Due to its nonlinear feature, supply air temperature control systems at air handling units
using single-loop fixed gain control frequently suffer unstable response under dynamic …

In this chapter, we delve deeper into understanding modeling and control approaches for
one of the important subsystems in an intelligent building, the HVAC system. Specifically …

Actuator hunting is a widespread and often neglected problem in the HVAC field. Hunting is
typically characterized by sustained or intermittent oscillations, and can result in decreased …

Undesired oscillations (hunting) in process variables such as fan speeds, and valve and
damper openings, in heating, ventilation and air-conditioning (HVAC) systems results not …

Cascaded controllers have been shown in recent literature to significantly reduce hunting
behavior and improve the performance of a variety of HVAC systems. The cascaded …

Due to its nonlinear nature, the supply fan at air handling units with the controller tuned at
the design condition tends to be aggressive and oscillate under partial load conditions. The …

The control systems at Air handling units (AHUs) have nonlinear nature, resulting potentially
in sluggish, aggressive, or oscillatory responses under variable operation conditions. This …

Building operations consume about 40% of the total energy consumption in the US, with
Heating Ventilation and Air-Conditioning (HVAC) comprising a significant portion of it. HVAC …

Traditionally, a single-loop fixed-gain controller is applied to supply fan (SF) and cooling coil
(CC) valve controls while a fixed-damper position control is applied to outdoor air (OA) …

Variable-speed heat pump systems offer capabilities for advanced control strategies that
coordinate the operation of compressor, valve, and fans to maximize efficiency while …