变风量空调系统末端的变论域模糊PID控制

针对目前传统PID控制对模型依赖性强,参数难以在线调整,对不确定性强的变风量(VAV)空调系统的控制快速性和准确性差的特点,提出一种变论域模糊PID控制,以提高系统的控制速度和精度,使系统具有良好的动、静态性能。在推导的变风量空调房间和末端装置数学模型的基础上进行了仿真研究。结果表明,控制系统具有很好的鲁棒性和自适应能力,可以明显提高系统的响应速率,控制器的动态结构更适用于变风量空调系统。

Changeable Discourse Fuzzy PID Control of Variable Air Volume Air-Conditioning Terminal Unit

To the problem of the traditional PID depending on model strongly,regulating parameters difficulty,having bad control capability to the variable air volume(VAV) air-conditioning system which has strongly uncertainty,a changeable discourse fuzzy PID controller is proposed.Based on developing of the VAV air-conditioning room model and terminal unit model,the simulation experiment shows that the control strategy has more excellent robust ness and adjustability.It obviously reduces control time and has better precision than traditional PID control.Its dynamic structure is more suitable to control of the VAV system.