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Mohamed Bouri

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Publications associées (100)

Dionis Surgical Positioner Design for High Stiffness of a Parallel Structure

Hannes Bleuler, Mohamed Bouri, Jeremy Olivier, Jerry Bielmann

2018

Preliminary Study: Effects of Visual Distortion on Standing Balance Motion Amplitude and Visual Dependency on an Unstable Surface

Hannes Bleuler, Mohamed Bouri, Olaf Blanke, Jemina Fasola

Visual feedback is a common method to enhance motor learning and is widely used in rehabilitation institutes. Although balance training with visual feedback has shown positive results, the most effective way to provide the feedback is still open to researc ...

2018

High density fiber postitioner system for massive spectroscopic surveys

Hannes Bleuler, Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

We describe here a novel design of a fast high-density robotized fiber positioner system for massive spectroscopic surveys. The fiber positioners are compact, robust, and they can be coordinated, allowing for a high spatial density. Furthermore, the high a ...

OXFORD UNIV PRESS2018

Modular exoskeleton for example for spinal cord injured patients

Mohamed Bouri, Paul Bertusi, Tristan Hubert Vouga

The invention concerns an exoskeleton made of elements combined or attached together, said elements being adjustable or not and said elements being made in a sandwich construction. The invention also concerns a method to manufacture such an exoskeleton. ...

2018

Nonlinear PD control of a Parallel Delta robot: Expermentals Results

Mohamed Bouri

In this paper, a nonlinear proportional derivative control (NPD) is proposed to solve the trajectory tracking problem of a parallel Delta robot. In order to handle the strong coupling effect and external disturbances as well as to realise high-precision tr ...

IEEE2018

Priority coordination of fiber positioners in multi-objects spectrographs

Denis Gillet, Mohamed Bouri, Laleh Makarem, Jean-Paul Richard Kneib

Projects such as "The Dark Energy Spectroscopic Instrument" (DESI) [1] or "The Multi Object Optical and Near-infrared Spectrograph" (MOONS) [5] are developing spectrographs, composed of more than thousand of optical fibers in a confined hexagonal focal pla ...

SPIE-INT SOC OPTICAL ENGINEERING2018

HiBSO Hip Exoskeleton: Toward a Wearable and Autonomous Design

Hannes Bleuler, Mohamed Bouri, Amalric Louis Ortlieb, Jonathan Olivier, Romain Pierre François Baud

HiBSO is an active orthosis designed to assist the hip flexion-extension of the elderly. A fully autonomous system with untethered power electronics and energy supply is now available. Going beyond the restricted walking conditions of a treadmill unveils m ...

SPRINGER INTERNATIONAL PUBLISHING AG2018

Nonlinear PD plus sliding mode control with application to a parallel delta robot

Mohamed Bouri

In this paper, a hybrid nonlinear proportional-derivative-sliding mode controller (NPD-SMC) is developed for the trajectory tracking of robot manipulators. The proposed controller combines the advantage of the easy implementation of NPD control and the rob ...

SLOVAK UNIV TECHNOLOGY2018

Development and Comparison of Foot Interfaces for Controlling a Robotic Arm in Surgery

Hannes Bleuler, Mohamed Bouri, Etienne Burdet, Elahe Abdi

Currently available foot interfaces to command an external assistive robotic arm for laparoscopic surgery typically consist of a couple of push buttons placed on a planar platform. In this paper, we develop and compare two foot interfaces implementing isot ...

IEEE2018

Design and performances of an optical metrology system to test position and tilt accuracy of fiber positioners

Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

This paper describes the design of an optical metrology system for fiber positioners. The system can be used for accurate calibration and verification of fiber positioners with SCARA-like RR planar kinematics. It is capable of measuring accurately the abso ...

SPIE-INT SOC OPTICAL ENGINEERING2018

Modular and minimally constraining lower limb exoskeleton for enhanced mobility and balance augmentation

Mohamed Bouri, Amalric Louis Ortlieb

In one embodiment, the exoskeleton structure is fastened to the body of the user by a brace and at the foot level. The exoskeleton includes at least one set of three joints corresponding to the hip abduction/adduction, the hip flexion/extension and the kne ...

2018

AUTONOMYO: Design Challenges of Lower Limb Assistive Device for Elderly People, Multiple Sclerosis and Neuromuscular Diseases

Hannes Bleuler, Mohamed Bouri, Amalric Louis Ortlieb

Lower limb wearable robotics also known as exoskeleton or power suit is a booming field of research. Potential medical applications cover a large range of gait disorders from rehabilitation to assistance in daily mobility. Surprisingly, or not, paraplegia ...

Springer Int Publishing Ag2017

EXiO-A Brain-Controlled Lower Limb Exoskeleton for Rhesus Macaques

Hannes Bleuler, Mohamed Bouri, Jeremy Olivier, Miguel Nicolelis, Tristan Hubert Vouga

Recent advances in the field of brain-machine interfaces (BMIs) have demonstrated enormous potential to shape the future of rehabilitation and prosthetic devices. Here, a lower-limb exoskeleton controlled by the intracortical activity of an awake behaving ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Brain-actuated gait trainer with visual and proprioceptive feedback

Mohamed Bouri, Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Kyuhwa Lee, Dong Liu

Objective. Brain-machine interfaces (BMIs) have been proposed in closed-loop applications for neuromodulation and neurorehabilitation. This study describes the impact of different feedback modalities on the performance of an EEG-based BMI that decodes moto ...

Institute of Physics2017

The effects of haptic-virtual reality game therapy on brain-motor coordination for children with hemiplegia: A pilot study

Mohamed Bouri

Children with hemiplegia have movements' difficulties especially in their upper limbs, these difficulties occur due to the loss of the communication between the brain and the affected side of the body. In this study, visual, audio, and tactile stimulation ...

IEEE2017

Influence of an Assistive Hip Orthosis on Gait

Hannes Bleuler, Mohamed Bouri, Jeremy Olivier, Amalric Louis Ortlieb

Powered orthoses are leading to an imminent change in the field of assistance. The major challenges faced by the technology concern the management of the interaction between the user and the wearable device and the coordination between the user intention a ...

Springer International Publishing Ag2017

In a demanding task, three-handed manipulation is preferred to two-handed manipulation

Hannes Bleuler, Mohamed Bouri, Etienne Burdet, Elahe Abdi

Equipped with a third hand under their direct control, surgeons may be able to perform certain surgical interventions alone; this would reduce the need for a human assistant and related coordination difficulties. However, does human performance improve wit ...

Nature Research2016

A 24 mm diameter fibre positioner for spectroscopic surveys

Hannes Bleuler, Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

One of the big research topics in modern cosmology is the mystery of dark Energy. To unveil the secret, cosmologists want to measure precisely the evolution of large scale structures in the universe. One way of doing so is to measure the 3D location of a h ...

Spie-Int Soc Optical Engineering2016

Series Elastic Actuation for Assistive Orthotic Devices: Case Study of Pneumatic Actuator

Hannes Bleuler, Mohamed Bouri, Amalric Louis Ortlieb, Jonathan Olivier

Wearable assistive robotics is a modern field where intelligent actuated systems work in collaboration with the body to replace a lost limb, to enhance performances (e.g. carrying load, walking, running, jumping) or to train or rehabilitate specific activi ...

Springer-Verlag Berlin2016

An 8-mm diameter fibre robot positioner for massive spectroscopy surveys

Hannes Bleuler, Denis Gillet, Mohamed Bouri, Laurent Frédéric Jenni, Laleh Makarem, Jean-Paul Richard Kneib

Massive spectroscopic survey are becoming trendy in astrophysics and cosmology, as they can address new fundamental knowledge such as understanding the formation of the Milky Way and probing the nature of the mysterious dark energy. To enable massive spect ...

Oxford University Press2015

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