TY - JOUR
T1 - Adaptive fuzzy multivariable controller design based on genetic algorithm for an air handling unit
AU - Khan, Muhammad Waqas
AU - Choudhry, Mohammad Ahmad
AU - Zeeshan, Muhammad
AU - Ali, Ahsan
PY - 2015/3/1
Y1 - 2015/3/1
N2 - In HVAC (Heating, Ventilation and Air Conditioning systems, effective thermal management is required because energy and operation costs of buildings are directly influenced by how well an air-conditioning system performs. HVAC systems are typically nonlinear time varying with disturbances, where conventional PID controllers may trade-off between stability and rise time. To overcome this limitation, a Genetic Algorithm based AFLC (Adaptive Fuzzy Logic Controller design has been proposed for the multivariable control of temperature and humidity of a typical AHU (air handling unit by manipulating valve positions to adjust the water and steam flow rates. Modulating equal percentage Globe valves for chilled water and steam have been modeled according to exact flow rates of water and steam. A novel method for the adaptation of FLC (Fuzzy Logic Controller by modifying FRM (Fuzzy Rule Matrix based on GA (genetic algorithm) has been proposed. This requires re-designing the complete FLC in MATLAB/Simulink whose procedure has also been proposed. The proposed adaptive controller outperforms the existing fuzzy controller in terms of steady state error, rise time and settling time.
AB - In HVAC (Heating, Ventilation and Air Conditioning systems, effective thermal management is required because energy and operation costs of buildings are directly influenced by how well an air-conditioning system performs. HVAC systems are typically nonlinear time varying with disturbances, where conventional PID controllers may trade-off between stability and rise time. To overcome this limitation, a Genetic Algorithm based AFLC (Adaptive Fuzzy Logic Controller design has been proposed for the multivariable control of temperature and humidity of a typical AHU (air handling unit by manipulating valve positions to adjust the water and steam flow rates. Modulating equal percentage Globe valves for chilled water and steam have been modeled according to exact flow rates of water and steam. A novel method for the adaptation of FLC (Fuzzy Logic Controller by modifying FRM (Fuzzy Rule Matrix based on GA (genetic algorithm) has been proposed. This requires re-designing the complete FLC in MATLAB/Simulink whose procedure has also been proposed. The proposed adaptive controller outperforms the existing fuzzy controller in terms of steady state error, rise time and settling time.
KW - Air handling unit
KW - Fuzzy logic controller
KW - Genetic algorithm
KW - HVAC
UR - http://www.scopus.com/inward/record.url?scp=84924871450&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2014.12.061
DO - 10.1016/j.energy.2014.12.061
M3 - Article
AN - SCOPUS:84924871450
SN - 0360-5442
VL - 81
SP - 477
EP - 488
JO - Energy
JF - Energy
ER -