The invention provides an electro-hydraulic brake-by-wire system which comprises a PWM, an ABS pump, a storage battery, an analog-digital converter, a switch, a power CAN controller, a whole vehicle CAN controller, a first downloading interface and a second downloading interface. According to the invention, the magnitude of the pressure sensor signal in the ABS pump can be obtained through the analog quantity signal so that the magnitude of the brake pressure can be calibrated; an ideal braking effect is achieved through closed-loop control according to the braking pressure value, meanwhile, the current vehicle speed can be obtained through the analog quantity signal, the ABS pump can be actively controlled to be switched to a pressure maintaining state according to the vehicle speed information, the working time of a motor of the ABS pump is shortened, and the working life is prolonged; and by controlling the changes of high-side power output, low-side power output and PWM power output, the state of each valve in the ABS pump and the opening degree of the linear electromagnetic valve can be controlled so that the effects of pressure boosting, pressure maintaining and pressure reducing are achieved, and the corresponding braking function is achieved according to different drive-by-wire instructions.
本发明提供一种电液线控制动系统,包括PWM,ABS泵,蓄电池,模拟数字转换器,开关,动力CAN控制器,整车CAN控制器,第一下载接口和第二下载接口,本发明,通过模拟量信号可以获取ABS泵中压力传感器信号的大小从而标定出制动压力的大小,实现根据制动压力数值的闭环控制达到理想的制动效果,同时通过模拟量信号可以获取当前车辆车速,根据车速信息可以主动控制ABS泵切换到保压状态,减少ABS泵电机工作的时间,延长工作寿命;通过控制高低边功率输出及PWM功率输出的改变,可以控制ABS泵中各阀的状态及线性电磁阀的开度大小,从而达到增压、保压、减压的效果来实现根据不同的线控指令进行相应的制动功能。
Electro-hydraulic brake-by-wire system
一种电液线控制动系统
2021-04-16
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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