基于AMESim的电液制动系统设计与仿真研究  

Design and simulation of electro-hydraulic braking system based on AMESim

作　　者：王青云 刘二溦 安勇强 WANG Qing-yun;LIU Er-wei;AN Yong-qiang(School of Automotive and Rail Transit,Tianjin Sino-German University of Applied Sciences,Tianjin 300350,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;AECC Beijing Hangke Engine Control System Science and Technology Co.,Ltd.,Beijing 102200,China)

机构地区：[1]天津中德应用技术大学汽车与轨道交通学院,天津300350 [2]燕山大学机械工程学院,河北秦皇岛066004 [3]中国航发北京航科发动机控制系统科技有限公司,北京102200

出　　处：《机电工程》2021年第6期797-801,共5页Journal of Mechanical & Electrical Engineering

基　　金：天津市教委科研计划项目(2018KJ259,2019ZD23);天津市科技计划项目技术创新引导专项优秀科技特派员项目(19JCTPJC43600);天津市教育科学“十三五”规划课题(VE4073)。

摘　　要：流动式架桥机现有的气压制动无法实现重载下坡,针对这一问题,设计了一种新型的可应用于闭式驱动系统变负载的平衡回路,并将该回路应用于电液比例制动系统中。分析了闭式驱动系统的工作原理,对超越负载现象进行了静态特性分析;利用AMESim软件建立了制动系统的仿真模型,并对系统的动态特性进行了分析。研究结果表明:马达转向下坡工况瞬间,系统进出油口压力差降低了87.6%,转速升高了52.4%,马达具有较大的速度冲击;下坡工况,马达进出油口压力差和转速分别呈下降和上升状态;出现超越负载时,通过增大比例溢流阀的压力,可稳定马达的进出口压差和转速,满足流动式架桥机制动要求。Aiming at the problem that the existing pneumatic brake of mobile bridge erecting machine could not realize heavy load downhill,a new type of balance circuit which could be used in closed drive system with variable load was designed,and was applied to electro-hydraulic proportional braking system.The working principle of the closed drive system was analyzed,and the static characteristics of the overload phenomenon were analyzed.The simulation model of the braking system was established by AMESim software,and the dynamic characteristics of the system were analyzed.The results show that when the motor turns downhill,the pressure difference between the inlet and outlet of the motor decreases by 87.6%,and the speed increases by 52.4%.The motor has a large speed impact;the pressure difference and speed of the motor at the inlet and outlet decrease and rise respectively under the downhill condition;when the load is exceeded,by increasing,the pressure of the proportional relief valve braking requirements of bridge erecting machine,the pressure difference and speed at the inlet and outlet of the motor can be stabilized and the flow can be satisfied.

关 键 词：超越负载 电液比例控制 AMESIM仿真 行车制动 

分 类 号：TH137.7[机械工程—机械制造及自动化] U445.36[建筑科学—桥梁与隧道工程]