基于发动机转矩修正的汽车换档冲击控制仿真

Modeling and Simulating of Car Jerk Caused By Shifting Based on Mending the Torque of an Engine

为了有效的抑制汽车自动变速器的换档冲击,结合自动变速器控制模型的建立,提出了一种针对发动机转矩进行修正的新方法。以整车行进中的换档冲击度为控制目标制定模糊逻辑控制策略,从而建立了档位预判、发动机转矩的模糊修正控制及模糊控制信号模型。基于Matlab/Simu-link对建立的模型进行仿真分析。仿真结果表明:所提出的控制方法能够合理地修正发动机转矩,从而有效地降低了换档冲击度,保证了车辆的换档平顺性。

For controlling car jerk during shifting efficiently, a new strategy of mending the torque of an engine is brought forward. A fuzzy controller is adopted to mend the torque of the engine. In addition, we also create the subsystems of ahead-shift for mending the torque of the engine and for signal-control. Simulation results show that the strategy is feasible. The jerk is reduced and the car＇s ride comfort is acceptable during shifting.