Abstract
This article deals with the problem of delay-dependent finite-time stability (FTS) for delayed discrete-time systems with nonlinear perturbations. First, based on a Lyapunov–Krasovskii Functional, delay-dependent FTS conditions are provided by introducing some free-weighting matrices. Then, a new reduced free-matrix-based inequality is established to estimate the single summation term. The dimensions of these free matrices integral in our results are less than those obtained in the literature. This reduction in the number of variables does not mean that our method is a particular case but simply that our approach is completely different from the others and therefore our method is more effective. Thus, less conservative design conditions are obtained in this paper in terms of linear matrix inequalities (LMIs) and solved using MATLAB’s LMI toolbox to achieve the desired performance. The purpose of this paper is to derive sufficient conditions that ensure the finite-time stability of the discrete-time system. Finally, numerical examples are examined to show the advantage and effectiveness of the proposed results.
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Teresa Alvarez is funded by Agencia Estatal de Innovación, MICInn, PID2020-112871RB-C21 and PID2021-123654OB-C31.
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El Akchioui, N., El Fezazi, N., Farkous, R. et al. Finite-Time Stability for Discrete-Time Systems with Time-Varying Delays and Nonlinear Perturbations Using Relaxed Summation Inequality. Iran J Sci Technol Trans Electr Eng 48, 433–443 (2024). https://doi.org/10.1007/s40998-023-00669-8
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DOI: https://doi.org/10.1007/s40998-023-00669-8