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Train and line system dynamic performance comprehensive simulating method

A simulation method, a technology of system dynamics, applied in the direction of computer for various vehicles, simulation process of specific applications, etc., can solve the problems of unintuitiveness, poor system integration and comprehensiveness, and low degree of visualization.

Inactive Publication Date: 2007-08-22
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing locomotive vehicle-track coupling dynamics simulation, most of them focus on the numerical simulation of the model, mostly in the form of modules, and the integration and comprehensiveness of the system are poor
The solution module is equivalent to a system solver. The module itself does not have functions related to comprehensive processing and system solution, and is highly dependent on manual and third-party software. This module can only be used effectively by professionals and is not universal. sex
Moreover, the existing simulation method does not display through the three-dimensional scene, which has a low degree of visualization and is not intuitive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The first embodiment of the present invention includes the following steps:

[0023] a. Obtain the selected train and line data from the three-dimensional train and line model library, use the vehicle-track coupling system dynamics calculation method, and at the set speed: calculate the components of the train and the components of the line affected by train vibration Time-vibration displacement data, time-vibration velocity data and time-vibration acceleration data are stored in the dynamic database;

[0024] b. Initialize the 3D simulation scene, configure the light source in it, and obtain the train and line component models from the 3D train or line model library;

[0025] c. Obtain the relative structural data between the selected train components and the line components from the three-dimensional train and line model library, and then calculate the distance traveled by the train components on the line according to the set speed and time interval; and according to ...

Embodiment 2

[0030] This example is basically the same as the steps of implementation 1, the only difference is that in step a, the selected train and line data are obtained from the three-dimensional train and line model library, and the vehicle-track coupling system dynamics calculation method is used, according to the setting The velocity is calculated: the vibration displacement data, vibration velocity data and vibration acceleration data of each component of the train and each component of the line affected by the train vibration at the current moment, and stored in the dynamic database.

[0031] Compared with Embodiment 1, this example does not calculate and store each moment, but only calculates the relevant vibration data of the train and each component of the line at the current moment, and displays it while calculating. ) have higher performance requirements.

[0032] When displaying in the present invention, the display used can be a projector, and the dynamic running process o...

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Abstract

This invention discloses a combined simulation method and a device for dynamic performance of trains and their circuit system, which utilizes a visual technology of computers to simulate various dynamic performances of stability, smoothness and curves of trains running on the circuit and simulates the operation state of any train at any circuit in carriages, trucks and various shaft locomotives and displays the moving state in three-dimension scene.

Description

technical field [0001] The invention relates to a comprehensive simulation method for the dynamic performance of a train and line system. Background technique [0002] The running of a rolling stock on a track is a process of dynamic interaction between a moving mass system and an infinitely long continuous support structure. Due to the unevenness of the line, the geometric defects of the wheel and the rail surface, etc., there is an interaction force between the wheel and the rail. This force is transmitted upward to the rolling stock and downward to the track structure, causing respective vibrations, and these vibrations are coupled with each other to form a coupling system between the rolling stock and the track. It is this complex relationship that makes the dynamic operation system of the train on the line have the characteristics of multiple degrees of freedom and strong nonlinearity, which makes the system very complicated. [0003] The dynamic coupled system of tra...

Claims

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Application Information

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IPC IPC(8): G06G7/70
Inventor 翟婉明杨吉忠赵春发王开云蔡成标
Owner SOUTHWEST JIAOTONG UNIV
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