%0 Journal Article %T Forgetting Factor Nonlinear Functional Analysis for Iterative Learning System with Time-Varying Disturbances and Unknown Uncertain %J - %D 2017 %X This paper focuses on the iterative learning tracking control problem for a class of nonlinear system with time-varying disturbances. First, because of the mismatches in time-varying disturbances functions, a high-order feed-forward iterative learning control (ILC) is employed to change the original system into an iterative system. Secondly, a variable forgetting factor is developed to stabilize the system. Based on the feed-forward iterative learning controller, a memory controller is constructed for the nonlinear system. By choosing a new variable forgetting factor, we show that the designed continuous adaptive controller makes the solutions of the closed-loop system convergent to a ball exponentially. Finally, a numerical example is given to show the feasibility and effectiveness of the proposed method. %K Feed-Forward Control %K Iterative Learning Control Algorithm %K Nonlinear Systems %K Time-Varying Disturbances %K Forgetting Factor %U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=134&doi=10.11648/j.acis.20170503.11