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Papers by zahra aghayan

$Research paper thumbnail of Tracking control for a class of fractional order uncertain systems with time-delay based on composite nonlinear feedback control$

Social Science Research Network, 2022

$Research paper thumbnail of Disturbance observer-based delayed robust feedback control design for a class of uncertain variable fractional-order systems: Order-dependent and delay-dependent stability$

$Research paper thumbnail of Criteria for stability and stabilization of variable fractional-order uncertain neutral systems with time-varying delay: Delay-dependent analysis$

IEEE Transactions on Circuits and Systems II: Express Briefs

Iranian Journal of Science and Technology, Transactions of Electrical Engineering

$Research paper thumbnail of Guaranteed cost robust output feedback control design for fractional-order uncertain neutral delay systems$

Chaos, Solitons & Fractals

Entropy

In this research work, we deal with the stabilization of uncertain fractional-order neutral syste... more In this research work, we deal with the stabilization of uncertain fractional-order neutral systems with delayed input. To tackle this problem, the guaranteed cost control method is considered. The purpose is to design a proportional–differential output feedback controller to obtain a satisfactory performance. The stability of the overall system is described in terms of matrix inequalities, and the corresponding analysis is performed in the perspective of Lyapunov’s theory. Two application examples verify the analytic findings.

$Research paper thumbnail of Guaranteed cost-based feedback control design for fractional-order neutral systems with input-delayed and nonlinear perturbations$

$Research paper thumbnail of Delay-dependent robust stability analysis of uncertain fractional-order neutral systems with distributed delays and nonlinear perturbations subject to input saturation$

In this article, we address the delay-dependent robust stability of uncertain fractional order ne... more In this article, we address the delay-dependent robust stability of uncertain fractional order neutral-type (FONT) systems with distributed delays, nonlinear perturbations, and input saturation. With the aid of the Lyapunov–Krasovskii functional, criteria on asymptotic robust stability of FONT, expressed in terms of linear matrix inequalities, are constructed to compute the state-feedback controller gains. The controller gains are determined subject to maximizing the domain of attraction via the cone complementarity linearization algorithm. The theoretical results are validated using numerical simulations.

$Research paper thumbnail of LMI-based stability analysis of fractional order systems of neutral type with time varying delays under actuator saturation$

Computational and Applied Mathematics, 2021

This article addresses the stability of uncertain fractional order systems of neutral type under ... more This article addresses the stability of uncertain fractional order systems of neutral type under actuator saturation. Some criteria regarding the asymptotic robust stability of such type of systems are constructed with the help of the Lyapunov–Krasovskii functional. Moreover, a state-feedback control law is formulated by means of linear matrix inequalities. In order to analyze the domain of attraction, an algorithm for determining the controller gain is provided via the cone complementarity linearization method. The main results are illustrated via numerical examples.

$Research paper thumbnail of Observer‐based control approach for fractional‐order delay systems of neutral type with saturating actuator$

Mathematical Methods in the Applied Sciences

$Research paper thumbnail of Stability analysis of uncertain fractional-order neutral-type delay systems with actuator saturation$

Frontiers of Information Technology & Electronic Engineering

$Research paper thumbnail of Robust stability of uncertain fractional order systems of neutral type with distributed delays and control input saturation$