基于加速度干扰的圆曲线上行车舒适性的研究  

Research of Driving Comfort on Circular Curve Based on Acceleration Noise

作　　者：罗强[1] 许伦辉[1] 黄艳国[1,2] 蒋晓峰[1] 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640 [2]江西理工大学机电工程学院,江西赣州341000

出　　处：《广西师范大学学报（自然科学版）》2012年第1期5-9,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(50878088);江西省自然科学基金资助项目(2010GQS0076)

摘　　要：车辆速度的变化影响到行车舒适性,而加速度干扰正是对车辆速度变化的描述,因此加速度干扰可作为行车舒适性的定量评价指标。选择平面线形中三要素之一的圆曲线上的行车舒适性进行研究,将车辆的加速度按水平和竖直方向进行分解,结合加速度干扰理论,分别建立2个方向的分加速度干扰模型。根据人体对不同振动方向的敏感程度不同,给予不同的计权系数,建立了圆曲线上合加速度干扰模型。最后,选用实际圆曲线道路进行实例仿真,并分析加速度干扰值的变化过程及行车舒适性,分析结果表明圆曲线半径和行车速度均对行车舒适性有较大影响。新模型既可为全面准确评价行车舒适性提供定量的计算表达式,又可在圆曲线道路设计时提供一定的参数设计依据。The vehicle swing affects traffic safety and riding comfort,while the acceleration noise is exactly a description of vehicle swing.Thus,acceleration noise could be a quantitative evaluation indicator of driving safety and comfort.Combining with acceleration noise theory,two new acceleration noise models are established by dividing vehicle acceleration into horizontal component and vertical component.Different proportion is given because human body is not the same in sensibility to different vibration directions.Then,the synthetic acceleration noise model is established.Finally,simulations are performed by choosing appropriate road.The simulation results show that curvature radius and driving speed have great large influence on riding comfort.The new model can provide not only mathematical model to evaluate riding comfort completely,but also certain parameters for reference in new highway design.

关 键 词：圆曲线 曲线半径 加速度干扰 行车舒适性 评价指标 

分 类 号：U491[交通运输工程—交通运输规划与管理]