Robust controller design for a boiler system subjected to model uncertainties: A comparison study

Abstract

The control problem of boiler unit, as one of the main components of power plants, is addressed. The mathematical model of a boiler system can be represented as a multiple input multiple output (MIMO) dynamical system. Inaccurate modeling of such complex nonlinear system is taken here as system uncertainty. Taking the system parametric uncertainties into account, a state-space representation of the model is derived, to be adopted in designing a robust adaptive controller. The performance of the proposed method is compared with that of a sliding mode control algorithm. Simulation studies show the effectiveness of the developed controller to achieve the desired robust performance. © 2012 Praise Worthy Prize S.r.l. All rights reserved. All rights reserved.