Title :
Research of Temperature and Humidity Decoupling Control for Central Air-Conditioning System
Author :
Zhao, Xianmei ; Tang, Jie ; Chen, Dongxian
Author_Institution :
Guangdong Polytech. Normal Univ., Guangzhou, China
Abstract :
The temperature and humidity decoupling control method was presented in this paper to resolve the coupling problem between temperature and humidify in central air-conditioning variable dew point control system. By introducing absolute humidity as an intermediate variable to control the machine dew point, temperature and humidify of system can be decoupled. Two input and two output transfer function model was established by combining the theoretical analysis with the data analysis of experiment,and a control system consisting of a feed forward compensation decouple control and PID control was designed. The simulation based on MATLAB results demonstrated that this method is effective,and is also effective to control temperature and humidity system.
Keywords :
air conditioning; data analysis; humidity control; mathematics computing; temperature control; three-term control; transfer functions; MATLAB simulation; PID control; air-conditioning variable dew point control system; central air-conditioning system; data analysis; feed forward compensation decouple control; humidity decoupling control; temperature decoupling control; theoretical analysis; two input transfer function model; two output transfer function model; Central air conditioning; Centralized control; Control system synthesis; Control systems; Data analysis; Feeds; Humidity control; Mathematical model; Temperature control; Transfer functions; PID control; central air-conditioning system; decoupling control; temperature and humidity control; transfer function model;
Conference_Titel :
Intelligent Human-Machine Systems and Cybernetics, 2009. IHMSC '09. International Conference on
Conference_Location :
Hangzhou, Zhejiang
Print_ISBN :
978-0-7695-3752-8
DOI :
10.1109/IHMSC.2009.224
