... instances, then the system can be very well controlled. There are many sources, which influence the output of the system. Thus, if the output y n (k+1) (n = 1,2,3) is not corrected, the error ... for comfort. The details of the geometry of the room and the HVAC system based on displacement ventilation for cooling the room are taken from Reference [1]. The control of this system is difficult ... difficult since the HVAC system has no heater, which means that we can only cool the room, but not heat it. In addition, the time delay in heat exchange also exists in the system. All of these factors...