The invention discloses a front and rear wheel steer-by-wire control method and system, and relates to the technical field of vehicle steering control, and the front and rear wheel steer-by-wire control system comprises a front wheel steering system and a rear wheel steering system. According to the front and rear wheel steer-by-wire control method, the vehicle speed, front wheel steering input and the steering state before a rear wheel steering fault serve as parameters, when the rear wheel steering fault occurs, a proper control strategy is executed on front and rear wheel steer-by-wire, and the controllability during the fault is improved in a mode that front wheels execute control compensation; the lateral acceleration change caused by the slow centering or locking strategy after the rear wheel steering enters the safe state is compensated, the vehicle deviation amplitude is reduced, the controllability is improved, the non-redundant rear wheel steering can meet the function safety requirement of the whole vehicle, and the cost is reduced.
本发明公开了一种前后轮线控转向的控制方法及系统,涉及车辆转向控制技术领域,所述前后轮线控转向的控制系统包括:前轮转向系统和后轮转向系统,所述前后轮线控转向的控制方法以车速、前轮转向输入、后轮转向故障前的转向状态为参数,当后轮转向出现故障时,对前后轮线控转向执行合适的控制策略,前轮执行控制补偿的方式提升故障时的可控度,补偿由于后轮转向进入安全状态后执行缓慢回中或锁死策略带来的侧向加速度变化,减小车辆跑偏幅度,提高可控度,使非冗余后轮转向可满足整车功能安全要求,降低成本。
Front and rear wheel steer-by-wire control method and system
一种前后轮线控转向的控制方法及系统
09.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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