湖南大学学报（自然科学版）2016，Vol.43Issue(2)：28-35,8.
分布式电驱动汽车 AFS 与电液复合制动集成控制
Integrated Control of Active Front Steering and Motor/Hydraulic Hybrid Braking in Distributed Electric Drive Vehicles
摘要
Abstract
A new control strategy was proposed by integrating active front steering and electro-hydrau-lic braking in distributed electric drive vehicles to ensure vehicle active safety by taking into account bra-king energy recuperation.The AFS controller was synthesized by means of sliding mode control.The wheel slip controller was designed with a hierarchical control structure.In the upper layer,sliding mode extremum-seeking algorithm was adopted to obtain the desired braking torque,and a dynamic control allo-cator considering different actuators bandwidths was employed to determine the optimal split between the electric and friction brake torque in the middle layer.In the lower layer,a hybrid actuator system consis-ting of the hydraulic brake and the electrical motor was designed on the basis of actuator position and rate constraints.The wheel slip control law was modified by introducing the road wheel angle factor consider-ing the strongly coupled dynamics of steering and braking systems when braking-in-turn.Simulation re-sults obtained with a 7-DoF vehicle model in MATLAB/Simulink environment have shown that the control strategy can significantly enhance vehicle directional stability and ensure braking energy recovery in split-μstraight-line braking,and can better track ideal yaw rate with vehicle lateral stability improvement when cornering.关键词
车辆工程/电液复合制动/主动前轮转向/能量回收/控制策略/极值搜索算法Key words
vehicle engineering/motor/hydraulic hybrid braking/active front steering/energy recu-peration/control strategy/extremum-seeking algorithm分类
交通工程引用本文复制引用
袁希文,桂林,周兵..分布式电驱动汽车 AFS 与电液复合制动集成控制[J].湖南大学学报（自然科学版）,2016,43(2):28-35,8.基金项目
国家自然科学基金资助项目（51275162），National Natural Science Foundation of China（51275162）；吉林大学汽车仿真与控制国家重点实验室开放基金资助项目（20121109）；高等学校博士学科点专项科研基金资助项目（20120161130001）；湖南大学汽车车身先进设计制造国家重点实验室自主课题 （）
