CN109142519A - A kind of vehicle steering wheel rotation identification of mode frequency method and identification device - Google Patents
A kind of vehicle steering wheel rotation identification of mode frequency method and identification device Download PDFInfo
- Publication number
- CN109142519A CN109142519A CN201810580047.8A CN201810580047A CN109142519A CN 109142519 A CN109142519 A CN 109142519A CN 201810580047 A CN201810580047 A CN 201810580047A CN 109142519 A CN109142519 A CN 109142519A
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- steering wheel
- vehicle steering
- vibration acceleration
- frequency
- excitation
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001133 acceleration Effects 0.000 claims abstract description 37
- 230000005284 excitation Effects 0.000 claims abstract description 34
- 238000005316 response function Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000013480 data collection Methods 0.000 claims description 3
- 238000013524 data verification Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention provides a kind of vehicle steering wheel rotation identification of mode frequency method and identification device.The recognition methods includes: sensor installation: vibration acceleration sensor is arranged in the vehicle steering wheel connected with steering column, the vibration acceleration sensor is arranged in pairs in and 15 positions that vehicle steering wheel is gone back under positive status at 9 points, and using straight line where the vibration acceleration sensor as Y-direction, steering column is axially Z-direction, records vibration acceleration sensor direction；Setting excitation: selection power hammer excitation, motivate exciting force a little along X to and excitation point symmetry the center of rotation two sides of the vehicle steering wheel are set；Data processing: arbitrarily choosing the frequency response function of two vibration acceleration sensors when one of excitation, and corresponding frequency is steering wheel around steering column rotation modal frequency at frequency response function opposite in phase.
Description
Technical field
The present invention relates to auto NVH testing fields, and in particular to a kind of vehicle steering wheel rotation identification of mode frequency method
And identification device.
Background technique
Model analysis improves the reliability of automobile and NVH performance is of great significance to.Currently, to white body and whole
The model analysis of vehicle and develop more and more mature.But the model analysis for components, especially automobile steering are coiled
Steering column rotates identification of mode frequency analysis, and there is presently no preferable solutions.
Summary of the invention
Primary and foremost purpose of the invention is to propose a kind of vehicle steering wheel rotation identification of mode frequency method, can accurately quickly
Efficiently identify that vehicle steering wheel rotates modal frequency around steering column.
The vehicle steering wheel rotation identification of mode frequency method provided according to the present invention, comprising steps of
Sensor installation: vibration acceleration sensor, the vibration are set in the vehicle steering wheel connected with steering column
Acceleration transducer is arranged in pairs in and 15 positions that vehicle steering wheel is gone back under positive status at 9 points, and with the vibration acceleration
Straight line is Y-direction where sensor, and steering column is axially Z-direction, records vibration acceleration sensor direction；
Setting excitation: selection power hammer excitation, motivate exciting force a little along X to and excitation point symmetry setting in the vehicle steering wheel
Center of rotation two sides；
Data processing: the frequency response function of two vibration acceleration sensors when one of them excitation point of any selection, frequency
Corresponding frequency is steering wheel around steering column rotation modal frequency at rate receptance function opposite in phase.
Preferably, the data processing step further includes test verifying: obtaining steering wheel around steering column rotation mode
After frequency, the frequency response function of another excitation point is chosen as data verification.Error information can be screened in this way, improve frequency
The accuracy of rate receptance function.
Preferably, the excitation point installs on the lateral spoke of the vehicle steering wheel.It in this way can be to avoid increasing
The influence for adding the accessories such as fixture to bring test result.
Preferably, the frequency range of the vibration acceleration sensor is 2 to 50 hertz.
Preferably, the power hammer excitation uses rubber hammer.
The present invention also provides the identification device for using above-mentioned vehicle steering wheel rotation identification of mode frequency method, identification dresses
It sets and includes:
Vibration acceleration sensor: for the vehicle steering wheel connected with steering column to be arranged in；The vibration acceleration
Sensor is arranged in pairs in and 15 positions that vehicle steering wheel is gone back under positive status at 9 points；
Exciting force hammer: excitation orientation motivates point symmetry to be arranged in institute perpendicular to straight line where the vibration acceleration sensor
State the center of rotation two sides of vehicle steering wheel；
Data collection system: the signal of the vibration acceleration sensor is received, and show that steering wheel rotates by modal calculation
Modal frequency is rotated to tubing string.
Vehicle steering wheel rotation identification of mode frequency method of the invention and identification device, by reasonably selecting excitation point
Position, the position for motivating point direction, vibration acceleration sensor are provided with reasonable steering wheel coordinate system, available accurate
Frequency test result；The installation of exciting force hammer and oscillatory acceleration sensor is small on the influence of frequency test result, available
More accurate frequency test result；Vehicle steering wheel is identical as real vehicle use state when test, improves frequency test result to NVH
The accuracy of judge.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that vehicle steering wheel of the invention rotates identification of mode frequency device.
Fig. 2 is that vehicle steering wheel rotates modal frequency curve graph.
Specific embodiment
It is for example related each to a specific embodiment of the invention by the description to embodiment below against attached drawing
The shape of component, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle etc. are made into one
The detailed description of step.
Such as Fig. 1, vehicle steering wheel of the invention rotates identification of mode frequency device, including vibration acceleration sensor 1: being used for
It is arranged in the vehicle steering wheel 2 connected with steering column；Vibration acceleration sensor 1 is arranged in pairs in vehicle steering wheel and returns
9 points under positive status and 15 positions；
Exciting force hammer 3: excitation orientation motivates point a and excitation point b symmetrical perpendicular to 1 place straight line of vibration acceleration sensor
It is arranged in the center of rotation two sides of vehicle steering wheel 2；
Data collection system 4: the signal of vibration acceleration sensor 1 is received, and obtains steering wheel around steering by modal calculation
Tubing string rotates modal frequency.
Preferably, excitation point installs on the lateral spoke 21 of vehicle steering wheel 2.It in this way can be to avoid increase fixture
The influence that equal accessories bring test result.
Preferably, the frequency range of vibration acceleration sensor is 2 to 50 hertz.
Preferably, 3 excitation of exciting force hammer uses rubber hammer.
Vehicle steering wheel of the invention rotates identification of mode frequency method, comprising steps of
Sensor installation: being arranged vibration acceleration sensor 1 in the vehicle steering wheel 2 connected with steering column, and vibration adds
Velocity sensor 1 is arranged in pairs in and 15 positions that vehicle steering wheel 2 is gone back under positive status at 9 points, and is sensed with vibration acceleration
1 place straight line of device is Y-direction, and steering column is axially Z-direction, records the direction of vibration acceleration sensor 1；
Setting excitation: 3 excitation of selection power hammer, motivate exciting force a little along X to and excitation point a and point b is motivated to be symmetricly set on vapour
The center of rotation two sides of vehicle steering wheel 2；
Data processing: the frequency response function of two vibration acceleration sensors 1 when one of excitation is chosen, in this reality
It applies in example, when choosing the excitation point position a, vehicle steering wheel 2 works as automobile in two frequency response functions of 9 points and 15 positions
When steering wheel 2 rotates, the vibration phase of two vibration acceleration sensors 1 of 9 points and 15 positions is answered on the contrary, therefore, choosing
Corresponding frequency is steering wheel around steering column rotation modal frequency, such as Fig. 2 at excitation dot frequency receptance function opposite in phase
It is shown.
Further, data processing step further includes test verifying: obtaining steering wheel around steering column rotation mode frequency
After rate, the frequency response function of another excitation point b is chosen as data verification.Error information can be screened in this way, improve frequency
The accuracy of rate receptance function.Vehicle steering wheel rotation modal frequency curve graph when choosing excitation point b should be identical as Fig. 2.
Claims (8)
1. a kind of vehicle steering wheel rotates identification of mode frequency method, it is characterised in that the recognition methods includes:
Sensor installation: vibration acceleration sensor, the vibration are set in the vehicle steering wheel connected with steering column
Acceleration transducer is arranged in pairs in and 15 positions that vehicle steering wheel is gone back under positive status at 9 points, and with the vibration acceleration
Straight line is Y-direction where sensor, and steering column is axially Z-direction, records vibration acceleration sensor direction；
Setting excitation: selection power hammer excitation, motivate exciting force a little along X to and excitation point symmetry setting in the vehicle steering wheel
Center of rotation two sides；
Data processing: the frequency response function of two vibration acceleration sensors when one of them excitation point of any selection, frequency
Corresponding frequency is steering wheel around steering column rotation modal frequency at rate receptance function opposite in phase.
2. vehicle steering wheel according to claim 1 rotates identification of mode frequency method, it is characterised in that at the data
Reason step further include test verifying: obtaining steering wheel around steering column rotate modal frequency after, choose another excitation point
Frequency response function is as data verification.
3. vehicle steering wheel according to claim 1 or 2 rotates identification of mode frequency method, it is characterised in that the excitation
Point installs on the lateral spoke of the vehicle steering wheel.
4. rotating identification of mode frequency method according to vehicle steering wheel described in right 3, it is characterised in that the vibration acceleration
The frequency range of sensor is 2 to 50 hertz.
5. vehicle steering wheel according to claim 4 rotates identification of mode frequency method, it is characterised in that the power hammer swashs
It encourages using rubber hammer.
6. a kind of vehicle steering wheel rotates identification of mode frequency device, characterized by comprising:
Vibration acceleration sensor: for the vehicle steering wheel connected with steering column to be arranged in；The vibration acceleration
Sensor is arranged in pairs in and 15 positions that vehicle steering wheel is gone back under positive status at 9 points；
Exciting force hammer: excitation orientation motivates point symmetry to be arranged in institute perpendicular to straight line where the vibration acceleration sensor
State the center of rotation two sides of vehicle steering wheel；
Data collection system: the signal of the vibration acceleration sensor is received, and show that steering wheel rotates by modal calculation
Modal frequency is rotated to tubing string.
7. vehicle steering wheel according to claim 6 rotates identification of mode frequency device, it is characterised in that the excitation point
Position is arranged on the lateral spoke of the vehicle steering wheel.
8. vehicle steering wheel according to claim 7 rotates identification of mode frequency device, it is characterised in that the vibration adds
The frequency range of velocity sensor is 2 to 50 hertz, and the power hammer excitation uses rubber hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580047.8A CN109142519A (en) | 2018-06-07 | 2018-06-07 | A kind of vehicle steering wheel rotation identification of mode frequency method and identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580047.8A CN109142519A (en) | 2018-06-07 | 2018-06-07 | A kind of vehicle steering wheel rotation identification of mode frequency method and identification device |
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| Publication Number | Publication Date |
|---|---|
| CN109142519A true CN109142519A (en) | 2019-01-04 |
Family
ID=64801975
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810580047.8A Pending CN109142519A (en) | 2018-06-07 | 2018-06-07 | A kind of vehicle steering wheel rotation identification of mode frequency method and identification device |
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| CN (1) | CN109142519A (en) |
Citations (9)
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|---|---|---|---|---|
| JPS63177032A (en) * | 1987-01-19 | 1988-07-21 | Nkk Corp | Impact type irregular excitation apparatus |
| CN102554928A (en) * | 2010-12-31 | 2012-07-11 | 中国科学院沈阳自动化研究所 | Control method and control device for quelling robot of vibration acceleration transducer |
| CN104198197A (en) * | 2014-09-11 | 2014-12-10 | 重庆长安汽车股份有限公司 | Method and device for testing dynamic stiffness of car-body mounting points |
| CN104330269A (en) * | 2014-11-26 | 2015-02-04 | 安徽佳通乘用子午线轮胎有限公司 | Method for testing damping ratio of tyre-rim combination body |
| CN106052849A (en) * | 2016-05-20 | 2016-10-26 | 西南交通大学 | Method of identifying non-stationary abnormal noise source in automobile |
| CN106777478A (en) * | 2016-11-15 | 2017-05-31 | 江铃汽车股份有限公司 | The method of vehicle cantilever Strength Analysis for Structural Parts |
| CN106918388A (en) * | 2015-12-28 | 2017-07-04 | 上海汽车集团股份有限公司 | A kind of frequency testing system of steering column |
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-
2018
- 2018-06-07 CN CN201810580047.8A patent/CN109142519A/en active Pending
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|---|---|---|---|---|
| JPS63177032A (en) * | 1987-01-19 | 1988-07-21 | Nkk Corp | Impact type irregular excitation apparatus |
| CN102554928A (en) * | 2010-12-31 | 2012-07-11 | 中国科学院沈阳自动化研究所 | Control method and control device for quelling robot of vibration acceleration transducer |
| CN104198197A (en) * | 2014-09-11 | 2014-12-10 | 重庆长安汽车股份有限公司 | Method and device for testing dynamic stiffness of car-body mounting points |
| CN104330269A (en) * | 2014-11-26 | 2015-02-04 | 安徽佳通乘用子午线轮胎有限公司 | Method for testing damping ratio of tyre-rim combination body |
| CN106918388A (en) * | 2015-12-28 | 2017-07-04 | 上海汽车集团股份有限公司 | A kind of frequency testing system of steering column |
| CN106052849A (en) * | 2016-05-20 | 2016-10-26 | 西南交通大学 | Method of identifying non-stationary abnormal noise source in automobile |
| CN106777478A (en) * | 2016-11-15 | 2017-05-31 | 江铃汽车股份有限公司 | The method of vehicle cantilever Strength Analysis for Structural Parts |
| CN107563009A (en) * | 2017-08-08 | 2018-01-09 | 中国汽车工程研究院股份有限公司 | A kind of automobile steering system CAE modal identification methods |
| CN107727390A (en) * | 2017-08-21 | 2018-02-23 | 江铃汽车股份有限公司 | Automobile power-transmission system flexural property method of testing |
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Application publication date: 20190104 |
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