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    SYSTEM AND METHOD FOR OPERATING MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS
    1.
    发明申请
    SYSTEM AND METHOD FOR OPERATING MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS 有权

    公开(公告)号：US20210138645A1

    公开(公告)日：2021-05-13

    申请号：US17047090

    申请日：2019-04-23

    Applicant: EXONETIK INC.

    Inventor： Pascal LAROSE ,  Patrick CHOUINARD ,  Jean-Sebastien PLANTE ,  Guifre JULIO

    IPC: B25J9/16 ,  F16D37/02

    Abstract: A control system for controlling movements of an end effector connected to a clutch output of at least two magnetorheological (MR) fluid clutch apparatus, the control system comprises a clutch driver configured to drive the at least two MR fluid clutch apparatuses between at least a controlled slippage mode, in which slippage between a clutch input and the clutch output of the MR fluid clutch apparatuses varies, and a combined mode, in which said slippage between the clutch input and the clutch output is maintained below a given threshold simultaneously for both of the MR fluid clutch apparatuses, the two clutch outputs resisting movement of the end effector in the same direction. A motor driver is configured to control a motor output of at least one motor, the motor output coupled to at least one clutch input. A mode selector module is configured to receive signals representative of at least one movement parameter of the end effector, the mode selector module selecting a mode between at least the controlled slippage mode and the combined mode of the clutch driver based on the signals, and switching the selected mode based on the signals. A movement controller controls the clutch driver and the motor driver to displace the end effector based on at least one of the selected mode and on commanded movements of the end effector for the end effector to achieve the commanded movements.

    MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS WITH CYLINDRICAL FLUID GAP
    2.
    发明申请
    MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS WITH CYLINDRICAL FLUID GAP 审中-公开

    公开(公告)号：US20180156285A1

    公开(公告)日：2018-06-07

    申请号：US15785916

    申请日：2016-04-21

    Applicant: EXONETIK INC.

    Inventor： Jean-Sebastien PLANTE ,  Marc DENNINGER ,  Guifre JULIO ,  Patrick CHOUINARD ,  Pascal LAROSE

    IPC: F16D37/02 ,  B64C27/59 ,  F16D29/00 ,  F16D37/00

    Abstract: A magnetorheological fluid clutch apparatus comprises a stator having at least an annular wall; a first rotor rotatably mounted to the stator, the first rotor having at least one first shear surface; a second rotor rotatably mounted to the stator for rotating about a common axis with the first rotor, the second rotor having at least one second shear surface opposite the at least one first shear surface, the shear surfaces separated by at least one annular space. A magnetorheological (MR) fluid is in an MR fluid chamber including the at least one annular space, the MR fluid configured to generate a variable amount of torque transmission between the rotors when subjected to a magnetic field. An inner magnetic core and an outer magnetic core with an annular cavity therebetween receive the annular wall of the stator, the inner magnetic core and the outer magnetic core connected to at least one of the rotors to rotate therewith so as to be rotatably mounted to the stator. Outer and inner fluid gaps are between the inner magnetic core and the annular wall, and between the outer magnetic core and the annular wall, the outer and inner fluid gaps filled with at least one fluid. At least one coil is supported by the annular wall and actuatable to deliver a magnetic field through the MR fluid, the magnetic field following a path comprising the annular wall, the outer fluid gap, the outer magnetic core, the at least one first shear surface and the at least one second shear surface,the inner magnetic core and the inner fluid gap, wherein one of the rotors is adapted to be coupled to a power input and the other of the rotors is adapted to be connected to an output whereby actuation of the at least one coil results in a variation of torque transmission between the rotors.

    PROGRAMMABLE MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS
    3.
    发明申请
    PROGRAMMABLE MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS 有权

    公开(公告)号：US20220389976A1

    公开(公告)日：2022-12-08

    申请号：US17772003

    申请日：2020-11-12

    Applicant: EXONETIK INC.

    Inventor： Pascal LAROSE ,  Patrick CHOUINARD ,  Marc DENNINGER

    IPC: F16D37/02 ,  E05F15/611

    Abstract: A system for operating at least one magnetorheological fluid clutch apparatus may, in a first mode, vary an amount of torque transmission between a driving member and a driven member in the at least one magnetorheological fluid clutch apparatus by actuating at least one coil in the at least one magnetorheological fluid clutch apparatus. In a second mode, the system may cause torque transmission between the driven member and the driving member by setting a desired remanent magnetization level in a magnetic component of the at least one magnetorheological fluid clutch apparatus by actuating the at least one coil in the at least one magnetorheological fluid clutch apparatus.

    MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS WITH LOW PERMEABILITY DRUMS
    4.
    发明申请
    MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUS WITH LOW PERMEABILITY DRUMS 有权

    公开(公告)号：US20210317883A1

    公开(公告)日：2021-10-14

    申请号：US17284601

    申请日：2019-10-11

    Applicant: EXONETIK INC.

    Inventor： Jean-Sebastien PLANTE ,  Jérôme MARCHAND ,  Pascal LAROSE ,  Patrick CHOUINARD ,  Marc DENNINGER ,  Jean-Philippe LUCKING BIGUE

    IPC: F16D37/02

    Abstract: A magnetorheological fluid clutch apparatus comprises an input(s) having an input shear surface(s). An output(s) is rotatably mounted about the input for rotating about a common axis with the input, the output(s) having output shear surface(s), the input shear surface and the output shear surface separated annular space(s). with magnetorheological fluid, configured to generate a variable amount of torque transmission between the sets of input rotor and output rotor when subjected to a magnetic field. An electromagnet(s) delivers a magnetic field through the magnetorheological fluid, the electromagnet configured to vary the strength of the magnetic field, whereby actuation of the electromagnet results in torque transmission from the input to the output. A member(s) defining at least one of the shear surfaces is made of a low-permeability material.

    DYNAMIC MOTION CONTROL SYSTEM USING MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUSES
    6.
    发明申请
    DYNAMIC MOTION CONTROL SYSTEM USING MAGNETORHEOLOGICAL FLUID CLUTCH APPARATUSES 审中-公开

    公开(公告)号：US20180072189A1

    公开(公告)日：2018-03-15

    申请号：US15714452

    申请日：2017-09-25

    Applicant: EXONETIK INC.

    Inventor： Jean-Sebastien PLANTE ,  Marc DENNINGER ,  Guifre JULIO ,  Patrick CHOUINARD ,  Pascal LAROSE ,  Caroline FRASER

    IPC: B60N2/02 ,  B60G17/015 ,  B60G17/016 ,  B60N2/16 ,  A61G1/04

    Abstract: An active suspension system comprises at least one biasing device configured to support a body from a structure, and at least one motor. A magnetorheological (MR) fluid clutch apparatus(es) is coupled to the at least one motor to receive torque from the motor, the MR fluid clutch apparatus controllable to transmit a variable amount of torque. A mechanism is between the at least one MR fluid clutch apparatus and the body to convert the torque received from the at least one MR fluid clutch apparatus into a force on the body. Sensor(s) provide information indicative of a state of the body or structure. A controller receives the information indicative of the state of the body or structure and for outputting a signal to control the at least one MR fluid clutch apparatus in exerting a desired force on the body to control movement of the body according to a desired movement behavior.

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