Abstract

The paper evaluates the braking ride comfort of commercial vehicle through total weighted acceleration root mean square and Derivative of acceleration (Jerk). Based on the vehicle dynamics model, tire model and braking implement model, the commercial vehicle braking pressure, braking pressure change rate and braking ride comfort of correlation model is established. The commercial vehicle dynamics simulation model for braking pressure change rate is established by using MATLAB/Simulink software. The simulation comparison of MATLAB/Simulink and IPG/TruckMaker verify the correctness and effectiveness of the correlation model. Taking the effect of single and double braking chamber pressure change rate as an example. The effect of the unusual change of pressure change rate of the front and rear axle single braking chamber and the coaxial and ipsilateral braking chamber on the commercial vehicle braking ride comfort is analyzed by comparativing. Some theoretical basis for commercial vehicle in intelligent braking and automatic driving is provided.

摘要

本文通过总加权加速度均方根和加速度的导数（Jerk）来评价商用车的制动平顺性。基于车辆动力学模型、轮胎模型和制动装置模型，建立了商用车制动压力、制动压力变化率和制动平顺性的相关模型。利用MATLAB/Simulink软件建立商用车制动压力变化率动力学仿真模型。MATLAB/Simulink与IPG/TruckMaker的仿真对比验证了关联模型的正确性和有效性。以单双制动室压力变化率的影响为例。通过对比分析前后桥单制动室和同轴同侧制动室压力变化率异常变化对商用车制动平顺性的影响。为商用车在智能制动和自动驾驶方面提供了一定的理论依据。