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    TEMPERATURE COMPENSATING FLEXTENSIONAL TRANSDUCER
    3.
    发明公开
    TEMPERATURE COMPENSATING FLEXTENSIONAL TRANSDUCER 有权
    温度补偿柔性传感器

    公开(公告)号：EP2212933A1

    公开(公告)日：2010-08-04

    申请号：EP08844721.4

    申请日：2008-10-30

    申请人： QinetiQ Limited

    发明人： RAHMAN, Ahmed, Yehia, Amin, Abdel ,  GORE, Jonathan, Geoffrey ,  LOWRIE, Fiona, Louise

    IPC分类号： H01L41/09

    CPC分类号： H02N2/043

    摘要： A flextensional transducer (1 ) that can be stored at room temperature and activated and operated at an elevated temperature in excess of 200°C, comprises (i)an elongate driver (2), (ii)a flextensional housing shell (3) containing the elongate driver, comprising a pair of contact portions (4) located on opposite sides of the housing shell and in mechanical contact with the ends of the driver, and having a different coefficient of thermal expansion from that of the driver, and (iii)thermal compensating members (29); the flextensional housing shell moving by flexing on actuation, the thermal compensating members being located in, or on, parts (17) of the housing shell that move on actuation, and comprising a material having a different coefficient of thermal expansion from that of surrounding parts of the housing shell, such that as the temperature increases up to the said elevated temperature the thermal compensating members expand more or less than the said surrounding parts of the housing shell, causing the housing shell to flex so as to urge the contact portions (4) of the housing shell towards each other to compensate for the greater thermal expansion of the housing relative to that of the driver member (2).

    摘要翻译： 一种可以在室温下储存并在超过200℃的高温下启动和操作的弯张传感器（1）包括（i）细长驱动器（2），（ii）弯曲外壳（3），其包含 所述细长驱动器包括位于所述壳体外壳的相对侧上并且与所述驱动器的端部机械接触并且具有与所述驱动器的热膨胀系数不同的热膨胀系数的一对接触部分（4），以及（iii） 热补偿构件（29）; 所述弹性壳体壳体在致动时通过弯曲而移动，所述热补偿构件位于所述壳体壳体的在致动时移动的部件（17）中或其上，并且包括具有与周围部件的热膨胀系数不同的热膨胀系数的材料 使得随着温度升高到所述升高的温度，所述热补偿构件比所述壳体外壳的所述周围部分更多或更少地膨胀，导致所述壳体壳体弯曲，从而推动所述接触部分（4 ）朝向彼此以补偿壳体相对于驱动器构件（2）的热膨胀的更大的热膨胀。

    NESTED FLEXTENSIONAL TRANSDUCER AND CYLINDRICAL ACTUATOR MODULES
    5.
    发明公开
    NESTED FLEXTENSIONAL TRANSDUCER AND CYLINDRICAL ACTUATOR MODULES 有权
    盒装FLEXTENSIONALER CONVERTER和圆柱致动器模块

    公开(公告)号：EP2208242A2

    公开(公告)日：2010-07-21

    申请号：EP08845429.3

    申请日：2008-10-30

    申请人： QinetiQ Limited

    发明人： RAHMAN, Ahmed, Yehia, Amin, Abdel ,  GORE, Jonathan, Geoffrey ,  LOWRIE, Fiona, Louise ,  MCBRIDE, Richard, Carson

    IPC分类号： H01L41/09 ,  F03G7/06 ,  E21B34/06

    CPC分类号： H02N2/043 ,  E21B23/00 ,  E21B34/066 ,  E21B41/00 ,  F03G7/00 ,  F03G7/065 ,  H02N2/023

    摘要： A multistage flextensional transducer comprises at least one inner elongate driver member (202) within and mechanically coupled to an inner shell (203) that is nested within an outer shell (208); the inner shell comprising a pair of contact portions (204) abutting the driver member and a pair of transmission portions (211) on opposite sides of the inner shell between the contact portions; the outer shell being arranged so that the transmission portions act as bridging driver members between the said inner and outer shells. Flexure of the outer shell being driven, on actuation of the transducer, by movement of the bridging driver members results in amplified motion of transmission members (61). The transducer may act as a push or pull actuator or sensor, may magnify displacement and may employ smart materials as driver members. Also cylindrical modules containing thin flextensional actuators may provide axial displacement in a downhole environment and may move a device axially along a downhole pipe or close a valve opening or inch along the pipe.

    TEMPERATURE COMPENSATING FLEXTENSIONAL TRANSDUCER
    6.
    发明授权
    TEMPERATURE COMPENSATING FLEXTENSIONAL TRANSDUCER 有权
    TEMPERATURAUSGLEICHENDER FLEXTENSIONALER WANDLER

    公开(公告)号：EP2212933B1

    公开(公告)日：2011-08-31

    申请号：EP08844721.4

    申请日：2008-10-30

    申请人： QinetiQ Limited

    发明人： RAHMAN, Ahmed, Yehia, Amin, Abdel ,  GORE, Jonathan, Geoffrey ,  LOWRIE, Fiona, Louise

    IPC分类号： H01L41/09

    CPC分类号： H02N2/043

    摘要： A flextensional transducer (1 ) that can be stored at room temperature and activated and operated at an elevated temperature in excess of 200°C, comprises (i)an elongate driver (2), (ii)a flextensional housing shell (3) containing the elongate driver, comprising a pair of contact portions (4) located on opposite sides of the housing shell and in mechanical contact with the ends of the driver, and having a different coefficient of thermal expansion from that of the driver, and (iii)thermal compensating members (29); the flextensional housing shell moving by flexing on actuation, the thermal compensating members being located in, or on, parts (17) of the housing shell that move on actuation, and comprising a material having a different coefficient of thermal expansion from that of surrounding parts of the housing shell, such that as the temperature increases up to the said elevated temperature the thermal compensating members expand more or less than the said surrounding parts of the housing shell, causing the housing shell to flex so as to urge the contact portions (4) of the housing shell towards each other to compensate for the greater thermal expansion of the housing relative to that of the driver member (2).