Fault determination method and device for ball bearing and storage medium

A determination method and ball bearing technology, applied in the testing of mechanical components, testing of machine/structural components, instruments, etc., can solve the problems of rolling bearing fatigue peeling, failure to work normally, bearing assembly damage, etc., to improve efficiency and accuracy. the effect of eliminating noise pollution

Active Publication Date: 2022-05-31
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology

[0002] At present, in liquid rocket engines, about 7% of the failures in rotating machinery are caused by rolling bearing failures. During the operation of bearings, improper assembly, poor lubrication, foreign matter intrusion, corrosion and overload may cause premature failure. Even if the installation, lubrication and maintenance are normal, after a period of operation, the rolling bearing will appear fatigue, peeling and wear and cannot work normally

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  • Fault determination method and device for ball bearing and storage medium
  • Fault determination method and device for ball bearing and storage medium
  • Fault determination method and device for ball bearing and storage medium

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[0045] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and their sequence is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0046] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "ex...

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Abstract

The invention discloses a ball bearing fault determination method and device and a storage medium, and relates to the technical field of rolling bearings. The fault determination method of the ball bearing comprises the following steps: acquiring a vibration signal of the ball bearing, and performing de-noising processing on each time period signal in the vibration signal based on a wavelet packet decomposition method to obtain each time period signal after de-noising processing; performing time-frequency analysis on the signal of each time period by using short-time Fourier transform to obtain the time period when the ball bearing has a fault and the fault frequency corresponding to the time period; based on a time-frequency analysis method of Choi-Williams distribution, carrying out refined analysis on the signal of the fault occurrence time period of the ball bearing, and when the fault frequency comprises the fault characteristic frequency of the ball bearing, determining the fault occurrence duration corresponding to the fault characteristic frequency according to the fault characteristic frequency of the ball bearing; and determining the fault type and the fault severity of the ball bearing according to the fault characteristic frequency of the ball bearing and the fault occurrence duration corresponding to the fault characteristic frequency.

Description

technical field [0001] The invention relates to the technical field of rolling bearings, in particular to a method, device and storage medium for determining a fault of a ball bearing. Background technique [0002] At present, in liquid rocket engines, about 7% of the failures in rotating machinery are caused by rolling bearing failures. During the operation of bearings, improper assembly, poor lubrication, foreign matter intrusion, corrosion and overload may cause premature failure. Even if the installation, lubrication and maintenance are normal, after a period of operation, the rolling bearings will suffer from fatigue, peeling and wear and cannot work normally. [0003] As ball bearings are an important type of rolling bearings, it is particularly important to provide a method that can quickly and accurately judge bearing failures. Contents of the invention [0004] Based on this, the present invention discloses a method, device and storage medium for determining a fa...

Claims

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Application Information

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IPC IPC(8): G06K9/00G01M13/045
CPCG01M13/045G06F2218/06G06F2218/08G06F2218/12
Inventor 杜飞平谭永华王春民
Owner XIAN AEROSPACE PROPULSION INST
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