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    Vibration reduction shaft
    1.
    发明授权
    Vibration reduction shaft 有权

    公开(公告)号：US11118621B2

    公开(公告)日：2021-09-14

    申请号：US16126600

    申请日：2018-09-10

    Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

    Inventor： Dae Kwan Kim

    IPC: F16C3/02 ,  F16F15/124

    Abstract: A vibration reduction shaft includes a cylindrical outer shaft having an inner hollow portion, in which the outer shaft includes: a first member (110) and a second member (120) which are disposed to be spaced apart from each other in a longitudinal direction of the shaft; and a vibration reduction region (150) which is disposed between the first member and the second member, and multiple connecting members (151), which connect the first member and the second member in an axial direction, are disposed to be spaced apart from one another within the vibration reduction region.

    Method, apparatus and computer program for optimizing driving of antenna
    2.
    发明授权
    Method, apparatus and computer program for optimizing driving of antenna 有权

    公开(公告)号：US12183983B2

    公开(公告)日：2024-12-31

    申请号：US17738338

    申请日：2022-05-06

    Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

    Inventor： Dae Kwan Kim

    IPC: H01Q3/08 ,  H01Q3/00 ,  H04B7/185

    Abstract: A method of optimizing driving of an antenna for communication of an artificial satellite, by controlling a rotation angle of the antenna, according to an embodiment of the disclosure, includes: receiving a basic profile indicating a change in a rotation angle of the antenna such that a center line of the antenna points to a ground station in response to movement of the artificial satellite; determining a processing section with reference to points at which a rotation velocity of the antenna, for the basic profile, is zero; and generating an optimization profile that determines the change in the rotation angle of the antenna by configuring the rotation velocity of the antenna, for the processing section, with a preset optimized rotation velocity.

    Vibration reduction apparatus for bearing and bearing having the same
    5.
    发明授权
    Vibration reduction apparatus for bearing and bearing having the same 有权

    公开(公告)号：US10605305B2

    公开(公告)日：2020-03-31

    申请号：US16130474

    申请日：2018-09-13

    Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

    Inventor： Dae Kwan Kim

    IPC: F16C27/06 ,  F16F15/124 ,  F16F1/373 ,  F16F15/12

    Abstract: Provided is a vibration reduction device for a bearing, including: a bearing tube (50) which is spaced apart from an outer race of a bearing at a predetermined interval and surrounds the outer race; and a link (100) which is disposed between the outer race and the bearing tube, in which the link includes an outer race connecting portion (120) which is in contact with the outer race, and a tube connecting portion (130) which is in contact with the bearing tube, such that vibration reduction performance is implemented by the bearing tube and the link installed at an outer side of the bearing, and as a result, the vibration reduction device may be applied to various fields in which it is necessary to minimize vibration.

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