The invention discloses an automobile brake-by-wire system and belongs to the technical field of automobile brake systems. The system comprises a motor, a magnetorheological clutch, a planetary gear train, a planetary roller screw mechanism, a giant magnetostrictive driving mechanism, a main cylinder, a brake actuating mechanism, a brake pedal, a pedal simulator, a sensor and a controller. According to the brake system, a vacuum booster in a traditional hydraulic brake system is replaced by the motor, so that dependence on the vacuum degree of an engine is eliminated; the magneto-rheological clutch is used for effectively solving the problem of motor stalling during long-time braking; a planetary gear train is used for reducing speed and increasing torque, and the requirements for motor rotating speed and power are reduced; a planetary roller screw mechanism is used for replacing a traditional gear rack mechanism and a traditional ball screw mechanism, and the problems that the bearing capacity is insufficient and the service life is short are effectively solved. And the giant magnetostrictive driving mechanism is used as an auxiliary driving device, so that the system response time is prolonged, and meanwhile, the potential safety hazard caused by using a high-pressure energy accumulator is avoided.
一种汽车线控制动系统,属于汽车制动系统技术领域。包括电机、磁流变离合器、行星轮系、行星滚柱丝杠机构、超磁致伸缩驱动机构、主缸、制动执行机构、制动踏板和踏板模拟器、传感器和控制器。该制动系统以电机取代传统液压制动系统中的真空助力器,从而取消对发动机真空度的依赖;使用磁流变离合器有效解决在长时间制动时出现的电机堵转问题;使用行星轮系减速增扭,降低对电机转速和功率的要求;使用行星滚柱丝杠机构取代传统的齿轮齿条机构、滚珠丝杠机构,有效解决承载能力不足、寿命短的问题;使用超磁致伸缩驱动机构作为辅助驱动装置,提高系统响应时间的同时,避免了使用高压蓄能器带来的安全隐患。
Automobile brake-by-wire system
一种汽车线控制动系统
2021-07-20
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
Brake pedal simulation device, automobile brake-by-wire system and automobile
European Patent Office | 2021
|Brake actuator, drive-by-wire mechanical electronic brake system and automobile
European Patent Office | 2024
|Automobile brake-by-wire system and brake control method and device
European Patent Office | 2021
|