摘要
以某重型半挂汽车列车为研究对象,将液压再生制动系统安装于半挂车车轴以输出动力.为防止因蓄能器能量突然释放完毕后对车辆造成冲击,提出了一种液驱控制策略.对牵引座纵向力与液压系统能量释放进行理论分析,根据蓄能器储能状态值SOC,并结合车辆挡位,采用分段恒转矩的能量释放方法,并在适当时机逐步退出液压辅助驱动模式,以降低牵引座纵向冲击.另外,采用旁路节流阀式调速回路对马达转速进行调节.基于AMESim和MATLAB/Simulink平台的联合仿真结果表明:液压马达输出转矩较为平顺,牵引座纵向力无明显突变;与无液驱退出控制的车辆相比,提出的控制算法最高可降低牵引座纵向力11.40%,同时提高整车加速度18.37%.
With a tractor-semitrailer as research object,the hydraulic regenerative braking system was installed on the semitrailer axle to output power.To avoid the impact on vehicle by sudden exhaustion of accumulator energy,a control strategy was proposed.The longitudinal force of fifth wheel and the hydraulic energy release were analyzed.The torque of hydraulic motor was exported according to the SOC value of accumulator and the gear ratio of vehicle,and the output torque under fixed gear was constant.To reduce the longitudinal impact on the fifth wheel,the hydraulic auxiliary driving mode was exited at appropriate time.The by-pass throttle valve type circuit was used to adjust rotation rate of hydraulic motor.The co-simulation results on the AMESim and MATLAB/Simulink platform show that the output torque of motor and the longitudinal force of fifth wheel are steady.Compared with the vehicle without auxiliary driving,the control method can reduce the longitudinal force of fifth wheel by 11.40%and increase the vehicle acceleration by 18.37%.
作者
刘延旭
路玉峰
姚念猛
LIU Yanxu;LU Yufeng;YAO Nianmeng(School of Mechanical and Automotive Engineering,Qilu University of Technology (Shandong Academy of Sciences),Jinan,Shandong 250353,China)
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2019年第4期380-385,共6页
Journal of Jiangsu University：Natural Science Edition
基金
山东省重点研发计划项目(2015GGX105005)
山东省教育厅高校科研计划项目(J14LB01)
关键词
半挂汽车列车
液压混合动力
液压辅助驱动
蓄能器
液压马达
tractor-semitrailer
hydraulic hybrid system
hydraulic auxiliary driving
accumulator
hydraulic motor
