Stable Model Predictive Tracking Control for Boiler-Turbine Coordinated Control System

In this paper, a stable model predictive tracking controller (SMPTC) is designed based on the piecewise linear model to control a boiler-turbine system for a wide-range operation with unmeasured state and significant disturbance or modeling mismatch. It is shown that the proposed controller is constructed by the combination of a state and disturbance observer, a steady-state targets calculator as well as a stable model predictive controller, which can be obtained efficiently by solving a set of linear matrix inequalities. The main advantage of the proposed SMPTC is that it can guarantee the stability of the closed-loop model predictive control system with input constraints, while obtaining an offset-free tracking performance in an optimal way. Simulation results demonstrate the advantage and effectiveness of the proposed controller.