摘要
双电机耦合驱动系统是一种能有效改善电动汽车经济性且提高续驶里程的新型电驱动系统,但该系统结构复杂,存在多种驱动模式,不同模式之间进行切换可能会导致驱动系统输出转矩的突变从而导致整车产生较大的纵向冲击。根据双电机耦合驱动系统的结构特点,重点分析单电机驱动与转矩耦合驱动模式切换过程中各部件的工作状态以及各部件之间的运动学关系,以整车冲击度最小为控制目标,提出一套双电机耦合驱动系统单电机驱动与转矩耦合驱动模式切换控制策略。基于Matlab\Simulink仿真平台,搭建双电机耦合驱动系统前向仿真模型,验证了所制定的双电机耦合驱动系统模式切换协调控制策略的有效性,结果表明,所制定的控制策略可实现整车模式切换过程中冲击度小于2.5 m/s^3,且无动力中断。
Dual-motor coupling powertrain（DMCP） is a kind of novel motor powertrain which can extend range of EV（electric vehicle）.Nevertheless,complicated complicated structure and multiple drive modes exist in the DMCP.The different mode-shift process may lead to the output torque fluctuation in DMCP as well as a biggish vehicle jerk.Based on the analysis of the structure,the jerk value and kinetics relationship of the torque coupling process and signal motor process are analyzed.The mode-shift process from single motor to torque coupling is analyzed.The control strategy are established with the detail facing-forward transmission simulation model developed using Matlab／Simulink.The result shows that the mode-shift process from single motor to torque coupling limited jerk value less than 2.5 m/s^3,without a dynamic power interruption.The control strategy can improve the ride comfort of the DMCP during the mode-switch process.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2017年第14期59-67,共9页
Journal of Mechanical Engineering
基金
国家自然科学基金(51675062)
重庆市科委(cstc2015zdcy-ztzx60004)
(cstc2015yykf C60003)资助项目
