Stability and analysis of iterative learning system using frequency domain method

This paper adopts a reinforcement learning control using the frequency domain method for a SISO system with friction and input saturation process. The proposed method, which is based on two-dimensional system theory, investigates the robust stability criteria of the SISO iterative learning control system ({ILCS}) using frequency domain methods. The restrictive conditions for the stability of the {ILCS} are also derived. A design procedure for the {ILCS} is outlined. A numerical simulation example is given to demonstrate the utilization of obtained results.