电液复合制动系统踏板感觉及其影响因素  

Brake pedal feeling and its influencing factors for electro-hydraulic brake system

作　　者：刘杨[1,2] 孙泽昌[1,2] 冀文斌[1,2] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804 [2]同济大学汽车学院,上海201804

出　　处：《吉林大学学报（工学版）》2015年第4期1049-1055,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：'973'国家重点基础研究发展计划项目(2011CB711202)

摘　　要：针对采用一体式制动主缸开发的电液复合制动系统,分析了系统正常和失效模式下踏板力的传递路径,研究了不同模式下踏板感觉及其影响因素。设计了组合弹簧式踏板感觉模拟器,并利用AMESim建立了系统不同工作模式的简化模型;仿真分析了活塞阻尼系数、推杆回位弹簧预紧力、电磁阀最大通流面积和助力比等参数对踏板力-行程曲线的影响;台架试验表明,正常模式和失效模式下踏板力-行程滞回损失分别为11.5%和15.3%,制动踏板特性满足设计需求。For the proposed electro-hydraulic brake system based on an integrated master cylinder, the pedal force transmission paths were analyzed under normal and failure operation modes. The pedal feeling and its influence factors were investigated. A pedal feeling simulator was designed with cluster springs, and simplified models under different operation modes were established using AMESim. The parameters, such as the piston damping coefficient, which affect the pedal force-stroke curve, the pedal rod return spring preload force, solenoid valve flow area and booster ratio, were studied by simulation. Bench test results show that the brake pedal characteristics could meet the design requirements, and the pedal force-stroke hysteresis losses are 11.5~ for normal mode and 15.3o/oo for failure mode, respectively.

关 键 词：车辆工程 电液复合制动系统 踏板感觉 滞回损失 

分 类 号：U463.5[机械工程—车辆工程]