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 twodimensional 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.