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Method for positioning, evaluating and analyzing abnormal sound of whole vehicle

An analysis method and abnormal sound technology, which are used in vehicle testing, machine/structural component testing, vehicle suspension/shock-absorbing mechanism testing, etc.

Inactive Publication Date: 2020-10-30
CHINA AUTOMOTIVE ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the process of automobile abnormal sound design and development, there is no systematic evaluation method to evaluate the performance of automobile abnormal sound and improve the level of abnormal sound performance of automobiles.

Method used

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  • Method for positioning, evaluating and analyzing abnormal sound of whole vehicle
  • Method for positioning, evaluating and analyzing abnormal sound of whole vehicle
  • Method for positioning, evaluating and analyzing abnormal sound of whole vehicle

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Experimental program
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Embodiment Construction

[0126] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0127] Such as figure 1 and 2 As shown, the present invention proposes a method for positioning, evaluating and analyzing the abnormal sound of the whole vehicle,

[0128] Step 1. Vehicle preparation

[0129] Determine the evaluation vehicle, check the evaluation vehicle, including: whether the appearance of the vehicle, common functions, parts status, starting system, braking system, steering system, lighting system, etc. are normal, check whether the tire pressure meets the manufacturer's requirements, and record;

[0130] Step 2. R...

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PUM

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Abstract

The invention provides a method for positioning, evaluating and analyzing abnormal sound of a whole vehicle, which comprises an evaluation step and a scoring processing part. The evaluation step comprises the substeps of preparing an evaluation vehicle, preparing an abnormal sound evaluation road when the vehicle enters a test field, collecting abnormal sound of a vehicle road, and recording eachabnormal sound problem of the vehicle. The scoring processing part comprises steps of scoring each abnormal sound problem of the vehicle on different abnormal sound roads, calculating the total scoreof the single abnormal sound problem of the vehicle, calculating the sum of scores of all abnormal sound problems of the vehicle, and recording the score of a single abnormal sound problem of the vehicle and the total score of all abnormal sound problems. According to the vehicle abnormal sound evaluation method provided by the invention, the overall abnormal sound performance level of the vehiclecan be seen, and the distribution of the vehicle abnormal sound can be displayed according to the abnormal sound problem of the vehicle, specifically which part on the vehicle is reflected.

Description

technical field [0001] The invention relates to the field of NVH testing of automobiles, in particular to a method for positioning, evaluating and analyzing the abnormal sound of the whole automobile. Background technique [0002] NVH is the English abbreviation of Noise, Vibration, Harshness, which is an indicator to measure the comfort performance of a car. With the rapid development of automobile technology, users have higher and higher requirements for the comfort of automobiles. Internationally, car abnormal noise accounts for the largest proportion of car quality complaints, and more than 10% of car maintenance costs come from abnormal sound repairs; in my country, car abnormal sound complaints account for more than 50%, and car abnormal sound has become an important factor affecting the reputation and quality of automobile products. major factor in sales. The root cause of automobile abnormal noise is mainly caused by defects in the development and design of automobi...

Claims

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Application Information

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IPC IPC(8): G01M17/007G01M17/04G06F30/20
CPCG01M17/007G01M17/04G06F30/20
Inventor 谭成友李沛然佘扬佳龚小平
Owner CHINA AUTOMOTIVE ENG RES INST
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