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A fault prediction method, system and medium for subway braking system

A brake system and fault prediction technology, applied in the field of artificial intelligence, can solve problems such as brake system faults and subway brake system faults

Active Publication Date: 2022-07-01
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method, system and medium for predicting the failure of the subway braking system against the problem of the above-mentioned electromagnetic valve aging that causes the failure of the braking system. The method can predict the remaining service life of the electromagnetic valve, thereby solving the problem of Faults of Metro Braking System Caused by Solenoid Valve Aging

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  • A fault prediction method, system and medium for subway braking system
  • A fault prediction method, system and medium for subway braking system
  • A fault prediction method, system and medium for subway braking system

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Embodiment Construction

[0070] The present invention will be further described below with reference to the accompanying drawings and examples.

[0071] In one aspect, a fault prediction method for a subway braking system includes the following steps:

[0072] Step 1: Obtain the solenoid valve pressure data during the historical braking process of the subway, and construct a sample data set;

[0073] Step 2: Construct the actual pressure and target pressure change curve of the subway brake solenoid valve;

[0074] According to the followability of the actual pressure change curve of the subway solenoid valve and the target pressure change curve, the change curve of the actual pressure and the target pressure of the subway brake solenoid valve is constructed;

[0075] During the braking process of the subway braking system, the electronic control unit of the braking system directly controls the solenoid valve to charge and exhaust the air from the brake cylinder, so as to realize the three stages of b...

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Abstract

The invention discloses a fault prediction method, system and medium of a subway braking system. The method adopts the following steps: firstly, the collected historical maintenance information and operation data of the subway braking system are used as original data; The curve changes between the actual pressures, extract the features that can judge the aging degree of the solenoid valve, and construct a certain number of decision trees with the extracted features and the training data set generated after random sampling, so as to construct a random forest prediction model; , based on the classification results of each decision tree, the final result is obtained by the method of majority voting; this method extracts the characteristics that can judge the aging degree of the solenoid valve, digs out the remaining service life of the solenoid valve, and judges the solenoid valve's remaining service life. Whether the remaining service life meets the PH value is used as the standard to evaluate the health status of the braking system and propose the maintenance requirements for the solenoid valve of the braking system.

Description

technical field [0001] The invention relates to the field of artificial intelligence, in particular to a fault prediction method, system and medium of a subway braking system. Background technique [0002] As a transportation mode with large passenger capacity, safety, speed, comfort and energy saving, the subway has the characteristics of large carrying capacity and concentrated passenger flow, which determines the extreme importance of the safety and reliability of urban rail transit equipment. The braking system of rail transit vehicles is an important system related to the safety of train operation, and its own safety and reliability must be ensured. The development of the failure of the braking system is gradual. The failure of the solenoid valve, a key component of the braking system, is mainly a loss-type failure, and there is a process of gradually deteriorating performance. With the gradual aging of the solenoid valve body, the performance of the braking system is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0248G05B23/024G05B23/0275G05B23/0283
Inventor 高凯罗彬仁李勋豪贾文昊黄浩陈彬黄毅杜荣华
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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