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Planetary gear train gear tooth state evaluation method, device thereof, equipment and medium

A technology for planetary gear train and state assessment, applied in measurement devices, design optimization/simulation, special data processing applications, etc. Amplitude information and other issues, to achieve the effect of intuitive results, easy reference, and elimination of the influence of path modulation

Active Publication Date: 2021-10-01
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional fault diagnosis methods are mostly based on characteristic frequency identification, only using the frequency information of the shock vibration signal, ignoring the phase information and amplitude information, it is difficult to realize the identification of local fault types and the judgment of damage degree, and it is impossible to accurately evaluate the state of gear teeth

Method used

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  • Planetary gear train gear tooth state evaluation method, device thereof, equipment and medium
  • Planetary gear train gear tooth state evaluation method, device thereof, equipment and medium
  • Planetary gear train gear tooth state evaluation method, device thereof, equipment and medium

Examples

Experimental program
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Effect test

Embodiment 1

[0043] refer to figure 1 , a planetary gear tooth state evaluation method based on RMS time-domain synchronous averaging technology, including the following steps:

[0044]Step 1. According to the parameters of each gear in the planetary gear train, establish the finite element simulation model of the internal and external meshing pairs, and perform modal analysis to solve the natural frequency of the internal and external meshing pairs; the parameters of each gear in the planetary gear train include the number of teeth, the module and the width;

[0045] The finite element simulation model of the internal and external meshing pair needs to set the spring element to simulate the meshing relationship of the gear teeth, and solve the natural frequency of the meshing pair as a whole. The stiffness of the spring element is set to the average value of the time-varying meshing stiffness of the meshing pair.

[0046] Step 2. Collect the vibration signal of the planetary gear train, ...

Embodiment 2

[0070] The tooth state evaluation device of the planetary gear train provided by the present invention, such as Figure 8 As shown, it includes acquisition module, processing module and display module.

[0071] Among them, the acquisition module is used to collect the vibration signal of the planetary gear train, and transmit the collected vibration signal of the planetary gear train to the processing module; the processing module is used to evaluate the tooth state of the planetary gear train according to the vibration signal of the planetary gear train, and transmit to a display module; a display module for displaying status evaluation results.

Embodiment 3

[0073] A kind of computer equipment provided by the present invention, such as Figure 9 As shown, it includes an electrically connected memory and a processor, wherein the memory stores a calculation program that can run on the processor, and when the processor executes the calculation program, the steps of the above-mentioned state evaluation method are realized. For example figure 1 steps shown. Alternatively, when the processor executes the computer program, the functions of the modules / units in the above device embodiments are implemented.

[0074] The computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to implement the present invention.

[0075] The state assessment device / terminal device may be computing devices such as desktop computers, notebooks, palmtop computers, and cloud servers. The state evaluation device / terminal device may include, but not limited to, a processor and a memory.

[00...

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Abstract

The invention discloses a planetary gear train gear tooth state evaluation method and a device thereof, equipment and a medium. Harmonic signals are removed through Vold-Kalman filtering, Protrugram analysis is performed on residual signals, in combination with a modal analysis result, a frequency band where impact vibration is located is recognized, internal and external meshing impact is distinguished, a zero-phase-shift band-pass filter is constructed to extract internal and external meshing impact vibration signals, RMS time domain synchronous average analysis is carried out, and the state of each gear tooth of the planetary gear train is visually evaluated. Compared with a traditional fault diagnosis method based on fault characteristic frequency identification, the fault diagnosis method fully utilizes frequency information, phase information and amplitude information contained in the impact vibration signals, can realize positioning of fault gears, distinguishing of fault types and accurate evaluation of fault damage severity, is visual in result and high in visualization, and facilitates reference of field maintenance personnel.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis of planetary gear boxes, and in particular relates to a method, device, equipment and medium for evaluating the tooth state of a planetary gear train based on RMS time-domain synchronous averaging technology. Background technique [0002] The planetary gear train has the advantages of light weight, small size, high load capacity, compact structure, and high transmission efficiency, and is widely used in large-scale mechanical equipment such as aerospace, metallurgical mining, and wind power generators. Due to the harsh working environment, the planetary gear train is prone to local failures. When a gear tooth has a partial fault, due to the reduction of the local bearing capacity, the fault will further develop and induce the failure of other gear teeth; when the fault develops seriously, it will cause the equipment to stop and cause economic losses. [0003] Analyzing vibration signal ch...

Claims

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Application Information

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IPC IPC(8): G01M13/021G01M13/028G06F30/23
CPCG01M13/021G01M13/028G06F30/23Y02T90/00
Inventor 侯成刚杨元梁景源
Owner XI AN JIAOTONG UNIV
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