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Method and device for establishing wheel/rail force load identification characteristic data model

A feature data and model building technology, applied in special data processing applications, neural learning methods, electrical digital data processing, etc., can solve problems such as large amount of calculation, complex working conditions, and many degrees of freedom, and achieve broad application prospects and guarantee Safe operation, overcome the effect of installation

Inactive Publication Date: 2018-10-16
CHINA ACADEMY OF RAILWAY SCI CORP LTD +3
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Problems solved by technology

However, there is a strong nonlinear relationship between the dynamic response of the vehicle and the wheel-rail force in the wheel-rail interaction system, and there are many degrees of freedom and complex working conditions, so the calculation amount after the establishment of the mechanism model is relatively large
The calculation speed of existing commercial software such as multi-body dynamics software MSC, ADAMS Rail module and ANSYS cannot meet the requirements of engineering applications

Method used

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  • Method and device for establishing wheel/rail force load identification characteristic data model
  • Method and device for establishing wheel/rail force load identification characteristic data model
  • Method and device for establishing wheel/rail force load identification characteristic data model

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Embodiment Construction

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] The working principle of this technical solution is: Although a lot of research work has been carried out in the field of wheel-rail force identification at home and abroad, how to use the vehicle dynamic response acceleration to establish a data model to identify wheel-rail force has not been seen in relevant literature reports and patent descriptions. If you directly use the vehicle dynamic response acceleration data to establish a data model to identi...

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Abstract

The invention relates to a method and a device for establishing a wheel / rail force load identification characteristic data model, wherein, the method comprises the following steps of: extracting time-frequency characteristics of track-vehicle system detection data by using an adaptive signal decomposition algorithm based on a variable parameter domain and a short-time Gaussian chirplet; fusing thetime-frequency characteristics of track-vehicle system detection data by using a multi-node collaborative conjugate sparse principal component analysis algorithm; and establishing a wheel / rail forceload identification characteristic data model by taking multi-node characteristic fusion data as a sample data set and using an L1 / 2-SparsePCA-ELM neural network machine learning algorithm. The technical scheme uses the data modeling method to identify the wheel / rail force in real time, then evaluates the safety status of track-vehicle system interaction, and is an important supplement to the existing track quality evaluation standard based on track geometry state detection, which is conducive to the comprehensive analysis of the track-vehicle system status and guidance of high-speed railway track maintenance work.

Description

technical field [0001] The invention relates to the technical field of locomotive vehicle detection, in particular to a method and device for establishing a wheel-rail force load identification feature data model. Background technique [0002] With the rapid development of my country's high-speed railway, due to the increase of train speed and operating mileage, in order to ensure the safety of train operation, it is necessary to identify and monitor the key factor of the wheel-rail system - the wheel-rail interaction force. At present, although the force measuring wheel set can detect the wheel-rail force in real time, its cost is high and maintenance is inconvenient, so it can only be installed on a few comprehensive detection trains. Comprehensive detection The train uses advanced detection equipment such as the dynamic response acceleration system of the vehicle and the force-measuring wheel set to dynamically detect the state of the vehicle and the wheel-rail system, an...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06N3/08
CPCG06N3/08G06F30/20
Inventor 王卫东郭剑峰靖稳峰刘金朝徐贵红孙善超梁志明
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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