Robust H(infinity) tracking control of boiler-turbine systems

Area of Science:

• Control Systems Engineering
• Fuzzy Logic
• Nonlinear Control

Background:

• Boiler-turbine systems require precise control for stable operation.
• Existing control methods can be complex and computationally intensive.
• Fuzzy H(infinity) control offers a robust approach for nonlinear systems.

Purpose of the Study:

• To design a fuzzy H(infinity) state feedback tracking control for boiler-turbine systems.
• To develop a control strategy that simplifies the design process.
• To demonstrate the effectiveness of the proposed control method.

Main Methods:

• Modeling the boiler-turbine system using the Takagi-Sugeno fuzzy model.
• Deriving sufficient conditions for fuzzy H(infinity) nonlinear state feedback tracking control using linear matrix inequalities (LMIs).
• Applying the developed control design to an industrial boiler-turbine system.

Main Results:

• Sufficient conditions for the existence of the fuzzy H(infinity) controller were successfully derived.
• The proposed control design avoids feedback linearization and complex adaptive schemes.
• The fuzzy H(infinity) control approach proved effective and comparable to a linearized method in simulations.

Conclusions:

• The Takagi-Sugeno fuzzy model effectively represents boiler-turbine dynamics for control design.
• Fuzzy H(infinity) state feedback tracking control provides a simplified yet effective solution for boiler-turbine systems.
• The proposed method offers a practical alternative to conventional control strategies in industrial settings.