Robust PID control for steam superheater

The main steam system of boiler is typical time delay process. The steam temperature of superheater is an important parameter that must be kept in a certainty range when the unit plant is running. According to the characteristic of the process, the paper introduces a new type of robust PID controller that can assure stability when parameter and time delay are mismatched with the controller. Simulation result shows that the control effect is very well.