Multivariable control applied to temperature and humidity case study: Neonate incubator

This study presents multivariable control strategies for humidity and temperature for neonate incubator. This process is TITO system (Two Input Two Output). Identification process of incubator is the first step for design and implementation controller. An experiment method is proposed to determine the transfer function matrix, which decouples the TITO system into four independent loops. Discrete-time system transfer matrix parameters were estimated in real time by the least-squares method. Secondly we take into account couplings between outputs and we consider a decoupling controller to eliminate the strong interaction. After that we develop a generalized predictive decoupled control. At last the simulation results demonstrate the effectiveness of this proposed strategy.