carpathian_2026_42_1_153-170

Finite-Time H∞ Control for Conformable Fractional-Order Nonlinear Systems with Time Delays


Nguyen Thi Hue, Mai Viet Thuan, Nguyen Huu Sau, Nguyen Thi Thanh Huyen


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abstract_carpathian_2026_42_1_153-170

https://doi.org/10.37193/CJM.2026.01.11

 

Published on 17 October 2025

Abstract.

This paper studies finite-time H_\infty control for conformable fractional-order nonlinear systems with time delays. Unlike Caputo derivatives, conformable derivatives lack memory effects, affecting stability. Existing work on H_\infty control mainly covers integer-order and Caputo fractional systems, with little focus on conformable systems with delays. Using Lyapunov methods and the conformable Laplace transform, we derive linear matrix inequalities (LMIs) that ensure finite-time stability and robust H_\infty performance. A state-feedback control law is designed to improve system robustness. Numerical simulations validate the approach against disturbances and delays.