基于平板式制动检验台的ABS汽车制动力检测分析研究

发布时间：2018-01-22 02:07

本文关键词： 制动力检测滑移率 ABS ADAMS/Simulink仿真　出处：《吉林大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着经济的不断发展和科技的日益进步,人们对汽车各项性能指标的要求也在不断的提高,在汽车的诸多性能之中,安全性又是使用者最为关注的一点。汽车的制动性能与汽车的安全性密切相关,因此能够准确检测汽车的制动性能有着极其重要的意义。平板式制动检验台是检测汽车制动性能的主要设备之一,在用平板台进行汽车制动性能检测时由于汽车ABS的作用,汽车和平板组成的动力学系统有能量消耗并且轮胎无法抱死,造成无法检测出汽车真实的制动力,因此在用平板式制动检验台对车辆进行制动检测时存在一定的误差。针对车辆在用平板检验台检测制动力时存在误判的情况,本文开展对平板式制动检验台对ABS汽车制动力检测的分析研究。本文对目前制动力检测的方法以及制动检测的评价标准和指标做了分析;在对车轮地面附着力、地面制动力以及制动器制动力关联关系分析的基础上建立了汽车制动力力学分析模型;基于平板式制动检验台的结构和工作原理以及制动过程中的重心前移建立了整车-平板力学分析模型。运用ADAMS虚拟样机分析软件建立了整车-平板模型。其中,整车模型包括:制动系统模型、轮胎模型、前后悬架模型、转向系模型、动力系统模型和车身模型七个子系统。基于ADAMS以及ADAMS/Simulink对车辆的制动过程进行联合仿真,得到在ABS有效和无效两种情况下的轮胎滑移率、制动平板传感器仿真值、轮胎与制动平板之间摩擦力值,并运用Lab View虚拟样机软件编写汽车制动力测试系统,进行实车对比试验,通过仿真数据与实车数据的对比,对上述假设的正确性进行验证,为以后ABS汽车制动力检测及检测标准的修订提供数据及理论方面的依据。
[Abstract]:With the continuous development of economy and the progress of science and technology, the requirements of various performance indicators of the automobile are also continuously improved, among the many performances of the automobile. Safety is also the most concerned point for users. The braking performance of the vehicle is closely related to the safety of the vehicle. Therefore, it is of great significance to accurately detect the braking performance of the automobile. The flat brake test bench is one of the main equipment to detect the braking performance of the automobile. Because of the effect of automobile ABS, the dynamic system composed of automobile and flat plate has energy consumption and the tire can't lock, which makes it impossible to detect the real braking force of the vehicle. Therefore, there is a certain error in the brake detection of vehicles with the flat brake test bench, and there is a misjudgment in the detection of braking force of the vehicle with the flat plate test table. In this paper, the analysis and research of ABS brake force detection are carried out on the flat brake test bench, and the methods of brake force detection and the evaluation standard and index of brake detection are analyzed in this paper. Based on the analysis of wheel ground adhesion, ground braking force and brake braking force, the vehicle braking force analysis model is established. Based on the structure and working principle of the flat brake test table and the forward movement of the center of gravity during braking, the mechanical analysis model of the whole vehicle and the flat plate is established by using the ADAMS virtual prototype analysis software. Among them. The whole vehicle model includes: braking system model, tire model, front and rear suspension model, steering system model. Seven subsystems of power system model and body model are used to simulate the braking process of vehicle based on ADAMS and ADAMS/Simulink. The tire slip ratio, the simulation value of the brake plate sensor and the friction between the tire and the brake plate are obtained in the case of effective and ineffective ABS. And use Lab View virtual prototype software to write the automobile brake force test system, carry on the actual vehicle contrast test, through the simulation data and the real car data contrast, the validity of the above hypothesis is verified. To provide the data and theoretical basis for the later revision of ABS brake force test and test standard.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.526

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