基于路面识别的HEV制动系统控制算法研究

为实现ISG混合动力汽车最大限度地回收再生制动能量,并保证其制动安全性,提出了一种协调再生制动系统和液压制动系统制动力矩动态分配的控制算法。该控制算法以路面识别为基础,以在制动过程中车轮滑移率为路面的最佳滑移率为控制目标,实时计算并动态调整前后轮液压制动力矩和再生制动力矩,保证在制动过程中车轮获得最大的附着系数。仿真结果验证了所制定的控制算法的稳定性和有效性。

Abstract：

In order to recycle braking energy as much as possible and ensure the safety in braking for ISG Hybrid Electric Vehicles,a novel coordinated control algorithm was proposed for dynamical distribution between regenerative braking torque and hydraulic braking torque.To assure that the adhesion coefficient of wheels is maximal during braking,the control algorithm based on the Road identification synchronously calculates and dynamically adjusts front wheel hydraulic braking torque,rear wheel hydraulic braking torque,regenerative braking torque and makes Slip Ratio of wheels equal to Optimal Slip Ratio all along.The simulation results show that the proposed control algorithm is steady and effective.

Research on Control Algorithm of HEV Braking System Based on Road Identification

In order to recycle braking energy as much as possible and ensure the safety in braking for ISG Hybrid Electric Vehicles,a novel coordinated control algorithm was proposed for dynamical distribution between regenerative braking torque and hydraulic braking torque.To assure that the adhesion coefficient of wheels is maximal during braking,the control algorithm based on the Road identification synchronously calculates and dynamically adjusts front wheel hydraulic braking torque,rear wheel hydraulic braking torque,regenerative braking torque and makes Slip Ratio of wheels equal to Optimal Slip Ratio all along.The simulation results show that the proposed control algorithm is steady and effective.