基于matlab汽车道路模型研究论文

武汉工业学院 毕业设计(论文) 2011届 毕业设计(论文)题目：基于MATLAB的汽车道路模型研究 院 (系) 机械工程学院 专业名称 机械设计制造及其自动化 学生姓名 瞿先明 学生学号 070301133 指导教师 胡志刚 侯传亮 2011年6月9日I 摘要 汽车虚拟样机技术，是计算机技术应用到机械行业中来以后产生的 一种新的汽车振动性能实验方法。但虚拟样机技术实验的结果，强烈地 依赖于所建立的仿真模型的真实程度。目前大多数汽车振动分析的激振 信号，采用随机信号或变频正弦激励信号，虽然激振频带能包含汽车固 有频率，但激振信号并不能代替实际路面振动情况。 行驶平顺性是汽车的重要性能之一，它不仅影响了乘客的乘坐舒适 性，而且也是防止司机疲劳，避免造成车祸的重要因素，因此行驶平顺 性曰益受到人们的重视。但是传统的研究分析方法已无法满足现代汽车 的研究要求，虚拟样机技术作为一项新的技术，已经开始用到各个领域。 本文比较详细的介绍了行驶平顺性的概念、评价指标和评价方法以 及目前该领域的研究现状。介绍了MATLAB/SIMULINK软件的主要模块和 软件的理论基础，为后面的建模和仿真分析奠定了基础。并在MATLAB平 台下，利用滤波白噪声生成法重构时域路面不平度仿真模型，并考虑行 驶速度对汽车振动的影响。 关键词：随机路面 MATLAB ADAMS 道路模型II Abstract The virtual prototype technology is a computer technology that applied to mechanical industry, Which after a new cars produced vibration perance test s. But the results of the virtual prototype technology experiment, intra operative dependent strongly on the simulation model, that is established by the true extent. Most current auto vibration analysis vibration signal, using random signals or frequency conversion. Although the excitation frequency band can include the automobile inherent frequency, but excitation letter Number cannot replace real pavement vibration circumstances. The tiding comfort is one of the most important perances of vehicle．It call influence not only the feeling of passengers，but also the prevention of crash by avoiding making the driver tired. So it is paid more and more emphasis gradually．The traditional research can’t not match the modern requirement of vehicle’s research and development．So Virtual Prototyping Technology has been applied in many fields as a new industrial technology． This dissertation introduces the concept, uating indicator, uation and the present status of vehicle tiding comfort in detail. Then the key modules and the theoretical basis of MATLAB are introduced, which will be used in the following chapters．These theories are the base of subsequent model building and simulation analysis．In MATLAB flat, we use filtering White noise generating , that can reconstruct road roughness simulation model of time domain, and consider the road Speed on the influence of auto vibration. Key words: random road MATLAB ADAMS road modeIII 目录 摘要.I ABSTRACT .II 1 绪论 1 1.1 引言 1 1.2 汽车行驶平顺性研究的意义 2 1.3 汽车行驶平顺性研究的发展概况