Title :
A novel control method of a variable volume air conditiong system for indoor thermal environment
Author :
Li, Xuquan ; Shi, Zhigang ; Hu, Songtao
Author_Institution :
Sch. of Environ. & Municipal Eng., Qingdao Technol. Univ., Qingdao, China
Abstract :
VAV systems attempt to reduce building energy consumption while maintaining the primary role of air conditioning. A state space model of variable air volume (VAV) air-conditioning system is developed. It is found that the dynamic model is formulated as a MIMO bilinear and coupling system. To obtain good control performance, a novel decoupling control method, direct feedback linear (DFL) is applied for decoupling and linearization of the nonlinear model of VAV air-conditioning system, and a linear multi-input-multi-output model is obtained. DFL control system is designed and simulated based on SIMULINK. Simulation results for a typical plant with two zone show that DFL control system can achieve good performance in celerity, stability and other aspects. Also the potential of keeping comfort and maintaining energy optimal performance is demonstrated by this methodology.
Keywords :
HVAC; MIMO systems; bilinear systems; building management systems; energy management systems; feedback; volume control; DFL control system; HVAC; MIMO bilinear system; MIMO coupling system; SIMLINK; VAV air conditioning system; VAV state space model; building energy consumption reduction; decoupling control method; direct feedback linear; indoor thermal environment; linear multiinput multioutput model; variable air volume state space model; variable volume air conditioning control method; Air conditioning; Control system synthesis; Control systems; Energy consumption; Linear feedback control systems; MIMO; Nonlinear control systems; Nonlinear dynamical systems; State-space methods; Thermal variables control; VAV; air conditioning system; decoupling control; direct feedback linear;
Conference_Titel :
Computer Engineering and Technology (ICCET), 2010 2nd International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-6347-3
DOI :
10.1109/ICCET.2010.5485616
