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Robust iterative learning control design for uncertain time-delay systems based on a performance index

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4 Author(s)
D. Meng ; Seventh Research Division, Beihang University (BUAA) ; Y. Jia ; J. Du ; F. Yu

Here the authors concerned with robust iterative learning control (ILC) for uncertain time-delay systems. They demonstrate that the design of a robust ILC is straightforward based on a performance index for the error system. The ILC algorithms under consideration are rather simple. They show that after the two-dimensional analysis of ILC, a Lyapunov-like approach can be used to directly obtain a stable algorithm that achieves monotonic convergence of the control input error. Sufficient stability conditions are provided in terms of linear matrix inequalities, which can determine learning gains as well. They also show that the Lyapunov-like approach can be applied to design robust ILC for uncertain systems with time-varying delay or multiple time delays. Numerical simulation results are presented to illustrate the effectiveness of the proposed ILC approach.

Published in:

IET Control Theory & Applications  (Volume:4 ,  Issue: 5 )