客车气制动系统输出压力模型的研究  

Model of Output Pressure for Air-brake System in Passenger Car

作　　者：朱蔷[1] 陆艺[1] 郭斌[1] 罗哉 

机构地区：[1]中国计量学院、计量测试工程学院汽车零部件检测试验室,浙江杭州310018 [2]杭州沃镭科技有限公司,浙江杭州310018

出　　处：《液压与气动》2015年第2期27-30,65,共5页Chinese Hydraulics & Pneumatics

基　　金：国家质检总局公益行业科研专项(201310284)

摘　　要：通过对气制动系统制动过程的分析,针对气制动系统中制动总阀及制动气室的工作状态,引入了物理建模的方法,建立了正常状态下的客车气压制动系统制动气室输出压力特性的模型。为验证该模型的准确性,采用四阶龙格-库塔方法,对所建立的模型进行了计算仿真,得到制动气室的输出压力曲线。与此同时,在与仿真相同的条件下利用整车气制动模拟试验台对制动气室的输出压力进行了测试,仿真结果与试验结果吻合性较好,表明所建立的客车气制动系统制动气室的输出压力模型能够较准确地描述制动气室输出压力变化特性,为气制动系统的理论研究提供了依据。Through analysis of the air-brake system during braking,the method of physical modeling is introduced to study the working condition of the brake valve and the brake chamber in the air brake system. And then,a model of the brake chamber output pressure characteristic for the passenger car air-brake system is built. In order to verify the model,we implement the simulation by using the fourth order Runge-Kutta methods and obtain the transient pressure of the brake chamber. An experiment based on the vehicle air brake test bench is also conducted under the same conditions as the simulation. The pressure profiles of the simulation and the experiment are in good agreement,which indicates the model could describe the output pressure variation characteristic of brake chamber accurately.

关 键 词：制动总阀 制动气室 建模 仿真 

分 类 号：TH138[机械工程—机械制造及自动化] TB126[理学—工程力学]