CN-122020845-A - Whole vehicle wind noise calculation method, system, equipment and computer readable storage medium

CN122020845ACN 122020845 ACN122020845 ACN 122020845ACN-122020845-A

Abstract

A method, a system, equipment and a computer readable storage medium for calculating wind noise of a whole vehicle relate to the technical field of vehicle performance and specifically comprise the steps of obtaining first wind noise data corresponding to real-time vehicle speed in a downwind state and second wind noise data corresponding to real-time vehicle speed in an upwind state, dividing the first wind noise data and the second wind noise data based on preset octaves to obtain third wind noise data and fourth wind noise data of a plurality of target octaves, determining a target index and an interference noise value based on the third wind noise data and the fourth wind noise data of the target octaves, the real-time vehicle speed and the real-time wind speed for each target octave, determining wind noise data of the target octaves based on the target index, the interference noise value and the real-time vehicle speed, wherein the target index represents a nonlinear relation between wind noise and vehicle speed, and determining target wind noise data corresponding to the real-time vehicle speed according to the wind noise data of all the target octaves. The application can accurately reflect the real wind noise of the whole vehicle.

Inventors

ZHANG HAOZHE
XU JINGLIN
HE YIMING
LIU FANG
ZHENG JINYAN

Assignees

东风汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260106

Claims (10)

1. The whole vehicle wind noise calculation method is characterized by comprising the following steps of: acquiring first wind noise data corresponding to the real-time vehicle speed in the downwind state and second wind noise data corresponding to the real-time vehicle speed in the upwind state; Dividing the first wind noise data based on a preset octave to obtain third wind noise data corresponding to a plurality of target octave segments, and dividing the second wind noise data based on a preset octave to obtain fourth wind noise data corresponding to a plurality of target octave segments, wherein the target octave segments are frequency bands with a preset center frequency as a center, and the preset center frequency is determined based on the preset octaves; For each target octave segment, determining a target index and an interference noise value based on third wind noise data and fourth wind noise data of the target octave segment, a real-time vehicle speed and a real-time wind speed, and determining wind noise data of the target octave segment based on the target index, the interference noise value and the real-time vehicle speed, wherein the target index represents a nonlinear relation between wind noise and vehicle speed; and determining target wind noise data corresponding to the real-time vehicle speed according to the wind noise data of all the target octave segments.
2. The method for calculating the wind noise of the whole vehicle according to claim 1, wherein the determining the target index and the interference noise value based on the third wind noise data and the fourth wind noise data of the target octave segment, the real-time vehicle speed and the real-time wind speed comprises: substituting the third wind noise data, the fourth wind noise data, the real-time vehicle speed and the real-time wind speed into the following calculation formula to obtain a target index and an interference noise value, wherein the calculation formula is as follows: In the formula, A target index of an ith target octave segment; an interference noise value of the ith target octave segment; third wind noise data of the ith target octave segment; Fourth wind noise data of the ith target octave segment; The real-time vehicle speed is obtained; Is the real-time wind speed.
3. The method for calculating wind noise of a whole vehicle according to claim 1, wherein the determining wind noise data of a target octave based on a target index, an interference noise value and a real-time vehicle speed comprises: Substituting the target index, the interference noise value and the real-time vehicle speed into the following calculation formula to obtain wind noise data of the target octave section, wherein the calculation formula is as follows: In the formula, A target index of an ith target octave segment; an interference noise value of the ith target octave segment; The real-time vehicle speed is obtained; And wind noise data corresponding to the ith target octave segment.
4. The method for calculating the wind noise of the whole vehicle according to claim 1, wherein the determining the target wind noise data corresponding to the real-time vehicle speed according to the wind noise data of all the target octaves comprises: Substituting the wind noise data of each target octave section into the following calculation formula to obtain target wind noise data corresponding to the real-time vehicle speed, wherein the calculation formula is as follows: In the formula, Wind noise data corresponding to the ith target octave segment; is target wind noise data corresponding to the real-time vehicle speed.
5. The utility model provides a whole car wind noise computing system which characterized in that, whole car wind noise computing system includes: The first processing module is used for acquiring first wind noise data corresponding to the real-time vehicle speed in the downwind state and second wind noise data corresponding to the real-time vehicle speed in the upwind state; The second processing module is used for dividing the first wind noise data based on a preset octave to obtain third wind noise data corresponding to a plurality of target octave segments, and dividing the second wind noise data based on the preset octave to obtain fourth wind noise data corresponding to the plurality of target octave segments, wherein the target octave segments are frequency bands with preset center frequency as the center, and the preset center frequency is determined based on the preset octaves; the third processing module is used for determining a target index and an interference noise value based on third wind noise data and fourth wind noise data of the target octave section, a real-time vehicle speed and a real-time wind speed respectively aiming at each target octave section, and determining the wind noise data of the target octave section based on the target index, the interference noise value and the real-time vehicle speed, wherein the target index represents a nonlinear relation between wind noise and vehicle speed; and the fourth processing module is used for determining target wind noise data corresponding to the real-time vehicle speed according to the wind noise data of all the target octave segments.
6. The vehicle wind noise computing system of claim 5, wherein the third processing module is specifically configured to: substituting the third wind noise data, the fourth wind noise data, the real-time vehicle speed and the real-time wind speed into the following calculation formula to obtain a target index and an interference noise value, wherein the calculation formula is as follows: In the formula, A target index of an ith target octave segment; an interference noise value of the ith target octave segment; third wind noise data of the ith target octave segment; Fourth wind noise data of the ith target octave segment; The real-time vehicle speed is obtained; Is the real-time wind speed.
7. The vehicle wind noise computing system of claim 5, wherein the third processing module is further specifically configured to: Substituting the target index, the interference noise value and the real-time vehicle speed into the following calculation formula to obtain wind noise data of the target octave section, wherein the calculation formula is as follows: In the formula, A target index of an ith target octave segment; an interference noise value of the ith target octave segment; The real-time vehicle speed is obtained; And wind noise data corresponding to the ith target octave segment.
8. The vehicle wind noise computing system of claim 5, wherein the fourth processing module is specifically configured to: Substituting the wind noise data of each target octave section into the following calculation formula to obtain target wind noise data corresponding to the real-time vehicle speed, wherein the calculation formula is as follows: In the formula, Wind noise data corresponding to the ith target octave segment; is target wind noise data corresponding to the real-time vehicle speed.
9. A vehicle wind noise calculation device, characterized in that it comprises a processor, a memory, and a vehicle wind noise calculation program stored on the memory and executable by the processor, wherein the vehicle wind noise calculation program, when executed by the processor, implements the steps of the vehicle wind noise calculation method according to any one of claims 1 to 4.
10. A computer readable storage medium, wherein a vehicle wind noise calculation program is stored on the computer readable storage medium, wherein the vehicle wind noise calculation program, when executed by a processor, implements the steps of the vehicle wind noise calculation method according to any one of claims 1 to 4.

Description

Whole vehicle wind noise calculation method, system, equipment and computer readable storage medium Technical Field The application relates to the technical field of vehicle performance, in particular to a method, a system, equipment and a computer readable storage medium for calculating wind noise of a whole vehicle. Background With the continued development of the automotive industry, wind noise issues have been an important challenge in automotive noise control. Especially in road tests, the change of wind speed and wind direction often affects the accuracy of test results, so how to obtain more accurate wind noise data under different driving conditions becomes a key requirement in the technical field. In the related art, road experiments are usually carried out by adopting two test states of downwind and upwind, and then the test results of the downwind and the upwind are averaged to obtain final wind noise data. Therefore, how to provide a method for calculating the wind noise of the whole vehicle so as to accurately reflect the real wind noise of the whole vehicle is a problem to be solved currently. Disclosure of Invention The application provides a method, a system, equipment and a computer readable storage medium for calculating wind noise of a whole vehicle, which can accurately reflect the real wind noise of the whole vehicle. In a first aspect, an embodiment of the present application provides a method for calculating wind noise of a whole vehicle, where the method includes: acquiring first wind noise data corresponding to the real-time vehicle speed in the downwind state and second wind noise data corresponding to the real-time vehicle speed in the upwind state; Dividing the first wind noise data based on a preset octave to obtain third wind noise data corresponding to a plurality of target octave segments, and dividing the second wind noise data based on a preset octave to obtain fourth wind noise data corresponding to a plurality of target octave segments, wherein the target octave segments are frequency bands with a preset center frequency as a center, and the preset center frequency is determined based on the preset octaves; For each target octave segment, determining a target index and an interference noise value based on third wind noise data and fourth wind noise data of the target octave segment, a real-time vehicle speed and a real-time wind speed, and determining wind noise data of the target octave segment based on the target index, the interference noise value and the real-time vehicle speed, wherein the target index represents a nonlinear relation between wind noise and vehicle speed; and determining target wind noise data corresponding to the real-time vehicle speed according to the wind noise data of all the target octave segments. With reference to the first aspect, in an implementation manner, the determining, based on the third wind noise data and the fourth wind noise data of the target octave segment, the real-time vehicle speed and the real-time wind speed, the target index and the interference noise value includes: substituting the third wind noise data, the fourth wind noise data, the real-time vehicle speed and the real-time wind speed into the following calculation formula to obtain a target index and an interference noise value, wherein the calculation formula is as follows: In the formula, A target index of an ith target octave segment; an interference noise value of the ith target octave segment; third wind noise data of the ith target octave segment; Fourth wind noise data of the ith target octave segment; The real-time vehicle speed is obtained; Is the real-time wind speed. With reference to the first aspect, in an implementation manner, the determining wind noise data of the target octave based on the target index, the interference noise value and the real-time vehicle speed includes: Substituting the target index, the interference noise value and the real-time vehicle speed into the following calculation formula to obtain wind noise data of the target octave section, wherein the calculation formula is as follows: In the formula, A target index of an ith target octave segment; an interference noise value of the ith target octave segment; The real-time vehicle speed is obtained; And wind noise data corresponding to the ith target octave segment. With reference to the first aspect, in an implementation manner, the determining, according to wind noise data of all target octaves, target wind noise data corresponding to a real-time vehicle speed includes: Substituting the wind noise data of each target octave section into the following calculation formula to obtain target wind noise data corresponding to the real-time vehicle speed, wherein the calculation formula is as follows: In the formula, Wind noise data corresponding to the ith target octave segment; is target wind noise data corresponding to the real-time vehicle speed. In a second aspect, an embodiment