空调列车车厢内CO₂浓度的模糊控制

来源期刊：中南大学学报(自然科学版)2003年第6期

论文作者：陈焕新 杨培志 黄素逸

文章页码：652 - 656

关键词：空调列车; CO₂浓度;模糊控制

Key words：air-conditioned train; CO₂ concentration; fuzzy control

摘    要：以列车车厢内CO₂浓度为控制对象,实现对新风量的控制.在车内CO₂浓度控制系统中,应用模糊控制理论,将车内CO₂浓度与设定浓度之间的误差以及误差变化率作为控制系统的输入量,新风阀门开度的变化作为输出量,并建立各输入、输出量的模糊集、论域、隶属函数以及模糊控制规则;确定列车硬座车厢内CO₂浓度与时间、新风量之间的函数关系式,并应用所建立的模糊控制系统对列车硬座车厢内的CO₂浓度进行模糊控制仿真实验,研究新风量与车厢内CO₂浓度之间的变化关系.研究结果表明:运用模糊控制理论可对车内CO₂浓度实现稳定、可靠的控制,为改善车厢内空气品质提供了一种新方法.

Abstract: This paper takes the CO₂ concentration of train compartment as the control object in order to control fresh air.Applying fuzzy control theory to CO₂ concentration control system, taking the error between actual CO₂ concentration and fixed CO₂ concentration and error variety as input variables, the variety of fresh air valve as output variable, corresponding fuzzy collections, subjection function, scope and fuzzy control rules are established. The formula of CO₂ concentration, time and fresh air quantity in train compartment is determined, and using the established fuzzy control system, therule about the variety of CO₂ concentration and fresh air is studied. Simulation results show that reliable control can be obtained by applying fuzzy control theory, and a newmethod for improving indoor air quality is provided.