摘要
中低速磁浮车的摩擦制动系统是由制动风缸、液压制动夹钳和EP电磁控制阀组成的一个复杂电—气—液传动系统。论述了空气制动系统面向对象仿真原理:将所有气动/液压元件分解为两种气动/液压基本单元——容性单元和阻性单元的组合,然后将容性单元和阻性单元交替连接以求解方程。使用DSHplus软件建立了中低速磁浮车的摩擦制动系统的仿真模型,其中中继阀、电空转换阀和增压缸等反映实际元件的物理结构。仿真分析了中低速磁浮车在紧急制动、常用制动和缓解等过程中各部件的压力、温度等参数的变化规律。
The pneumatic brake system of medium and low speed maglev vehicle is composed with air reservoirs, hydraulic brake cylinders and control valves. An object-oriented model for pneumatic brake system is addressed in paper. All pneumatic components are treated as the assemblies of two basic elements - volume element and flow element. The volume element presents the status variables of gas such as pressure and temperature and the flow element presents the gas flowing resistance. The volume element and flow element should be connected alternately for solving the status differential equations. An object-oriented simulation model for medium and low speed maglev vehicle pneumatic brake system is built using DSHplus software,in which the physics structures of relay valve, pneumatic hydraulic exchanger are considered. Then the regulation of pressure and temperature under emergency brake and normal brake statues are computed using above model.
出处
《铁道机车车辆》
2017年第3期17-24,共8页
Railway Locomotive & Car
基金
科技部项目(215BAG19B00)
上海市青年科技启明星项目(15QB1402400)
江西省重点研发计划项目(S2016GYZDE0086)
关键词
制动
建模
仿真
气动
brake system
modeling
simulation
pneumatic system
