CN109186750A - A kind of inside gadget to vehicle every sound absorption harmony qualitative effects prediction technique - Google Patents
A kind of inside gadget to vehicle every sound absorption harmony qualitative effects prediction technique Download PDFInfo
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- CN109186750A CN109186750A CN201810979480.9A CN201810979480A CN109186750A CN 109186750 A CN109186750 A CN 109186750A CN 201810979480 A CN201810979480 A CN 201810979480A CN 109186750 A CN109186750 A CN 109186750A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/10—Noise analysis or noise optimisation
Abstract
The present invention relates to a kind of inside gadget to vehicle every sound absorption harmony qualitative effects prediction technique, comprising the following steps: the first step, adjust vehicle working condition state；Second step, placement sensor；Third step acquires internal car noise under each work condition state；4th step, data consistent check；5th step, noise data processing analysis；6th step, obtained virtual " digital inside gadget "；7th step, the noise level of prediction test vehicle.The present invention can save research and development cost, improve automobile development efficiency in the horizontal every sound absorption of the final complete sample car of automobile development early prediction.
Description
Technical field
The present invention relates to automotive performance tests, and in particular to a kind of inside gadget is to vehicle every the pre- of sound absorption harmony qualitative effects
Survey method.
Background technique
The noise of current automobile has become customer to one of the important indicator of automobile general impression and evaluation, how to reduce vapour
Vehicle noise and promotion sound quality are an important topics of current automotive technology development, have obtained the wide of each vehicle manufacturing enterprise
General attention.
The noise testing for needing repeatedly to carry out tooling sample car vehicle grade during automotive development, evaluates vehicle noise water
It is flat, relevant issues are analyzed, and formulate optimal planning.
Since inside gadget moulding determines later, the tooling sample car for developing preliminary stage does not have trim plastic parts, ceiling liner
Equal interior trims tool part, and these inside gadgets lack the analysis that would necessarily affect vehicle noise testing result and relevant issues
And optimization.
In general, in order to solve this problem, each main engine plants all can additionally be opened for each new model to make one
Soft mode inside gadget is criticized, to meet the needs of exploitation preliminary stage test.Although it is informal early period that this method solve exploitations
The test problem of interior trim tool part, but the additional die sinking of inside gadget increases research and development cost to a certain extent, and affects
Development efficiency, it is therefore desirable to separately seek approach.
CN105115593A discloses a kind of " " electronic hybrid vehicle noise testing method ", comprising the following steps: a) choose
The vehicle of series-parallel hybrid electric system is as test object；B) it measures vibration acceleration: being surveyed using 24 channel magnetic head loggers
Measure engine, speed changer and the vibration acceleration just, at copilot；C) it measures noise signal: using 24 channel magnetic head loggers
Measurement the near front wheel, skipper's roof are outer, exhaust outlet is outer, the noise signal at speed changer and at engine；D) using this general sharp event
Hinder the revolving speed of diagnostic equipment measurement generator and motor；E) it is just driven using the bright moral portable voice analyzer record car in 4 channels
Sail the noise signal of ears corresponding position and copilot auris dextra corresponding position and skipper's back seat auris dextra corresponding position；
F) according to step b)~e) measurement data carry out internal car noise spectrum analysis.The present invention can accurately determine noise excitation source, contracting
Short cycle of measurement.
" a kind of based on the fuzzy interior vibration noise prediction technique by dimension analysis theories " disclosed in CN107045573A, leads to
The interior vibration noise prediction finite element model of foundation is crossed, and determines the Target space position and target frequency of interior vibration noise prediction
Rate range, the uncertain variables predicted by decision car vibration noise are established fuzzy with fuzzy number quantification uncertain variables
Exponential model calculates extreme point and the most value point on most value point and non-zero Truncated set level on zero Truncated set level, finally obtains interior
Vibration noise obscures the frequency response distribution of sound pressure level.The advantage is that: with fuzzy number quantification uncertain parameter, by dimension analysis reason
Based on, computational accuracy and computational efficiency can be effectively improved；Analysis, optimization and control suitable for Vehicle Interior Noise.
Unquestionably, the above-mentioned prior art is all a kind of good try of technical field.
Summary of the invention
It, can the object of the present invention is to provide a kind of inside gadget to vehicle every the prediction technique of sound absorption harmony qualitative effects
In the horizontal every sound absorption of the final complete sample car of automobile development early prediction, research and development cost is saved, automobile development efficiency is improved.
The present invention utilizes the accumulation of a large amount of empirical datas, accurately identifies vehicle each interior trim under different driving cycles
Component can be referred to as virtual " digital inside gadget " to the contribution value or range of vehicle noise.Afterwards before new car model development
Phase, in the case where no interior trim tool part, contribution margin that rule of thumb data obtain, so that it may analysis and solve vehicle noise
Simultaneously look-ahead goes out final sample car noise level to problem.
It is of the present invention it is a kind of prediction inside gadget to vehicle every sound absorption harmony qualitative effects method, characterized in that packet
Include following steps:
The first step adjusts vehicle-state；
Principle is tested according to unitary variant, each inner-decoration component is sequentially overlapped on the basis of vehicle is without inside gadget state
Change the state of vehicle；Wherein, the inner-decoration component include instrument platen, trim panel, ceiling liner, carpet, front panel every
Sound pad, acoustical cotton；
Cloth microphone (sensor): second step on the basis of vehicle testing state confirmation is good, microphone arrangement is existed
At the ears of interior driver and each passenger；
Third step acquires internal car noise under each work condition state；Including steady state condition and transient condition.For different works
Condition adopts equipment using the number of Lang De company and tests internal car noise respectively；
4th step, data consistent check；After the data for acquiring each operating condition, the validity of data is checked.Logarithm
According to the good operating condition of consistency, continue test acquisition, and to the operating condition of data consistency difference, needs to check vehicle-state and again
Test；
5th step, noise data processing analysis；
The processing analysis of steady state condition noise data, including idling and at the uniform velocity；
Noise sound size, lamprophonia under each steady state condition of analysis software for adopting coordinative composition of equipments using bright moral number
It spends (AI) size and frequency forms situation；
The processing analysis of transient condition noise data, including accelerate；
Interior noise sound curve under accelerating mode is analyzed, speech articulation (AI) size and frequency form situation；
6th step, obtained virtual " digital inside gadget "；Test under comparative analysis different vehicle state, identical operating condition
Data can obtain Noise contribution of each inside gadget under the operating condition；It is obtained by noise data processing analysis virtual
" digital inside gadget "；
7th step, the noise level of prediction test vehicle；
Using the accumulation of a large amount of empirical datas, vehicle each interior trim portion under different driving cycles can be accurately identified
Contribution value or range of the part to vehicle noise；It is not needing additionally to make inside gadget mold new car model development early period afterwards
In the case of, vehicle noise problem can be analyzed and solved according to obtained contribution margin and estimate out final sample car noise in advance
It is horizontal.
The beneficial effect of this hair is:
(1) this method can not only accurately obtain single inside gadget under different operating conditions to the contribution margin of internal car noise or
Range can also obtain all interior materials to total contribution value or range of internal car noise；
(2) new car model development early period afterwards, in the case where not needing inside gadget and being additionally opened, according to the noise contribution
Vehicle noise problem can be analyzed and be solved to value or range and look-ahead goes out final sample car noise level.
(3) reasonable utilization of this method can save a large amount of additional die sinking expense, while can also promote development efficiency.
Detailed description of the invention
Fig. 1 be inside gadget to vehicle every sound absorption harmony qualitative effects predictor method flow chart；
Fig. 2 be inside gadget to vehicle every sound absorption harmony qualitative effects predictor method effect diagram；
Fig. 3 is interior microphone arrangement schematic diagram；
Fig. 4 is schematic diagram of certain inside gadget to Noise contribution at the uniform velocity condition automobile；
Fig. 5 is schematic diagram of certain inside gadget at the uniform velocity condition automobile inner language clarity contribution amount；
Fig. 6 is schematic diagram of certain inside gadget to accelerating mode internal car noise contribution amount (overall)；
Fig. 7 is schematic diagram of certain inside gadget to accelerating mode car speech articulation contribution amount；
Fig. 8 is schematic diagram of certain inside gadget to accelerating mode internal car noise contribution amount (colormap)；
Fig. 9 is schematic diagram of no inside gadget to accelerating mode internal car noise contribution amount (colormap).
Specific embodiment
Specific embodiments of the present invention will be described in further detail below, to help those skilled in the art couple
Design and technical solution of the invention has more complete, accurate and deep understanding.
The present invention is described in detail below with reference to attached drawing.
Shown in referring to Fig.1 it is a kind of prediction inside gadget to vehicle every sound absorption harmony qualitative effects method flow chart,
Vehicle and is passed through every the prediction technique of sound absorption harmony qualitative effects the object of the present invention is to provide a kind of inside gadget
This method estimates the horizontal every sound absorption of final complete sample car.As shown in Fig. 2, new car model development early period afterwards, in no interior trim
In the case where tool part, vehicle noise problem can be analyzed and solved according to obtained virtual " digital inside gadget " and shift to an earlier date
It estimates out final sample car noise level and improves development efficiency to save research and development cost.
It is of the present invention it is a kind of prediction inside gadget to vehicle every sound absorption harmony qualitative effects method, characterized in that packet
Include following steps:
The first step adjusts vehicle working condition state；
Principle is tested according to unitary variant, each inner-decoration component is sequentially overlapped on the basis of vehicle is without inside gadget state
Change the state of test vehicle, and make a mark to each state, the internal car noise to be tested under each work condition state respectively is made
Prepare；Wherein, the inner-decoration component includes instrument platen, trim panel, ceiling liner, carpet, front panel sound insulating pad, sound-absorbing
Cotton.
Second step, cloth microphone (sensor)；On the basis of vehicle testing state confirmation is good, (referring to Fig. 3) will be passed
Sensor (i.e. microphone) is respectively arranged at the ears of driver in the car and passenger；Make to arrange that sensor in the car is leaned on seat
The distance of back is 10cm ± 1cm, and is in same level height；
Third step acquires internal car noise under each work condition state；
Steady state condition state, respectively acquire idling air-conditioning open, idling air-conditioning close, coarse cement road 50KPH at the uniform velocity, coarse water
Road 65KPH at the uniform velocity, coarse cement road 80KPH at the uniform velocity, smooth asphalt road 80KPH at the uniform velocity, smooth asphalt road 100KPH at the uniform velocity and
Internal car noise data under smooth asphalt road 120KPH at the uniform velocity operating condition, internal car noise data acquisition under each operating condition three times with
On；
Transient condition state, the car acquired under second gear accelerates entirely, second gear half accelerates and the three full accelerating modes of gear respectively are made an uproar
Sound data, the internal car noise data acquisition under each operating condition is more than three times；
4th step, data consistent check；Have to the internal car noise data of each work condition state of third step acquisition
The inspection of effect property continues test acquisition to the good work condition state of data consistency；And to the work condition state of data consistency difference,
It needs to check vehicle-state and retests；
5th step, noise data processing analysis；
The processing analysis of steady state condition noise data, including idling and at the uniform velocity；
Noise sound size, lamprophonia under each steady state condition of analysis software for adopting coordinative composition of equipments using bright moral number
It spends (AI) size and frequency forms situation；Fig. 4 is schematic diagram of the inside gadget to Noise contribution interior under at the uniform velocity operating condition；Fig. 5 is
The schematic diagram of speech articulation contribution amount；
The processing analysis of transient condition noise data, including accelerate；
Analyze interior noise sound curve (overall curve), speech articulation (AI) size and frequency under accelerating mode
Rate forms situation (colormap figure)；
Wherein Fig. 6, Fig. 7 and Fig. 8, Fig. 9 be respectively inside gadget to internal car noise under accelerating mode (overall,
Colormap figure) and speech articulation contribution amount schematic diagram；Wherein the colormap figure is a three-dimensional coordinate figure, horizontal
Coordinate representation frequency, ordinate indicate revolution, the size of the depth characterization sound pressure level of color.
6th step, obtained virtual " digital inside gadget "；
Test data under comparative analysis different vehicle state, identical operating condition can obtain each inside gadget in the operating condition
Under Noise contribution；Virtual " the digital inside gadget " that analysis obtains is handled by noise data；
7th step, the noise level of prediction test vehicle；
Using the accumulation of a large amount of empirical datas, vehicle each interior trim portion under different driving cycles can be accurately identified
Contribution value or range of the part to vehicle noise.
Comparative analysis can obtain all inner-decoration components to internal car noise without inside gadget state and the complete state of inside gadget
Overall contribution amount.New car model development early period afterwards, in the case where not needing additionally to make inside gadget mold, according to obtaining
Contribution margin can analyze and solve vehicle noise problem and estimate out final sample car noise level in advance, thus save
Cost is researched and developed, development efficiency is improved.
Claims (1)
1. it is a kind of prediction inside gadget to vehicle every sound absorption harmony qualitative effects method, characterized in that the following steps are included:
The first step adjusts vehicle working condition state；
Principle is tested according to unitary variant, is sequentially overlapped each inner-decoration component on the basis of vehicle is without inside gadget state to change
The state of vehicle is tested, and is made a mark to each state, the internal car noise to be tested under each work condition state respectively is prepared；
Second step, placement sensor；On the basis of vehicle testing state confirmation is good, sensor is respectively arranged and is driven in the car
At the ears of member and passenger；Make to arrange sensor and backrest distance 10cm ± 1cm in the car, and is in same water
Flat height；
Third step acquires internal car noise under each work condition state；
Steady state condition state, respectively acquire idling air-conditioning open, idling air-conditioning close, coarse cement road 50KPH at the uniform velocity, coarse cement road
65KPH at the uniform velocity, coarse cement road 80KPH at the uniform velocity, smooth asphalt road 80KPH at the uniform velocity, smooth asphalt road 100KPH at the uniform velocity with it is smooth
Internal car noise data under asphalt road 120KPH at the uniform velocity operating condition, the internal car noise data acquisition under each operating condition is more than three times；
Transient condition state acquires the internal car noise number under second gear accelerates entirely, second gear half accelerates and the three full accelerating modes of gear respectively
According to the internal car noise data acquisition under each operating condition is more than three times；
4th step, data consistent check；Validity is carried out to the internal car noise data of each work condition state of third step acquisition
It checks, to the good work condition state of data consistency, continues test acquisition；And to the work condition state of data consistency difference, it needs
It checks vehicle-state and retests；
5th step, noise data processing analysis；
The processing analysis of steady state condition noise data, including idling and at the uniform velocity；
Noise sound size, speech articulation under each steady state condition of analysis software for adopting coordinative composition of equipments using bright moral number
(AI) size and frequency form situation；
The processing analysis of transient condition noise data, including accelerate；
Interior noise sound curve under accelerating mode is analyzed, speech articulation (AI) size and frequency form situation；
6th step, obtained virtual " digital inside gadget "；Test number under comparative analysis different vehicle state, identical operating condition
According to Noise contribution of each inside gadget under the operating condition can be obtained；By noise data handle that analysis obtains it is virtual
" digital inside gadget "；
7th step, the noise level of prediction test vehicle；
Using the accumulation of a large amount of empirical datas, vehicle each inner-decoration component pair under different driving cycles can be accurately identified
The contribution value or range of vehicle noise；The case where additionally making inside gadget mold is not being needed new car model development early period afterwards
Under, vehicle noise problem can be analyzed and solved according to obtained contribution margin and estimate out final sample car noise water in advance
It is flat.
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Cited By (7)
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| CN109946091A (en) * | 2019-03-25 | 2019-06-28 | 重庆长安汽车股份有限公司 | A method of evading vehicle body low-frequency noise problem |
| CN110174166A (en) * | 2019-05-05 | 2019-08-27 | 奇瑞汽车股份有限公司 | A kind of pure electric vehicle acoustics packet design method |
| CN110595596A (en) * | 2019-09-24 | 2019-12-20 | 重庆长安汽车股份有限公司 | Method for testing contribution amount of noise of air inlet and outlet to noise in vehicle |
| CN111750977A (en) * | 2020-06-22 | 2020-10-09 | 重庆长安汽车股份有限公司 | Noise testing device and method for automobile air pipe and air port |
| CN111753368A (en) * | 2020-05-18 | 2020-10-09 | 重庆长安汽车股份有限公司 | Method for predicting sound absorption performance in vehicle |
| CN112069448A (en) * | 2020-08-31 | 2020-12-11 | 重庆长安汽车股份有限公司 | Method for decomposing contribution of airborne acoustic noise in vehicle |
| CN112254805A (en) * | 2020-10-22 | 2021-01-22 | 奇瑞新能源汽车股份有限公司 | In-vehicle sound quality testing device and method |
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| CN109946091A (en) * | 2019-03-25 | 2019-06-28 | 重庆长安汽车股份有限公司 | A method of evading vehicle body low-frequency noise problem |
| CN110174166A (en) * | 2019-05-05 | 2019-08-27 | 奇瑞汽车股份有限公司 | A kind of pure electric vehicle acoustics packet design method |
| CN110174166B (en) * | 2019-05-05 | 2021-12-28 | 奇瑞汽车股份有限公司 | Pure electric vehicle acoustic package design method |
| CN110595596A (en) * | 2019-09-24 | 2019-12-20 | 重庆长安汽车股份有限公司 | Method for testing contribution amount of noise of air inlet and outlet to noise in vehicle |
| CN111753368A (en) * | 2020-05-18 | 2020-10-09 | 重庆长安汽车股份有限公司 | Method for predicting sound absorption performance in vehicle |
| CN111753368B (en) * | 2020-05-18 | 2022-07-08 | 重庆长安汽车股份有限公司 | Method for predicting sound absorption performance in vehicle |
| CN111750977A (en) * | 2020-06-22 | 2020-10-09 | 重庆长安汽车股份有限公司 | Noise testing device and method for automobile air pipe and air port |
| CN112069448A (en) * | 2020-08-31 | 2020-12-11 | 重庆长安汽车股份有限公司 | Method for decomposing contribution of airborne acoustic noise in vehicle |
| CN112069448B (en) * | 2020-08-31 | 2022-05-17 | 重庆长安汽车股份有限公司 | Method for decomposing contribution of airborne acoustic noise in vehicle |
| CN112254805A (en) * | 2020-10-22 | 2021-01-22 | 奇瑞新能源汽车股份有限公司 | In-vehicle sound quality testing device and method |
| CN112254805B (en) * | 2020-10-22 | 2022-08-30 | 奇瑞新能源汽车股份有限公司 | Method for testing sound quality in vehicle |
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