MATLAB在汽车动力性能仿真优化中的应用  

Application of MATLAB in Simulation and Optimization of Vehicle Dynamic Performance

作　　者：刘荣学 LIU Rongxue(Zhengzhou Weizhong Automobile Sales Co.,Ltd.,Zhengzhou,Henan Province,450000 China)

机构地区：[1]郑州威众汽车销售有限公司,河南郑州450000

出　　处：《汽车知识》2023年第5期230-232,共3页Auto Know

摘　　要：随着我国经济和科技水平的不断发展,人们对于汽车的需求也越来越大。为了满足市场上日益增长的需要,各大车企都加大了研发力度。但目前国内很多企业仍然采用传统的设计方法来进行汽车产品开发,这种方式不仅效率低下而且成本高昂。因此,如何利用计算机技术实现汽车产品的快速、高效设计已成为当前研究热点之一。该文以某款轿车为例,通过建立其整车模型并结合相关理论知识,运用Matlab/Simulink软件对其动力性及燃油经济性等指标进行分析与优化。首先介绍了汽车动力系统参数匹配的基本原则以及常用的计算公式;然后基于Cruise软件平台搭建了包含发动机模块、传动系模块、行驶阻力模块、车轮模块、制动器模块、轮胎模块、转向模块、空气动力学模块等在内的整车动力学仿真模型,其中重点阐述了车辆动力性评价指标的确定及其数学表达式;最后针对该车型的动力性和燃油经济性两个方面分别提出相应的改进方案,并将改进后的结果与原有方案进行对比分析,验证所建模型的准确性。With the continuous development of China’s economy and science and technology,people’s demand for cars is also increasing.In order to meet the growing needs of the market,major automobile enterprises have increased their research and development efforts.However,at present,many enterprises at home and abroad still use traditional design methods to develop automobile products,which is not only inefficient but also costly.Therefore,how to use computer technology to achieve rapid and efficient design of automotive products has become one of the current research hotspots.This paper takes a car as an example,analyzes and optimizes its power performance and fuel economy by using Matlab/Simulink software through establishing its vehicle model and combining relevant theoretical knowledge.First of all,the basic principles and commonly used calculation formulas of vehicle powertrain parameter matching are introduced;Then,based on the Cruise software platform,the vehicle dynamics simulation model including engine module,transmission system module,driving resistance module,wheel module,brake module,tire module,steering module,aerodynamics module,etc.is built,in which the determination of vehicle dynamics evaluation index and its mathematical expression are emphasized;Finally,corresponding improvement schemes are proposed for the power and fuel economy of the vehicle,and the improved results are compared with the original scheme to verify the accuracy of the model.

关 键 词：MATLAB 汽车动力性能 仿真优化 

分 类 号：U461.1[机械工程—车辆工程]