Gear failure keyless phase angle domain average computing order analysis method

A technology of order analysis and angular domain, which is applied in the field of average calculation order analysis of gear failure keyless phase angle domain, which can solve problems such as fault diagnosis

Active Publication Date: 2014-01-08
XI AN JIAOTONG UNIV
View PDF7 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a gear fault keyless phase angle domain average calculation order analysis m...

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gear failure keyless phase angle domain average computing order analysis method
  • Gear failure keyless phase angle domain average computing order analysis method
  • Gear failure keyless phase angle domain average computing order analysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example

[0136] The effectiveness of the invention is verified by the vibration signal measured by a planetary reducer test bench. The test bench includes four parts: motor, reducer, generator and console. The planetary reducer is a two-stage precision reducer with a reduction ratio of 32. The structural parameters of the planetary reducer are shown in Table 1 below.

[0137] Table 1 Structural parameters of star reducer

[0138]

[0139] Calculate the meshing frequency of the first stage transmission sun gear and planetary gear according to the parameters in Table 1 and the formula for calculating the meshing frequency of the planetary gear. The formula for calculating the meshing frequency of the planetary gear is as follows:

[0140] f 啮合 =(n 1 -n H )×z 1 (19)

[0141] In the formula, n 1 : Sun gear speed; n H : Planetary carrier speed; z 1 : Number of sun gear teeth.

[0142] From formula (19) get f 啮合 =10.5n 1 . 10.5 is an important parameter. Compared with th...

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

PUM

No PUM Login to view more

Abstract

The invention provides a gear failure keyless phase angle domain average computing order analysis method. The method comprises the steps that low-pass phase-protection filtering is conducted on collected accelerated speed signals, and time-frequency distribution of the signals is calculated through smooth pseudo Wigner-Ville distribution; the instantaneous frequency of a gear case rotary shaft is estimated according to a Viterbi optimal path search algorithm, key phase signals are used for estimating a model to conduct point-by-point integration on the instantaneous frequency, and an estimated key phase signal is obtained, calculation order analysis is conducted on the vibration accelerated speed signals through equal angle resampling and the angular domain average technology, and the order spectrum based on instantaneous frequency estimation is obtained. The order spectrogram can effectively reflect the feature information of gear case failures. The gear failure keyless phase angle domain average computing order analysis method integrates the advantages of the smooth pseudo Wigner-Ville distribution, the Viterbi optimal path search algorithm, the angular domain average technology and the calculation order analysis, and can effectively conduct fault diagnosis on a gear case working on the working station of variable speeds.

Description

technical field [0001] The invention belongs to the field of gear fault analysis methods, and in particular relates to a gear fault keyless phase angle field average calculation order analysis method. Background technique [0002] The traditional gearbox vibration test and the analysis and test of the test signal are carried out under constant speed and constant working conditions, but the gearboxes in actual work are often operated under variable speed and variable working conditions, such as wind power generators. Gearboxes, helicopter gearboxes, automotive reducers, cranes, etc. Take a crane as an example. The crane is responsible for lifting and transporting the ladle. When working, the gearbox undergoes a process of speed-up, speed-down and dumping. At present, in the calculation order analysis method used under the variable speed operating condition of the gearbox, the key phase signal of the rotating shaft is indispensable for the calculation order analysis of the ge...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01M13/02
Inventor 訾艳阳何正嘉曹宏瑞万志国冯超亮何水龙
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap