文档介绍：第a 期 !»!»■
域市耗遭歲€车辆喇劫系纥各力控喇方泫的
ingquan 集异常情况下不需要改装既有设备,而是通过开环
Abstract Targeting the problem of pressure control failure of 控制实现接近正常情况下的压力控制，以保证车辆
urban rail transit vehicle pneumatic braking system due to ab­ 的制动力满足制动需求，从而提高车辆制动系统常
normal acquisition of pressure signal, an improvement and op­
用制动功能的可用性。
timization of current pressure control measure using principle of
intelligentized control is proposed. When the acquisition of 1 车辆压力控制智能化的总体方案
pressure signal is normal, effective learning samples are select­
ed to learn and record the control parameters of solenoid 制动压力控制原理
valves. When the pressure signal acquisition is abnormal, ac­ 城市轨道交通车辆空气制动系统的常用制动
cording to the learned and recorded control parameters, open- 压力控制主要包括EBCU(电子制动控制单元）、充
loop control of the solenoid valves is carried out. Conclusions 气电磁阀、排气 电 磁 阀 、中继阀、压力 传 感 器 、减压
from verification by the test bench are as follows ： the intelli­ 阀等部件，其控 制 原 理 如 图 1 所示。EBCU根据常
gently improved pressure control measure can not only carry 用制动指令等信息计算出需要施加的空气制动力
out open-loop control on the pressure in the case of abnormal