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    • 8. 发明申请
    • VARIABLE TEMPERATURE MAGNETIC DAMPER
    • 可变温度磁阻器
    • WO2007070106A1
    • 2007-06-21
    • PCT/US2006/027365
    • 2006-07-14
    • NORTHROP GRUMMAN CORPORATIONBRENNAN, Sarah, M.BRONOWICKI, Allen, J.
    • BRENNAN, Sarah, M.BRONOWICKI, Allen, J.
    • F16F15/03
    • F16F15/035
    • A passive magnetic damper suitable for use as a vibration isolator coupled between two masses, one of which is subject to vibration. The damper includes at least two pairs (10, 12) of rare earth permanent magnets configured to provide a narrow, generally planar gap (14), and backing plates (26, 28) positioned to complete a magnetic circuit passing through the magnets and the gap. A flat conductor plate (16) is positioned to be freely movable in the gap. Any time-varying force on the conductor plate results in the generation of eddy currents in the plate, and these in turn generate a mechanical force on the plate, which resists the time-varying force and produces a damping effect. With careful selection of materials for the magnets, the backing plates and the conductive plate, the damper is effective over a wide temperature range that includes cryogenic temperatures, and is operable over a wide range of damping levels.
    • 适用于耦合在两个质量块之间的隔振器的被动磁阻尼器,其中一个受到振动。 阻尼器包括至少两对(10,12)的稀土永磁体,其被配置为提供窄的,大致平坦的间隙(14),以及背板(26,28),其被定位成完成通过磁体的磁路和 间隙。 平面导体板(16)被定位成能够在间隙中自由移动。 导体板上的任何时间变化的力导致板中产生涡流,并且这些反过来在板上产生机械力,其抵抗时变力并产生阻尼效应。 通过仔细选择用于磁体,背板和导电板的材料,阻尼器在包括低温温度的宽温度范围内有效,并且可在宽范围的阻尼水平下操作。