摘要
列车气制动过程中的EP(电-空)转换完成电气指令到空气压力的转换,是实现精确制动的关键环节。EP转换具有非线性、时变和多因素干扰等特点,但它的实时性要求又很高,导致控制难度较大。采用环境适应能力更强的高速开关电磁阀组成EP转换单元,提出一种结合Bang-Bang控制思想与模糊PID(比例积分微分)控制的复合控制器,能自动适应不同工况。建立了EP转换的数学模型并进行分析,并构建了制动试验台进行大量试验。采用复合控制方法和高速开关阀的EP系统具有转换精度高,响应速度快等优点,还能延长器件的使用寿命。
The Electric-Pneumatic （EP） transition trans- forms the electric signal into pressure air accordingly which is the key of the brake system. But the EP transition is non- linear, time-varying and easy to be disturbed, which make the EP transition control difficult. An EP transition unit with high-speed valves is designed which utilizes the bang- bang control method and fuzzy PID control. This compound control method makes the unit self-adaptive to different work conditions. Then the mathematic model of the elec- tric-pneumatic transmission is built and analyzed. A series of tests indicates the compound controller makes the EP trans- fer fast-response and high accurate. Furthermore, the serv- ice life of the high speed on-off valves can be prolonged greatly.
出处
《城市轨道交通研究》
北大核心
2013年第2期76-80,共5页
Urban Mass Transit
基金
上海市科委重大攻关项目(061111009)
关键词
列车制动
电空转换
模糊PID控制
train brake
electro-pneumatic transition
fuzzy PID control
