Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Massachusetts Institute of Technology

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

Eads Deutschland Gmbh

Novares France

Moustapha Hafez

Laurent Eck

Jose Lozada

Samuel Roselier

Ferenc A Jolesz

Christophe Cazes

Gwenael Changeon

Jean-Pierre Nikolovski

Karin Bauer

Christian Bolzmacher

Florian Periquet

Charles Hudin

Steven Dubowsky

Edouard Leroy

Matthew Lichter

Peter Weiss

Andreas Wingert

Jean-Marc Alexandre

Nicolas Guenard

Daniel F Kacher

Fabien Ferlay

Nazih Mechbal

Florent Souvestre

José Lozada

François Bollier

Harald Zophoniasson

Romain Lejas

Yuan Liu

Michel Verge

Xavier Boutillon

Mohamed Benali-Khoudja

Mohamed Benali Khoudja

Frédérick Reichheld

A tactile stimulation interface includes a surface which the user explores by touch with the fingers, an actuator for applying a force to the surface, and a controller for controlling the actuator. The controller sends the actuator signals corresponding to the forces to be applied to the surface according to the tactile stimulation to be generated on the surface, the forces being determined by a time reversal method. The controller is configured such that, for at least one given tactile pattern, the actuator is controlled such as to generate pulses, in at least one area of the surface, by focusing at least one acoustic wave at a point. The location of the point on the surface varies over time, such as to provide tactile stimulation for the finger according to the given tactile pattern.

Tactile stimulation interface using time reversal and providing enhanced sensations

A tactile stimulation interface comprising a surface explored by touch by means of a finger of a user, actuators applying forces on said surface, and control means of the actuators, said control means sending, to the actuators, signals corresponding to the forces to be applied to said surface, the forces being determined by a time reversal method, means for detecting the contact of the finger with the surface and for monitoring the movement of the finger on the surface. The control means are capable, in order to produce an acoustic lubrication effect in at least one given area of the surface, of generating a signal formed from a convolution of a pulsed response returned by a continuous function representative of the acoustic lubrication effect.

Time reversal interface generating an acoustic lubrication

A haptic interface including: a button that can be rotated by a user; an interaction element for interaction with a magneto-rheological fluid, secured to the button; a mechanism for measuring a current position of the button; a brake including a magneto-rheological fluid and a system for generating a magnetic field in the fluid; a rotary electric motor including a shaft secured in rotation to the button; a control unit generating orders for the magnetic field generating system and for the motor; and a mechanism detecting the user's intention for action on the button, the control unit controlling generation of a magnetic field and/or the motor based on the information obtained on the detection mechanism.

Hybrid haptic interface with improved haptic feedback

A haptic device with ultrasonic actuation, including: a support, a user-interaction element movable at least in rotation and/or translation relative to the support, a first contact surface that moves as one with the interaction element, a second contact surface that moves as one with the support, resonators, and a control unit that excites the resonators at at least one resonance frequency, generating a vibration mode in a plane and an ultrasonic lubrication phenomenon between the first contact surface and the second contact surface.

Haptic device using vibration-based lubrication

A device for a rotary haptic interface including: a rotary button and an interaction member interacting with a magnetorheological fluid, the rotary button and interaction member being secured to a shaft for rotation therewith, a chamber defined by walls and containing the fluid and the interaction element, and a mechanism generating a variable magnetic field. The element for interaction with the fluid includes a skirt surrounding the shaft, the skirt being secured to a longitudinal end of the shaft opposite the end to which the rotary button is secured, and extending from the first end towards the rotary button. The shaft passes through a single wall of the chamber and a sealing mechanism is arranged between the shaft and the wall. A mechanism for guiding the rotation of the shaft is arranged around the shaft between the sealing mechanism and the rotary button.

Device for haptic interface with reduced no-load torque

A method for generating haptic sensations from a haptic interface including: a rotatable button; an element for interacting with a fluid with a viscosity that varies as a function of an exterior stimulus, the element for interacting with the fluid moving with the button; a fluid with an apparent viscosity that varies as a function of a magnetic field and that surrounds the element for interacting with the fluid; and a system for generating a magnetic field on command in the fluid. The method includes: evaluating a current position of the button; determining a direction of rotation of the button; altering the value of the current position when the current position is in a haptic stop zone and the direction of rotation of the button is associated with the haptic stop, and as long as the direction of rotation of the button is not modified.

Haptic interface providing improved haptic feedback especially in the reproduction of a stop

An ultrasonic motor comprising a rotor () having an at least partly spherical shape and two actuators (') each comprising an element of plate-shaped piezoelectric material comprising at least one contact edge (&#x2032;) in contact with the rotor (), said actuators (&#x2032;) also comprising on one of their faces electrodes intended to bias piezoelectric materials in a bending mode and in a longitudinal mode. The contact edges (&#x2032;) are concave and are formed by an arc of circle the radius of which substantially corresponds to the radius of the surface of the rotor (), said arcs of circle angularly extending at a determined angle such that the bending mode and the longitudinal mode in which the piezoelectric material is biased are at the same frequency.

Actuator for an ultrasonic motor and ultrasonic motor comprising at least one such actuator

A method and a device for locating an interaction on a surface of large size to render it touch-sensitive are provided. The method is based on a modeling of the distributions of loads between capacitive sensors distributed over the surface and an estimation of the position closest to the interaction, by searching for a minimum cost associated with the proximity of the sensor measurements with established models.

Method and device for locating interaction on a touch-sensitive surface

A haptic interface, including: a button which can be rotated by a user; an interaction element interacting with a magnetorheological fluid, secured to the button; a mechanism measuring a current position of the button; a brake including a magnetorheological fluid and a generation system to generate a magnetic field in the fluid; a controller configured to generate orders for the system to generate a magnetic fluid to modify a value of the magnetic field; and a mechanism to detect torque exerted by a user on the button to know direction of the torque and whether the torque is greater than a given value for a given direction, the controller controlling generation of a magnetic field based on obtained information about the torque at least when the button indicates zero or low speed.

Fluid haptic interface with improved haptic rendering using a torque or load sensor

A display device including a deformable surface, including: plural actuators including mobile elements that can be moved to deform the deformable surface, the mobile elements being distributed in a space occupied by the deformable surface; a set of position sensors for sensing the position of at least one touch, and distributed in the space occupied by the deformable surface; and an elastic flexible membrane placed against the mobile elements, extending through the space occupied by the deformable surface and configured to accompany deformation of the deformable surface. The set of sensors is secured to the elastic flexible membrane and distributed in a regular manner in the space occupied by the deformable surface in an array of electricity conductors configured to accompany deformations of the elastic flexible membrane.

Display device having a deformable surface and position sensors

This method for locating at least one touch on a touch-sensitive surface of an object comprises the following steps: The monitoring step () comprises measuring () the sensed signal during a time interval (t) starting during a transient phase of the propagation of the transmitted waves, for supplying, to said at least one reception point, information on radiation interfered with by said at least one touch.

Method and device for locating at least one touch on a touch-sensitive surface of an object

An haptic interface including a knob manipulated by a user, a rotation shaft with a longitudinal axis to which the knob is fixed in rotation, an interaction element with a magneto-rheological fluid in rotation with the shaft, the fluid, a system for generating a magnetic field in the fluid, and a control unit capable of generating orders to the system for generating the magnetic field to modify the magnetic field. The system includes a coil type mechanism generating a variable magnetic field, and a permanent magnet type mechanism generating a permanent magnetic field.

Force feedback interface with improved sensation

A device for measuring the position of at least one moving object in a three-dimensional grid. The device comprises: at least one optical head comprising an independent laser sources array outputting collimated laser beams, arranged about a central photodetector with a single sensitive cell; at least one movable base with two rotational degrees of freedom whereto said array is secured; and control electronics.

Device and method for measuring the position of at least one moving object in a three-dimensional grid

Damping device to impose a reaction to the displacement of a manual operating device (), said device comprising at least one chamber containing the magneto-rheological fluid, one or two means of generating a variable magnetic field () in the magneto-rheological fluid so as to modify its apparent viscosity, one element () free to move in translation capable of shearing the magneto-rheological fluid and designed to be mechanically connected to the manual operating device (), said mobile element () comprising a blade with a longitudinal axis (Y) comprising holes and/or recesses and/or projections.

Damping device capable of providing increased stiffness

A haptic interface including an element that interacts with a user; a rotation shaft with a longitudinal axis to which the user interaction element is fixed in rotation; a fluid interaction element, the fluid interaction element being fixed in rotation to the shaft, the fluid being of magneto-rheological type, a system generating magnetic field in the fluid; and a control unit capable of generating orders to magnetic field generation system so as to modify the magnetic field. The interaction element includes a cylindrical wall of revolution with a longitudinal axis, including through openings and/or patterns in relief.

Growing community of inventors

Arcueil, France

Moustapha Hafez