Publications by Reymond Clavel

Development and integration of high straightness flexure guiding mechanisms dedicated to the METAS watt balance Mark II

There is a firm will in the metrology community to redefine the kilogram in the International System of units by linking it to a fundamental physical constant. The watt balance is a promising way to link the mass unit to the Planck constant h. At the Feder ...

Iop Publishing Ltd2014

A Ball-Screw Driven Motorized Hip Orthosis

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

In this paper we present a motorized hip orthosis to assist elderly people while walking, stair climbing and during the sit-to-stand transitions. The design is based on biomechanics considerations. Ranges of motion, velocities and torques of the hip joint ...

2014

Design, manufacturing and implementation of a novel 2-axis force sensor for haptic applications

Reymond Clavel

Minimally invasive surgeries on the lungs have eliminated the ability for surgeons to place their hands on the patient's organ to feel for abnormalities. Therefore, in this paper, a force sensor for 2 degrees of freedom haptic applications is described. It ...

Elsevier Science Sa2014

Design of the new METAS watt balance experiment Mark II

Reymond Clavel, Florent Cosandier

The kilogram is the last unit of the international system of units (SI) still based on a material artefact, the international prototype of the kilogram (IPK). The comparisons made in the last hundred years have clearly revealed a long-term relative drift b ...

Iop Publishing Ltd2013

Phase-Shift Master-Slave Mechanisms for High Angular-Speed Wedge-Prism Systems

Reymond Clavel, Olivier Chappuis

Laser micro-machining requires high dynamic laser spot trajectory and accuracy to control the laser beam scanning. A well-known technique to scan a laser beam over a specimen is to use a pair of wedge-prisms. However, it is difficult to master-slave the ph ...

Taylor & Francis Inc2013

Development of an Assistive Motorized Hip Orthosis

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

With the increase of life expectancy, a higher number of elderly need assistance to maintain their mobility and their independance. The hip joint is crucial for walking and is problematic for a large number of aged people. In this paper we present a novel ...

2013

Mechanical manipulator for surgical instruments

Hannes Bleuler, Reymond Clavel, Ricardo Daniel Rita Beira

A novel mechanical system, based on a new cable driven mechanical transmission, able to provide sufficient dexterity, stiffness, speed, precision and payload capacity to actuate multi-DOF micro-manipulators. Besides the possibility of being used in several ...

2012

Design and Calibration of Ultra-high-precision Industrial Robots

Reymond Clavel, Murielle Richard, Emanuele Lubrano

In this paper we present the key phases to design and calibrate ultra-high-precision industrial robots (i.e. submicrometric precision robots). The first part of our study will cover the robot design aspects, from the choice of the kinematics with the help ...

Institute of Electrical and Electronics Engineers2012

Modular methodology to design high precision parallel robots and application to a 5-Degree of Freedom flexure-based manipulator

Reymond Clavel, Murielle Richard

This paper presents a novel modular methodology to design ultra-high precision parallel robots. It chiefly aims at significantly decreasing both the complexity of their synthesis and their development time. This approach can be compared to a robotic Lego®, ...

2012

Mechanical positioning system for surgical instruments

Hannes Bleuler, Reymond Clavel, Ricardo Daniel Rita Beira

An external manipulator for positioning surgical instruments within the abdominal cavity, comprising a hybrid kinematics with a parallel structure, able to provide four, active or passive, positional degrees of freedom to a endoscopic unit, placed in the d ...

2012

Design of a miniature laser scanning head for high-bandwidth, low-amplitude beam steering

Reymond Clavel, Yves Bellouard

In laser micro-manufacturing, one of the challenges is to achieve fast scanning speed for fast fabrication of complex 3D microstructures. For microstructures with nanoscale features, it is often desirable to steer laser beams from a few microns to a few te ...

2012

Modularity and parallel kinematics: an original design methodology applied to high precision

Reymond Clavel, Murielle Richard

This paper introduces a new methodology to design modular industrial ultra-high precision robots; it aims at significantly reducing both the complexity of their design and their development time. This modular concept can be considered as a robotic Lego®, w ...

World Scientific2011

Growth of doped silicon nanowires by pulsed laser deposition and their analysis by electron beam induced current imaging

Reymond Clavel, Johann Michler

Doped silicon nanowires (NWs) were epitaxially grown on silicon substrates by pulsed laser deposition following a vapour-liquid-solid process, in which dopants together with silicon atoms were introduced into the gas phase by laser ablation of lightly and ...

2011

Concept of modular flexure-based mechanisms for ultra-high precision robot design

Reymond Clavel, Murielle Richard

This paper introduces a new concept of modular flexure-based mechanisms to design industrial ultra-high precision robots, which aims at significantly reducing both the complexity of their design and their development time. This modular concept can be consi ...

2011

Concept of modular flexure-based mechanisms for ultra-high precision robot design

Reymond Clavel, Murielle Richard

This paper introduces a new concept of modular flexure-based mechanisms to design industrial ultra-high precision robots, which aims at significantly reducing both the complexity of their design and their development time. This modular concept can be consi ...

2011

Dionis: A novel remote-center-of-motion parallel manipulator for Minimally Invasive Surgery

Hannes Bleuler, Reymond Clavel, Laura Santos Carreras, Giulio Rognini

The large volume and reduced dexterity of current surgical robotic systems are factors that restrict their effective performance. To improve the usefulness of surgical robots in minimally invasive surgery (MIS), a compact and accurate positioning mechanism ...

Ios Press2011

A new concept of modular kinematics to design ultra-high precision flexure-based robots

Reymond Clavel, Murielle Richard

This work deals with the kinematic conception and the mechanical design of ultra-high precision robots, which are at present costly to develop, both in time and money. The aim of this paper is thus to introduce a new modular concept of kinematics which all ...

2010

Compensation of thermal effects and cutting-forces acting on ultra high-precision robots

Reymond Clavel, Emanuele Lubrano

While dealing with sub-micrometric precision robots, all the events that can deform the robot structure or change its physics proprieties cause a loss of accuracy. In this paper we will focus on two significant issues: the first is the thermal changes acti ...

Messe Bremen-Hvg Hanseatische Veranstaltungs-Gmbh, Findorffstrasse 101, Bremen, 28215, Germany2010

The Linear Delta: Developments and Applications

Reymond Clavel, Mohamed Bouri

IEEE2010

Electron Microscopy Mechanical Testing of Silicon Nanowires Using Electrostatically Actuated Tensile Stages

Jean-Marc Breguet, Reymond Clavel, Johann Michler, Dongfeng Zhang

Two types of electrostatically actuated tensile stages for in situ electron microscopy mechanical testing of 1-D nanostructures were designed, microfabricated, and tested. Testing was carried out for mechanical characterization of silicon nanowires (SiNWs) ...

Institute of Electrical and Electronics Engineers2010