The invention discloses a composite braking hysteresis compensation method for an extended-range electric drive axle semitrailer, and belongs to the field of electric composite braking control of hybrid power vehicles. According to the method, in a composite braking mode combining regenerative braking and pneumatic braking, the situation that the instantaneous braking torque of the semitrailer is insufficient is compensated through the motor compensation torque and the pneumatic compensation torque. According to the braking intention of a driver and the braking force distribution strategy of composite braking, the ideal motor braking torque and the ideal pneumatic braking torque needed by the trailer part are obtained, the decision of a compensation mode is made in the braking compensation process, and the MPC is adopted for conducting optimization control over the motor compensation torque and the pneumatic compensation torque in the braking process. According to the method, the problem of difference between the actual braking torque and the required braking torque caused by air braking torque delay is solved, the phenomenon that the transitional torque is insufficient when regenerative braking exits is also solved, and a better braking feeling is obtained.
本发明公开了一种增程式电驱桥半挂车的复合制动迟滞补偿方法,属于混合动力车辆电气复合制动控制领域。本发明在再生制动与气制动相结合的复合制动模式下,通过电机补偿转矩和气动补偿转矩,补偿半挂车瞬时制动转矩不足的情况。根据驾驶员的制动意图以及复合制动的制动力分配策略,得出挂车部分所需的理想电机制动转矩和气动制动转矩,在制动补偿过程中进行补偿模式的决策,本方法采用MPC控制器进行制动过程中电机补偿转矩与气动补偿转矩进行优化控制。本发明既解决了气制动扭矩延迟而导致的实际制动扭矩与所需制动扭矩之间的差异的问题,又解决了再生制动退出时过渡性转矩不足的现象,并获得更好的制动感觉。
Composite braking hysteresis compensation method for extended-range electric drive axle semitrailer
一种增程式电驱桥半挂车的复合制动迟滞补偿方法
2024-01-05
Patent
Elektronische Ressource
Chinesisch
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