Comparison Of Lazy Controller And Constant Bandwidth Server For Temperature Control

Temperature control plays an important role in building control systems; there arenumerous methods for controlling temperature. Recently, a popular controller is thelazy controller which proposed by Truong et al. However, by applying lazy control, thetemperature is not stable since this controller simply lets temperature increase or decreaseuntil it reaches the upper or lower temperature thresholds. We seek a heater-controlschedule that can make room temperatures more stable. The Constant Bandwidth Server(CBS) was developed to handle soft real-time tasks characterized by the execution timeand period. By employing the concepts of CBS, we can derive a CBS budget and deadlinefor each room; for every budget release time, the temperature can increase/decreasefor only a bounded time with the goal of stabilizing each room's temperature. Theperformance of proposed CBS method is compared with lazy controller through severalsimulation experiments.