CN105651512B - A kind of automobile drive axle master subtracts gear enclosed mass detection method - Google Patents
A kind of automobile drive axle master subtracts gear enclosed mass detection method Download PDFInfo
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- CN105651512B CN105651512B CN201610255229.9A CN201610255229A CN105651512B CN 105651512 B CN105651512 B CN 105651512B CN 201610255229 A CN201610255229 A CN 201610255229A CN 105651512 B CN105651512 B CN 105651512B
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- drive axle
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- tacho
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of automobile drive axle masters to subtract gear enclosed mass detection method, includes the following steps：1）Vibration acceleration sensor is installed on the babinet of drive axle, tacho-pulse sensor is installed in the input terminal of drive axle；2）Vibration acceleration signal is obtained, obtains the rotational speed pulse signal of output；3）By the input terminal rotational speed pulse signal of acquisition, vibration acceleration signal input computer；4）Computer is according to the rotational speed pulse signal of acquisition, vibration-time signal is converted into vibration-angle position signal, drive axle rejected region to be measured is positioned using variation rotary angle position information corresponding with its of the vibration signal of driving bridge main reducing gear to be measured rotation.The present invention runs the method for health status characteristic information using the method for vibration signal peak value searching to extract it, can greatly reduce traditional subjective assessment and misjudge and judge by accident caused by driving bridge main reducing gear whether there is enclosed mass defect.
Description
Technical field
The present invention relates to auto NVH (vibration, noise, sound vibration roughness) detection technique field more particularly to a kind of automobiles
Driving bridge main reducing gear enclosed mass detection method.
Background technology
Drive axle is an important spare part in automotive transmission, carries the transportation work of power, while also to whole
The noise contribution of vehicle is larger.In the course of work of drive axle, the exception of any one component can all cause drive axle work different
Often, so as to cause axle noise or initial failure.For drive axle manufacturing enterprise, the bench detection of drive axle mainly according to
Subjective judgement is carried out to noise of the drive axle in bench detection by operating personnel, it is difficult to quantitatively evaluating drive axle operating condition, easily
It causes to misjudge and judge by accident.Simultaneously, because without objective vibration test equipment, also very big be stranded is brought for fault diagnosis from now on
It is difficult.
Gear teeth face protrusion (enclosed mass) would generally be caused in drive axle operation process caused by fabricating precision
Abnormal vibrations, and then the noise of vehicle can be caused abnormal or even cause the howling of system.Automobile drive axle howling is a kind of
The pure tone of high frequency, therefore be easy to by ear recognition.As the reduction and customer of the main noise of automobile are to automobile sound product
The raising of matter requirement, the control of howling are very urgent., it is necessary to be passed to customer at it after the completion of drive axle manufacture assembling
Its vibration and quality of uttering long and high-pitched sounds effectively are identified before.The technology of current identification howling is to measure to drive on offline vibration detection rack
The gear mesh vibration characteristic of dynamic bridge is to investigate its howling, compared with traditional subjective detection by human auditory system, this be compared with
Advanced and reliable method.How tested to extract using a kind of effective vibration signal detection method the difficult point of the method is
The characteristic information of object.
The content of the invention
For deficiencies of the prior art, it is an object of the invention to provide a kind of automobile drive axle masters to subtract gear
Enclosed mass detection method runs the method for health status characteristic information, energy using the method for vibration signal peak value searching to extract it
Enough greatly reduce traditional subjective assessment to misjudge and judge by accident caused by driving bridge main reducing gear whether there is enclosed mass defect.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is such：A kind of automobile drive axle master subtracts
Gear enclosed mass detection method, it is characterised in that：Include the following steps：
1) vibration acceleration sensor is installed on the babinet of drive axle, is passed in the input terminal installation tacho-pulse of drive axle
Sensor；
2) input terminal of drive axle is driven by driving motor, and passes through vibration acceleration sensor and obtains vibration acceleration
Signal obtains the rotational speed pulse signal of output by input terminal tacho-pulse sensor；
3) the input terminal rotational speed pulse signal of acquisition, vibration acceleration signal are inputted into number after amplification and filtering process
According to collector, after converting analog signals into digital signal by data collector, computer is inputted；
4) vibration-time signal is converted into vibration-angle position and believed by computer according to the rotational speed pulse signal of acquisition
Number, it is positioned using variation rotary angle position information corresponding with its of the vibration signal of driving bridge main reducing gear to be measured rotation
Drive axle rejected region to be measured.
Further, in step 4), the driving gear of drive axle and the rotary angle position of driven gear are by synchronous acquisition
Tacho-pulse position：
Pd=Np
In formula：Pd- driving gear rotates a circle corresponding tacho pulse number；
Ps- driven gear rotates a circle corresponding tacho pulse number；
Np- driving end rotates a circle corresponding tacho pulse number；
Nd- driving gear the number of teeth；
Ns- driven gear the number of teeth；
When there is enclosed mass, exciting caused by enclosed mass is much larger than normal data value, with the corresponding rotating speed of this exceptional data point
Whether pulse is present with the exciting amplitude of same size to calculate after the gear rotates a circle, if there is then thinking that the gear goes out
Existing enclosed mass.
Compared with prior art, the invention has the advantages that：
1st, automobile drive axle master of the invention subtracts gear enclosed mass detection method, is searched using the method for vibration signal peak value searching
" short time spikes " in rope vibration signal, these spikes can connect in such as enclosed mass, plaque, peeling, spallation and irregular metal
Occur when tactile, this phenomenon can be disappeared in since energy is too small in traditional frequency spectrum analysis method；Meanwhile if a gear is same
When there are multiple teeth enclosed mass occur, common using order analysis method is difficult to obtain accurate fault message；And the present invention uses
Peak value searching detection method vibration-time signal is converted into vibration-angle position signal, utilize main in drive axle to be measured
Subtract angular position information and the time signal peak value of gear rotation to position test specimen noise position.
2nd, the present invention can be greatly reduced traditional subjectivity and commented by the operating condition of quantization method objective evaluation drive axle
It misjudges and judges by accident caused by valency, the quality and noise failure subtracted for raising automobile drive axle master plays key effect.
Description of the drawings
Fig. 1 is certain to driving bridge main reducing gear schematic diagram.
Fig. 2 is vibration-time signal of driving bridge main reducing gear rotation.
Fig. 3 is vibration-angle position signal of driving bridge main reducing gear rotation.
Specific embodiment
Below in conjunction with accompanying drawings and embodiments, the invention will be further described.
Embodiment：A kind of automobile drive axle master subtracts gear enclosed mass detection method, includes the following steps：
1) vibration acceleration sensor is installed on the babinet of drive axle, is passed in the input terminal installation tacho-pulse of drive axle
Sensor；
2) input terminal of drive axle is driven by driving motor, and passes through vibration acceleration sensor and obtains vibration acceleration
Signal obtains the rotational speed pulse signal of output by input terminal tacho-pulse sensor；
3) by (input terminal) rotational speed pulse signal of acquisition, (drive axle babinet) vibration acceleration signal by amplification and filter
Input data collector after ripple processing after converting analog signals into digital signal by data collector, inputs computer；
4) vibration-time signal is converted into vibration-angle position and believed by computer according to the rotational speed pulse signal of acquisition
Number, it is positioned using variation rotary angle position information corresponding with its of the vibration signal of driving bridge main reducing gear to be measured rotation
Drive axle rejected region to be measured；Test specimen is mainly positioned based on the peak value of angular position information and time signal using vibration signal
Rejected region.
The rotary angle position of driving gear and driven gear can be positioned by the tacho-pulse of synchronous acquisition：
Pd=Np；
In formula：Pd- driving gear rotates a circle corresponding tacho pulse number；
Ps- driven gear rotates a circle corresponding tacho pulse number；
Np- driving end rotates a circle corresponding tacho pulse number；
Nd- driving gear the number of teeth；
Ns- driven gear the number of teeth.
If there is enclosed mass on gear, the accumulation signal generated can repeat after a full 360 degrees of rotation, gear rotation
Angle position can be positioned by rotational speed pulse signal.It is found by the vibration signal for comparing fault data and normal data,
When there is enclosed mass, exciting caused by enclosed mass is much larger than normal data value (such as Fig. 2), generally when bag exciting amplitude is more than in engineering
At 3 times of vibration data root-mean-square value, it is believed that be that vibration data exception occurs, then with the corresponding rotating speed of this exceptional data point
Whether pulse is present with the exciting amplitude of same size to calculate after the gear rotates a circle, if there is then thinking that the gear goes out
Existing enclosed mass.
As a kind of specific embodiment, referring to Fig. 1, the driving gear number of teeth is 7, and the driven gear number of teeth is 43, driving tooth
Certain tooth is broken off on wheel, enclosed mass occurs on another tooth.Fig. 2 is vibration-time signal that test obtains, in computer
Time-based vibration signal is inside converted to the vibration signal based on angle position first, then searches for " short time spikes ", root
Exemplar fault message is determined according to angle position of the source of trouble in rotary course and reproduction number.Fig. 3 be test obtain shake
- angle position signal is moved, every turn of short time spikes fix appearance once in figure, while two spike angles in 360 degree are opposite
Position is 102.86 degree, is each space of teeth of driving gear (2 times of 1/7*360=51.43), thus may determine that driving gear
Occur there are two tooth it is abnormal, and in a rotational direction this two abnormal tooth interphases every a normal tooth.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than restriction technologies side
Case, it will be understood by those of ordinary skill in the art that, those are modified or replaced equivalently technical scheme, and
The objective and scope of the technical program are not departed from, should be covered by the scope of the claims of the present invention.
Claims (1)
1. a kind of automobile drive axle master subtracts gear enclosed mass detection method, it is characterised in that：Include the following steps：
1) vibration acceleration sensor is installed on the babinet of drive axle, in the input terminal installation tacho-pulse sensing of drive axle
Device；
2) input terminal of drive axle is driven by driving motor, and vibration acceleration is obtained by vibration acceleration sensor and is believed
Number, the rotational speed pulse signal exported is obtained by input terminal tacho-pulse sensor；
3) by the input terminal rotational speed pulse signal of acquisition, vibration acceleration signal, input data is adopted after amplification and filtering process
Storage after converting analog signals into digital signal by data collector, inputs computer；
4) vibration-time signal is converted into vibration-angle position signal according to the rotational speed pulse signal of acquisition by computer,
It is treated using variation rotary angle position information corresponding with its of the vibration signal of driving bridge main reducing gear to be measured rotation to position
Survey drive axle rejected region；
Wherein, the driving gear of drive axle and the rotary angle position of driven gear are positioned by the tacho-pulse of synchronous acquisition：
Pd=Np
<mrow>
<msub>
<mi>P</mi>
<mi>s</mi>
</msub>
<mo>=</mo>
<msub>
<mi>N</mi>
<mi>p</mi>
</msub>
<mo>*</mo>
<mfrac>
<msub>
<mi>N</mi>
<mi>s</mi>
</msub>
<msub>
<mi>N</mi>
<mi>d</mi>
</msub>
</mfrac>
</mrow>
In formula：Pd- driving gear rotates a circle corresponding tacho pulse number；
Ps- driven gear rotates a circle corresponding tacho pulse number；
Np- driving end rotates a circle corresponding tacho pulse number；
Nd- driving gear the number of teeth；
Ns- driven gear the number of teeth；
When there is enclosed mass, exciting caused by enclosed mass is much larger than normal data value, with the corresponding tacho-pulse of this exceptional data point
The exciting amplitude for whether being present with same size after the gear rotates a circle is calculated, if there is then thinking that the gear wraps
Block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610255229.9A CN105651512B (en) | 2016-04-21 | 2016-04-21 | A kind of automobile drive axle master subtracts gear enclosed mass detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610255229.9A CN105651512B (en) | 2016-04-21 | 2016-04-21 | A kind of automobile drive axle master subtracts gear enclosed mass detection method |
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| CN105651512A CN105651512A (en) | 2016-06-08 |
| CN105651512B true CN105651512B (en) | 2018-05-18 |
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| CN201610255229.9A Active CN105651512B (en) | 2016-04-21 | 2016-04-21 | A kind of automobile drive axle master subtracts gear enclosed mass detection method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016225403A1 (en) * | 2016-12-19 | 2018-06-21 | Robert Bosch Gmbh | Method and device for determining a position of an actuating element |
| JP7237422B2 (en) * | 2019-01-11 | 2023-03-13 | ジヤトコ株式会社 | inspection equipment |
| CN111350804B (en) * | 2020-02-25 | 2021-08-03 | 江苏大学 | Chain wheel abrasion on-line monitoring system and grain combine chain transmission system |
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|---|---|---|---|---|
| CN102288286A (en) * | 2011-06-16 | 2011-12-21 | 中国科学院沈阳自动化研究所 | Method for analyzing and evaluating measure point precision of gearbox in vibration acceleration sensor |
| CN105335698A (en) * | 2015-09-15 | 2016-02-17 | 河南理工大学 | Gear failure diagnosis method based on adaptive genetic algorithm and SOM (Self-Organizing Map) network |
| CN105352728A (en) * | 2015-11-30 | 2016-02-24 | 上汽通用五菱汽车股份有限公司 | System and method for detecting vibration performance of mating gear |
| CN105352726A (en) * | 2015-10-20 | 2016-02-24 | 宁波大学 | Fault diagnosis method for gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9797808B2 (en) * | 2014-05-16 | 2017-10-24 | RMCI, Inc. | Diagnosis of gear condition by comparing data from coupled gears |
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2016
- 2016-04-21 CN CN201610255229.9A patent/CN105651512B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288286A (en) * | 2011-06-16 | 2011-12-21 | 中国科学院沈阳自动化研究所 | Method for analyzing and evaluating measure point precision of gearbox in vibration acceleration sensor |
| CN105335698A (en) * | 2015-09-15 | 2016-02-17 | 河南理工大学 | Gear failure diagnosis method based on adaptive genetic algorithm and SOM (Self-Organizing Map) network |
| CN105352726A (en) * | 2015-10-20 | 2016-02-24 | 宁波大学 | Fault diagnosis method for gear |
| CN105352728A (en) * | 2015-11-30 | 2016-02-24 | 上汽通用五菱汽车股份有限公司 | System and method for detecting vibration performance of mating gear |
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| CB03 | Change of inventor or designer information |
Inventor after: Li Wenli Inventor after: Shi Xiaohui Inventor after: Shi Quan Inventor after: Wang Jingjing Inventor after: Guo Kai Inventor before: Li Wenli Inventor before: Shi Xiaohui Inventor before: Shi Quan Inventor before: Wang Jingjing |
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Effective date of registration: 20170703 Address after: No. 69 lijiatuo Chongqing District of Banan City Road 400054 red Applicant after: Chongqing University of Technology Applicant after: Chongqing Academy of Science & Technology Applicant after: Jianan Industry Co., Ltd., Sichuan Prov. Address before: No. 69 lijiatuo Chongqing District of Banan City Road 400054 red Applicant before: Chongqing University of Technology Applicant before: Chongqing Academy of Science & Technology |
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