Robust PID Controller Design with Application to a Flight Actuator

A PID controller is proposed for robust command following of linear systems with nonlinear uncertain structure and unknown disturbances. The realizability of the controller is guaranteed by requiring the controller to be independent from the uncertainties. Sufficient conditions for the problem to have a solution are established. The application of a robust PID controller for a flight actuator is also presented. Simulation results are used to illustrate the controller´s performance.