Robust proportional-integral control design for F-16 aircraft using a linear matrix inequality approach

Robust H
_∞
control has been applied to many different complex dynamic systems, including aircraft. However, since a full-order controller design is used in describing the regular robust output feedback, it is difficult to implement the controller in real time due to its high order. In this paper, a linear matrix equality approach is applied to design a robust proportional-integral (PI) controller for the F-16 aircraft. This approach combines advantages of classical and robust control methods. The resulting controller has a simple structure, is easy for real-time implementation, as well as theoretically guarantees closed-loop stability and performance. A robust H
_∞
output feedback controller is also designed for comparison. Simulation results validate the effectiveness of the robust PI control.