Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dynamics simulation optimization method and device of heavy haul train

A dynamic simulation and optimization method technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of complex modeling process, difficult data processing, difficult real-time and data synchronization, etc. The effect of reducing the number of calculations, realizing real-time and data synchronization, and reducing the difficulty of data processing

Active Publication Date: 2016-09-28
ZHUZHOU ELECTRIC LOCOMOTIVE CO
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The dynamics problem of long trains is a relatively complex system dynamics problem. The existing domestic vehicle dynamics simulation systems, such as SIMPACK and other simulation systems, can establish accurate vehicle dynamics models, but the modeling process is complicated and data processing is difficult. Large, the performance requirements of the computer running the simulation system are very high, which makes it difficult to realize the real-time and data synchronization of the simulation calculation in the existing technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dynamics simulation optimization method and device of heavy haul train
  • Dynamics simulation optimization method and device of heavy haul train
  • Dynamics simulation optimization method and device of heavy haul train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] see figure 1 , figure 1It is a flow chart of a long train dynamics simulation optimization method disclosed in Embodiment 1 of the present invention. The method is applied to a long train dynamics simulation system, and the method includes the following steps:

[0052] Step S11: Obtain the number of calculations required within the time of the simulation step in the simulation; the number of calculations required within the time of the simulation step is the number of traction calculations used for each simulation, and the power used for each simulation. The product of braking calculation times, running resistance calculation times for each simulation, air braking force calculation times for each simulation, coupler force calculation times for each simulation and additional resistance calculation times for each simulation;

[0053] Specifically, the long train dynamics simulation system inputs the running resistance parameters of the long train, the traction-braking cu...

Embodiment 2

[0064] Based on the above-mentioned a kind of long train dynamics simulation optimization method disclosed in Embodiment 1 of the present invention, such as figure 1 The number of calculations of the optimized air braking force in the number of calculations of the optimized air braking force S13 is shown, and its specific execution process is as follows: figure 2 , mainly including the following steps:

[0065] Step S21: increase the value of the simulation step size to reduce the calculation times of the air braking force used for each simulation;

[0066] Specifically, the initial value of the simulation step size can be set to 0.002 seconds, 1s=1000ms, that is to say, a calculation is performed every 5ms, and the value of the simulation step is increased, that is, the calculation is performed within 1s. The time can reduce the difficulty of data processing when the computer runs the simulation system.

[0067] Step S22: Obtain the current speed of the long train on the b...

Embodiment 3

[0091] see image 3 , image 3 It is a flow chart of a long train dynamics simulation optimization method disclosed in Embodiment 3 of the present invention, and the method includes:

[0092] Step S31: Obtain the number of calculations required within the time of the simulation step in the simulation; the number of calculations required within the time of the simulation step is the number of traction calculations used for each simulation, and the power used for each simulation. The product of braking calculation times, running resistance calculation times for each simulation, air braking force calculation times for each simulation, coupler force calculation times for each simulation and additional resistance calculation times for each simulation;

[0093]Specifically, the long train dynamics simulation system inputs the running resistance parameters of the long train, the traction-braking curve parameters of the long train, the coupler slowdown model parameters of the long tr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a dynamics simulation optimization method and device of a heavy haul train, and is applied to a dynamics simulation system of the heavy haul train. The method comprises the following steps: obtaining calculation frequencies required within simulation step size time in simulation; judging whether the calculation frequencies required within the simulation step size time are greater than a preset operation frequency upper limit for operating the computer of the simulation system or not; and if the calculation frequencies required within the simulation step size time are greater than the preset operation frequency upper limit for operating the computer of the simulation system, optimizing the calculation frequencies of air braking force to cause an optimization result to meet a requirement that the calculation frequencies required within the simulation step size time is smaller than the operation frequency upper limit of the computer. On the basis of the method, the calculation frequencies of air braking force are optimized to lower data processing difficulty and realize the instantaneity and the data synchronization of the dynamics simulation calculation of the heavy haul train.

Description

technical field [0001] The invention relates to the field of rail vehicle dynamics simulation, in particular to a dynamics simulation optimization method and device for long and large trains. Background technique [0002] With the popularity of rail vehicles such as subways, light rails, trams and maglev trains, the safety of rail vehicles has been paid more and more attention by people. Real-time simulation of long train dynamics is the most effective method for safety monitoring of rail vehicles. [0003] The dynamics problem of long trains is a relatively complex system dynamics problem. The existing domestic vehicle dynamics simulation systems, such as SIMPACK and other simulation systems, can establish accurate vehicle dynamics models, but the modeling process is complicated and data processing is difficult. Large, the performance requirements of the computer running the simulation system are very high, which makes it difficult to realize the real-time and data synchro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 罗显光毛业军汤诚陈建林杜求茂王先锋
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com