Method and Apparatus for Detecting Rotational Movement of a Piston Rod
    5.
    发明申请
    Method and Apparatus for Detecting Rotational Movement of a Piston Rod 审中-公开
    检测活塞杆旋转运动的方法和装置

    公开(公告)号:US20100213928A1

    公开(公告)日:2010-08-26

    申请号:US12774503

    申请日:2010-05-05

    IPC分类号: G01B7/14

    摘要: A piston rod position sensing system includes a cylinder and a piston rod arranged in the cylinder for movement with respect thereto. A magnetically hard layer is formed on the piston rod to provide a recording medium. A magnetic pattern is recorded in the magnetically hard layer. The magnetic pattern includes tracks recorded in the magnetically hard layer lengthwise of the piston rod. Each track comprises magnetically written regions used to identify a current position of the piston rod. The sensing system also includes a plurality of magnetic field sensors in greater number than the plurality of tracks. Each magnetic field sensor senses the magnetically written regions of one or more of the tracks while the piston rod is moving with respect to the cylinder and generates signals used for detecting rotation of the piston rod in response to the sensed magnetically written regions.

    摘要翻译: 活塞杆位置检测系统包括设置在气缸中的气缸和活塞杆,用于相对于其移动。 在活塞杆上形成磁性硬层以提供记录介质。 磁性图案被记录在磁性硬层中。 磁性图案包括记录在活塞杆纵向的磁性硬层中的轨迹。 每个轨道包括用于识别活塞杆当前位置的磁写区域。 感测系统还包括比多个轨道更多数量的多个磁场传感器。 当活塞杆相对于气缸移动时,每个磁场传感器感测一个或多个轨道的磁性写入区域,并产生用于响应于感测到的磁写区域来检测活塞杆的旋转的信号。

    Electroactive polymer devices for controlling fluid flow
    9.
    发明授权
    Electroactive polymer devices for controlling fluid flow 有权
    用于控制流体流动的电动聚合物装置

    公开(公告)号:US07703742B2

    公开(公告)日:2010-04-27

    申请号:US12424486

    申请日:2009-04-15

    IPC分类号: F16K31/02

    摘要: The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polymer may be in contact with a fluid where the deflection of the electroactive polymer may be used to change a characteristic of the fluid. Some of the characteristic of the fluid that may be changed include but are not limited to 1) a flow rate, 2) a flow direction, 3) a flow vorticity, 4) a flow momentum, 5) a flow mixing rate, 6) a flow turbulence rate, 7) a flow energy, 8) a flow thermodynamic property. The electroactive polymer may be a portion of a surface of a structure that is immersed in an external fluid flow, such as the surface of an airplane wing or the electroactive polymer may be a portion of a surface of a structure used in an internal flow, such as a bounding surface of a fluid conduit.

    摘要翻译: 本发明描述了用于控制流体流动的装置,例如阀。 装置可以包括一个或多个电活性聚合物换能器,其具有响应于电场施加而偏转的电活性聚合物。 电活性聚合物可以与流体接触,其中电活性聚合物的偏转可以用于改变流体的特性。 可以改变的流体的一些特征包括但不限于1)流量,2)流动方向,3)流动涡度,4)流动动量,5)流动混合速率,6) 流动湍流速率,7)流动能量,8)流动热力学性质。 电活性聚合物可以是浸没在外部流体流中的结构的表面的一部分,例如飞机机翼的表面,或者电活性聚合物可以是在内部流动中使用的结构的表面的一部分, 例如流体导管的边界表面。

    ELECTROACTIVE POLYMER DEVICES FOR CONTROLLING FLUID FLOW
    10.
    发明申请
    ELECTROACTIVE POLYMER DEVICES FOR CONTROLLING FLUID FLOW 有权
    用于控制流体流动的电动聚合物装置

    公开(公告)号:US20080245985A1

    公开(公告)日:2008-10-09

    申请号:US11829920

    申请日:2007-07-29

    IPC分类号: F16K31/02

    摘要: The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polymer may be in contact with a fluid where the deflection of the electroactive polymer may be used to change a characteristic of the fluid. Some of the characteristic of the fluid that may be changed include but are not limited to 1) a flow rate, 2) a flow direction, 3) a flow vorticity, 4) a flow momentum, 5) a flow mixing rate, 6) a flow turbulence rate, 7) a flow energy, 8) a flow thermodynamic property. The electroactive polymer may be a portion of a surface of a structure that is immersed in an external fluid flow, such as the surface of an airplane wing or the electroactive polymer may be a portion of a surface of a structure used in an internal flow, such as a bounding surface of a fluid conduit.

    摘要翻译: 本发明描述了用于控制流体流动的装置,例如阀。 装置可以包括一个或多个电活性聚合物换能器,其具有响应于电场施加而偏转的电活性聚合物。 电活性聚合物可以与流体接触,其中电活性聚合物的偏转可以用于改变流体的特性。 可以改变的流体的一些特征包括但不限于1)流量,2)流动方向,3)流动涡度,4)流动动量,5)流动混合速率,6) 流动湍流速率,7)流动能量,8)流动热力学性质。 电活性聚合物可以是浸没在外部流体流中的结构的表面的一部分,例如飞机机翼的表面,或者电活性聚合物可以是在内部流动中使用的结构的表面的一部分, 例如流体导管的边界表面。