Adaptive tracking control of an exoskeleton robot with uncertain dynamics based on estimated time-delay control

B Brahmi, M Saad, C Ochoa-Luna… - IEEE/ASME …, 2018 - ieeexplore.ieee.org
In this paper, we present a backstepping approach integrated with time-delay estimation to
provide an accurate estimation of unknown dynamics and to compensate for external …

Passive and active rehabilitation control of human upper-limb exoskeleton robot with dynamic uncertainties

B Brahmi, M Saad, CO Luna, PS Archambault… - Robotica, 2018 - cambridge.org
This paper investigates the passive and active control strategies to provide a physical
assistance and rehabilitation by a 7-DOF exoskeleton robot with nonlinear uncertain …

Adaptive control of 5 DOF upper-limb exoskeleton robot with improved safety

HB Kang, JH Wang - ISA transactions, 2013 - Elsevier
This paper studies an adaptive control strategy for a class of 5 DOF upper-limb exoskeleton
robot with a special safety consideration. The safety requirement plays a critical role in the …

Model-free prescribed performance fixed-time control for wearable exoskeletons

J Sun, J Wang, P Yang, S Guo - Applied Mathematical Modelling, 2021 - Elsevier
In this paper, a model-free fixed-time control strategy with prescribed performance is
proposed for the wearable exoskeleton angle tracking control. Firstly, an ultra-local model is …

Adaptive control of a 7-DOF exoskeleton robot with uncertainties on kinematics and dynamics

B Brahmi, M Saad, JTAT Lam, CO Luna… - European Journal of …, 2018 - Elsevier
In this paper, we propose a new adaptive visual tracking control approach based on sliding
mode control in Cartesian space applied to an exoskeleton robot with uncertain kinematics …

[HTML][HTML] Improved active disturbance rejection control for trajectory tracking control of lower limb robotic rehabilitation exoskeleton

S Aole, I Elamvazuthi, L Waghmare, B Patre… - Sensors, 2020 - mdpi.com
Neurological disorders such as cerebral paralysis, spinal cord injuries, and strokes, result in
the impairment of motor control and induce functional difficulties to human beings like …

Novel adaptive impedance control for exoskeleton robot for rehabilitation using a nonlinear time-delay disturbance observer

B Brahmi, M Driscoll, IK El Bojairami, M Saad, A Brahmi - ISA transactions, 2021 - Elsevier
A new adaptive impedance, augmented with backstepping control, time-delay estimation,
and a disturbance observer, was designed to perform passive–assistive rehabilitation …

Design and adaptive control for an upper limb robotic exoskeleton in presence of input saturation

W He, Z Li, Y Dong, T Zhao - IEEE transactions on neural …, 2018 - ieeexplore.ieee.org
This paper addresses the control design for an upper limb exoskeleton in the presence of
input saturation. An adaptive controller employing the neural network technology is …

Time-delay estimation based computed torque control with robust adaptive RBF neural network compensator for a rehabilitation exoskeleton

S Han, H Wang, Y Tian, N Christov - ISA transactions, 2020 - Elsevier
A new approach to gait rehabilitation task of a 12 DOF lower limb exoskeleton is proposed
combining time-delay estimation (TDE) based computed torque control (CTC) and robust …

Adaptive robust control of 5 DOF Upper-limb exoskeleton robot

HB Kang, JH Wang - International Journal of Control, Automation and …, 2015 - Springer
This paper deals with the problem of robust output feedback control for a class of 5DOF
upper-limb exoskeleton robot. It is able to assist with shoulder, elbow and wrist joint …