A micro-fault detection method for high-speed train air brake system

A fault detection, high-speed train technology, applied in braking safety systems, brakes, brake components, etc., can solve problems such as poor fault detection results of multiple sensors, and achieve easy computer implementation, simple algorithms, and timely and accurate fault detection. Effect

Active Publication Date: 2021-09-24
SHANDONG UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

However, there are still deficiencies in this type of strategy: for example, the variance between variables is invalid for the faults of upstream components in the air brake system, such as EP valves and relay valves in closed-loop control; Ineffective detection of high-degree leakage and small-amplitude multiple sensor faults

Method used

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  • A micro-fault detection method for high-speed train air brake system
  • A micro-fault detection method for high-speed train air brake system
  • A micro-fault detection method for high-speed train air brake system

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0042]The purpose of the present invention is to implement on-line monitoring of the high-speed train air brake system, and timely detect possible abnormalities in the valve parts or control loops, brake cylinder parts and gas transmission pipelines in the brake control unit. Considering that the braking action intends to evenly distribute the braking force to multiple brake cylinders installed on each train of a high-speed train, under normal circumstances, the pressure of multiple brake cylinders in each train should tend to be consistent. Based on such a consideration, the present invention adopts the measure of variance to measure the degree of dispersion among multiple brake cylinder pressure measurement values ​​in the application, release and traction phases of the braking process, so as to detect abnormal conditions in time. In addition,...

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Abstract

The invention discloses a micro-fault detection method for an air brake system of a high-speed train, which belongs to the field of fault diagnosis. The method comprises: collecting multiple groups of brake cylinder pressure measurement data including the whole braking process under the normal operation condition of the high-speed train Constitute multiple training data sets; calculate the fault detection statistics of each sample contained in each training data set; determine the control limit of the mixed fault detection statistics based on all the fault detection statistics information contained in all training data sets; Under the real-time operating conditions of high-speed trains, the collected brake cylinder pressure data at the current moment is used as a test sample to determine whether there is a fault. The invention utilizes historical data modeling and online data detection, has no requirements for data distribution, and has a simple algorithm, which is easy for computer implementation and practical application, is applicable to different braking levels and braking stages, and has good detection for several types of micro-faults Effect.

Description

technical field [0001] The invention belongs to the field of fault diagnosis, and in particular relates to a small fault detection method for an air brake system of a high-speed train. Background technique [0002] In recent years, the high-speed rail technology in many countries around the world has achieved rapid development, and the operating mileage of high-speed rail has continued to increase. In particular, my country's high-speed rail has achieved world-renowned achievements. As of the end of 2018, my country's high-speed rail operating mileage exceeded 29,000 kilometers, accounting for two-thirds of the world's total operating mileage of high-speed rail. As the core of the high-speed rail system, high-speed trains are closely related to passengers and staff, and their safe operation is of paramount importance. The high-speed train information control system can be divided into several subsystems, among which the braking system is mainly used to ensure that the train...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T17/22
CPCB60T17/228
Inventor 周东华纪洪泉钟麦英王友清王建东
Owner SHANDONG UNIV OF SCI & TECH
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