Szukana fraza: [Abstract = "Motivated by the successive projection design between two closed convex sets, the considered ILC problem can be transformed into alternating projections between multiple sets, thenwell\-defined convergence properties can be derived. Moreover, an optimal ILC design is produced for systems with non\-uniform trial lengths under the proposed framework, which is also extended to the case of input constraints. A numerical case study is given to illustrate the applicability of the new design."]