基于轮缸压力的制动能量回收评价方法

Evaluation method of braking energy recovery based on wheel cylinder pressure

针对于目前常用的制动能量回收率和续驶里程增加率的制动能量回收评价指标,分析了整车具体系统方案和制动力分配算法,考虑整车CAN协议开放程度,利用压力传感器获取轮缸压力信号,提出基于轮缸压力的制动能量回收评价方法,并进行实车试验。结果表明,该评价方法可行性高,与常用评价方法计算结果相比,相对误差率在6%以内,丰富了制动能量回收评价理论。

According to the commonly used braking energy recovery rate and driving range increase rate of the braking energy recovery evaluation index,the vehicle specific system scheme and the braking force distribution are analyzed.Then,a braking energy recovery evaluation method based on wheel cylinder pressure is put forward considering the opening degree of the vehicle Controller Area Network（CAN）protocol.The wheel cylinder pressure signal is acquired by pressure sensor.Vehicle test is carried out and the results show that,with relative error rate less than 6%,the proposed method is feasible,which enriches the braking energy recovery evaluation theory.