Exponential Stability of Nonlinear Differential Repetitive Processes with Applications to Iterative Learning Control
Abstract
This paper studies exponential stability properties of a class of two-dimensional (2D) systems called differential repetitive processes (DRPs). Since a distinguishing feature of DRPs is that the problem domain is bounded in the "time" direction, the notion of stability to be evaluated does not require the nonlinear system defining a DRP to be stable in the typical sense. In particular, we study a notion of exponential stability along the discrete iteration dimension of the 2D dynamics, which requires the boundary data for the differential pass dynamics to converge to zero as the iterations evolve. Our main contribution is to show, under standard regularity assumptions, that exponential stability of a DRP is equivalent to that of its linearized dynamics. In turn, exponential stability of this linearization can be readily verified by a spectral radius condition. The application of this result to Picard iterations and iterative learning control (ILC) is discussed. Theoretical findings are supported by a numerical simulation of an ILC algorithm.
Cite
@article{arxiv.1701.05665,
title = {Exponential Stability of Nonlinear Differential Repetitive Processes with Applications to Iterative Learning Control},
author = {Berk Altın and Kira Barton},
journal= {arXiv preprint arXiv:1701.05665},
year = {2017}
}
Comments
13 pages, 3 figures. Technical report accompanying "Exponential Stability of Nonlinear Differential Repetitive Processes with Applications to Iterative Learning Control" published in Automatica Volume 81, July 2017 (Pages 369-376, URL: http://www.sciencedirect.com/science/article/pii/S0005109817301772)