转向加速工况下汽车驱动防滑控制系统滑转率算法研究  

Algorithm Research on Slip Ratio of Acceleration Slip Regulation Under Vehicle Cornering Situation

作　　者：李志远[1] 张彪[2] 侯顺艳[1] 李浩东[1] 常云霞[1] 

机构地区：[1]河北大学 [2]北京理工大学

出　　处：《汽车技术》2009年第7期23-25,共3页Automobile Technology

基　　金：河北大学博士项目(2009170)资助

摘　　要：汽车低速转弯加速时,用后轮轮速作为参考车速计算驱动轮滑转率会造成计算偏差,引起驱动防滑控制系统误干预,为此提出了驱动轮滑转率计算的修正算法。该修正算法不需要增加前轮转角传感器,而是采用两非驱动轮轮速估计车身横摆角速度和汽车前轮转角,进而计算出前轮参考轮速,并将前轮参考轮速代替车速对转弯工况的驱动轮滑转率计算进行修正。试验结果表明,该修正算法消除了滑转率计算误差,可防止汽车在高附着路面上转弯加速时驱动防滑控制系统的误干预。The calculation of driving wheel slip ratio by using rear wheel speed as reference speed could lead to a calculation error and wrong intervention of acceleration slip regulation （ASR）when vehicle was turning at low speed, therefore a modified algorithm was introduced for calculating driving wheel slip ratio under cornering situation.In the algorithm,the yaw rate and the steering wheel angle of vehicle are firstly estimated by two driven wheels without corresponding sensors,then the front wheel reference speed was obtained,and driving wheel slip ratio was amended with front wheel reference speed replacing vehicle speed finally.Experimental results showed that the calculation error of slip ratio was eliminated,and wrong intervention when the vehicle is accelerating on high-adhesion road surface disappeared after the modification.

关 键 词：转向加速工况 驱动防滑控制系统 滑转率 算法 

分 类 号：U467.1[机械工程—车辆工程]