文档介绍：爆胎汽车建模与稳定性控制摘要随着我国公路事业的不断发展以及汽车保有量的不断增大,公路交通安全已成为人们生活中必不可少的一部分。在各类交通事故中,车辆因爆胎引发的交通事故正逐年增加。特别在高速公路上,爆胎是引发各类重大交通事故的主要原因之一,严重威胁人们生命财产安全。轮胎爆裂后,其径向和切向力学特性发生巨大变化。轮胎特性变化会严重影响车辆操纵性及稳定性,而且爆胎产生的干扰极易使驾驶员产生误操作,使情况进一步恶化。因此,对爆胎的研究具有重要的学术及实际意义。针对目前对爆胎研究较少的现状,本文在国内外学者的研究基础上,重点对爆胎轮胎和整车建模及爆胎车辆稳定性控制进行了研究,主要包括以下几个方面: (1)通过将轮胎简化为串联弹簧模型,对爆胎过程中轮胎径向特性进行了数学建模,直观准确地反映了爆胎过程。(2),减小了对轮胎台架实验的依赖。,模拟了轮辋触地后的力学特性。将建立的轮胎模型载入Carsim软件,验证了爆胎轮胎模型的正确性与实用性。同时研究了在驾驶员干预情况下车辆的动力学响应。(3)结合爆胎轮胎模型,基于牛顿第二定律,采用Matlab/Simulink工具箱, 建立了爆胎整车14自由度模型,并通过与Carsim模型进行直线与弯道行驶工况下的对比仿真,验证了本文模型。车辆垂向建模时采用绝对坐标,使仿真结果可以直接体现爆胎后车辆姿态。(4)借助本文整车模型,针对直线与弯道行驶工况,分析了车辆爆胎后的运动趋势;同时,仿真了爆胎后车辆参数的变化及相互影响,简要分析了车辆出现相关运动的原因。(5)分析了爆胎车辆稳定性控制的基本思路。采用模糊控制器替代常用的线性二次型最优控制器进行了横摆力矩决策,使控制过程更加简单。通过Simulink与 Carsim的联合仿真,检验了本文控制器对爆胎车辆稳定性所起的积极作用。关键词:爆胎;;整车模型;稳定性控制;模糊控制器硕士学位论文 Abstract With thedevelopment of our national pavement construction aswell asthe increase ofautomobile quantities,thetrafficsafety has e acommon problem in our daily attribution of tireblow-out to avariety oftraffic accidents isincreasing year forcircumstances on ahighway,tire blow-out has been considered as one ofthe significant causes leading tovarieties of severe traffic accidents,which may cause utmost damage tothe lifeand property safety ofpeople. The radial and shear characteristics change sharply when atireblows changes may bring serious effects on themaneuvering ability andstability of avehi— ,interferences caused by these changes may easily make the driver to conduct improper manipulations which willmake things itisvery signi- ficant intheory and practical engineering toanalyse thetireblow-out. Notice thatthere is still afew reseaches on modeling and dynamics ofvehicle with tireblow- emphases are played on the modeling of the blown-out tire, modeling ofwhole car when itstireblows out and the stability control to a car with work iSsummarized asfol