基于Trucksim的弯道安全车速模型研究

发布时间：2018-01-10 13:37

本文关键词：基于Trucksim的弯道安全车速模型研究　出处：《广西大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：为提高车辆弯道行驶的安全性,针对汽车弯道行驶中侧滑、侧翻等侧向失稳问题,选用某型商用车为研究对象,考虑车辆悬架的动刚度特性和轮胎的非线性特性等,通过Trucksim软件建立了整车动力学模型,在平直路面上进行了不同弯道半径、不同附着系数与通过车速的交互仿真试验,然后在曲面函数拟合的基础上结合仿真实验数据建立了安全车速与附着系数、弯道半径的数学模型。通过Matlab仿真将本文模型与现有的弯道安全车速计算模型进行对比分析,该模型得到的弯道安全车速值在现有模型的计算值之间,同时在当路面附着系数在上升到某一定值后,通过模型计算出的安全车速值还呈现出车速峰值现象,反映出了通过弯道时的侧翻现象;最后,采用Trucksim软件对转弯半径为250 m、附着系数0.7的弯道仿真,使得出的安全车速值与该模型得到的安全车速值进行对比,本文模型将计算误差从传统计算模型的16%降低到了1.4%,提高了计算精度。该研究为车辆转弯时的侧翻、侧滑评价以及车辆转向行驶的主动安全控制提供了参考。
[Abstract]:In order to improve the safety of vehicle bend, a commercial vehicle was selected as the research object to solve the lateral instability problems such as sideslip and rollover. Considering the dynamic stiffness characteristics of vehicle suspension and the nonlinear characteristics of tire, the dynamic model of the vehicle is established by Trucksim software, and different curved radius is carried out on the flat road surface. Different adhesion coefficient and through the speed of the interactive simulation test, and then on the basis of curved surface function fitting combined with the simulation experimental data to establish the safety speed and attachment coefficient. The mathematical model of the curve radius. The model is compared with the existing curve safety speed calculation model by Matlab simulation. The safety speed of the curved road obtained by the model is between the calculated values of the existing models, and when the road adhesion coefficient rises to a certain value, the safety speed calculated by the model also shows the phenomenon of peak speed. It reflects the phenomenon of rollover when passing through the bend. Finally, the Trucksim software is used to simulate the curve with the turning radius of 250m and the attachment coefficient of 0.7, which makes the safe speed value compared with the safety speed value obtained by the model. In this paper, the calculation error is reduced from 16% of the traditional model to 1.4, which improves the accuracy of the calculation. The evaluation of sideslip and the active safety control of vehicle steering are provided.
【作者单位】：山东理工大学交通与车辆工程学院;
【基金】：国家自然科学基金资助项目(51508315) 山东省自然科学基金项目(ZR2016EL19)
【分类号】：U461;U491.25
【正文快照】： 0引言弯道交通事故是众多交通事故种类中的一种,具有频发性、发生概率大和危害性大等特点。根据2013年中国公安部公开的道路交通事故统计年报清晰的看出,在其全年中年发生在弯道的交通事故高达3.6万起,死亡人数多达1.4万,分别占道路交通事故总数的18.4%和23.3%[1],这其中有超

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