Method for quantitatively identifying rolling bearing damage

A rolling bearing, quantitative identification technology, applied in the direction of measuring devices, special data processing applications, instruments, etc., can solve the problems that it is difficult to fully extract the characteristics of fault information, and it is not suitable for identifying early damage faults of rolling bearings
CN100516828CInactive Publication Date: 2009-07-22XI AN JIAOTONG UNIV
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2009-07-22
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention discloses a method for quantitatively identifying rolling bearing damage. Said method includes the following steps: making rolling bearing vibration signal undergo the process of second generation small wave packet decomposition; then respectively reconstructing decomposed signal of every frequency band; utilizing Hilbert conversion and demodulation to analyze every frequency band signal to obtain envelope spectrum correspondent to frequency band signal; calculating decibel value of envelope spectrum magnitude correspondent to rolling bearing failure characteristic frequency in every frequency band, extracting maximum value of decibel value correspondent to failure characteristic frequency in every frequency band, then quantitatively identifying rolling bearing early damage condition.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of early failure prediction of mechanical equipment, and in particular relates to a quantitative identification method for early damage of rolling bearings. Background technique

[0002] Rolling bearings are the most widely used mechanical parts in rotating machinery, and they are also one of the most vulnerable components. Rolling bearings may be damaged due to various reasons during operation, such as improper assembly, poor lubrication, moisture and foreign matter intrusion, corrosion and overload, etc. may cause premature damage to rolling bearings. Even if the installation, lubrication and maintenance are normal, after a period of operation, the rolling bearing will suffer from fatigue, peeling and wear and cannot work normally. Therefore, it is an important research direction in the field of fault diagnosis to quantitatively identify rolling bearing faults, accurately determine the severity of damage, and preve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More