温湿度解耦的模糊PID-自适应Smith控制  

Fuzzy PID Adaptive Smith Control of Temperature and Humidity Decoupling

作　　者：张盼盼[1,2] 赵钢[1,2] 

机构地区：[1]天津理工大学天津市复杂控制理论与应用重点实验室 [2]天津理工大学自动化学院,天津300384

出　　处：《化工自动化及仪表》2012年第10期1260-1264,共5页Control and Instruments in Chemical Industry

摘　　要：工业空调PID控制系统的温湿度控制具有大时滞、非线性、时变性和耦合性,难以建立精确的数学模型。提出前馈补偿解耦、模糊PID与自适应Smith预估补偿算法相结合的控制方案,以弥补常规PID控制在温湿度控制系统的不足。仿真结果表明:该方案既解决了温湿度耦合问题又提高了控制的精度和稳定性,增强了系统的鲁棒性和适应性,具有较好的动、静态性能。Considering the large time delay,nonlinearity,time-variation and coupling and the difficulty in establishing accurate mathematic model for both temperature and humidity control of industrial air conditioning systems,a control scheme that combines feed-forward compensation decoupling,fuzzy PID and adaptive Smith pre-evaluation compensation was proposed to overcome the shortcomings of the PID control on temperature and humidity.Simulation results show that this scheme can solve the coupling problem of temperature and humidity and can improve control accuracy and stability,and it can promote strong robustness of the system and has adaptability and good static-dynamic performance.

关 键 词：温湿度耦合 前馈补偿解耦 模糊PID 自适应Smith 仿真 

分 类 号：TH862+.6[机械工程—仪器科学与技术]