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High-speed train suspension system fault diagnosis method based on data-driven ToMFIR

A suspension system, high-speed train technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problems of sensor deviation drift, performance degradation, loss of small-scale actuation efficiency of actuators, etc. achieve high sensitivity

Pending Publication Date: 2022-03-01
JIANGSU UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

With the increase of the running time of the train, some components in the suspension system, such as coil springs, shock absorbers, air springs, active / semi-active actuators, and sensors, will have a certain degree of performance degradation, which will induce such as coil springs. Minor faults such as minor cracks, slight oil / fluid leakage of shock absorbers, slight air leakage of air springs, small loss of actuation performance of actuators, sensor deviation drift, etc., bring potential danger to train driving safety

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  • High-speed train suspension system fault diagnosis method based on data-driven ToMFIR
  • High-speed train suspension system fault diagnosis method based on data-driven ToMFIR
  • High-speed train suspension system fault diagnosis method based on data-driven ToMFIR

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Embodiment Construction

[0099] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0100] figure 1 It is a structural schematic diagram of a high-speed train suspension system fault diagnosis system according to an embodiment of the present invention. like figure 1 As shown, the fault diagnosis system includes: a sensor for obtaining the vertical displacement and pitch angle of the center of gravity of the train and the vertical displacement of the center of gravity of the bogie frame; an acquisition system for collecting and processing the measurement data of the sensor and sending it to the fault diagnosis host ; Fault diagnosis host computer judges whether the suspension system of the high-speed train is faulty and estimates the magnitude of the fault through the collected information. The installation positions of sensors and gyroscopes in each car are as follows: figure 2 shown.

[0101] like image 3 As shown, the micro-fault di...

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Abstract

The invention discloses a high-speed train suspension system fault diagnosis method based on data-driven ToMFIR, and the method comprises the steps: carrying out the data modeling of an actual model and a nominal model of a high-speed train suspension system, and obtaining an input / output data model of the actual model and an input / output data model of the nominal model, which are hidden in the input / output relation of the suspension system; designing a fault information full-metric residual error based on data driving by utilizing the obtained input and output data matrix of the actual model and the input and output data matrix of the nominal model; constructing an evaluation function by adopting a fault information full-metric residual error, and giving an alarm when a detection index reaches an alarm threshold value in combination with the fault detection alarm threshold value; and carrying out amplitude estimation on the tiny fault of the suspension system sensor by using the fault information full-measurement residual error based on data driving. The method has high sensitivity to tiny faults of the high-speed train suspension system, and can detect and accurately estimate the dynamic characteristics of the faults in real time.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis of high-speed train suspension systems, and relates to a data-driven ToMFIR (Total Measurable Fault Information Residual) fault diagnosis method for high-speed train suspension systems. Background technique [0002] Since China opened the CRH (China Railway High-speed) EMU train with a speed of more than 200 kilometers per hour on the main trunk line in 2008, after more than 10 years of development, China has built the world's largest and fastest operating high-speed railway network. [0003] The high-speed train suspension system supports the car body and the bogie, and at the same time isolates the wheel-rail force caused by track irregularities to ensure the stability and safety of the train during high-speed operation, so it has high reliability requirements. The high-speed train suspension system is divided into active suspension and semi-active suspension, and adopts a closed-loop co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0254
Inventor 吴云凯苏宇周扬朱志宇
Owner JIANGSU UNIV OF SCI & TECH
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