摘要
混合动力汽车纯电动模式切换到纯发动机驱动的切换过程包括发动机起动、电机的扭矩协调以及分离离合器的动态结合的滑摩控制过程。由于发动机和电机之间动态性能的差异、分离离合器的接合或分离等原因而造成的在模式切换过程中输出转速转矩的波动及影响整车行驶的平稳性的问题。为解决上述问题,将具体切换过程分为了四个阶段,分别为发动机起动阶段、发动机独立加速阶段、离合器转速同步阶段、动力系统扭矩协调阶段,并针对每个阶段进行动力学分析,得出动力学方程,在Matlab环境下搭建了动力学模型并进行仿真分析,结果表明所设计的模式切换控制方法可以保证切换过程的动力传递的平稳性,为进一步的整车试验奠定基础。
The switching process of pure electric drive mode to engine drive mode of hybrid electric vehicle ineludes engine start, the torque of the motor coordination and the clutch dynamics of slip control. Due to the different dynamic performances between engine and motor and the joint or separate of clutch, the output torque and speed in the process of switching will influence vehicle performance. This paper divides the specific switching process into four stages ： the engine starting stage, engine accelerating independently stage, clutch speed synchronous stage, and power system coordinated torque stage, respectively. Kinetic analysis is made for every stage, the dynamic equations are obtained, and the dynamic model is established in Matlab and simulation analysis, the results show that the designed mode switching control method can ensure the switching process smoothly.
出处
《计算机仿真》
CSCD
北大核心
2015年第11期179-182,共4页
Computer Simulation
基金
国家科技支撑计划(2014BAG06B02)
中央高校基本科研业务费专项资金资助(2014HGCH0003)
