紧急制动工况下车辆的PI稳定性控制  

PI Stability Control of Vehicle Under Emergency Braking Conditions

作　　者：李军[1] 方春杰[1] 束海波[1] 

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《华侨大学学报（自然科学版）》2017年第2期135-140,共6页Journal of Huaqiao University(Natural Science)

基　　金：重庆市自然科学基金重点项目(CSTC2013yykfB0184);重庆市教委科技项目(KJ120423);重庆市重点实验室项目(csct2015yfpt_zdsys30001)

摘　　要：针对制动工况中的汽车,建立9自由度车辆动力学模型,并基于车辆动力学模型,采用比例-积分(PI)稳定性控制逻辑算法对车辆的行驶状况及运动姿态进行控制.最后,利用CarSim和MATLAB/Simulink联合仿真平台,结合低附着系数路面和对开路面的紧急制动工况进行离线仿真.仿真结果表明:采用稳定性控制逻辑算法可以改善车辆的纵向运动状态,有效地抑制车辆的侧向运动,有助于提高车辆的稳定性.In this paper,a nine-degree-freedom dynamic model was built and a proportional integral（PI）stability control logic algorithm was applied to control vehicles driving conditions and postures under the conditions of emergent braking.Off-line simulations were performed using CarSim and MATLAB/Simulink software to study the effects of low adhesion coefficient road and bisectional road during the emergency braking condition.Simulation results demonstrated that the stability control logic algorithm can improve the vehicle longitudinal motion state and effectively inhibit undesirable lateral movement of vehicle which contributes to enhancing the vehicle stability.

关 键 词：车辆 对开路面 紧急制动 稳定性控制 动力学模型 

分 类 号：U463[机械工程—车辆工程]