摘要
在建立车辆动力学仿真分析模型的基础上,确定设计参数的种类和数量;基于车辆的每类设计参数及其取值范围,采用拉丁超立方试验设计方法获取各类设计参数的数据样本;将数据样本的粗糙化描述为车辆动力学的知识表达系统;进而将粗糙集属性约简算法和互信息属性约简算法相结合,给出车辆动力学设计参数重要度的定量分析方法。以定量分析某型动车组悬挂参数重要度为例,验证了该方法的正确性和可行性。采用该方法有助于克服车辆设计参数众多带来的设计优化效率不高的问题。
On the basis of the establishment of vehicle dynamics simulation analysis model,the variety and quantity of the design parameters were determined.Based on each type of design parameters and their values range,the data samples of various types of design parameters were obtained by Latin hypercube experimental design method.The roughness of data sample was described as the knowledge representation system of vehicle dynamics.Then the attribute reduction algorithm of rough set and mutual information were combined to achieve the quantitative analysis method for the design parameter importance of vehicle dynamics.The quantitative analysis for the suspension parameter importance of a type of EMU was taken for example,the correctness and feasibility of the method was validated.This method contributes to overcome the low design and optimization efficiency caused by the numerous design parameters of vehicle.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2014年第3期90-96,共7页
China Railway Science
基金
国家自然科学基金资助项目(51305367)
国家"八六三"计划项目(2012AA112002)
关键词
车辆动力学
设计参数
重要度
粗糙集理论
互信息
定量分析
Vehicle dynamics
Design parameter
Importance
Rough set theory
Mutual information
Quantitative analysis
