The invention relates to the technical field of auxiliary driving control of an electric two-wheeled vehicle, and provides an anti-sideslip control method and system for an electric vehicle, a corresponding processing mechanism is set according to vehicle sideslip reasons in real situations, and when vehicle steering is detected, a first constraint condition is substituted according to road surface parameters, running speed and vehicle body parameters of a current road, and an anti-sideslip control result is obtained. The steering angle threshold value at the current speed is obtained for driving control, so that sideslip accidents caused by large-angle steering can be effectively avoided; in addition, when the vehicle is braked, whether the running speed of the vehicle meets a second constraint condition or not is monitored all the time so that rollover caused by wheel locking can be avoided, the derating output strategy of the target braking force is obtained by correcting the initial braking force, and tire locking can be prevented and timely braking can be achieved on the premise that the speed reduction requirement is met in the early stage of vehicle speed reduction; therefore, the form safety and the control reliability of the electric two-wheeled vehicle are improved.
本发明涉及电动二轮车的辅助驾驶控制技术领域,提供一种电动车防侧滑控制方法及系统,针对现实情况中车辆侧滑原因,设置了对应的处理机制,在检测到车辆转向时,根据当前道路的路面参数和行驶速度、车身参数,代入第一约束条件,获取当前速度下的转向角阈值进行行驶控制,可有效避免大角度转向产生的侧滑事故;另外在车辆制动时,时刻监测车辆的行驶速度是否满足第二约束条件,以避免车轮抱死产生侧翻,而通过修正初始刹车制动力得到目标制动力的降额输出策略,可在车辆减速前期满足减速需求的前提下,防止轮胎抱死并实现及时制动;双管齐下,从而提高电动二轮车的形式安全性和控制可靠性。
Anti-sideslip control method and system for electric vehicle
一种电动车防侧滑控制方法及系统
2023-05-30
Patent
Electronic Resource
Chinese
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