Adaptive and Robust Control for Nonlinear HVAC System

In this paper, we design adaptive and robust controller for the nonlinear MIMO heating, ventilating, and air conditioning (HVAC) system, respectively. The designed adaptive controller maintains good tracking performance for temperature and humidity ratio regardless of the slowly time-varying load changes, which are regarded as parametric uncertainties in thermal space. The robust controller considering non-parametric uncertainties is designed so as to remedy the drawback of feedback linearization technique. The obtained control system shows robustness to the non-constant thermal loads and mismatched uncertainties, respectively. Some simulation results are provided to illustrate the satisfactory control performance of the adaptive controller.