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    Dual mode vibration isolator
    1.
    发明授权
    Dual mode vibration isolator 失效
    双模式隔振器

    公开(公告)号：US4848525A

    公开(公告)日：1989-07-18

    申请号：US116098

    申请日：1987-11-02

    申请人： A. Dean Jacot ,  Brian J. Hamilton ,  David C. Cunningham ,  L. Porter Davis

    发明人： A. Dean Jacot ,  Brian J. Hamilton ,  David C. Cunningham ,  L. Porter Davis

    IPC分类号： F16F15/00 ,  F16F15/02 ,  F16F15/03

    CPC分类号： F16F15/02 ,  F16F15/03

    摘要： A dual mode vibration isolator for reducing transmission of vibrations between a forward body and an aft body includes a mounting member positioned between the forward and aft bodies, a plurality of magnetic actuators each having an armature fixed to the forward body and a stator mounted on the mounting member, and a plurality of linear actuators pivotally connected between the aft body and the mounting member. The magnetic actuators support the forward body relative to the mounting member by magnetically supporting the armatures between paired stator cores in each stator. The magnetic actuators are controlled, preferably through local flux feedback loops, to permit the stators to vibrate relative to the armature without transmitting forces to the armatures, thus isolating the vibration of the aft body and mounting member from the forward body. The linear actuators extend and contract to reposition the forward body and mounting member relative to the aft body. In addition, the linear actuators provide supplemental vibration isolation through a followup isolation loop that detects variation of the armatures from a predetermined null position between the paired stator cores. The followup isolation loop moves the mounting member relative to the aft body to restore the armatures to their null positions. The assistance provided by the linear actuators enables the use of small-size magnetic actuators for a given force requirement. A method for isolating vibration from transmission between two bodies also is disclosed.

    摘要翻译： 一种用于减少前身和后体之间的振动传播的双模隔振器，包括位于前躯体和后体之间的安装构件，多个磁致动器，每个磁致动器具有固定到前身的电枢和安装在前身上的定子 安装构件，以及可枢转地连接在后体和安装构件之间的多个线性致动器。 磁性执行器通过在每个定子中的一对定子铁芯之间磁性地支撑衔铁来相对于安装构件支撑前身。 优选地通过局部通量反馈回路来控制磁致动器，以允许定子相对于电枢振动而不会向电枢传递力，从而将后体和安装构件的振动与前体隔离。 线性致动器延伸和收缩以使前身体和安装构件相对于后身重新定位。 此外，线性致动器通过跟随隔离回路提供补充隔振，其检测电枢与成对的定子铁心之间的预定零位置的变化。 随动隔离环相对于船身移动安装构件，以将电枢恢复到其空位。 由线性致动器提供的帮助使得能够使用小尺寸的磁性致动器来施加给定的力。 公开了一种用于隔离两个物体之间的传播的振动的方法。

    Hybrid isolator and structural control actuator strut
    2.
    发明授权
    Hybrid isolator and structural control actuator strut 失效
    混合隔离器和结构控制执行器支柱

    公开(公告)号：US6003849A

    公开(公告)日：1999-12-21

    申请号：US811562

    申请日：1997-03-04

    申请人： L. Porter Davis ,  T. Tupper Hyde

    发明人： L. Porter Davis ,  T. Tupper Hyde

    IPC分类号： F16F15/02 ,  F16F9/10 ,  F16F13/26 ,  F16F15/027 ,  F16M1/00 ,  B60K5/12

    CPC分类号： F16F9/10 ,  F16F13/264 ,  F16F15/027 ,  F16F2230/10

    摘要： A vibration damping and isolation apparatus including a passive damping mechanism and an active enhancement mechanism. The passive damping mechanism operates to dissipate vibratory and shock forces applied to the vibration damping and isolation apparatus. The passive damping mechanism includes first and second spaced damping elements. A first resilient structure connects the first damping element to the second damping element to define a primary fluid chamber between the first and second damping elements. The passive damping mechanism further includes a second resilient structure that defines a secondary fluid chamber which is in fluid communication with the primary fluid chamber via a fluid flow orifice. A fluid fills the primary fluid chamber, the secondary fluid chamber and the fluid flow orifice. The active enhancement mechanism includes a system for sensing changes in fluid pressure, loads or other parameters of the passive damping mechanism as a result of the forces applied to the vibration damping and isolation apparatus. An actuator system of the active enhancement mechanism is coupled to the sensing system and acts on the passive damping mechanism, to change the fluid pressure within the passive damping mechanism in response to the sensing system or external commands. By actively changing the fluid pressure within the passive damping mechanism in response to forces, the active enhancement mechanism enhances the vibratory and shock dissipation of the passive damping mechanism and can actively change the stroke of the apparatus or force exerted by the apparatus.

    摘要翻译： 一种包括被动阻尼机构和主动增强机构的减振隔离装置。 被动阻尼机构用于消除施加到减震和隔离装置上的振动和冲击力。 被动阻尼机构包括第一和第二间隔的阻尼元件。 第一弹性结构将第一阻尼元件连接到第二阻尼元件以在第一和第二阻尼元件之间限定主流体室。 被动阻尼机构还包括第二弹性结构，其限定了通过流体流动孔与主要流体室流体连通的次级流体室。 流体填充主流体室，次流体室和流体流动孔。 主动增强机构包括用于感测由于施加到减振和隔离装置的力而导致的被动阻尼机构的流体压力，载荷或其它参数的变化的系统。 有源增强机构的致动器系统耦合到感测系统并且作用在被动阻尼机构上，以响应于感测系统或外部命令来改变被动阻尼机构内的流体压力。 通过主动地改变被动阻尼机构内的流体压力，主动增强机构增强了被动阻尼机构的振动和冲击耗散，并且可以主动地改变装置的行程或由该装置施加的力。