The invention discloses a variable transmission ratio steer-by-wire control method, which comprises a steer-by-wire system, the steer-by-wire system comprises a steering operation module, a steering execution module and a central control module, the steering operation module is mainly used for converting a steering wheel angle input by a driver into a digital signal through a sensor and transmitting the digital signal to a controller; and the road condition is transmitted to a driver through the road sensing motor. According to the four-wheel steering automobile optimal control strategy based on the drive-by-wire variable transmission ratio, the control variables of the four-wheel steering optimal controller are fed back to the variable transmission ratio controller, closed-loop control is formed, the automobile is controlled not to be in an unstable state, and the variable transmission ratio controller further controls the state of the automobile according to the change of the automobile speed. And the automobile is in an ideal steering state. The four-wheel steering optimal controller not only controls the yaw velocity of the automobile, but also controls the side slip angle of the mass center of the automobile to be basically zero, so that the driving posture of the automobile body is ensured.
本发明公开了一种可变传动比的线控转向控制方法,包括:线控转向系统,所述线控转向系统包括转向操作模块、转向执行模块、中央控制模块,所述转向操作模块主要将驾驶员输入的方向盘转角通过传感器转换成数字信号传递给控制器,并通过路感电机将路面情况传递给驾驶者。本发明提出基于线控变传动比的四轮转向汽车最优控制策略,通过反馈四轮转向最优控制器控制变量给变传动比控制器,形成闭环控制,控制车辆不会处于失稳状态,变传动比控制器还根据车速变化来控制车辆状态,使汽车处于理想转向状态。四轮转向最优控制器不仅控制汽车横摆角速度的大小,而且控制汽车质心侧偏角基本为零,保证行驶车身姿态。
Steer-by-wire control method with variable transmission ratio
一种可变传动比的线控转向控制方法
2022-08-23
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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