机电复合传动换挡模式切换过程同步控制方法

Synchronous Control Method for Shift Mode Switching Process of Electromechanical Compound Transmission

如果在汽车换挡模式切换时,未能换挡模式下马斜盘角与角速度的关系,忽略对小信号的线性化处理,发动机与电机的转速、转矩效率将会降低,受到冲击度较高,对此,提出机电复合传动换挡模式切换过程同步控制方法。该方法首先对机电复合传动系统中的四种换挡模式进行转速、转矩及切换过程分析,对切换过程中的输入转速变化进行抑制;引入转速同步控制方法计算换挡模式核心元件的转矩系数,应用切换过程的转矩同步控制方法优化制动装置、主(从)动盘的角速度差以及换挡模式的切换时间,完成换挡模式切换过程的同步控制。实验结果表明,切换过程中的发动机与电机的转速提高,转矩效率增强,冲击度有效降低,同步控制效果得到保证。

If the relationship between swash plate angle and angular velocity is not found and the linearization of small signal is ignored when shifting mode is switched, the speed and torque efficiency of engine and motor will be reduced and the impact degree will be high. In this paper, a synchronous control method of transmission shift mode switching based on electromechanical compound was reported. Firstly, the speed, torque and switching process of the four shift modes in the electromechanical transmission system were investigated in detail. The variation of input speed was inhibited during switching. Secondly, the speed synchronization control method was introduced to calculate the torque coefficient of the core components in the shift mode. Then, the torque synchronization control method was applied to optimize the braking device, the angular velocity difference between the master and slave disks, and the shift mode switching time. Eventually, the synchronization control of shift mode switching process was realized. The results show that the speed of engine and motor is increased, the torque efficiency is enhanced, the impact is effectively reduced, and the synchronization control effect is guaranteed.