Stability and convergence rate analysis of continuous-time delay-difference systems with both point and distributed delays

Qianqian Zhang, Zhao-Yan Li and Bin Zhou

International Journal of Systems Science, 2025, vol. 56, issue 3, 434-449

Abstract: This paper studies the exponential stability and convergence rate analysis of continuous-time delay-difference systems. Firstly, stability and convergence rate analysis of delay-difference systems with both point delays and distributed delays having exponential integral kernels are studied by using the weighted Lyapunov–Krasovskii functionals (LKFs) approach and the state transformation approach, respectively. Different sufficient stability conditions expressed by linear matrix inequalities (LMIs) are presented. Secondly, as a particular case, LMIs based conditions and spectral radius based conditions are given to ensure the exponential stability with a guaranteed convergence rate for delay-difference systems with both point delays and distributed delays having constant integral kernels, respectively. Finally, numerical examples illustrate the effectiveness of the obtained results.

Date: 2025
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DOI: 10.1080/00207721.2024.2394570

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