基于动态规划算法的双行星排式动力耦合机构分析
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摘要
针对不同构型的双行星排式混合动力汽车动力耦合机构,建立等效杠杆分析其功率分流特性以及系统传动效率,同时划分混合动力系统常用工作模式。在此基础上,搭建混合动力传动系统中发动机、电机、电池等动力部件模型,通过引入动态规划算法,以电池SOC为状态变量,以发动机转矩、转速为控制变量,设置整车油耗为目标函数,进行全局寻优。仿真结果表明,在NEDC工况下,相比于输入分流式,复合分流式构型在燃油经济性方面拥有更出色的表现。
Aiming at two different kinds of power coupling devices with dual planetary gear sets,the equivalent lever is established to analyze the power split characteristics and the transmission efficiency of the devices. At the same time,the common operation modes of hybrid systems with these power coupling devices are divided. On this basis, the power component model of the engine,motors and the battery are also established. By introducing dynamic programming algorithm, taking the battery SOC as state variable and engine torque and speed as control variable, the fuel consumption of the vehicle is set as the objective function for global optimization. Simulation results show that, under NEDC driving cycle, the compound-split power coupling device has superior fuel economy to the input-split power coupling device.
Aiming at two different kinds of power coupling devices with dual planetary gear sets,the equivalent lever is established to analyze the power split characteristics and the transmission efficiency of the devices. At the same time,the common operation modes of hybrid systems with these power coupling devices are divided. On this basis, the power component model of the engine,motors and the battery are also established. By introducing dynamic programming algorithm, taking the battery SOC as state variable and engine torque and speed as control variable, the fuel consumption of the vehicle is set as the objective function for global optimization. Simulation results show that, under NEDC driving cycle, the compound-split power coupling device has superior fuel economy to the input-split power coupling device.
引文
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[2]MUTA K,YAMAZAKI M,TOKIEDA J.Development of new-generation hybrid system THS II-Drastic improvement of power performance and fuel economy[J].Neurogastroenterology&Motility,2004,23(8):697.
[3]赵航,史广奎,王仁广,等.一种带发动机锁止机构的混合动力装置及其驱动方法:CN102320238 B[P].2013-08-21.
[4]项昌乐,韩立金,刘辉,等.混联混合动力车辆功率分流耦合机构特性分析[J].汽车工程,2010,32(3):183-187.
[5]CHEN L,ZHU F,ZHANG M,et al.Design and Analysis of an Electrical Variable Transmission for a Series-Parallel Hybrid Electric Vehicle[J].IEEE Transactions on Vehicular Technology,2011,60(5):2354-2363.
[6]王晨,赵治国,张彤,等.复合功率分流式e-CVT结构优化及验证[J].中国公路学报,2015,28(3):117-126.
[7]赵博闻.一种双排行星轮系动力耦合方案研究[D].上海:上海交通大学,2013:27-34.
[8]WANG W,SONG R,GUO M,et al.Analysis on compound-split configuration of power-split hybrid electric vehicle[J].Mechanism&Machine Theory,2014,78(8):272-288.
[9]沈登峰,王晨,于海生,等.复合功率分流混合动力汽车能量管理策略研究[J].汽车工程,2017,V39(1):15-22.
[10]杨官龙,秦大同,刘永刚,等.CVT插电式混合动力汽车全局优化控制策略[J].中南大学学报(自然科学版),2014(12):4194-4201.
[11]YAZDANI A,SHAMEKHI A H,HOSSEINI S M.Modeling,performance simulation and controller design for a hybrid fuel cell electric vehicle[J].Journal of the Brazilian Society of Mechanical Sciences&Engineering,2015,37(1):375-396.
[12]胡红斐,黄向东,罗玉涛,等.并联式混合动力电动汽车全局优化控制[J].华南理工大学学报(自然科学版),2006,34(4):28-32.