摘要
针对双行星排式液驱混合动力汽车这一构型,分析了它在运行模式切换时出现动力不足和冲击的原因,提出了提高动力性和减小冲击的协调控制算法,同时,为拉维娜氏结构提出其高、低速比切换时两个离合制动器的控制方法。用AMESim和Matlab搭建了联合仿真模型,进行仿真。结果表明,采用协调控制后的车辆在运行模式切换时动力性和冲击度都得到改善,拉维娜氏结构高、低速比切换也达到预期要求。
Aiming at the configuration of hydraulic hybrid vehicle with a double planetary gear set,the causes of under power and jerk in operation mode switch are analyzed with a coordinated control algorithm for raising power and reducing jerk proposed.Meanwhile a way of control is put forward for two clutch brakes in switching between high and low speeds for Ravigneaux gear set.A co-simulation model is built with software AMESim and Matlab with a simulation conducted.The results show that with the coordinated control algorithm adopted,both power performance and jerk in switching working modes of vehicle are improved and the high-low speed switching behavior of ravigneaux structure also meets expected requirements.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第5期515-521,共7页
Automotive Engineering
基金
国家自然青年基金项目(51305155
51375202)
吉林大学科学前沿与交叉学科择优计划项目(2013ZY08)资助
关键词
液驱混合动力
双行星齿轮
工作模式切换
协调控制
hydraulic hybrid vehicle
double planetary gear set
working mode switch
coordinated control