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Fault prediction method and system, electronic equipment and computer program product

A fault prediction and fault technology, applied in geometric CAD, special data processing applications, etc., can solve problems such as increasing the workload of the staff, inability to adapt to uniqueness, etc., and achieve high fault detection performance, high accuracy, and low false alarm rate. Effect

Active Publication Date: 2022-06-17
重庆英科铸数网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only increases the workload of the staff, but also the failure prediction model after debugging cannot adapt to the uniqueness of each gear transmission

Method used

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  • Fault prediction method and system, electronic equipment and computer program product
  • Fault prediction method and system, electronic equipment and computer program product
  • Fault prediction method and system, electronic equipment and computer program product

Examples

Experimental program
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Effect test

Embodiment 1

[0080] see figure 1 , is a schematic flowchart of a fault prediction method for a gear transmission according to an exemplary embodiment of the present invention. Specifically, the method includes the steps:

[0081] S101, build a fault prediction model based on the acquired training set.

[0082] In some embodiments, in order to ensure a sufficient amount of data, the first historical vibration data of a plurality of first gear transmissions are acquired in advance as a training set to construct a fault prediction model, and the training set has been marked in advance, such as: marking For the historical vibration data representing the normality of the first gear transmission, ie, normal data / normal samples, and to mark the historical vibration data representing the failure of the first gear transmission, ie, fault data / fault samples. For example, in order to ensure a sufficient amount of data, the historical vibration data of the corresponding gear transmission device (ie t...

Embodiment 2

[0116] The fault prediction method of the present invention is described in detail by taking the gearbox of the wind turbine as an example.

[0117] In some embodiments, the fault prediction method of the embodiment of the present invention includes offline training and online testing. For details, see Figure 5a , the marked historical vibration data includes a large amount of source domain (SD) data (for example, obtained by experts marking the first historical vibration data of a plurality of first transmission gear devices in advance) and a small amount of target domain data (that is, based on the target obtained by automatically marking the second historical vibration data of the second gear transmission), and extract the source domain features (that is, the fourth harmonic frequency of the meshing frequency and its sidebands of the first historical vibration data) and the target domain features (that is, the first historical vibration data). The meshing frequency of the ...

Embodiment 3

[0154] see Figure 4 , the present invention also provides a fault prediction system of the gear transmission, specifically, it includes:

[0155] Database 401 for storing a training set and second historical vibration data of a second transmission gear device; the training set includes: marked first historical vibration data, the first historical vibration data from a plurality of first gear transmission devices ;

[0156] A model building module 402, configured to build a fault prediction model based on the obtained training set;

[0157] a model preheating module 403, configured to preheat the fault prediction model constructed by the model construction module based on the pre-built preheat set, so that the fault prediction model is adapted to the individual characteristics of the second gear transmission;

[0158] The fault prediction module 404 is configured to perform fault prediction based on the preheated fault prediction model and the collected real-time vibration d...

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Abstract

The invention discloses a fault prediction method and system for a gear transmission device, and the method comprises the steps: carrying out the preheating of a pre-constructed fault prediction model through a preheating set which is constructed based on second historical vibration data and first historical vibration data, so as to enable the fault prediction model to adapt to the individual features of a second gear transmission device, and then deploying the preheated fault prediction model to the second gear transmission device for fault prediction, and because the fault prediction model is adapted to the individual characteristics of the gear transmission device, the fault prediction model can predict the fault of the second gear transmission device. Compared with the mode that the built fault prediction model is directly deployed in the transmission system and then is debugged one by one on site by an engineer, the method has the advantages that the workload of the engineer is reduced, large-scale model deployment can be quickly carried out on the basis of meeting the basic prediction precision of the current industry, and the efficiency is improved. Therefore, the balance between the speed and the precision is achieved.

Description

technical field [0001] The invention relates to the field of fault prediction, in particular to a fault prediction method and system, electronic equipment and computer program product of a gear transmission. Background technique [0002] As an important part of mechanical equipment (for example, the transmission system of wind turbines, or the transmission system of rail trains, etc.), gear transmissions are widely used in the mechanical field, such as wind turbines, rail vehicles, helicopters and other mechanical transmission systems Application, whether its running status is normal or not directly determines the running status of the entire mechanical equipment. However, due to long-term operation in complex and harsh environments such as high speed, heavy load or high temperature, the gear transmission is prone to cracks or pitting failures. Once the gear transmission fails during operation, it will not only bring certain production benefits. loss, but also damage to per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17
CPCG06F30/17Y02E10/72
Inventor 曹阔傅筱韩俊毅袁景昊
Owner 重庆英科铸数网络科技有限公司