Fault diagnosis method, device and storage medium of a balanced air cylinder control module

A technology for balancing air cylinders and fault diagnosis. It is applied in the directions of brakes, brake components, transportation and packaging. It can solve the problems of high computing cost and low diagnostic performance, and achieve the effect of reducing the computing burden and improving the level of fault diagnosis.

Active Publication Date: 2021-05-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a fault diagnosis method, device and storage medium of a balanced air cylinder control module to solve the problems of high calculation cost and low diagnostic performance of the data-driven balanced air cylinder control module fault diagnosis method in the prior art

Method used

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  • Fault diagnosis method, device and storage medium of a balanced air cylinder control module
  • Fault diagnosis method, device and storage medium of a balanced air cylinder control module
  • Fault diagnosis method, device and storage medium of a balanced air cylinder control module

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Embodiment 1

[0066] Such as figure 1 with figure 2 As shown, the present embodiment provides a method for diagnosing the fault of the balance air cylinder control module, including:

[0067] S1: Real-time acquisition of the pressure data of the equalizing air cylinder, the driving current data of the air filling valve and the air exhaust valve in one charge and exhaust period of the equalizing air cylinder;

[0068] S2: Using the sliding window strategy, divide the obtained pressure data of the balanced air cylinder, the driving current data of the air filling valve and the air exhaust valve into n subsequences along the time dimension, and n is a preset value. In this embodiment, n is 20 ;

[0069] S3: Extract the time-domain feature, frequency-domain feature and time-frequency domain feature of each subsequence to form a fault diagnosis feature vector;

[0070] S4: Based on the fault diagnosis feature vector, use the pre-trained fault diagnosis model of the balance air cylinder contr...

Embodiment 2

[0101]In order to facilitate the understanding of the solution, an existing equalization air cylinder control module is firstly provided, such as Image 6 , Figure 7 As shown, it includes: air source, brake control unit BCU, air filling valve, air exhaust valve, equalizing air cylinder and pressure sensor; the connection between the brake control unit BCU and the air filling valve, air exhaust valve and pressure sensor is Circuit connection; the connection between the equalizing air cylinder and the air filling valve, air exhaust valve, and pressure sensor is an air circuit connection; the connection between the air source and the air filling valve is an air circuit connection; The cylinder provides a stable source of wind power; the brake control unit BCU includes a PWM board, an input board, an output board, a control board, an analog board and a power board, and adopts a PID control algorithm according to the difference between the target pressure of the balanced air cylin...

Embodiment 3

[0128] This embodiment provides a computer-readable storage medium, the storage medium includes stored program instructions, and the program instructions are suitable for being loaded by a processor and executing the method for diagnosing the fault of the balance air cylinder control module as described in Embodiment 1 .

[0129] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

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Abstract

The invention discloses a fault diagnosis method, device and storage medium of a balance air cylinder control module, wherein the method includes: obtaining in real time the pressure data of the balance air cylinder in one charge and exhaust cycle of the balance air cylinder, the values ​​of the air filling valve and the air discharge valve Driving current data; using the sliding window strategy, the obtained pressure data of the balanced air cylinder, the driving current data of the air filling valve and the air exhaust valve are divided into n sub-sequences along the time dimension; the time-domain features and frequency-domain features of each sub-sequence are extracted features and time-frequency domain features to form a fault diagnosis feature vector; based on the fault diagnosis feature vector, use the pre-trained balance cylinder control module fault diagnosis model for fault diagnosis. In view of the characteristics of high frequency, nonlinearity and time dependence of data, through the combination of sliding window strategy, three-domain feature extraction and diagnosis model, the fault diagnosis of the balance air cylinder control module can be effectively and accurately diagnosed, and the existing The fault diagnosis level of the balanced air cylinder control module.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of a train braking system, in particular to a fault diagnosis method, device and storage medium of an equalizing air cylinder control module. Background technique [0002] In the train braking system, the relay valve responds to the pressure change of the balance air cylinder to control the pressure change of the train pipe, so as to realize the braking, pressure maintenance and relief of the train. As an important device of the braking system, the health status of the balance air cylinder control module has an important impact on the braking performance of the train. However, since the equalizing cylinder control module is composed of a large number of highly interactive components and operates in multiple operating modes, it is difficult to perform fault diagnosis on the equalizing cylinder control module using traditional model-based fault diagnosis methods. The data-driven method trie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T17/22G01M17/08
CPCB60T17/228G01M17/08
Inventor 刘伟荣郑彩凤杨迎泽彭军黄志武蒋富张晓勇李恒程亦君陈彬
Owner CENT SOUTH UNIV
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