融合自识别功能的商用车线控制动系统

针对传统线控制动系统缺乏自适应识别车辆特征信息和硬件模块连接数量的问题,本文研究一种融合自识别功能的线控制动系统,包括多个压力调节阀、轮速传感器、转向角传感器和中央控制单元,通过中央控制单元自动识别制动系统硬件部件的连接状态,使得制动系统能够选择适宜的工作模式,将车辆以40km/h的速度分别在附着率为0.8和0.4的路面行驶,完成检测识别挂车是否连接在牵引车上、识别传动轴上轮速传感器和压力调节模块和识别转向角传感器和横摆率传感器的实车测试。结果表明,当车辆采取紧急制动时,带有自识别功能的线控制动系统利用中央控制单元能够通过CAN总线检测到轮速传感器、压力调节模块、转向角传感器等硬件的连接状态,并将CAN通讯信号反馈到制动总阀,为车辆提供有效的制动力,并且系统在高附着路面的调节能力优于在低附着路面的表现。

Research on Commercial Vehicle Brake-by-wire System with Self-identification Function

Aiming at the problem of traditional brake-by-wire systems that lack adaptive identification of vehicle feature information and the number of hardware module connections, this paper studies a brake-by-wire system with self-recognition functions, including multiple pressure regulating valves, wheel speed sensors, steering angle sensors and The central control unit automatically recognizes the connection status of the hardware components of the brake system through the central control unit, so that the brake system can select an appropriate working mode, and drive the vehicle at a speed of 40km/h on roads with adhesion rates of 0.8 and 0.4, respectively. Complete the actual vehicle test to detect whether the trailer is connected to the tractor, identify the wheel speed sensor and pressure adjustment module on the drive shaft, and identify the steering angle sensor and yaw rate sensor. The results show that when the vehicle takes emergency braking, the brake-by-wire system with self-recognition function can detect the connection status of the wheel speed sensor, pressure adjustment module, steering angle sensor and other hardware through the CAN bus using the central control unit. The CAN communication signal is fed back to the brake master valve to provide effective braking force for the vehicle, and the system"s adjustment ability on high-adhesion roads is better than its performance on low-adhesion roads