混合动力汽车制动稳定性分层协调控制策略  

A Hierarchical Coordinated Control Strategy for Enhancing the Braking Stability of Hybrid Electric Vehicle

作　　者：赵韩[1] 胡金芳[1] 叶先军[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009

出　　处：《汽车工程》2014年第1期93-100,共8页Automotive Engineering

基　　金：国家"863"节能与新能源汽车重大专项(2008AA11A139);中央高校基本科研业务费专项基金(2013HGBH0008;2013HGQC0030)资助

摘　　要：提出了混合动力汽车制动稳定性分层协调控制策略。制动过程中横摆力矩的补偿由再生制动力矩和目标滑移率的调整来完成,而通过对目标滑移率的实时确定,实现上层横摆力矩控制与下层滑移率及再生制动力矩控制的统一调节,保证车轮不出现抱死。在Matlab/Simulink平台上建立了7自由度整车模型,分别进行了低附着路面制动转弯和对开路面制动的仿真分析,结果表明,该制动稳定性分层协调控制策略,在保持制动效能的基础上,比单独滑移率控制能更好地保证混合动力汽车的制动稳定性。A hierarchical coordinated control strategy for enhancing the braking stability of hybrid electric vehicle is proposed.The desired yaw moment compensation during braking is fulfilled by adjusting regenerative braking torque and target wheel slip ratio,and the unified adjustment of yaw moment control in upper-layer and slip ratio and regenerative braking force control in bottom-layer is achieved by real-time determination of target slip ratio,ensuring wheels not to be blocked in braking.A seven-DOF vehicle model is established based on Matlab/Simulink platform,with which braking simulations are performed on low adhesion curved road and μ-split road respectively.The results show that the hierarchical coordinated control strategy proposed can better ensure the braking stability of hybrid electric vehicle while maintaining braking effectiveness,compared with sole slip ratio control.

关 键 词：混合动力汽车 再生制动 横摆力矩 滑移率 分层协调控制 制动稳定性 

分 类 号：U469.7[机械工程—车辆工程]