Designing Locally Linear Riccati Equation (LLRE) Suboptimal Controller for an Air Handling Unit in HVAC Systems

Document Type : Original Article


Lecturer, Department of Electrical Engineering, Alborz University of Qazvin, Qazvin, Iran


Implementing an efficient control strategy for Heating, Ventilation, and Air Conditioning (HVAC) systems can lead to improved energy efficiency and thermal performance in buildings. Given the complex dynamic systems of HVAC in buildings, the effectiveness of data-based and model-based control methods is extensively explored by researchers. However, in real-world buildings, the significance of HVAC systems in close connection with energy optimization, environmental, economic, and technological challenges is a highly challenging issue. In this paper, two optimization methods, Locally Linear Riccati Equation (LLRE) and Linear Quadratic Regulator (LQR), are simulated for an air handling unit in cooling mode with the goal of energy optimization.