CN104792519A - Offline automobile gearbox NVH (noise, vibration and harshness) detecting method - Google Patents
Offline automobile gearbox NVH (noise, vibration and harshness) detecting method Download PDFInfo
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- CN104792519A CN104792519A CN201510164323.9A CN201510164323A CN104792519A CN 104792519 A CN104792519 A CN 104792519A CN 201510164323 A CN201510164323 A CN 201510164323A CN 104792519 A CN104792519 A CN 104792519A
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Abstract
The invention provides an offline automobile gearbox NVH (noise, vibration and harshness) detecting method. A system for the offline automobile gearbox NVH detecting method comprises an offline analyzer, a control unit, a data acquisition system, a loading system, a driving system and a gearbox. The offline automobile gearbox NVH detecting method is characterized in that the offline analyzer performs offline analysis via an advanced order analysis algorithm, and the gearbox is the object for the offline analysis and provided with a vibration noise pickup sensor. The offline automobile gearbox NVH detecting method has the advantages that defects of the prior art are overcome, and efficiency in NVH detection in an offline process of the gearbox can be improved effectively.
Description
Technical field
The present invention relates to a kind of wheel box NVH off-line test method, for automobile gearbox NVH off-line test.
Background technology
Automobile gearbox is the critical piece of automobile, be responsible for the transmission of power, also bring noise to car load simultaneously, in the course of work of wheel box, the exception of any one parts all can cause wheel box operation irregularity, thus cause wheel box to produce noise, for wheel box manufacturing enterprise, the bench detection of wheel box mainly relies on operating personnel to carry out subjective judgement to wheel box at the noise of bench detection, be difficult to quantitatively evaluating wheel box operating condition, easily cause misjudgement and erroneous judgement, simultaneously, owing to there is no objective vibration test equipment, also for fault vibration from now on brings very large difficulty.
Summary of the invention
The object of the invention is to the problems referred to above solving prior art existence, a kind of automobile gearbox NVH off-line test method is provided.
For realizing the object of the invention, the invention provides a kind of automobile gearbox NVH off-line test method, comprise the analyser that rolls off the production line, control module, data actuation, loading system, drive system, wheel box, vibration noise pickoff sensor installed by described wheel box.
The present invention's innovation is, the described analyser that rolls off the production line adopts order analysis algorithm to analyze vibration noise, adopts high accuracy data interpolation method for resampling, sets up self study order with reference to spectral line and Threshold Alerts method.
The present invention's innovation is, described loading system and drive system can provide the NVH that wheel box is suitable to detect operating mode.
The present invention's innovation is, the described analyser that rolls off the production line achieves automatically to load and detects sequence, testing process robotization.
The present invention's innovation is, the described analyser that rolls off the production line has self-learning function, and program carries out sample self study according to set algorithm, for NVH off-line test provides objective detection standard.
The present invention's innovation is, compared with Legacy Status monitoring technique monitoring equipment overall vibration energy magnitude, NVH off-line test technology utilizes order analysis technology that the signal picked up is processed and angular domain resampling after filtering, then order spectrum is generated through Fourier transform, for the every bit spectral line in order spectral line, calculate its standard deviation S, and make to have done side-play amount adjustment with reference to spectral line entirety relative to zero line, namely obtain with reference to spectral line.Adopt order analysis method to overcome the shortcoming of variable speed motion " frequency ambiguity " in legacy frequencies analysis, well solve the key technical problem of wheel box frequency domain character signal extraction.
The invention has the beneficial effects as follows: realize the robotization of wheel box NVH off-line test, for wheel box NVH off-line test provides objective standard, and the defective reason of wheel box NVH off-line test result is analyzed.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of a kind of automobile gearbox NVH off-line test method of the present invention.
Embodiment
Embodiment of the present invention is described in detail, makes the advantage of invention and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
See accompanying drawing 1, a kind of automobile gearbox NVH off-line test method, comprise the analyser that rolls off the production line, control module, data actuation, loading system, drive system, wheel box, vibration noise pickoff sensor installed by described wheel box.
The principle of work of invention is below described in detail in detail:
Wheel box to be measured enters monitor station by automatic production line, and vibration noise pickoff sensor contacts with gear box automatically.The analyser that rolls off the production line sends instruction according to presetting cycle tests to control module, and data acquisition system (DAS) carries out high sampling rate collection to the parameter related in wheel box NVH off-line test, and meanwhile, the analyser that rolls off the production line is to data analysis.Be completed, roll off the production line analyser inventory analysis result and test data, detected wheel box and exited monitor station, waits for that next wheel box enters monitor station.
Above embodiment is only for illustrating technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and to be implemented; can not limit the scope of the invention with this, the equivalence change that all Spirit Essences according to the present invention do or modification are all encompassed in protection scope of the present invention.
Claims (3)
1. an automobile gearbox NVH off-line test method, it is characterized in that: comprise the analyser that rolls off the production line, control module, data actuation, loading system, drive system, wheel box, vibration noise pickoff sensor installed by described wheel box.
2. a kind of automobile gearbox NVH off-line test method according to claim 1, is characterized in that: the described analyser that rolls off the production line adopts order analysis algorithm.
3. a kind of automobile gearbox NVH off-line test method according to claim 1, is characterized in that: described vibration noise pickoff sensor, is in power train process, produce vibration acceleration for detecting wheel box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164323.9A CN104792519A (en) | 2015-04-05 | 2015-04-05 | Offline automobile gearbox NVH (noise, vibration and harshness) detecting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510164323.9A CN104792519A (en) | 2015-04-05 | 2015-04-05 | Offline automobile gearbox NVH (noise, vibration and harshness) detecting method |
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| CN104792519A true CN104792519A (en) | 2015-07-22 |
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| CN201510164323.9A Pending CN104792519A (en) | 2015-04-05 | 2015-04-05 | Offline automobile gearbox NVH (noise, vibration and harshness) detecting method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092310A (en) * | 2016-04-21 | 2016-11-09 | 重庆理工大学 | A kind of automotive transmission vibration noise off-line test method |
| CN107436236A (en) * | 2016-05-25 | 2017-12-05 | 长城汽车股份有限公司 | The noise detecting method and detecting system of vehicle gear box |
| CN107677355A (en) * | 2017-09-26 | 2018-02-09 | 重庆长安汽车股份有限公司 | Differentiate the method for the hot Idling wobble of vehicle |
| CN108120497A (en) * | 2017-12-12 | 2018-06-05 | 万向钱潮（上海）汽车***有限公司 | A kind of noise rating system of electronic brake system |
| CN108387308A (en) * | 2018-02-27 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | Gearbox is uttered long and high-pitched sounds off-line test method and its detecting system |
| CN108535012A (en) * | 2018-03-23 | 2018-09-14 | 重庆长安汽车股份有限公司 | A kind of transmission squawk NVH performances off-line test method |
| CN109100137A (en) * | 2018-07-10 | 2018-12-28 | 重庆理工清研凌创测控科技有限公司 | A kind of NVH off-line test platform of rear axle reductor |
| US10607626B1 (en) | 2018-11-20 | 2020-03-31 | Ford Motor Company | Method to remove background and sensor overload artifacts |
| CN112284720A (en) * | 2020-10-16 | 2021-01-29 | 中国航发四川燃气涡轮研究院 | Acoustic test-based fault diagnosis method for central transmission bevel gear of aircraft engine |
| CN112461552A (en) * | 2020-11-16 | 2021-03-09 | 上海拿森汽车电子有限公司 | Detection method and system of electronic power-assisted brake system and readable storage medium |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092310A (en) * | 2016-04-21 | 2016-11-09 | 重庆理工大学 | A kind of automotive transmission vibration noise off-line test method |
| CN107436236A (en) * | 2016-05-25 | 2017-12-05 | 长城汽车股份有限公司 | The noise detecting method and detecting system of vehicle gear box |
| CN107436236B (en) * | 2016-05-25 | 2020-03-03 | 长城汽车股份有限公司 | Noise detection method and system for vehicle gearbox |
| CN107677355A (en) * | 2017-09-26 | 2018-02-09 | 重庆长安汽车股份有限公司 | Differentiate the method for the hot Idling wobble of vehicle |
| CN108120497A (en) * | 2017-12-12 | 2018-06-05 | 万向钱潮（上海）汽车***有限公司 | A kind of noise rating system of electronic brake system |
| CN108120497B (en) * | 2017-12-12 | 2020-02-14 | 万向钱潮（上海）汽车***有限公司 | Noise evaluation system of electronic parking braking system |
| CN108387308B (en) * | 2018-02-27 | 2019-11-05 | 安徽江淮汽车集团股份有限公司 | Gearbox is uttered long and high-pitched sounds off-line test method and its detection system |
| CN108387308A (en) * | 2018-02-27 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | Gearbox is uttered long and high-pitched sounds off-line test method and its detecting system |
| CN108535012B (en) * | 2018-03-23 | 2019-07-05 | 重庆长安汽车股份有限公司 | A kind of transmission squawk NVH performance off-line test method |
| CN108535012A (en) * | 2018-03-23 | 2018-09-14 | 重庆长安汽车股份有限公司 | A kind of transmission squawk NVH performances off-line test method |
| CN109100137A (en) * | 2018-07-10 | 2018-12-28 | 重庆理工清研凌创测控科技有限公司 | A kind of NVH off-line test platform of rear axle reductor |
| US10607626B1 (en) | 2018-11-20 | 2020-03-31 | Ford Motor Company | Method to remove background and sensor overload artifacts |
| CN112284720A (en) * | 2020-10-16 | 2021-01-29 | 中国航发四川燃气涡轮研究院 | Acoustic test-based fault diagnosis method for central transmission bevel gear of aircraft engine |
| CN112284720B (en) * | 2020-10-16 | 2023-01-13 | 中国航发四川燃气涡轮研究院 | Acoustic test-based fault diagnosis method for central transmission bevel gear of aircraft engine |
| CN112461552A (en) * | 2020-11-16 | 2021-03-09 | 上海拿森汽车电子有限公司 | Detection method and system of electronic power-assisted brake system and readable storage medium |
| CN112461552B (en) * | 2020-11-16 | 2023-09-26 | 上海拿森汽车电子有限公司 | Detection method and system of electronic power-assisted braking system and readable storage medium |
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Application publication date: 20150722 |