Dynamics performance parameter optimizing method of high-speed train

A technology for high-speed trains and optimization methods, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems that have not yet been discovered and have high complexity, and achieve the effect of improving design and analysis capabilities and improving operational safety.

Active Publication Date: 2015-07-08
成都天佑创软科技有限公司
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Problems solved by technology

[0006] At present, no relevant literature has been found to solve the multi-objective optimization problem of dynamic performance parameters

Method used

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  • Dynamics performance parameter optimizing method of high-speed train
  • Dynamics performance parameter optimizing method of high-speed train
  • Dynamics performance parameter optimizing method of high-speed train

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with accompanying drawing:

[0035] 1. Construct a design space sample set for dynamic performance analysis of high-speed trains

[0036] According to the topological structure of the high-speed train and the multi-rigid body dynamic analysis model, based on the dynamics simulation software, the line conditions, calculation conditions, excitation conditions and tread shape are selected, and the simulation model is established with the original data of the high-speed train in SIMPACK, such as figure 2 shown.

[0037] According to the experience, the important input variables and their value ranges to be designed are extracted as the input of the design space. The seven indicators of derailment coefficient, wheel load reduction rate, overturning coefficient, critical speed, lateral force of wheel axle, lateral stability and vertical stability which affect the three aspects of operation safety, curve pa...

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Abstract

The invention provides a dynamics performance parameter optimizing method of a high-speed train, relates to the field of parameter design optimizing based on the dynamics simulation analysis of the high-speed train, and aims at effectively replacing a dynamics simulation model of the high-speed train by a comprehensive target neural network agent model and combining the design analysis and the multi-target optimization algorithm of the high-speed train in the multi-disciplinary field to analyze and optimize the dynamics simulation approximation model of the high-speed train. The method specifically comprises the steps of building a multi-rigidity dynamics simulation model for the high-speed train; determining related important input/ output design spaces; selecting sampling strategy to obtain a design space sample set suitable for the dynamics performance analysis of the high-speed train; improving the generalization accuracy of the comprehensive target neural network by the bayesian regularization method; adjusting the number of nodes in a hidden layer to build the comprehensive target neural network agent network model of which the error is controlled to be within a certain of range; performing multi-target optimization through the intelligent differential evolution algorithm by using the improved comprehensive target neural network agent network model to obtain the optimized high-speed train design parameters. The method is mainly applied to the dynamics analysis and design optimization of the high-speed train.

Description

technical field [0001] The invention relates to the technical field of simulation analysis of high-speed train operation performance-related systems and high-speed train parameter design optimization, in particular to parameter design optimization based on high-speed train dynamics simulation analysis. Background technique [0002] From the perspective of dynamics, the high-speed train system is a nonlinear complex space coupling system, which involves track (bridge) system, high-speed train rolling stock system and pantograph-catenary system. In order to solve the design optimization problem of high-speed trains, it is necessary to conduct complex and in-depth research on structural dynamics, vehicle system dynamics, coupling dynamics, aerodynamics, and nonlinear theories. [0003] Structural dynamics is the use of related methods to study the unique problems in the structure of high-speed trains, including car body structural dynamics and track bridge structural dynamics, ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张剑张海柱姜杰邹益胜黎荣丁国富周晓欣马晓杰黄文培
Owner 成都天佑创软科技有限公司
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