基于AMESim-Simulink的半挂汽车列车辅助驱动方法
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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%.
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%.
引文
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[ 2 ] 姚念猛,路玉峰,朱腾,等.基于AMESim的半挂汽车列车再生制动研究[J].汽车工程,2017,39(5):530-534,542.YAO N M,LU Y F,ZHU T,et al.A study on regene-rative braking of tractor-semitrailer combination based on AMESim[J].Automotive Engineering,2017,39(5):530-534,542.(in Chinese)
[ 3 ] MOLLA S,SILL J,AYALEW B.Hydrostatic wheel drives for vehicle stability control[J].SAE International Journal of Passenger Cars,2010,3(1):187-198.
[ 4 ] CHEN C K,VU T V,HUNG C W.Control strategy development and optimization for a series hydraulic hybrid vehicle[J].Engineering Letters,2013,21(2):101-107.
[ 5 ] VU T V,VU T H.An improvement of rule-based control strategy for a series hydraulic hybrid vehicle[J].Recent Advances in Electrical Engineering and Related Sciences:Theory and Application,2017,415:902-912.
[ 6 ] VU T V,CHEN C K.A fuzzy-based supervisory controller development for a series hydraulic hybrid vehicle[J].Recent Advances in Electrical Engineering and Related Sciences,2018,465:850-859.
[ 7 ] 曾小华,蒋渊德,李高志,等.重型车辆液压辅助驱动系统的前馈+反馈复合控制[J].华南理工大学学报(自然科学版),2016,44(9):116-122,150.ZENG X H,JIANG Y D,LI G Z,et al.Feedforward+feedback control for hydraulic assistance drive system of heavy truck[J].Journal of South China University of Technology (Natural Science Edition),2016,44(9):116-122,150.(in Chinese)
[ 8 ] 曾小华,李广含,宋大凤,等.轮毂液驱系统辅助驱动及再生制动控制与仿真[J].湖南大学学报(自然科学版),2017,44(10):9-16,24.ZENG X H,LI G H,SONG D F,et al.Control and simulation of auxiliary drive and regenerative brake for hydraulic hub-motor hybrid system[J].Journal of Hunan University (Natural Sciences),2017,44(10):9-16,24.(in Chinese)
[ 9 ] 刘涛,姜继海.并联式液压混合动力车辆能量控制策略[J].东南大学学报(自然科学版),2010,40(1):111-116.LIU T,JIANG J H.Energy control strategy research of parallel hydraulic hybrid vehicle[J].Journal of Southeast University (Natural Science Edition),2010,40(1):111-116.(in Chinese)
[10] ZENG X H,LI G H,YIN G D,et al.Model predictive control-based dynamic coordinate strategy for hydraulic hub-motor auxiliary system of a heavy commercial vehicle [J].Mechanical Systems and Signal Processing,2018,101:97-120.