汽车ABS逻辑门限控制及仿真  

ABS Logic Threshold Control and Simulation for Vehicle

作　　者：方春杰[1] 

机构地区：[1]重庆交通大学

出　　处：《汽车工程师》2017年第6期27-30,共4页Automotive Engineer

基　　金：重庆市重点实验室项目(csct2015yfpt_zdsys30001);重庆市自然科学基金重点项目(CSTC2013yykf B0184)

摘　　要：汽车在积水或冰雪等低附着系数路面遇到突发状况进行紧急制动时,不能充分利用其制动系统提供的制动力,前后车轮极易发生抱死,从而造成制动效能下降,汽车的制动距离大幅度增加。针对制动工况下的汽车,引入汽车防抱死系统(ABS)对其进行控制;建立单轮汽车系统动力学模型,并采用ABS逻辑门限控制将车轮滑移率控制在最佳范围;在Simulink中搭建制动系统的ABS控制仿真模型并进行离线仿真;仿真结果表明,采用ABS逻辑门限控制的汽车在低附着系数路面制动时,车轮不会完全抱死,制动效能不会迅速下降,可以有效地缩短汽车的制动距离,有助于提高汽车行驶的安全性。When a vehicle encounters accidents to make the emergency braking on low adhesion coefficient road covered by seeper, ice and snow, the braking force supplied by the braking system can＇t be utilized fully, and vehicle＇s front wheels and rear wheels are prone to be locked, which causes the degradation of braking efficiency and the greatly increase of vehicle＇s braking distance. Aiming at the vehicle under braking conditions, Anti-lock Braking System is introduced to control it. The dynamics model of single-wheel vehicle system is established, and ABS logic threshold control is applied to control the wheel slip rate in the optimum range. ABS control simulation model is established and the off-line simulation is conducted in Simulink. The simulation results indicate that wheels won＇t be fully locked, and the braking efficiency won＇t drop rapidly, when the vehicle employs ABS on low adhesion coefficient road, which contributes to improving the safety of automobile driving.

关 键 词：汽车 ABS 逻辑门限控制 SIMULINK 

分 类 号：U463.526[机械工程—车辆工程]