摘要
本文针对某重型牵引车EBS系统在整车试验过程中出现的一种EPM气压不可信故障报警,分析了故障监测原理、潜在故障类型。从整车匹配角度出发,重点分析前后前回路气源压力采集与气路控制回路气压反馈的硬件电路,提出通过软硬件滤波方法提升气源压力采集精度。经过软硬件优化,气压总线测量值的均方根误差有明显提升。经实车验证,气压不可信报警问题得到解决。
In this paper, the fault monitoring principle and potential fault type are analyzed for an EPM air pressure implausible fault alarm that appears in the vehicle test of a heavy-duty tractor’s electronically controlled brake system.From the perspective of vehicle matching, the hardware circuit of air pressure collection and air pressure feedback of the front and rear circuits is analyzed, and the accuracy of the pressure collection of the air source is improved by the software and hardware filtering methods.After the optimization, the root-mean-square error of the pneumatic measurement value has been significantly improved.Through the vehicle verification, the problem of implausible alarm of air pressure was solved.
作者
黄河
许欢
赵雷雷
苏国营
张彬
武萌雅
HUANG He;XU Huan;ZHAO Lei-lei;SU Guo-ying;ZHANG Bin;WU Meng-ya(Dechuang Weilai Automotive Technology Co.,Ltd.,Xi'an 713700,China)
出处
《汽车电器》
2022年第9期99-101,共3页
Auto Electric Parts
关键词
电控制动系统
气压不可信故障
软硬件滤波
优化验证
electronically controlled brake system
implausible alarm of air pressure
hardware and software filtering
optimization validation
