基于减速度参数的电子制动力分配控制算法  

Control algorithm of electronic braking force distribution based on deceleration parameters

作　　者：张永辉[1] 于良耀[1] 宋健[1] 沈俊[1] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《江苏大学学报（自然科学版）》2010年第6期645-650,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50905092)

摘　　要：基于两轮车辆模型分析了利用路面峰值附着系数的电子制动力分配系统(EBD)的工作原理,研究了路面附着系数与车轮峰值地面制动力的关系,以后轮最大峰值地面制动力为目标确定了制动力的分配系数.讨论了前轮或后轮达到峰值制动力时车辆减速度实际值与目标值的差异,提出了以车辆减速度和车轮减速度为参数的EBD控制算法,开发了相应的EBD控制流程.在自主研发的防抱制动系统(ABS)中进行了EBD功能集成测试,结果表明:前后轮同时达到峰值附着系数φp的制动力分配曲线与前后轮同时抱死的I曲线一致.一定载荷下,后轮制动力存在最大值,且存在较宽范围的φp,对应最大制动力变化不大,EBD能在ABS作用前有效调节后轮制动力.Based on the two-wheel vehicle model,the principle of electronic braking force distribution（EBD） using peak tire-road friction coefficient was analyzed.The relationship between road friction coefficient and wheel peak braking force was studied and the braking force distribution coefficient was determined aiming at maximal rear wheel peak braking force.Difference between real and target decelerations of vehicle was discussed when front or rear wheel worked at peak braking force.EBD control algorithms using vehicle and wheels deceleration parameters were proposed and corresponding EBD processes were developed.EBD function is integrated and tested with self-developed anti-lock braking system（ABS）.The results show that the braking force distribution curve of front and rear wheels simultaneously working at peak tire-road friction coefficient φp is the same as the I-curve of front and rear wheels simultaneously being locked.There exists a maximum peak braking force of rear wheel under fixed load and it changes little in a certain range of φp.EBD can effectively adjusts rear wheel braking force before ABS functions.

关 键 词：电子制动力分配 减速度 制动 算法 防抱制动系统 

分 类 号：U463[机械工程—车辆工程]