基于回流无级变速传动的混合动力汽车 运行模式转换控制策略

搭载回流无级变速传动装置的插电混合动力汽车在动力切换过程中存在两种切换形式：动力源之间的驱动模式切换和纯无级状态与回流状态之间的调速模式切换，两种切换都会导致动力耦合系统扭矩突变，影响汽车平顺性。在对回流式混合动力系统工作特性分析的基础上，制定了针对不同切换过程的扭矩协调控制策略，并通过MATLAB/Simulink仿真平台进行了验证。结果表明，该策略能够有效地减少该系统切换过程中的转矩波动和冲击。

Switching control strategy for plug-in hybrid electric vehicles with a reflux power continuously variable transmission

Hybrid electric systems with reflux power have two forms during switching. First, the driving mode switching between the power source and the speed control mode switching between the continuously variable transmission (CVT) situation and the power reflux situation. Both of them will cause a sudden change in the output torque of the power coupling system affecting vehicle ride comfort during motion. To solve this problem,we propose a dynamic control strategy for plug-in hybrid electric vehicles (PHEVs) with reflux power by a coordinated control system involving the motor, engine, and clutch to minimize vehicle jerk. The results from MATLAB simulations indicate that the proposed control algorithm can be used to efficiently reduce torque fluctuations and jerk.