The invention provides a rotating speed acquisition system and method suitable for an unmanned position sensing hydrogen energy automobile. The method comprises the steps that a driver conducts vehicle power-on starting; the VCU collects pulse signal information of the counting wheel speed sensor; the VCU vehicle control unit imports vehicle state matching information, wherein the vehicle state matching information comprises the number N of convex teeth of one circle of a vehicle tire and the perimeter L of one circle of the vehicle tire; the VCU selects driving driving modes according to the vehicle driving intention, and different driving driving modes correspond to different counter time bases and the counting difference of each time base; the counter time cardinal numbers corresponding to the different driving modes and the counting difference are substituted into an algorithm, the real-time vehicle speed v in the different driving modes is obtained, and the real-time vehicle speed V in the different driving modes is sent. The method has high stability and reliability. Meanwhile, the instantaneity of rotating speed collection is adjustable, the method can be suitable for occasions with the high requirement for vehicle speed control precision, and the method is suitable for large-scale popularization and application. Unmanned driving position sensing, constant-speed cruising and the like are achieved.
本发明提供一种适用无人驾驶位置感知氢能汽车转速采集系统及方法,包括驾驶员进行车辆上电启动;整车控制器VCU采集计数轮速传感器脉冲信号信息;VCU整车控制器导入车辆状态匹配信息,包括车子轮胎一周的凸齿数N和车子轮胎一周的周长L;VCU根据车辆驾驶意图,选择驾驶驱动模式,不同的驾驶驱动模式对应不同的计数器时间基数以及每段时间基数的计数差;将不同驱动模式对应的计数器时间基数以及计数差带入到算法中,得到不同驱动模式下的实时车速v,发送不同模式的实时车速V,本发明具有很高的稳定性和可靠性,同时转速采集的瞬时性可调,可适用于对车速控制精度要求较高的场合,无人驾驶位置感知,定速巡航等。
Rotating speed acquisition system and method suitable for unmanned position sensing hydrogen energy automobile
一种适用无人驾驶位置感知氢能汽车转速采集系统及方法
2021-07-23
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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