The invention relates to a novel brake backup method comprising the steps that: when a vehicle decelerates, an electric power-assisted brake system sends an application message comprising a pedal travel signal to a brake controller; if the electric power-assisted braking system fails, the application message further comprises a failure signal; if the brake controller receives the application message including the failure signal, the corresponding dragging torque is calculated according to the pedal travel signal, and a signal is sent to the motor controller to request the dragging torque to brake; and if the brake controller cannot receive the application message for N seconds, a pedal signal is obtained to judge whether a pedal is stepped on or not, and if the pedal is stepped on, a signal is sent to the motor controller to request a preset dragging torque for braking, wherein N is a positive number. According to the brake backup method disclosed by the invention, the vehicle only provided with the ABS and the electric power-assisted brake system can also perform active pressure building brake when the electric power-assisted brake system fails.
本发明涉及一种新型制动备份方法,包括:电动助力制动系统在车辆减速时,向制动控制器发送包括踏板行程信号的应用报文;如果电动助力制动系统失效,应用报文中还包括失效信号;制动控制器如果接收到包括失效信号的应用报文,则根据踏板行程信号计算对应的拖滞扭矩,并向电机控制器发送信号请求该拖滞扭矩制动;制动控制器如果持续时间N秒接收不到应用报文,则获取踏板信号判断踏板是否踩下,若踏板踩下则向电机控制器发送信号请求预设的拖滞扭矩制动;其中N为正数。本发明的制动备份方法,仅配置ABS和电动助力制动系统的车辆在电动助力制动系统失效时也可以进行主动建压制动。
Novel brake backup method and system
一种新型制动备份方法及系统
2022-01-28
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |