Patents by Inventor Mathieu Grossard
Mathieu Grossard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250256410Abstract: A motorized finger includes a base for fastening to a plate connecting to a robotic arm, a first phalanx connected to the base by at least one first articulation, a second phalanx connected to the first phalanx by at least one second articulation, and a first actuator fastened to the base and connected at least to the first phalanx in order to move the phalanges between two end positions.Type: ApplicationFiled: November 4, 2022Publication date: August 14, 2025Inventors: Michel CECCHIN, Pierre MILHAU, Mathieu GROSSARD
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Publication number: 20250222600Abstract: A robotic gripper including one or more fingers and at least one actuator for acting on the fingers in order to grip an object, the gripper including at least one sensor sensitive to a relative movement between the object manipulated by the gripper and the latter, this sensor delivering an output signal, a control system configured to execute at least one machine-learning algorithm trained to deliver, based on the one or more output signals generated by the one or more sensors, at least one slippage-detection score representative of the confidence of the algorithm in the presence of slippage, and to transmit control data to the actuators controlling the one or more fingers, the control data being generated so as to relate the strength of the forces applied by the one or more fingers to said score.Type: ApplicationFiled: January 7, 2025Publication date: July 10, 2025Inventors: Mathieu GROSSARD, Saifeddine ALOUI, Theo AYRAL
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Patent number: 12296464Abstract: A gripper having a frame and a finger with a first distal phalanx and a second proximal phalanx articulated on about a first axis. The first phalanx and the second phalanx connected to enable a rotation of the first phalanx about a second axis substantially parallel to the first axis, such that the finger can pass from an opening configuration to a clamping configuration, when the first phalanx and/or the second phalanx performs a rotation in a first direction relative to the frame. The finger having a controllable adhesion element.Type: GrantFiled: November 3, 2022Date of Patent: May 13, 2025Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUXENERGIES ALTERNATIVESInventors: Fares Kfoury, Mathieu Grossard
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Publication number: 20240416533Abstract: A gripper having a frame and a finger having a first, distal phalanx and a second, proximal phalanx that are mechanically connected to one another, the finger having a controllable adhesion element.Type: ApplicationFiled: November 3, 2022Publication date: December 19, 2024Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES AL TERNATIVESInventors: Fares KFOURY, Mathieu GROSSARD
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Publication number: 20230133561Abstract: A gripper including a frame and a finger including a first distal phalanx and a second proximal phalanx mechanically linked, the second phalanx includes a first bar and a linear actuator arranged so as to form a first four-bar linkage. A gripping device including a plurality of grippers.Type: ApplicationFiled: November 3, 2022Publication date: May 4, 2023Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Fares KFOURY, Mathieu GROSSARD
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Patent number: 10876909Abstract: A resonant sensor includes a proof body that can be subjected to a torque of forces produced by an external mechanical structure, the body comprising at least: a first interface and a second interface that can each come into contact with the structure; at least two sensitive elements each arranged between these two interfaces; a sensitive element comprising a plate embedded in a frame secured mechanically to the interfaces, the frame being fixed to the interfaces by two opposite corners, the other two corners being free, a local increase in weight being produced in each corner; each plate being able to resonate under the effect of local mechanical excitations produced at particular points by excitation transducers bearing the plate at several resonant frequencies, sensors picking up the resonant signals produced at the particular points, measurement means measuring the resonant frequency shifts of signals which are linear combinations of the resonant signals picked up, the shifts being a function of mechanicaType: GrantFiled: May 18, 2017Date of Patent: December 29, 2020Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Davinson Castano Cano, Mathieu Grossard, Arnaud Hubert
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Patent number: 10661451Abstract: The device includes at least: a bar longitudinally mobile along an axis of symmetry provided at one end with a plate; a first rigid connection and a second rigid connection which are symmetrical about the axis, each ending in a jaw, the two jaws forming a gripper clamp able to pick up an object; two pairs of flexible beams which are symmetrical about the axis, the beams each being connected by one end to one of the rigid connections, the other end being fixed, and guiding the movements of the rigid connections perpendicular to the axis, the ends of a pair of beams forming a parallelogram; two pairs of flexible beams which are symmetrical about the axis, the beams each being connected by one end to one of the rigid connections, the other end being connected to the bar, and guiding the movements of the bar parallel to the axis, the ends of a pair of beams forming a parallelogram.Type: GrantFiled: February 19, 2018Date of Patent: May 26, 2020Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Mathieu Grossard, Maxime Beck
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Publication number: 20200009745Abstract: The device includes at least: a bar longitudinally mobile along an axis of symmetry provided at one end with a plate; a first rigid connection and a second rigid connection which are symmetrical about the axis, each ending in a jaw, the two jaws forming a gripper clamp able to pick up an object; two pairs of flexible beams which are symmetrical about the axis, the beams each being connected by one end to one of the rigid connections, the other end being fixed, and guiding the movements of the rigid connections perpendicular to the axis, the ends of a pair of beams forming a parallelogram; two pairs of flexible beams which are symmetrical about the axis the beams each being connected by one end to one of the rigid connections, the other end being connected to the bar, and guiding the movements of the bar parallel to the axis, the ends of a pair of beams forming a parallelogram.Type: ApplicationFiled: February 19, 2018Publication date: January 9, 2020Inventors: Mathieu GROSSARD, Maxime BECK
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Publication number: 20200003285Abstract: The device able to guide a member in translational movement, includes two pairs of flexible beams which are symmetric about an axis, the two beams of one pair being curved and not mutually parallel; a central mechanical structure through which the axis passes and to which the pairs of beams are attached at fixing points, the mechanical structure being able to be mechanically connected to the member; two mechanical interfaces to each of which a pair of beams is attached at fixing points, the interfaces being able to be attached to a mechanical structure; the two sets of attachment points situated on either side of the axis of symmetry each forming a parallelogram, the guidance of the member being obtained by means of a force exerted on the central mechanical structure parallel to the axis of symmetry.Type: ApplicationFiled: February 19, 2018Publication date: January 2, 2020Inventors: Maxime BECK, Mathieu GROSSARD
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Patent number: 10478969Abstract: A method of detecting collision between a robot and its environment comprises: generating, on the basis of a dynamic model of the robot, a signal representative of the collisions between the robot and environment, the signal being a residual r; carrying out an adaptive high-pass filtering of the residual r; determining, in a recursive manner, an adaptive threshold T composed of at least one first dynamic term T?1 equal to an item of information regarding the parametric uncertainties between the model and real behavior of the robot, the parametric uncertainties being related to a first variable characteristic of the state of the robot among the following variables: position, velocity or acceleration of an articulation of the robot, or a linear or nonlinear function of one of these variables or of a combination; comparing the filtered residual with the adaptive threshold T to deduce the existence or otherwise of a collision.Type: GrantFiled: February 7, 2014Date of Patent: November 19, 2019Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Alex Caldas, Maria Makarov, Mathieu Grossard
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Publication number: 20190162607Abstract: A resonant sensor includes a proof body that can be subjected to a torque of forces produced by an external mechanical structure, the body comprising at least: a first interface and a second interface that can each come into contact with the structure; at least two sensitive elements each arranged between these two interfaces; a sensitive element comprising a plate embedded in a frame secured mechanically to the interfaces, the frame being fixed to the interfaces by two opposite corners, the other two corners being free, a local increase in weight being produced in each corner; each plate being able to resonate under the effect of local mechanical excitations produced at particular points by excitation transducers bearing the plate at several resonant frequencies, sensors picking up the resonant signals produced at the particular points, measurement means measuring the resonant frequency shifts of signals which are linear combinations of the resonant signals picked up, the shifts being a function of mechanicaType: ApplicationFiled: May 18, 2017Publication date: May 30, 2019Inventors: Davinson CASTANO CANO, Mathieu GROSSARD, Arnaud HUBERT
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Patent number: 10126189Abstract: A resonant sensor includes a proof body having a first and a second interface that can each come into contact with an external mechanical structure; two sensitive zones arranged between these two interfaces; a sensitive zone formed by a plate embedded in a frame secured mechanically to the interfaces, the plate able to resonate under the effect of local mechanical excitations produced at particular points by excitation transducers bearing the plate at several resonant frequencies, sensors picking up the resonant signals produced at the particular points, measurement means measuring the resonant frequency shifts of signals which are linear combinations of the resonant signals picked up, the shifts being a function of mechanical stresses induced by the forces and transmitted to the plate by the frame, the components of the torque of forces being determined from the resonant frequency shifts measured on the plates of the sensitive zones.Type: GrantFiled: November 25, 2015Date of Patent: November 13, 2018Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Davinson Castano Cano, Mathieu Grossard, Arnaud Hubert
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Publication number: 20170276559Abstract: A resonant sensor comprises a proof body subjected to a torque of forces produced by an external mechanical structure, the body comprising: a first and a second interface that can each come into contact with the structure; at least two sensitive zones arranged between these two interfaces; a sensitive zone formed by a plate embedded in a frame secured mechanically to the interfaces, the plate able to resonate under the effect of local mechanical excitations produced at particular points by excitation transducers bearing the plate at several resonant frequencies, sensors picking up the resonant signals produced at the particular points, measurement means measuring the resonant frequency shifts of signals which are linear combinations of the resonant signals picked up, the shifts being a function of mechanical stresses induced by the forces and transmitted to the plate by the frame, the components of the torque of forces being determined from the resonant frequency shifts measured on the plates of the sensitiveType: ApplicationFiled: November 25, 2015Publication date: September 28, 2017Inventors: Davinson CASTANO CANO, Mathieu GROSSARD, Arnaud HUBERT
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Patent number: 9616771Abstract: A method of managing the energy consumed by a motor vehicle, uses: a simulation unit incorporating a vehicle model predicting behavior of the vehicle and a driver model predicting behavior of the driver of the vehicle, the driver model receiving a speed setpoint and the speed of the vehicle measured at successive instants, and supplying a motor torque setpoint to the vehicle model which is a function of the speeds and of the modelled driver behavior; an optimization algorithm interacting with the simulation unit; the method including trajectories composed of the trajectory of the speed setpoint and the trajectory of a setpoint for controlling an item of auxiliary equipment, the trajectory of a setpoint describing the variation of the setpoint as a function of the position of the vehicle, the trajectories being calculated with respect to given objectives according to the optimization algorithm whose variables are formed from the setpoints.Type: GrantFiled: July 10, 2013Date of Patent: April 11, 2017Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Mathieu Grossard, Neil Abroug, Guillaume Hamon
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Patent number: 9278628Abstract: A method includes trajectories of setpoints controlling a motor mechanism and auxiliary unit, the trajectory describing variation of the setpoint by position of the mobile system, the trajectories being calculated with respect to objectives according to an optimization algorithm, said method comprising: storing an approximate profile of the route as segments of straight lines, forming positions sampled along the route, a sampled position corresponding to passage from one segment to the following segment; sampling the profile according to a spatial pitch, forming a series of positions sampled along the route; the trajectories being recalculated at each sampled position by the optimization algorithm, the setpoints being constant over a given segment, a simulation predicting the energy environment of the mobile system at each sampled position as a function of the setpoints and the profile of the route, the optimization algorithm taking the simulation result to calculate the setpoints.Type: GrantFiled: May 22, 2012Date of Patent: March 8, 2016Assignee: Commissariat a L'Energie Atomique et aux Energies AlternativesInventors: Mathieu Grossard, Sofiene Kachroudi, Neil Abroug
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Publication number: 20160001446Abstract: A method of detecting collision between a robot and its environment comprises: generating, on the basis of a dynamic model of the robot, a signal representative of the collisions between the robot and environment, the signal being a residual r; carrying out an adaptive high-pass filtering of the residual r; determining, in a recursive manner, an adaptive threshold T composed of at least one first dynamic term T?1 equal to an item of information regarding the parametric uncertainties between the model and real behavior of the robot, the parametric uncertainties being related to a first variable characteristic of the state of the robot among the following variables: position, velocity or acceleration of an articulation of the robot, or a linear or nonlinear function of one of these variables or of a combination; comparing the filtered residual with the adaptive threshold T to deduce the existence or otherwise of a collision.Type: ApplicationFiled: February 7, 2014Publication date: January 7, 2016Inventors: Alex CALDAS, Maria MAKAROV, Mathieu GROSSARD
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Publication number: 20150202990Abstract: A method of managing the energy consumed by a motor vehicle, uses: a simulation unit incorporating a vehicle model predicting behavior of the vehicle and a driver model predicting behavior of the driver of the vehicle, the driver model receiving a speed setpoint and the speed of the vehicle measured at successive instants, and supplying a motor torque setpoint to the vehicle model which is a function of the speeds and of the modelled driver behavior; an optimization algorithm interacting with the simulation unit; the method including trajectories composed of the trajectory of the speed setpoint and the trajectory of a setpoint for controlling an item of auxiliary equipment, the trajectory of a setpoint describing the variation of the setpoint as a function of the position of the vehicle, the trajectories being calculated with respect to given objectives according to the optimization algorithm whose variables are formed from the setpoints.Type: ApplicationFiled: July 10, 2013Publication date: July 23, 2015Inventors: Mathieu Grossard, Neil Abroug, Guillaume Hamon
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Patent number: 8739641Abstract: A micro-force sensor comprising a one-piece plate including a first area defining a first recess, which must be held in position relative to a mounting, a second area connected to the first area defining the first recess and a second recess, a measuring beam across the first recess having a first end embedded in the first area and a second end connected to the second area, an excitation beam across the second recess having two ends embedded in the second area and being provided with at least one excitation element, a third area connected to the first area and an effector beam having one free end for receiving the force being measured and one end-embedded in the third area, and a fourth area connecting the embedded end of the effector beam to the second end of the measuring beam, which is provided with a measuring element.Type: GrantFiled: November 22, 2010Date of Patent: June 3, 2014Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventors: Mehdi Boukallel, Mathieu Grossard
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Publication number: 20140081503Abstract: A method includes trajectories of setpoints controlling a motor mechanism and auxiliary unit, the trajectory describing variation of the setpoint by position of the mobile system, the trajectories being calculated with respect to objectives according to an optimization algorithm, said method comprising: storing an approximate profile of the route as segments of straight lines, forming positions sampled along the route, a sampled position corresponding to passage from one segment to the following segment; sampling the profile according to a spatial pitch, forming a series of positions sampled along the route; the trajectories being recalculated at each sampled position by the optimization algorithm, the setpoints being constant over a given segment, a simulation predicting the energy environment of the mobile system at each sampled position as a function of the setpoints and the profile of the route, the optimization algorithm taking the simulation result to calculate the setpoints.Type: ApplicationFiled: May 22, 2012Publication date: March 20, 2014Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALATERNATIVESInventors: Mathieu Grossard, Sofiene Kachroudi, Neil Abroug
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Publication number: 20130018612Abstract: An observation device of a non-linear system includes: at least one sensor supplying a measurement vector each component of which is a measurable output parameter of the non-linear system; and a state observer processor that, based on a predetermined state representation of the non-linear system, is configured to supply an estimation of a state vector of the non-linear system according to the measurement vector supplied and a control vector of the non-linear system. In addition, the predetermined state representation including a non-linearity model of the system in a form of a gain parameter, and one component of the state vector is this gain parameter.Type: ApplicationFiled: April 11, 2011Publication date: January 17, 2013Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Mathieu Grossard, Mehdi Boukallel