Adaptive fractional tracking control of robotic manipulator using fixed-time method

S Ahmed, AT Azar - Complex & Intelligent Systems, 2024 - Springer
This paper proposes an adaptive fractional-order sliding mode controller to control and
stabilize a nonlinear uncertain disturbed robotic manipulator in fixed-time. Fractional …

Design of adaptive fractional-order fixed-time sliding mode control for robotic manipulators

S Ahmed, AT Azar, M Tounsi - Entropy, 2022 - mdpi.com
In this investigation, the adaptive fractional-order non-singular fixed-time terminal sliding
mode (AFoFxNTSM) control for the uncertain dynamics of robotic manipulators with external …

Designing a fixed-time observer-based adaptive non-singular sliding mode controller for flexible spacecraft

E Rezaei, H Bolandi, M Fathi - ISA transactions, 2024 - Elsevier
This paper investigates the stabilization problem with a fixed-time approach for a flexible
spacecraft subject to vibrations of flexible modes, unknown bounded disturbance, and …

Chattering-free fault-tolerant attitude control with fast fixed-time convergence for flexible spacecraft

SM Esmaeilzadeh, M Golestani, S Mobayen - International Journal of …, 2021 - Springer
This paper is mainly dedicated to the challenging issue of fixed-time attitude control for a
flexible spacecraft in the presence of actuator faults, external disturbances and coupling …

Trajectory tracking control of euler–lagrange systems using a fractional fixed-time method

S Ahmed, AT Azar, M Tounsi, Z Anjum - Fractal and Fractional, 2023 - mdpi.com
The results of this research provide fixed-time fractional-order control for Euler–Lagrange
systems that are subject to external disturbances. The first step in the process of develo** …

[HTML][HTML] Adaptive fault tolerant non-singular sliding mode control for robotic manipulators based on fixed-time control law

S Ahmed, AT Azar, M Tounsi - Actuators, 2022 - mdpi.com
This paper presents a fault tolerant scheme employing adaptive non-singular fixed-time
terminal sliding mode control (AFxNTSM) for the application of robotic manipulators under …

Finite-time convergent three-dimensional nonlinear intercept angle guidance

B Biswas, A Maity, SR Kumar - Journal of Guidance, Control, and …, 2020 - arc.aiaa.org
MOST of the missile–target engagements are usually three-dimensional (3D) in nature.
However, they are often decoupled into two mutually orthogonal planes and then the …

[HTML][HTML] Enhanced tracking control for n-DOF robotic manipulators: A fixed-time terminal sliding mode approach with time delay estimation

S Ahmed, AT Azar - Results in Engineering, 2024 - Elsevier
This work proposes a fixed-time terminal sliding mode control scheme with time delay
estimation (FxTSM-TDE) for unknown nonlinear robotic systems under uncertainties and …

Adaptive fixed-time tsm for uncertain nonlinear dynamical system under unknown disturbance

S Ahmed, AT Azar, H Wang - Plos one, 2024 - journals.plos.org
For nonlinear systems subjected to external disturbances, an adaptive terminal sliding mode
control (TSM) approach with fixed-time convergence is presented in this paper. The …

航天器威胁规避智能自主控制技术研究综述

袁利, 姜甜甜 - 自动化学报, 2023 - aas.net.cn
当前, 轨道空间日益拥挤, 太空竞争不断加剧, 对航天器执行既定任务时的轨道威胁自主应对能力
提出了新的挑战, 使得航天器智能自主控制技术迎来新的发展机遇. 在调研分析了轨道威胁感知 …