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Method, device and automobile for determining main transmission path of sound of tire cavity

A technology of transmission path and cavity sound, which is used in measurement devices, measurement of ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effect of improving implementation efficiency, avoiding decoupling problems, and efficient investigation

Active Publication Date: 2019-02-05
深蓝汽车科技有限公司
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Problems solved by technology

[0007] The object of the present invention is to provide a method, device and automobile for determining the main transmission path of tire cavity sound, so as to solve the problem in the prior art that the main transmission path of the sound pressure response point in the compartment cannot be determined quickly

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  • Method, device and automobile for determining main transmission path of sound of tire cavity
  • Method, device and automobile for determining main transmission path of sound of tire cavity
  • Method, device and automobile for determining main transmission path of sound of tire cavity

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Embodiment Construction

[0064] refer to figure 1 , the present invention provides a method for determining the main transmission path of tire cavity sound, comprising:

[0065] Step 1, determine the target wheel that contributes the most to the tire cavity sound.

[0066] Specifically, refer to figure 2 , step 1 consists of:

[0067] Step 11, determine a wheel on the vehicle as the wheel to be tested, fill the wheel to be tested with the first medium and fill the remaining wheels with a medium whose cavity modal frequency is lower than the cavity modal frequency of the first medium. a second medium, and a microphone for collecting sound pressure is arranged at at least one sound pressure response point in the vehicle compartment;

[0068] Wherein, the first medium is a rare gas, and the second medium is air; at least one of the sound pressure response points includes: the front driver's right ear FLR and / or the rear co-pilot's right ear RRR. The first medium is optimally helium.

[0069] The se...

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Abstract

The object of the invention is to provide a method, a device and an automobile for determining a main transmission path of sound of a tire cavity, so as to solve the problem that the main transmissionpath of sound pressure response points in a vehicle compartment cannot be quickly determined in the prior art. The method for determining the main transmission path of the sound of the tire cavity comprises the following steps of: determining a target wheel which contributes the most to the sound of the tire cavity; performing a transmission path analysis on a quarter suspension system corresponding to the target wheel; determining the main transmission path of the corresponding sound of the tire cavity of each sound pressure response point located in the vehicle compartment under the condition of the predetermined test condition that causes the most pronounced sound of the tire cavity.

Description

technical field [0001] The invention relates to the field of vehicle roughness performance, in particular to a method and device for determining the main transmission path of tire cavity sound and a vehicle. Background technique [0002] The control technology of vehicle road noise is the focus of research in the field of NVH. Compared with traditional internal combustion engine vehicles, the road noise problem of electric vehicles is becoming more and more prominent. Under the general trend of electrification, major automobile manufacturers pay more attention to the investment in research and development of road noise control technology. [0003] The road noise problem has many manifestations, among which the tire cavity sound problem caused by the tire cavity mode is the focus and difficulty in road noise rectification. The frequency range of passenger car tire cavity sound is from 180Hz to 250Hz, and it often presents a double-peak feature in the frequency spectrum. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 彭博庞剑唐永强范大力余雄鹰
Owner 深蓝汽车科技有限公司
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