温室大棚温湿度模糊解耦控制系统设计与仿真  

Design and Emulation on Fuzzy Decoupling Control System of Temperature and Humidity for Greenhouse

作　　者：卢佩[1] 刘效勇[2] 

机构地区：[1]石河子大学计算机科学与技术学院,新疆石河子832000 [2]石河子大学师范学院物理系,新疆石河子832000

出　　处：《农机化研究》2010年第1期44-47,共4页Journal of Agricultural Mechanization Research

基　　金：石河子大学科研基金项目(RCZX200756)

摘　　要：温室环境系统是一个多变量、非线性、时变和滞后的系统,各变量之间具有耦合关系,很难建立精确的数学模型。其中,温度和湿度的变化是最基本的因子,对农业作物影响最为显著。为此,采用模糊控制方法,通过建立模糊控制系统模型和对模糊控制器的设计,引入解耦参数,实现了该系统的温湿度解耦控制,使系统的温湿度控制精度大大提高。实验结果表明:当温室温湿度设定值分别为20℃和70%时,温湿度变化超调量较小,控制过程比较平稳,系统环境达到了作物生长的需求。In view of greenhouse system that is a multivariable, non linearity, time - varying and hysteretic system, and there are coupling relations between every variable. It is very difficult to establish precise mathematic model. Among them, the change of temperature and humidity is the most basic factor and it is the most significant impact to the crops＂ growing. So, through using the method of fuzzy control, establishing fuzzy control system model, introducing the decoupling parameters and designing on fuzzy controller, temperature and humidity decoupling control algorithm is implemented and the control accuracy of system is improved greatly. Experimental result shows that when the temperature and humidity settings were 20℃ and 70%, the temperature and humidity changed in a smaller overshoot, the control process was relatively stable, and the system had the best environment for crop growth.

关 键 词：解耦 模糊控制 隶属函数 温室 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]