Offline automobile gearbox NVH (noise, vibration and harshness) detecting method

A technology of automobile gearbox and detection method, which is applied in the direction of measuring device, machine gear/transmission mechanism test, measurement of ultrasonic/sonic wave/infrasonic wave, etc., which can solve the problem of abnormal operation of gearbox, difficulty in fault vibration, and difficulty in quantitatively evaluating the operating state of gearbox And other issues

Inactive Publication Date: 2015-07-22
重庆理工清研凌创测控科技有限公司
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Problems solved by technology

[0002] The automobile gearbox is the main part of the car, responsible for the transmission of power, but also brings noise to the whole vehicle. During the working process of the gearbox, any abnormality of any part will cause the gearbox to work abnormally, which will cause the gearbox to generate noise. For gearbox manufacturers, the test bench of the gearbox mainly relies on the subjective judgment of the operator on the noise of the gearbox on the bench test. There is no objective vibration test equipment, which also brings great difficulties to future fault vibration

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  • Offline automobile gearbox NVH (noise, vibration and harshness) detecting method

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[0012] The implementation examples of the present invention are described in detail, so that the advantages and features of the invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0013] See attached figure 1 , an off-line detection method for NVH of an automobile gearbox, comprising an off-line analyzer, a control unit, a data acquisition system, a loading system, a drive system, and a gearbox, and a vibration and noise pickup sensor is installed in the gearbox.

[0014] The working principle of the invention is detailed below:

[0015] The gearbox to be tested enters the testing station through an automatic assembly line, and the vibration and noise pickup sensor automatically contacts the gearbox case. The off-line analyzer sends instructions to the control unit according to the preset test sequence, and the data acquisition system collects the parameters involved in the gearbox ...

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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 [0001] The invention relates to a gearbox NVH off-line detection method, which is used for the NVH off-line detection of automobile gearboxes. Background technique [0002] The automobile gearbox is the main part of the car, which is responsible for the transmission of power and also brings noise to the whole vehicle. During the working process of the gearbox, any abnormality of any part will cause the gearbox to work abnormally, which will cause the gearbox to generate noise. For gearbox manufacturers, the bench test of the gearbox mainly relies on the subjective judgment of the operator on the noise of the gearbox on the bench test. There is no objective vibration testing equipment, which also brings great difficulties to future fault vibration. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and to provide an off-line detection method for NVH of an automobile gea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01H17/00
Inventor 曾路荣
Owner 重庆理工清研凌创测控科技有限公司
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