期刊
IEEE-CAA JOURNAL OF AUTOMATICA SINICA
卷 8, 期 5, 页码 1001-1014出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JAS.2021.1003973
关键词
Adaptive iterative learning control (ILC); nonlinear time-varying system; robust convergence; substochastic matrix
资金
- National Natural Science Foundation of China [61873013, 61922007]
This paper introduces an optimization-based method for designing and analyzing adaptive ILC, which achieves robust tracking tasks while ensuring the boundedness of system trajectories and estimated parameters. The effectiveness of the proposed method is demonstrated through two simulation tests, especially for an injection molding process.
This paper aims to solve the robust iterative learning control (ILC) problems for nonlinear time-varying systems in the presence of nonrepetitive uncertainties. A new optimization-based method is proposed to design and analyze adaptive ILC, for which robust convergence analysis via a contraction mapping approach is realized by leveraging properties of substochastic matrices. It is shown that robust tracking tasks can be realized for optimization-based adaptive ILC, where the boundedness of system trajectories and estimated parameters can be ensured, regardless of unknown time-varying nonlinearities and nonrepetitive uncertainties. Two simulation tests, especially implemented for an injection molding process, demonstrate the effectiveness of our robust optimization-based ILC results.
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