Adaptive neural network fast fractional sliding mode control of a 7-DOF exoskeleton robot

M Rahmani, MH Rahman - … Journal of Control, Automation and Systems, 2020 - Springer
To rehabilitate individuals with impaired upper limb (UL) functions due to neurological
disorders, this research focuses on trajectory tracking control (representing passive …

Robust adaptive fractional‐order terminal sliding mode control for lower‐limb exoskeleton

S Ahmed, H Wang, Y Tian - Asian Journal of Control, 2019 - Wiley Online Library
This paper introduces a robust adaptive fractional‐order non‐singular fast terminal sliding
mode control (RFO‐TSM) for a lower‐limb exoskeleton system subject to unknown external …

[HTML][HTML] Novel robust control of a 7-DOF exoskeleton robot

M Rahmani, MH Rahman - PloS one, 2018 - journals.plos.org
This paper proposes a novel robust control method for the control of a 7-DOF exoskeleton
robot. The external disturbances and unknown dynamics in the form of friction forces …

A fuzzy neural network-based fractional-order Lyapunov-based robust control strategy for exoskeleton robots: Application in upper-limb rehabilitation

A Razzaghian - Mathematics and Computers in Simulation, 2022 - Elsevier
The paper investigates a novel fractional-order Lyapunov-based robust controller based on
a fuzzy neural network (FNN) compensator for exoskeleton robotic systems. First, a finite …

A novel exoskeleton with fractional sliding mode control for upper limb rehabilitation

MR Islam, M Rahmani, MH Rahman - Robotica, 2020 - cambridge.org
The robotic intervention has great potential in the rehabilitation of post-stroke patients to
regain their lost mobility. In this paper, firstly, we present a design of a novel, 7 degree-of …

Model-free control using time delay estimation and fractional-order nonsingular fast terminal sliding mode for uncertain lower-limb exoskeleton

S Ahmed, H Wang, Y Tian - Journal of Vibration and Control, 2018 - journals.sagepub.com
A robotic exoskeleton is a nonlinear system, which is subjected to parametric uncertainties
and external disturbances. Due to this reason, it is difficult to obtain the exact model of the …

Output feedback adaptive fractional-order super-twisting sliding mode control of robotic manipulator

S Ahmed, A Ahmed, I Mansoor, F Junejo… - Iranian Journal of …, 2021 - Springer
In this study, trajectory tracking of robotic manipulators with uncertainties and external
disturbances is obtained by proposing model-free adaptive fractional super-twisting sliding …

Adaptive Fractional‐Order Super‐Twisting Sliding Mode Controller for Lower Limb Rehabilitation Exoskeleton in Constraint Circumstances Based on the Grey Wolf …

MA Faraj, B Maalej, N Derbel… - … Problems in Engineering, 2023 - Wiley Online Library
In this work, a lower limb exoskeleton with uncertainties and external disturbances under
constrained motion has been controlled by developing a model‐free adaptive optimal …

[HTML][HTML] Intelligent fractional order sliding mode based control for surgical robot manipulator

S Sachan, P Swarnkar - Electronics, 2023 - mdpi.com
In the era of digital OT (Operating Theatre), the developments in Robot-Assisted Surgery
(RAS) can greatly benefit the medical field. RAS is a method of technological advancement …

[HTML][HTML] 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 …