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1.发明授权Nutation damper system comprising a control member for varying a natural frequency of a pendulum 失效包含控制构件的调整阻尼器系统改变一个PENDULUM的自然频率
公开(公告)号：EP0091811B1
公开(公告)日：1988-03-30
申请号：EP83302022.5
申请日：1983-04-11
申请人： NEC CORPORATION
CPC分类号： B64G1/24 , B64G1/32 , G05D1/0883
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2.发明公开Nutation damper system comprising a control member for varying a natural frequency of a pendulum 失效包含控制构件的调整阻尼器系统改变一个PENDULUM的自然频率
公开(公告)号：EP0091811A3
公开(公告)日：1985-01-09
申请号：EP83302022
申请日：1983-04-11
申请人： NEC CORPORATION
CPC分类号： B64G1/24 , B64G1/32 , G05D1/0883
摘要： In a nutation damper system comprising a pendulum (30, 33, 34, 38) swingable at a natural fequency and a block element (35) operable in cooperation with the pendulum to damp nutation having a nutation frequency, a control member (40) is electromagnetically coupled to the pendulum to vary the natural frequency to a forced frequency substantially equal to the nutation frequency. The control member comprises an electromagnetic coil supplied as a control signal with an electric current produced by a control signal circuit and proportional to a square of the nutation frequency. The block element may comprise either a permanent magnet or an electromagnet when a pendulum weight of the pendulum is of an electrical conductor. The electromagnet may intermittently be energized by a power source circuit. Alternatively, the block element may be of an electrical conductor when the pendulum weight is of a permanent magnet.
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3.发明公开Nutation damper system comprising a control member for varying a natural frequency of a pendulum 失效章动阻尼系统，用于改变摆的固有频率的控制部分。
公开(公告)号：EP0091811A2
公开(公告)日：1983-10-19
申请号：EP83302022.5
申请日：1983-04-11
申请人： NEC CORPORATION
CPC分类号： B64G1/24 , B64G1/32 , G05D1/0883
摘要： In a nutation damper system comprising a pendulum (30, 33, 34, 38) swingable at a natural fequency and a block element (35) operable in cooperation with the pendulum to damp nutation having a nutation frequency, a control member (40) is electromagnetically coupled to the pendulum to vary the natural frequency to a forced frequency substantially equal to the nutation frequency. The control member comprises an electromagnetic coil supplied as a control signal with an electric current produced by a control signal circuit and proportional to a square of the nutation frequency. The block element may comprise either a permanent magnet or an electromagnet when a pendulum weight of the pendulum is of an electrical conductor. The electromagnet may intermittently be energized by a power source circuit. Alternatively, the block element may be of an electrical conductor when the pendulum weight is of a permanent magnet.
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