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    TRANSLATIONAL ACCELEROMETER AND ACCELEROMETER ASSEMBLY METHOD
    1.
    发明专利
    TRANSLATIONAL ACCELEROMETER AND ACCELEROMETER ASSEMBLY METHOD 未知

    公开(公告)号：CA1296543C

    公开(公告)日：1992-03-03

    申请号：CA540648

    申请日：1987-06-26

    Applicant: SUNDSTRAND DATA CONTROL

    Inventor： HANSON RICHARD A ,  PETERS REX B ,  NORLING BRIAN L ,  URBACH EDWARD A

    IPC: G01P15/02 ,  G01P15/08 ,  G01P15/097 ,  G01P15/10

    Abstract: TRANSLATIONAL ACCELEROMETER AND ACCELEROMETER ASSEMBLY METHOD An accelerometer comprising a body (10, 16, 12), a proof mass (18, 30, 32), mounting means comprising flexures (20, 22) for mounting the proof massto the body, and force sensing means (34, 38). The flexures permit translationalmotion of the proof mass with respect to the body along a sensitive axis SA and rotation of the proof mass with respect to the body about a hinge axis HA that is perpendicular to the sensitive axis. Acceleration of the accelerometer along thesensitive axis results in translational motion of the proof mass along the sensitive axis. The force sensing means reacts to such translational motion by producing asignal indicative of acceleration along the sensitive axis. In a preferred embodiment, the mounting means comprises a pair of fused quartz flexures that are oppositely directed with respect to one another, and the sensing means comprises a pair of vibrating beam force transducers that are connected to the proof mass on opposite sides of the binge axis from one another. The described assembly method for accelerometers comprises forming bridges between the proof mass and body, the bridges being removed after attachment of the force transducers.

    2.
    发明专利
    未知

    公开(公告)号：FR2509864B1

    公开(公告)日：1987-03-06

    申请号：FR8212362

    申请日：1982-07-15

    Applicant: SUNDSTRAND DATA CONTROL

    Inventor： HANSON RICHARD A ,  ATHERTON KIM W

    IPC: G01L1/00 ,  G01L1/14 ,  G01L1/26 ,  G01P15/13 ,  G01P1/04 ,  G01P15/08

    Abstract: A flexure in a force transducer, as an inertial guidance accelerometer, for securing a force sensitive element to a mounting base includes one or more flexure sections having one or more recessed surfaces which are substantially coincident with the neutral bending plane of the flexure. Electrically conductive coating on the recessed surfaces provide electrical connections to components located on the force sensitive element. The conductive coatings on or near the neutral bending plane of the flexure sections minimizes bending moments caused by stresses set up between the conductive coatings and the flexure which may in turn lead to bias errors. At the same time, the flexure configuration provides for the desired strength and spring rate for the force sensitive element.

    3.
    发明专利
    未知

    公开(公告)号：IT1149014B

    公开(公告)日：1986-12-03

    申请号：IT4877982

    申请日：1982-07-08

    Applicant: SUNDSTRAND DATA CONTROL

    Inventor： HANSON RICHARD A ,  ATHERTON KIM W

    IPC: G01L1/00 ,  G01L1/14 ,  G01L1/26 ,  G01P15/13 ,  G01L

    Abstract: A flexure in a force transducer, as an inertial guidance accelerometer, for securing a force sensitive element to a mounting base includes one or more flexure sections having one or more recessed surfaces which are substantially coincident with the neutral bending plane of the flexure. Electrically conductive coating on the recessed surfaces provide electrical connections to components located on the force sensitive element. The conductive coatings on or near the neutral bending plane of the flexure sections minimizes bending moments caused by stresses set up between the conductive coatings and the flexure which may in turn lead to bias errors. At the same time, the flexure configuration provides for the desired strength and spring rate for the force sensitive element.

    5.
    发明专利
    未知

    公开(公告)号：IT1127914B

    公开(公告)日：1986-05-28

    申请号：IT5006580

    申请日：1980-11-03

    Applicant: SUNDSTRAND DATA CONTROL

    Inventor： HANSON RICHARD A

    IPC: G01D5/24 ,  G01P15/08 ,  G01P15/125 ,  G01P15/13 ,  G01P

    Abstract: In an assembly, for use in transducer type instruments such as accelerometers, having a position sensing movable member including a pick-off element, wherein the movable member is secured to a support member by a flexure or hinge and the support member in turn is cantilevered between two stator members, instrument bias errors resulting from the securing of the non-cantilevered portion of the support member between the stator members can be reduced by aligning the edges of the surfaces of the stators that contact the support member with the centroid of the pick-off element so that the axis of cantilever rotation passes through the centroid of the pick-off area. In transducers having electrical leads on the movable member, the flexure and the support member for electrically connecting the pick-off element to the support member, bias errors can be further reduced by including the area of the electrical leads in calculating the centroid.

    Force transducer flexure reed bearing electrical connections
    7.
    发明专利
    Force transducer flexure reed bearing electrical connections 未知

    公开(公告)号：GB2102579A

    公开(公告)日：1983-02-02

    申请号：GB8220261

    申请日：1982-07-13

    Applicant: SUNDSTRAND DATA CONTROL

    Inventor： ATHERTON KIM W ,  HANSON RICHARD A

    IPC: G01P15/13

    Abstract: A flexure reed in a force transducer, such as an inertial guidance accelerometer, for securing a force sensitive element 30 to a mounting base 32, includes one or more flexure sections 60, 62 having recessed surfaces which are closely adjacent to or substantially coincident with the neutral bending plane of the flexure. Electrically conductive coatings 47 on the recessed surfaces provide electrical connections to components 42 located on the force sensitive element 30. The location of the conductive coatings on or near the neutral bending plane of the flexure sections minimizes bias errors. A method of manufacture of such a flexure reed is also provided, by selective and simultaneous etching from opposite faces of the flexure reed blank.

    MOVEABLE ELEMENT WITH POSITION SENSING MEANS FOR TRANSDUCERS
    9.
    发明专利
    MOVEABLE ELEMENT WITH POSITION SENSING MEANS FOR TRANSDUCERS 未知

    公开(公告)号：CA1139123A

    公开(公告)日：1983-01-11

    申请号：CA363603

    申请日：1980-10-30

    Applicant: SUNDSTRAND DATA CONTROL

    Inventor： HANSON RICHARD A

    IPC: G01P15/08 ,  G01D5/24 ,  G01P15/125 ,  G01P15/13

    Abstract: In an assembly, for use in transducer type instruments such as accelerometers, having a position sensing movable member including a pick-off element, wherein the movable member is secured to a support member by a flexure or hinge and the support member in turn is cantilevered between two stator members, instrument bias errors resulting from the securing of the non-cantilevered portion of the support member between the stator members can be reduced by aligning the edges of the surfaces of the stators that contact the support member with the centroid of the pick-off element so that the axis of cantilever rotation passes through the centroid of the pick-off area. In transducers having electrical leads on the movable member, the flexure and the support member for electrically connecting the pick-off element to the support member, bias errors can be further reduced by including the area of the electrical leads in calculating the centroid.

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