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Evaluation method and system for vibration comfort caused by transient severe vibration of train body

A comfort, car body technology, applied in the field of high-speed train operation evaluation, can solve problems such as lack of vibration comfort

Active Publication Date: 2021-06-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and system for evaluating the vibration comfort caused by the transient severe vibration of the train body, which is used to solve the problem of vibration comfort caused by the transient severe vibration of the train body when the train passes through a complex section in a windy environment. research technical issues

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  • Evaluation method and system for vibration comfort caused by transient severe vibration of train body
  • Evaluation method and system for vibration comfort caused by transient severe vibration of train body
  • Evaluation method and system for vibration comfort caused by transient severe vibration of train body

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Embodiment 1

[0050] In order to effectively evaluate the vehicle body vibration comfort when the train is running through a complex terrain section in a strong wind environment, the following aspects should be considered: (1) the main vibration characteristics of the vehicle body should be considered in the evaluation index; (2) it can be clearly quantified The vibration characteristics of the vehicle body can reflect the transient vibration characteristics of the vehicle body; (3) the weighted ratio of different forms of vibration of the vehicle body should be reasonable; (4) the parameters can be directly measured in engineering applications.

[0051] Vibration comfort is not only related to vibration magnitude, but also affected by changes in vibration frequency and direction. Changes in low-frequency vibrations have a greater impact on vibration discomfort than high-frequency vibrations. When vibrating, the vibration displacement can effectively represent the vibration magnitude. Accor...

Embodiment 2

[0073] This embodiment provides a computer system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps in any of the foregoing embodiments are implemented.

[0074] In summary, the present invention aims at the vibration characteristics of low-frequency, low-acceleration, and large-displacement car body vibration when a train passes through a complex terrain environment in a strong wind environment. The evaluation method can not only more accurately reflect the vibration comfort during train operation, but also more accurately reflect the actual feelings of train drivers and passengers.

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Abstract

The invention discloses a method and system for evaluating the vibration comfort of a train body caused by transient severe vibration. Perform frequency weighted filtering on the roll angle and the lateral displacement of the center of gravity position; truncate the weighted filtered vehicle body roll angle and the weighted filtered lateral displacement of the center of gravity position by cycle, and solve the vehicle body roll angle and lateral displacement of the center of gravity position by interval The absolute value and peak-to-peak value of the average value; according to the absolute value and peak-to-peak value of the average value of the roll angle of the car body and the lateral displacement of the center of gravity position, the evaluation index of the vibration comfort of the train is calculated. The invention can more accurately reflect the vibration comfort caused by the transient severe vibration of the train body during the running process of the train, and can also more accurately reflect the actual feelings of the train drivers and passengers.

Description

technical field [0001] The invention relates to the field of high-speed train operation evaluation, in particular to a method and system for evaluating vibration comfort caused by transient severe vibration of a train body when a train passes through a complex terrain section in a strong wind environment. Background technique [0002] With the continuous development of high-speed rail technology, more and more attention has been paid to the comfort of train riding. Train ride comfort is related to many factors, such as vibration, noise, temperature, occupants, and vehicle design, etc. It is quite difficult to evaluate ride comfort by considering all the above factors at the same time. Therefore, in the field of railways, ride comfort generally refers to the passenger's acceptance of the vibration of the car body system during the operation of the train. [0003] At present, there are two main categories of comfort evaluation, one is the overall physiological feeling of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/08
CPCG01M17/08
Inventor 田红旗刘东润钟睦鲁寨军周伟王田天
Owner CENT SOUTH UNIV
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