CN106441551A - Motor vehicle slope road noise emission correction model - Google Patents
Motor vehicle slope road noise emission correction model Download PDFInfo
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- CN106441551A CN106441551A CN201610822195.7A CN201610822195A CN106441551A CN 106441551 A CN106441551 A CN 106441551A CN 201610822195 A CN201610822195 A CN 201610822195A CN 106441551 A CN106441551 A CN 106441551A
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- 238000012937 correction Methods 0.000 title claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract 1
- 238000002715 modification method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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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Abstract
The invention provides a motor vehicle slope road noise emission correction model considering the vehicle driving state. The construction process of the model is that a driving state of a vehicle on a slope road is converted into a driving state on a horizontal road, so that an emission model only suitable for the horizontal road is enabled to be applied to different longitudinal slope scenes. A road longitudinal slope value is measured, the additional acceleration and the additional power generated due to existence of the road longitudinal slope of the vehicle are calculated, and two parameters of the additional acceleration and the additional power are added to an original motor vehicle emission to obtain a noise emission model of the motor vehicle on the slope road. In concrete application, data acquisition experiments are firstly carried out, the speed, the acceleration and the noise value of the vehicle are collected, then the noise emission model of the motor vehicle on the slope road is used for determining coefficients of parameters, and after the coefficients are determined, the model can be applied to different road longitudinal slope scenes.
Description
Technical field
The present invention relates to predicting field in motor vehicles noise emission, more specifically, it is related to a kind of consideration vehicle running state
Motor vehicle slope section noise emission correction model.
Background technology
Motor vehicles noise emission model can predicted link neighboring area effectively noise figure, in the traffic noise in city
The aspects such as control, acoustic environment Contamination Assessment, drafting Noise map suffer from vital effect.Vehicle is in different traveling shapes
Under state, the noise of discharge is also different；Different road conditions also can have a certain impact to the noise emission of vehicle.Slope
Section is all widely present in urban road or highway, and the gateway of viaduct is also all slope section, and vehicle is in slope road
Noise emission in section has very big difference, accordingly, it would be desirable to set up vehicle on slope with the noise emission on horizontal section
Noise emission model when travelling on section, thus predicted link traffic noise pollution situation exactly.
Current domestic motor vehicles noise emission model is mainly based upon U.S.'s FHWA model and is modified and improves formation,
Also scholar is had to carry out experiment measurement, matching obtains the noise emission model of motor vehicles.But these models are to consider motor vehicles mostly
Noise emission situation when travelling on level road, the concern for road longitudinal grade is less.The scholars such as Chen Ziming are in last century
Carry out the nineties testing gathered data, give a kind of gradient modification method, and《Environmental impact assessment directive/guide acoustic environment
（HJ4.2-2009）》Also take this modification method.
But because China's road conditions are very significantly improved in recent years, and the performance of vehicle is also improved,
This modification method is not appropriate for being applied under present case, simultaneously as the method is obtained by measurement result contrast,
Lack related theoretical foundation it is therefore desirable to have a kind of new more accurately modification method, thus improving the accurate of forecast model
Degree.
Content of the invention
It is an object of the invention to the forecasting problem of vehicle noise emission when travelling is solved on slope section it is considered to vehicle
Transport condition, obtain a kind of motor vehicle slope section noise emission correction model.
In order to realize above-mentioned goal of the invention, the technical solution used in the present invention is as follows：
A kind of motor vehicle slope section noise emission correction model, concrete model building process is：
A. collection vehicle data, the road that vehicle data includes transport condition data, the noise figure of discharge and slope section is indulged
Slope；
B. based on the vehicle data being gathered, force analysis is carried out to the vehicle in slope section, obtains due to suffered gravity
The impact of component and the coriolis acceleration that produces；And calculate vehicle and produced due to the impact of suffered partical gravity in slope section
Raw secondary power consumption；
C. change the transport condition of vehicle, vehicle from being converted into the row on level road in the transport condition slope section
Sail state；Vehicle at the uniform velocity goes up a slope in slope section, then be equivalent to the size with coriolis acceleration on level road for the vehicle even
Give it the gun, and have extra secondary power consumption, in the same manner, vehicle at the uniform velocity descending in slope section, then be equivalent to vehicle
With the even Reduced Speed Now of the size of coriolis acceleration on level road, and there is extra secondary power consumption；
D. add to revise this by the acceleration of step b gained and secondary power consumption in motor vehicles bicycle noise emission model
The parameter of motor vehicles bicycle noise emission model（Determine the coefficient of this model parameters with the method for regression analyses）, to obtain
Noise emission model in slope section for the motor vehicles.
Specifically, for effective collection vehicle data, two measuring points, placement sound respectively are set first in slope section
Level meter, vehicle measures its speed and noise figure size when two monitoring points respectively.
The distance between two monitoring points be set to 20 meters it is assumed that vehicle to travel brief acceleration between this 2 points constant,
Calculate the acceleration of vehicle by 2 points of speed recording and distance between two points.
The record data time-division, large, medium and small three kinds of vehicles were recorded, and ought only one car through out-of-date ability record number
According to, it is to avoid the impact of other vehicles.
Preferably, in described step a, transport condition data includes speed and the acceleration of vehicle.
Preferably, in described step a, the noise figure of discharge refers to the moment through sound meter when vehicle, and sound meter measures
The A weighted equivalent sound level obtaining.
Preferably, in described step a, road longitudinal grade refers to the road longitudinal grade obtaining in experiment section by total station survey
Value.Total powerstation is placed on bottom of slope, the height of measurement total powerstation to ground, mobile position in slope section for the prism, measures rib
Mirror to the height on ground, take multiple measurements between total powerstation and prism flat away from and the discrepancy in elevation, calculate road longitudinal grade, be averaged
Value, to reduce error.
Preferably, in affiliated step b, characterized due to road longitudinal grade with the speed of vehicle and the product of coriolis acceleration
And the secondary power consumption existing and bringing.
Preferably, in described step c, compare vehicle slope section and on level road travel phase answer acceleration and
The situation of change of power, is fused to the impact to vehicle for the road longitudinal grade in the transport condition change of vehicle, thus equivalency transform
The transport condition of vehicle.
Compared with prior art, the present invention has advantages below：
The present invention proposes a kind of motor vehicle slope section noise emission correction model considering vehicle running state.This model energy
Enough states becoming traveling on horizontal section by the State Transferring travelling vehicle in slope section, make originally to be only applicable to water
Motor vehicles noise emission model in flat road surface is applicable in the slope section of different gradient.
The conversion to vehicle running state for the method, is that the force analysis in slope section is carried out based on vehicle, tool
There are certain theoretical foundation and physical background.And after the method is fitted by the data that experiment gathers, determine every ginseng
The coefficient of number, can be applicable in the road conditions other application scene similar with vehicle performance, adaptability is stronger.
Brief description
Fig. 1 is the disassembled schematic of vehicle suffered gravity in slope section in the present invention.
Fig. 2 is the speed of vehicle and displacement noise value instrumentation plan in the present invention.
Fig. 3 is road longitudinal grade survey calculation schematic diagram in the present invention.
Fig. 4 is the flow chart of the present invention.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As shown in figure 4, a kind of application of the motor vehicle slope section noise emission correction model considering vehicle running state,
Mainly include the following steps that：
Step 1：As shown in figure 1, carrying out force analysis to the vehicle in slope section, gravity suffered by vehicle has and road longitudinal grade
Exist and produce a component, so that vehicle produces an additional acceleration, the additional acceleration of secondary power
Degree to be represented with the product of speed,, wherein g is acceleration of gravity,Inclination angle for slope section.
Step 2：The transport condition of conversion vehicle.Vehicle travels in slope section and travels with level road, maximum
Difference be coriolis acceleration and the secondary power that slope section brings, therefore vehicle travels in slope section, is equivalent to
After vehicle is superimposed coriolis acceleration and secondary power on the basis of original speed, acceleration, level road travels.
Step 3：Revise the expression-form of motor vehicles noise emission model, repaiied with obtaining the noise emission of motor vehicle slope section
Positive model.Because existing motor vehicles noise emission model is based on level road, therefore add additional on this basis
Acceleration and two parameters of secondary power are so as to can be modified to the noise of slope section.Its motor vehicle slope section noise
The expression formula of discharge correction model is as follows：
In above formula, the noise figure that L discharges for vehicle, dB；C0、C1、C2、C3For constant；V is car speed, km/h；A is vehicle
Acceleration, m/s2；G is acceleration of gravity, takes 9.8 m/s2；For the inclination angle of road longitudinal grade, rad.
When vehicle driving up,Item takes on the occasion of taking negative value when vehicle descending.
Step 4：As shown in Fig. 2 carrying out testing speed, acceleration and the noise figure of collection vehicle.In slope section
Choose two points（1. and 2.）, distance between two points are 20 meters, are 7.5 meters to first lane center linear distance, respectively two
Sound meter is placed at point place, and microphone sensing road side, to 1.2 meters of ground level.When vehicle entered respectively at 2 points, record car
Vehicle, place track, the noise figure of discharge, and 3. locating the speed of measuring vehicle.In conjunction with two velocity amplitudes and 2 points
Between distance it is assumed that vehicle is that even speed change travels in this point-to-point transmission, you can be calculated the acceleration of vehicle.
Step 5：Measurement road longitudinal gradient value.As shown in figure 3, the discrepancy in elevation of slope section is H, in bottom of slope placing total station, survey
Amount total powerstation to ground height h1, portion's placement prism on the slope, the distance of measuring prism to ground is h2, by total powerstation
Record prism flat away from S and discrepancy in elevation Δ H, then road longitudinal grade is calculated by below equation.Repeatedly measure conduct of averaging
The road longitudinal grade value in this section.
Step 6：The data that experiment is recorded substitutes in the expression formula of step 3 gained, is determined each with the method for regression analyses
The coefficient of item parameter, you can model is applied under the scene of different road longitudinal grades.
Claims (6)
1. a kind of motor vehicle slope section noise emission correction model is it is characterised in that concrete model building process is：
A. collection vehicle data, the road that vehicle data includes transport condition data, the noise figure of discharge and slope section is indulged
Slope；
B. based on the vehicle data being gathered, force analysis is carried out to the vehicle in slope section, obtains due to suffered gravity
The impact of component and the coriolis acceleration that produces；And calculate vehicle and produced due to the impact of suffered partical gravity in slope section
Raw secondary power consumption；
C. change the transport condition of vehicle, vehicle from being converted into the row on level road in the transport condition slope section
Sail state；
D. add to revise this by the acceleration of step b gained and secondary power consumption in motor vehicles bicycle noise emission model
The parameter of motor vehicles bicycle noise emission model, to obtain noise emission model in slope section for the motor vehicles.
2. noise emission correction model in motor vehicle slope section according to claim 1 it is characterised in that：Described step a
In, transport condition data includes speed and the acceleration of vehicle.
3. noise emission correction model in motor vehicle slope section according to claim 1 it is characterised in that：Described step a
In, the noise figure of discharge refers to the moment through sound meter when vehicle, the A weighted equivalent sound level that sound meter measurement obtains.
4. noise emission correction model in motor vehicle slope section according to claim 1 it is characterised in that：Described step a
In, road longitudinal grade refers to the road longitudinal grade value obtaining in experiment section by total station survey.
5. noise emission correction model in motor vehicle slope section according to claim 1 it is characterised in that：Affiliated step b
In, characterized with the speed of vehicle and the product of coriolis acceleration due to road longitudinal grade and exist and the secondary power that brings disappears
Consumption.
6. noise emission correction model in motor vehicle slope section according to claim 1 it is characterised in that：Described step c
In, compare vehicle and travel, in slope section with level road, the situation of change that phase answers acceleration and power, road is indulged
The impact to vehicle for the slope is fused in the transport condition change of vehicle, thus the transport condition of equivalency transform vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822195.7A CN106441551A (en) | 2016-09-14 | 2016-09-14 | Motor vehicle slope road noise emission correction model |
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| CN201610822195.7A CN106441551A (en) | 2016-09-14 | 2016-09-14 | Motor vehicle slope road noise emission correction model |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009274510A (en) * | 2008-05-13 | 2009-11-26 | Toyota Motor Corp | Road gradient correction device |
| CN102542121A (en) * | 2012-01-20 | 2012-07-04 | 中山大学 | Motor vehicle noise discharging forecasting method under different traveling states |
| CN103471709A (en) * | 2013-09-17 | 2013-12-25 | 吉林大学 | Method for predicting noise quality of noise inside passenger vehicle |
| JP2015211527A (en) * | 2014-04-25 | 2015-11-24 | 株式会社豊田自動織機 | Industrial vehicle |
-
2016
- 2016-09-14 CN CN201610822195.7A patent/CN106441551A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009274510A (en) * | 2008-05-13 | 2009-11-26 | Toyota Motor Corp | Road gradient correction device |
| CN102542121A (en) * | 2012-01-20 | 2012-07-04 | 中山大学 | Motor vehicle noise discharging forecasting method under different traveling states |
| CN103471709A (en) * | 2013-09-17 | 2013-12-25 | 吉林大学 | Method for predicting noise quality of noise inside passenger vehicle |
| JP2015211527A (en) * | 2014-04-25 | 2015-11-24 | 株式会社豊田自動織機 | Industrial vehicle |
Non-Patent Citations (1)
| Title |
|---|
| KEPHALOPOULOS S: "《Common noise Assessment Methods in Europe (CNOSSOS-EU)》", 《LUXEMBOURG : PUBLICATIONS OFFICE OF THE EUROPEAN UNION》 * |
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Application publication date: 20170222 |
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