The invention relates to a brake pedal feeling simulation device and method based on a controllable variable stiffness hydraulic cylinder, and the device comprises a simulation cylinder assembly, a simulation cylinder pressure sensor and a three-way joint, and the other two ends of the three-way joint are respectively connected with a brake main cylinder and a hydraulic adjustment unit through a main cylinder oil pipe, the simulation cylinder assembly and the adjusting motor are respectively and mechanically connected with the speed reducing mechanism assembly; the simulation cylinder assemblyis an actuating mechanism for adjusting the hydraulic pressure of pedal feeling; the adjusting motor serves as a power source to provide power with equivalent rigidity for a series spring piston system of the adjusting simulation cylinder assembly; and the speed reducing mechanism assembly is used for reducing the speed and increasing the torque, and transmitting the adjusting driving force of the simulation cylinder assembly output by the adjusting motor to the simulation cylinder assembly. By comparing pedal feeling characteristic MAP data at different pedal speeds and combining feedback information such as push rod speed and hydraulic pressure deviation, movement of the adjusting motor is controlled, feedback tracking control over expected main cylinder pressure is achieved, and the brake pedal feeling in the dynamic process is accurately simulated.
本发明涉及一种基于可控变刚度液压缸的制动踏板感觉模拟装置及方法,其包括的模拟缸总成、模拟缸压力传感器与三通接头依次连接,三通接头的另外两端分别通过主缸油管连接制动主缸和液压调节单元;模拟缸总成和调节电机分别与减速机构总成机械连接;模拟缸总成为调节踏板感觉液压力的执行机构;调节电机作为动力源为调节模拟缸总成的串联弹簧活塞系统提供等效刚度的动力;减速机构总成用于减速增矩,将调节电机输出的模拟缸总成的调节驱动力传输至模拟缸总成。本发明通过对比不同踏板速度下的踏板感觉特性MAP数据,结合推杆速度和液压力偏差等反馈信息控制所述调节电机的运动,实现期望主缸压力的反馈跟踪控制,准确地模拟动态过程中的制动踏板感觉。
Brake pedal feeling simulation device and method based on controllable variable stiffness hydraulic cylinder
基于可控变刚度液压缸的制动踏板感觉模拟装置及方法
2021-01-12
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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