Self-tuning PI control for a boiler control system

Abstract

This paper proposes a new design method for a drum boiler system, which is a benchmark problem for PID control. The boiler is a multi-input multi-output (MIMO) system with interference, but it is divided into independent single-input single-output (SISO) systems. In the proposed method, interference is considered a disturbance, and a controller is designed for each system. Because the controlled plants are time-varying systems, the control system is adaptively updated based on generalized minimum variance control (GMVC).