wind noise evaluation method according to claim 2, characterized in that the method further comprises: Obtaining wind noise source flow field calculation values of at least one key part of a plurality of vehicle types through steady-state calculation fluid dynamic simulation; acquiring wind noise data in the road actual measurement vehicles of the multiple vehicle types; According to wind noise source flow field calculation values of at least one key part of the multiple vehicle types and the wind noise data in the actually measured vehicle of the road, constructing a training data set; and training the neural network model based on the training data set to obtain a weight model, wherein the weight model is used for obtaining corresponding wind noise contribution weight coefficients according to wind noise source flow field calculation values of each key part of the vehicle.
7. The method for evaluating the wind noise in a vehicle according to claim 1, wherein the step of obtaining the prediction result of the wind noise in the vehicle to be tested according to the wind noise increment comprises: and superposing the wind noise increment on the basis of the in-vehicle wind noise actual value of the basic vehicle to obtain the in-vehicle wind noise prediction result of the to-be-detected development vehicle.
8. An in-vehicle wind noise evaluation device, comprising: The basic vehicle data acquisition module is used for acquiring wind noise data of the basic vehicle matched with the development vehicle to be detected; the wind noise increment acquisition module is used for acquiring the wind noise increment of the to-be-detected starting vehicle relative to the basic vehicle according to the external modeling data of the to-be-detected starting vehicle and the wind noise data of the basic vehicle; and the in-vehicle wind noise prediction module is used for acquiring an in-vehicle wind noise prediction result of the to-be-detected development vehicle according to the wind noise increment.
9. A computer apparatus, comprising: A processor; A memory for storing processor-executable instructions; Wherein the processor is configured to perform the in-vehicle wind noise assessment method according to any one of claims 1 to 7.
10. A non-transitory computer readable storage medium, wherein instructions in the storage medium, when executed by a processor of a computer, enable the computer to perform the in-vehicle wind noise assessment method according to any one of claims 1 to 7.

Description

In-vehicle wind noise evaluation method and device, computer device and storage medium Technical Field The disclosure relates to the technical field of aerodynamic noise in automobiles, in particular to an in-automobile wind noise evaluation method, an in-automobile wind noise evaluation device, a computer device and a storage medium. Background With the development of the automobile industry and the increasing demand of consumers for ride comfort, in-car noise control (especially wind noise) has become an important issue for vehicle design. The popularization of the electric automobile weakens the noise of the traditional engine, so that the wind noise ratio exceeds 60% during high-speed running, the user's perception of silence and brand praise are directly influenced, and the popularization of the automatic driving technology is also in urgent need of reducing the interference of the wind noise on a voice interaction system (the error rate can be increased by more than 10%). In-vehicle wind noise is usually predicted by adopting a simulation analysis method, such as Computational Fluid Dynamics (CFD) calculation fluid state, adaptive noise cancellation (ACC) calculation noise source and Statistical Energy Analysis (SEA) method calculation noise source transmission, provided that fine vehicle body profile data, detailed geometric data, material parameters or performance parameters of a vehicle body structure and an acoustic package are required. The calculation amount is large, the efficiency is low, and the simulation precision is affected by the limitation of a plurality of uncertain factors. In the development modeling stage of the passenger car, the wind noise in the car cannot be predicted because of no data of a car body structure and an acoustic package, or the wind noise in the car can be predicted by a simple car model, the prediction result and the actual measurement difference are very large, whether the modeling achieves the target wind noise in the car cannot be predicted correctly, and modeling improvement based on the wind noise cannot be realized. In summary, the vehicle interior wind noise cannot be accurately predicted for the vehicle in the modeling stage of development. Disclosure of Invention In order to overcome the problems in the related art, the present disclosure provides an in-vehicle wind noise evaluation method, apparatus, computer apparatus, and storage medium. The wind noise increment of the development vehicle to be detected and the basic vehicle is used for completing the wind noise evaluation prediction in the development vehicle on the basis of the wind noise data of the basic vehicle, so that the problem that the wind noise in the development vehicle in the modeling stage cannot be accurately predicted is solved, and the accurate and efficient wind noise evaluation in the modeling stage is realized. According to a first aspect of embodiments of the present disclosure, there is provided an in-vehicle wind noise evaluation method, including: Acquiring wind noise data of a basic vehicle matched with a development vehicle to be tested; Acquiring wind noise increment of the to-be-detected development vehicle relative to the basic vehicle according to the external modeling data of the to-be-detected development vehicle and the wind noise data of the basic vehicle; And acquiring an in-car wind noise prediction result of the to-be-detected starting car according to the wind noise increment. Further, the wind noise data at least comprises any one or more of the following information of the basic vehicle: the wind noise contribution weight coefficient of each key part, the first wind noise level of each key part and the actual wind noise measurement result in the vehicle under the driving working condition, The step of obtaining the wind noise increment of the to-be-detected development vehicle relative to the basic vehicle according to the external modeling data of the to-be-detected development vehicle and the wind noise data of the basic vehicle comprises the following steps: Based on steady-state calculation hydrodynamic force simulation and the external modeling data, obtaining a second wind noise level of each key part of the development vehicle to be tested; according to the first wind noise level and the second wind noise level, wind noise increment components of all key parts are calculated respectively; and acquiring the total wind noise increment of the to-be-detected development vehicle relative to the basic vehicle according to the wind noise increment of each key part. Further, the step of obtaining the second wind noise level of each key part of the development vehicle to be tested based on the steady-state calculation hydrodynamic simulation and the external modeling data includes: calculating a steady-state external flow field based on the steady-state calculation hydrodynamic force simulation; calculating to obtain flow state parameters according to the outflow