一种新的ABS轮速处理方法研究

进入单片机的ABS原始轮速信号,不仅可能混入畸变信号,而且叠加了高频信号。利用此原始轮速信号来控制ABS,可能导致ABS电磁阀误动作。本文综合运用周期法和频率法,先用软件剔除信号中的畸变信号,之后采用滤波加拟合的方法计算轮速及其角加速度,并以此作为控制依据。ABS实车道路实验结果表明,上述方法计算得到的车轮角加速度波动较小,能够作为控制输入并满足控制的实时性要求。

Research on a New ABS Wheel Speed Processing Approach

ABS wheel speed signals which enter the siglechip may interfuse aberrance signals and add high frequency signals.If we use the original wheel signals to control ABS,it may lead to wrong action of ABS valve.In this paper,cycle and frequency ap-proaches are synthetically used,removing aberrance signals first and then filtering and fitting are adopted for wheel angle acceleration and we regard the acceleration as controls parameter.The result of ABS road test testifies that the approach can make the accelera-tion fluctuates less and make it be the controls parameter and satisfy real-time performance.