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双离合器(DCT)已被广泛运用于乘用车动力传动系统。然而,DCT系统中的低阻尼限制了对换挡过程中振动响应的衰减能力。扭转阻尼器常被用于被动地抑制传动系统的振动。本文阐述了一种新的抑制传动系瞬态响应的主动控制方法,该方法基于在换挡过程及换挡后主动控制发动机输出转矩来减少系统的振动响应。而对电动车和混合动力车则通过控制电机输出力矩来达到抑制传动系统的瞬态响应。由于没有因发动机点火产生的延迟,这种振动控制效果显著。仿真结果表明,发动机和电机控制都能被用来抑制动力传动系统换挡后的瞬态响应,并且电机控制的效果更优。
Dual clutch (DCT) has been widely used in passenger car powertrain. However, the low damping in the DCT system limits the ability of the vibration response to attenuate during shifting. Torsional dampers are often used to passively dampen vibrations in the driveline. In this paper, a new active control method to restrain the transient response of the powertrain is described. The method reduces the vibration response of the system by actively controlling the output torque of the engine after the shifting process and shifting. For electric vehicles and hybrids, the output torque of the motor is controlled to suppress the transient response of the transmission system. Since there is no delay due to engine ignition, this vibration control effect is significant. The simulation results show that both engine and motor control can be used to suppress the transient response of the powertrain after gear shifting, and the motor control is more effective.