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    LINEAR INDUCTIVE TORQUE SENSOR
    2.
    发明申请
    LINEAR INDUCTIVE TORQUE SENSOR 审中-公开

    公开(公告)号：WO2023033897A1

    公开(公告)日：2023-03-09

    申请号：PCT/US2022/033577

    申请日：2022-06-15

    申请人： ALLEGRO MICROSYSTEMS, LLC

    发明人： LATHAM, Alexander ,  ROMERO, Hernán D.

    IPC分类号： G01L3/10 ,  G01L5/22

    摘要： Methods and apparatus for linear inductive torque sensing that may include transmitting an AC magnetic field with a transmit coil toward a conductive target and receiving a field reflected by the conductive target with a receive coil, wherein the conductive target comprises first and second targets positioned with respect to each other and each shaped to linearly increase or decrease an amount of conductive area of the conductive target due to relative movement of the first and second targets which changes an amount of the field reflected by the conductive target. A signal from the receive coil can be processed to determine a relative position of the first and second targets corresponding to an amount of torque on an elongate member connected to the first and second targets. In other embodiments, a change in inductance of the transmit coil is measured to determine relative target position.

    COIL ACTUATED PRESSURE SENSOR
    3.
    发明申请
    COIL ACTUATED PRESSURE SENSOR 审中-公开

    公开(公告)号：WO2018217343A1

    公开(公告)日：2018-11-29

    申请号：PCT/US2018/028476

    申请日：2018-04-20

    申请人： ALLEGRO MICROSYSTEMS, LLC ,  COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES

    发明人： LATHAM, Alexander ,  DOOGUE, Michael, C. ,  FERMON, Claude ,  DU HAMEL DE MILLY, Xavier ,  PANNETIER-LECOEUR, Myriam

    IPC分类号： G01L13/02 ,  G01L9/00

    摘要： A pressure sensor includes a chamber comprising a conductive portion and a deformable portion coupled to the conductive portion and susceptible to deformation in response to a pressure differential between an interior of the chamber and an exterior of the chamber; at least one coil responsive to an AC coil drive signal; at least one magnetic field sensing element disposed proximate to the at least one coil and to the conductive portion of the chamber and configured to generate a magnetic field signal in response to a reflected magnetic field generated by the at least one coil and reflected by the conductive portion; and a circuit coupled to the at least one magnetic field sensing element to generate an output signal of the pressure sensor indicative of the pressure differential between the interior of the chamber and the exterior of the chamber in response to the magnetic field signal.

    PACKAGES FOR COIL ACTUATED POSITION SENSORS
    5.
    发明申请
    PACKAGES FOR COIL ACTUATED POSITION SENSORS 审中-公开

    公开(公告)号：WO2018217356A3

    公开(公告)日：2018-11-29

    申请号：PCT/US2018/028822

    申请日：2018-04-23

    申请人： ALLEGRO MICROSYSTEMS, LLC

    发明人： LATHAM, Alexander ,  DOOGUE, Michael, C. ,  BOUDREAU, Jason

    IPC分类号： G01R33/00 ,  G01R33/032 ,  G01R33/12 ,  G01N27/90

    摘要： An apparatus comprises one or more substrates and one or more coils. At least one of the coils is configured to produce a first magnetic field that induces eddy currents in a conductive target, which generates a reflected magnetic field. One or more magnetic field sensing elements supported by the one or more substrates detect the reflected magnetic field. A conductive support structure supports the one or more substrates. The support structure includes a gap in an area adjacent to the one or more coils so that the support structure does not generate a reflected magnetic field in response to the first magnetic field.

    PACKAGES FOR COIL ACTUATED POSITION SENSORS
    7.
    发明申请
    PACKAGES FOR COIL ACTUATED POSITION SENSORS 审中-公开

    公开(公告)号：WO2018217356A2

    公开(公告)日：2018-11-29

    申请号：PCT/US2018/028822

    申请日：2018-04-23

    申请人： ALLEGRO MICROSYSTEMS, LLC

    发明人： LATHAM, Alexander ,  DOOGUE, Michael, C. ,  BOUDREAU, Jason

    IPC分类号： G01R33/00 ,  G01R33/032 ,  G01R33/12

    摘要： An apparatus comprises one or more substrates and one or more coils. At least one of the coils is configured to produce a first magnetic field that induces eddy currents in a conductive target, which generates a reflected magnetic field. One or more magnetic field sensing elements supported by the one or more substrates detect the reflected magnetic field. A conductive support structure supports the one or more substrates. The support structure includes a gap in an area adjacent to the one or more coils so that the support structure does not generate a reflected magnetic field in response to the first magnetic field.

    SYSTEM AND METHOD FOR CONTROLLING A MOTOR
    9.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING A MOTOR 审中-公开
    用于控制电机的系统和方法

    公开(公告)号：WO2014193551A2

    公开(公告)日：2014-12-04

    申请号：PCT/US2014/033944

    申请日：2014-04-14

    申请人： ALLEGRO MICROSYSTEMS, LLC

    发明人： CADUGAN, Bryan ,  LATHAM, Alexander

    IPC分类号： H02P23/00

    CPC分类号： G03B13/34 ,  G03B3/10 ,  H02P7/00 ,  H02P23/0004 ,  H02P25/028 ,  H02P25/034 ,  H02P31/00

    摘要： A system for controlling a motor may include a motor driver circuit for driving a camera motor. A memory capable of storing a plurality of parameters for controlling the camera motor may also be included. A set of parameters from the memory may be chosen to be applied to driving the motor. A motor control module may receive a signal from the control logic module, apply the chosen set of parameters to driving the camera motor, and command the motor driver circuit to drive the motor in accordance with the applied set of parameters. The parameters may be chosen based on desired behavior of the system and various other stimuli.

    摘要翻译： 用于控制电动机的系统可以包括用于驱动照相机电动机的电动机驱动器电路。 还可以包括能够存储用于控制照相机电动机的多个参数的存储器。 可以选择来自存储器的一组参数来应用于驱动电动机。 电机控制模块可以从控制逻辑模块接收信号，应用所选择的一组参数来驱动摄像机电机，并且根据所应用的一组参数来命令电动机驱动电路来驱动电动机。 可以基于系统的期望行为和各种其它刺激来选择参数。