Abstract
This paper aims to establish a data-based control design framework for linear iterative learning control (ILC) systems subject to disturbances. Through the proper selection of the test inputs, some output data are collected to exploit two trackability criteria of the desired reference for ILC systems such that the implementability of the perfect tracking objective is ensured, where the persistent excitation condition may not be imposed. Furthermore, two classes of data-based ILC updating laws are presented by incorporating the design idea of the observer, for which the collected input and output data are only leveraged. It is shown that given any trackable desired reference, the perfect tracking objective can be realized for ILC systems under the proposed data-based ILC updating laws in the absence of any model information.
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