CN109900353A - Tire noise experimental rig and method - Google Patents
Tire noise experimental rig and method Download PDFInfo
- Publication number
- CN109900353A CN109900353A CN201811405536.6A CN201811405536A CN109900353A CN 109900353 A CN109900353 A CN 109900353A CN 201811405536 A CN201811405536 A CN 201811405536A CN 109900353 A CN109900353 A CN 109900353A
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- tire
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/025—Tyres using infrasonic, sonic or ultrasonic vibrations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Tires In General (AREA)
Abstract
Real vehicle is more precisely reproduced using tire monomer to accelerate and slow down and evaluated.Tire (T) is installed on tire rotary shaft (14) in sound equipment measurement space (16) that can measure noise, tire (T) is pressed on into the outer peripheral surface (12A) of roller (12) and is allowed to rotate, it is measured using load cell (28) around the torque of tire rotary shaft or the front and back power of tire, and it is based on the measurement result of load cell (28), apply driving force or brake force to tire rotary shaft (14) using tire power source (18), to which defined value will be adjusted to around the front and back power of the torque of tire rotary shaft or tire, in the state of being applied with the defined torque adjusted in the above described manner or front and back power, the sound issued from tire (T) is detected using sound transducer (20).
Description
Technical field
The present invention relates to a kind of noise test device of tire and noise test methods.
Background technique
In recent years, about carriage, since vehicle performance, usage mode, road traffic environment etc. are changing, because
This previous traveling noise test method is different from the high riving condition of the frequency of use in the traveling of actual drive,
The mechanical transport noise that may not can improve in actual travel is strengthened in limitation based on previous traveling noise test method.Cause
This, needs to establish the evaluation method appropriate for considering actual travel state of drive etc. again, and establishes energy again
The method of enough traveling noise penalties easily and effectively detected in use process, reducing in use process traveling influences specific gravity
Big tire noise etc..
Developed a kind of evaluation method in the past, can in the Lab-evaluation carried out using tire monomer, to vehicle
Noise when with constant speed drive when the comparable coasting test of generated noise measures.However, measurement accelerate or
When person is slowed down in the test of noise caused by tire, evaluation method is not asserted general method as statutes test.
Therefore, the research of evaluation method when each company respectively carries out the acceleration or deceleration using tire monomer.
For example, being on testing stand by the difference of the rotation speed of tire and the rotation speed of roller in patent document 1
Come reproduce when vehicle travels caused by tire rotation speed and car speed speed difference (slip rate), thus carry out using
The evaluation of comparable tire noise when accelerating with real vehicle of tire monomer.However, actually using tire monomer and control at
It, can not since slip rate is also influenced by the environment that travels, situation when accelerating with real vehicle in the case where identical state
Accurately control real vehicle accelerates.
Existing technical literature
Patent document
Patent document 1: Japanese Patent Publication 2012-145421 bulletin
Summary of the invention
(1) technical problems to be solved
Embodiments of the present invention purpose is, provides one kind and is able to use tire monomer and more precisely reproduces real vehicle and adds
Speed, the tire noise experimental rig for slowing down and being evaluated and method.
(2) technical solution
The tire noise experimental rig of embodiments of the present invention has: roller is crimped with tire, and can be rotated；
Tire rotary shaft, is pivotably supported tire；Sound equipment measures space, is used to that tire to be arranged in inside, and measure noise；Wheel
Tire power source can apply driving force or brake force to the tire rotary shaft；Rotary force measuring unit is measured around tire
The torque of rotary shaft or the front and back power of tire；Control unit, based on the measurement result of the rotary force measuring unit, using described
Tire power source applies driving force or brake force to the tire rotary shaft, thus to torque or tire around tire rotary shaft
Front and back power is adjusted；And sound transducer, detect the sound issued from tire.
The tire noise test method of embodiments of the present invention is the following steps are included: be rotatably mounted in wheel for tire
Tire rotary shaft；Tire is pressed on into roller via the tire rotary shaft and is allowed to rotate；Using rotary force measuring unit to around
The torque of tire rotary shaft or the front and back power of tire measure, while being applied using tire power source to the tire rotary shaft
Driving force or brake force, to be adjusted to the front and back power of torque or tire around tire rotary shaft；And it is measured in sound equipment
In space, in the state of being applied with the torque adjusted in the above described manner or front and back power, detected using sound transducer
The sound issued from tire.
(3) beneficial effect
Acceleration and deceleration in real vehicle be by being opened and closed using accelerator pedal, brake make tire generate torque come into
Row control.Therefore, in the evaluation carried out using tire monomer indoors, when accurately reproducing real vehicle acceleration, slowing down, preferably
Also it controls with driving force, the comparable torque of brake force, Lai Zaixian real vehicle accelerates, slows down.According to the present embodiment, to around
The torque of tire rotary shaft, the front and back power of tire measure, and based on its measurement result to tire rotary shaft apply driving force,
Brake force, thus to be applied to the torque of tire rotary shaft, front and back power controls, therefore can reproduce real vehicle when driving plus
Fast state, deceleration regime.Therefore, by being measured to sound at this time, can accurately measure using tire monomer
Noise when real vehicle accelerates, slows down.
Detailed description of the invention
Fig. 1 is the sketch structure figure of the tire noise experimental rig an of embodiment.
Fig. 2 is the schematic side perspective view of the tire noise experimental rig an of embodiment.
Fig. 3 is the flow chart of the tire noise test method an of embodiment.
Description of symbols
10- tire noise experimental rig；12- roller；14- tire rotary shaft；16- sound equipment measures space；18- tire power
Source；20- sound transducer；28- load cell；30- microphone；32- press unit；34- fixed cell；36- control unit；T-
Tire.
Specific embodiment
The embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in Figure 1, the tire noise experimental rig 10 of an embodiment has: roller 12, outer peripheral surface 12A with
Tire T is crimped and can be rotated；Tire rotary shaft 14 is pivotably supported tire T；Sound equipment measures space 16, is used for
Inside setting tire T, and measure noise；Tire power source 18 can apply driving force or brake force to tire rotary shaft 14；
And sound transducer 20, detect the sound issued from tire T.
Roller 12 is supported in a manner of it can rotate by horizontal roller rotary shaft 22, and tire T, which is pressed against, is equivalent to road
On the outer peripheral surface 12A in face, to become state of contacting to earth.Roller rotary shaft 22 is provided with the rolling such as motor for rotating roller 12
Cylinder power source 24.In this embodiment, it as roller, has used and has pressed tire T in outer peripheral surface 12A and be allowed to the outer surface roller travelled,
Also it can be used and press tire in inner peripheral surface and be allowed to the interior surface roller travelled.
Tire rotary shaft 14 is set as parallel with roller rotary shaft 22 with horizontal posture, and before tire rotary shaft 14
End installation tire T, in the upper end position of roller 12, tire T rotation on roller 12 to travel.
The position that sound equipment measurement space 16 is arranged to be equivalent to the ground 16A on road surface be located at the substantially upper end of roller 12 and
Inside is rotatably arranged tire T.Sound equipment measurement space 16 is configured to semi-anechoic room or sound attenuator, is equivalent to the ground on road surface
Face 16A becomes the reflecting surface of reflection sound.Other face 16B of the inside in sound equipment measurement space 16 are provided with the sound-absorbing for absorbing sound
Component 26 and become sound-absorbing face.In this example, aftermentioned load cell 28 and fixed cell 34 are configured at sound together with tire T
It rings in measurement space 16, tire power source 18 is configured at the outside in sound equipment measurement space 16.However, as long as at least tire T is matched
It is placed in sound equipment measurement space 16, for example, load cell 28 etc. can also be configured at the outside in sound equipment measurement space 16,
Alternatively, it is also possible to which tire power source 18 is configured in sound equipment measurement space 16.
Tire power source 18 is used as power source, is to rotate tire T via tire rotary shaft 14, and to tire rotary shaft
14 apply driving force, brake force, use motor in this example.But it is also possible to apply brake force using brake, such as
Also motor and brake can be used together.
Tire rotary shaft 14 is provided with the load cell 28 as rotary force measuring unit, is used to measure around tire
The torque of rotary shaft 14 or the front and back power of tire T.Load cell 28 is the mounting portion and tire power source 18 for being set to tire T
Between and be able to detect the device for being applied to the power of all directions of tire rotary shaft 14.In addition, torque be tire front and back power with
The product of its radius, therefore can mutually convert.Accordingly it is also possible to using the either side in torque and front and back power as object.
Sound transducer 20 is set in sound equipment measurement space 16, and microphone etc. can be used.In this example, such as Fig. 1 and
Shown in Fig. 2, sound transducer 20 is by the configuration (before and after i.e. on the direction of travel of tire) along the longitudinal direction of the side of tire T
Multiple microphones 30 are constituted, and are configured to using these multiple microphones 30 while being included the sound issued from tire T.
In tire noise experimental rig 10, it is additionally provided with the press unit 32 that tire T is pressed on to roller 12.In this example
In, press unit 32 is to make lifting device of the tire power source 18 to oscilaltion, by going up and down tire power source 18, thus
Can make to be installed on the tire T-phase of tire rotary shaft 14 for roller 12 away from or closer to.That is, by making tire power source 18
Decline, can make tire T be resisted against roller 12 via tire rotary shaft 14.In addition, also can be set makes to roll as press unit
Cylinder 12 to oscilaltion lifting device, by making roller 12 to oscilaltion, so as to which tire T is pressed on roller 12.
In tire noise experimental rig 10, load measuring units are additionally provided with, to the pressing to roller 12 as tire T
Pressure, that is, load measures.In this example, load measuring units are made of above-mentioned load cell 28, that is, load cell
28 pairs of above-mentioned torques or front and back power measure, and also survey to the power for the up and down direction for being applied to tire rotary shaft 14
Amount, to can also measure the load for acting on tire T.In addition, load measuring units can also be separated with load cell 28
And in addition it is arranged.
In tire noise experimental rig 10, it is additionally provided with fixed cell 34, by tire rotary shaft 14 in pressing direction
It is fixed on (being up and down direction in this example).Load cell 28 and wheel movement of the foetus of the fixed cell 34 in the load of measurement tire T
Tire rotary shaft 14 is fixed between power source 18, is come in a manner of allowing it to rotate and will not be displaced along the vertical direction
Fixed tire rotary shaft 14.As fixed cell 34, for example, using the brake that liquid, air pressure etc. is utilized
The mechanism that device clamps the position moved up and down.
In Fig. 1, appended drawing reference 36 indicates the control unit that is controlled the movement of tire noise experimental rig 10, can be with
It is constituted using computers such as personal computer, PLC (programmable controller).Control unit 36 and tire power source 18, sound pass
Sensor 20, roller power source 24, load cell 28, press unit 32 and fixed cell 34 are electrically connected, and it is each to control these
The movement in portion.
Specifically, control unit 36 based on load cell 28 to the measurement result of torque or front and back power, utilize wheel movement of the foetus
Power source 18 applies driving force or brake force to tire rotary shaft 14, thus by around the torque of tire rotary shaft 14 or tire T
Front and back power is adjusted to defined value.Control method at this time is not particularly limited, for example, feedback control.Here, making
For defined value, the value with the comparable torque of real train test or front and back power can be enumerated, that is, can enumerate and use real vehicle
Torque, the comparable value of front and back power in acceleration noise test, deceleration noise test in tire generation.
In addition, in this example, control unit 36 proceeds as follows control: the measurement based on load cell 28 to load
As a result, the load of tire T is adjusted to defined value using press unit 32, and will using fixed cell 34 after load adjustment
Tire rotary shaft 14 is fixed in the up-down direction.Here, can be enumerated and real train test phase as the defined value about load
When load value, that is, can enumerate with using real vehicle acceleration noise test, be applied to tire in deceleration noise test
The comparable value of load.
Then, it is illustrated based on tire noise test method of the Fig. 3 to an embodiment.
Firstly, tire T is rotatably mounted in tire rotary shaft 14 in process S1.In addition, the process can be in sound
It rings in measurement space 16 and implements, do not measured in space 16 in sound equipment alternatively, being in addition also possible to tire rotary shaft 14 at this stage,
But for example before it will carry out aftermentioned process S6, surrounded as shown in Figure 1 using sound attenuator comprising around tire T
Component, so that tire T is set in sound equipment measurement space 16.
Then, in process S2, act press unit 32, so that tire T is pressed on rolling via tire rotary shaft 14
The outer peripheral surface 12A of cylinder 12 then rotates tire T.
At this stage, load when tire T being pressed on roller 12 be not necessarily with the comparable load of real train test, only
Apply load proximate to it as initial load.In addition, the rotation speed of tire T can be set as and use in fact
The comparable constant rotation speed of speed before acceleration and deceleration in the acceleration noise test of vehicle, Reduced Speed Now test.It can use
Tire power source 18 makes the rotation of tire rotary shaft 14 to carry out the rotation of tire T, alternatively, being in addition also possible to utilize roller power
Source 24 makes the rotation of roller rotary shaft 22 rotate roller 12, and rotates the tire T contacted with roller 12 using the rotation.
Then, in process S3, the torque or front and back power that are applied to tire rotary shaft 14 are adjusted.The adjustment is benefit
It is measured with front and back power of the load cell 28 to torque or tire T around tire rotary shaft 14, while utilizing wheel movement of the foetus
Power source 18 applies driving force or brake force to tire rotary shaft 14, thus by around the torque of tire rotary shaft 14 or tire T
Front and back power is adjusted to defined value.
Specifically, being applied using tire power source 18 to tire rotary shaft 14 for the tire T rotated on roller 12
Add driving force or brake force, thus the torque or front and back power additional to tire T effect.For example, accelerate noise test in be to
Tire rotary shaft 14 applies driving force, is to apply brake force to tire rotary shaft 14 in Reduced Speed Now test.At this point, based on negative
Set sensor 28 is to the measurement result of torque or front and back power, to adjust the driving force or brake force that apply to tire rotary shaft 14.
That is, being, for example, to control the torque for being applied to tire rotary shaft 14 or front and back power using feedback control, so as to adjust for tire
Rotary shaft 14 applies and the comparable torque of real train test or front and back power.At this point, the travel speed of tire T can be constant, that is, set
For keep tire T travel speed it is constant in the state of become to tire rotary shaft 14 apply as defined in torque or front and back power
State, alternatively, being in addition also possible to apply driving force or brake force to tire rotary shaft 14, to make the travel speed of tire T
It changes.
Then, in process S4, the load of tire T is adjusted.That is, proceeding as follows adjustment: utilizing load cell
28 measurements act press unit 32 to pressing force, that is, load of roller 12, and based on the measurement result as tire T, to make
The load of tire T become defined value, e.g. with the comparable load of real train test.The adjustment can for example pass through feedback control
Come carry out.
After having adjusted load in this way, in process S5, using fixed cell 34 by tire rotary shaft 14 in upper and lower
It is fixed on upwards.
Then, it in process S6, is measured in space 16 in sound equipment, in the up-down direction fixed tire rotary shaft 14, and
In the state of being applied with the defined torque adjusted in above-mentioned operation S3 or front and back power, examined using sound transducer 20
The sound issued from tire T is surveyed, and measures the load of tire T.
In this example, sound transducer 20 is as described above by arranging multiple microphone 30 and structure in the side of tire T
At, and the sound issued from tire T is included simultaneously using these multiple microphones 30.
In addition, the load of tire T can use load cell 28 to measure, by by tire rotary shaft 14 in upper and lower
It is fixed upwards, so as to detect the up and down direction that tire rotary shaft 14 is applied to when tire T is rolled power variation, that is,
Dynamic load when tire rolls can be measured.In addition, in the load for measuring tire rotary shaft 14 after fixed, (i.e. dynamic is carried
Lotus) can be used it is fixed with measurement before the load measuring units of load (i.e. static load) identical devices be measured,
Also other devices can be used.For example, although the measurement device of the dynamic load after fixed is needed as above-mentioned load cell 28
The tire rotary shaft 14 being set between fixed cell 34 and tire T like that, but the measurement device of the static load before fixing
It is not necessarily set to tire rotary shaft 14, such as also can be set in 12 side of roller.
According to the present embodiment, torque or front and back power are controlled in 14 side of tire rotary shaft, and keeps roller 12 opposite
Linkage rotation is carried out in tire T, so as to more accurately reproduce real vehicle acceleration mode when driving or deceleration regime, and
The sound issued at this time is measured, is accelerated so as to accurately measure using actual noise, that is, real vehicle of tire monomer
When, slow down when noise.
In addition, thus allowing for considering by arranging multiple microphones 30 in the side of tire T and being included simultaneously
The measurement of the relative position of the tire and microphone of velocity variations, can be close to the measurement using real vehicle.
In addition, by the measuring load after fixing tire rotary shaft 14 in the up-down direction, so as to measure wheel
Dynamic load when tire rolls.That is, the dynamic load under real vehicle acceleration mode when driving or deceleration regime can be measured, therefore
The vibration i.e. axis transmitted in tire rotary shaft 14 can be evaluated to transmit, and can be used in the evaluation of sound in vehicle chamber.
In the embodiment shown in fig. 3, it will be adjusted to advise around the front and back power of the torque of tire rotary shaft 14 or tire T
The load of tire T is adjusted to defined value later, and is fixed tire rotary shaft 14 using fixed cell 34 by fixed value.Cause
This, is able to carry out the measurement of more accurate dynamic load.
But the opportunity for carrying out the fixation of the adjustment and tire rotary shaft 14 of torque or front and back power is without being limited thereto.For example, can
To be the revolving process before adjustment torque or front and back power (i.e. before acceleration and deceleration), the load of tire is adjusted to defined value simultaneously
Fixed tire rotary shaft 14, alternatively, being in addition also possible to the rank that tire static is pressed on to roller before rotating tire
The load of tire is adjusted to defined value and fixed tire rotary shaft 14 by section.If in the rear to wheel of fixed tire rotary shaft 14
Tire applies torque, then load becomes smaller, and cannot maintain above-mentioned defined value, therefore accuracy decline.Therefore, higher precision is being obtained
Aspect, preferably fix tire rotary shaft after being adjusted to torque or front and back power as described above.
In addition, being the adjustment process for the torque or front and back power that will be applied to tire rotary shaft 14 in the above-described embodiment
The detection process S6 of S3 and the sound issued from tire T are performed separately, but can also carry out two-step simultaneously, that is, by
Torque or front and back power are adjusted while detecting sound, so that the adjustment completion with torque or front and back power simultaneously terminates sound
The detection of sound.
Several embodiments of the invention is explained above, but these embodiments only prompt as an example, purpose is simultaneously
It is not the range for limiting invention.These embodiments can be implemented by other various modes, and can not depart from invention
Purport in the range of carry out it is various omit, displacement, change.If these embodiments, its deformation be contained in invention range,
Purport is then similarly contained in the invention described in the claims and its equivalent range.
Claims (7)
1. a kind of tire noise experimental rig, has:
Roller is crimped with tire and can be rotated；
Tire rotary shaft, is pivotably supported tire；
Sound equipment measures space, is used to that tire to be arranged in inside, and measure noise；
Tire power source can apply driving force or brake force to the tire rotary shaft；
Rotary force measuring unit is measured around the torque of tire rotary shaft or the front and back power of tire；
Control unit is revolved using the tire power source to the tire based on the measurement result of the rotary force measuring unit
Shaft applies driving force or brake force, to be adjusted to the front and back power of torque or tire around tire rotary shaft；And
Sound transducer detects the sound issued from tire.
2. tire noise experimental rig according to claim 1, which is characterized in that have:
Tire is pressed on the roller by press unit；
Load measuring units are measured to as tire to pressing force, that is, load of the roller；And
Fixed cell, the tire rotary shaft is fixed on pressing direction,
The measurement result of the tire noise experimental rig based on the load measuring units, is adjusted using the press unit
The load of tire, and it is using the fixed cell that the tire rotary shaft is fixed on pressing direction after load adjustment.
3. tire noise experimental rig according to claim 1 or 2, which is characterized in that
The sound transducer is made of multiple microphones that the side in tire is arranged along the longitudinal direction, using described more
A microphone includes the sound issued from tire simultaneously.
4. a kind of tire noise test method comprising following steps:
Tire is rotatably mounted in tire rotary shaft；
The tire is pressed on into roller and is allowed to rotate；
It is measured using front and back power of the rotary force measuring unit to torque or tire around tire rotary shaft, while utilizing tire
Power source applies driving force or brake force to the tire rotary shaft, thus to the front and back of torque or tire around tire rotary shaft
Power is adjusted；And
In sound equipment measurement space, in the state of being applied with the torque adjusted in the above described manner or front and back power, utilize
Sound transducer detects the sound issued from tire.
5. tire noise test method according to claim 4, which comprises the following steps:
It measures to as tire to pressing force, that is, load of the roller, and is adjusted based on the measurement result of the load
The load of tire；
It is using fixed cell that the tire rotary shaft is fixed on pressing direction after load adjustment；And
By the tire rotary shaft pressing direction on fix and be applied with the torque adjusted in the above described manner or
In the state of the power of front and back, the load of tire is measured.
6. tire noise test method according to claim 5, which is characterized in that
The load of adjustment tire after power is adjusted before and after to the torque or tire around tire rotary shaft, and
The tire rotary shaft is fixed using the fixed cell after load adjustment.
7. the tire noise test method according to any one of claim 4~6, which is characterized in that
The sound transducer is made of multiple microphones that the side in tire is arranged along the longitudinal direction, using described more
A microphone includes the sound issued from tire simultaneously.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017235417A JP7011452B2 (en) | 2017-12-07 | 2017-12-07 | Tire noise test equipment and method |
| JP2017-235417 | 2017-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109900353A true CN109900353A (en) | 2019-06-18 |
Family
ID=66629343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811405536.6A Pending CN109900353A (en) | 2017-12-07 | 2018-11-23 | Tire noise experimental rig and method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7011452B2 (en) |
| CN (1) | CN109900353A (en) |
| DE (1) | DE102018131297A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102018131297A1 (en) | 2019-06-13 |
| JP2019100980A (en) | 2019-06-24 |
| JP7011452B2 (en) | 2022-01-26 |
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