Estimating the remaining life of shape memory alloy actuators
    34.
    发明授权
    Estimating the remaining life of shape memory alloy actuators 有权
    估计形状记忆合金致动器的剩余寿命

    公开(公告)号:US09067526B2

    公开(公告)日:2015-06-30

    申请号:US13616531

    申请日:2012-09-14

    IPC分类号: G08B21/00 B60Q9/00

    CPC分类号: B60Q9/00 F03G7/065

    摘要: Mechanical devices powered by Shape Memory Alloy (SMA) wires or other linear elements offer advantages in automotive applications. Such SMA-powered devices are commonly reliable and long-lived but have a finite lifetime. Measurements of the electrical resistivity of an SMA element during operation of the element may be related to the remaining lifetime of the element. Because operation of SMA elements is promoted by heating the element, usually by passage of an electric current, the resistivity measurements, and hence assessment of SMA element operation, may be made without interruption to the operation of the SMA-powered device and without addition of dedicated sensors.

    摘要翻译: 由形状记忆合金(SMA)电线或其他线性元件供电的机械设备在汽车应用中提供了优势。 这种SMA功率器件通常是可靠且寿命长的,但具有有限的寿命。 在元件操作期间测量SMA元件的电阻率可能与元件的剩余寿命有关。 由于通常通过电流加热元件来促进SMA元件的操作,可以在不中断SMA功率器件的操作的情况下进行电阻率测量,从而评估SMA元件操作,并且不添加 专用传感器

    Composite Bi-Stable Device
    35.
    发明申请
    Composite Bi-Stable Device 有权
    复合双稳态器件

    公开(公告)号:US20130081389A1

    公开(公告)日:2013-04-04

    申请号:US13250248

    申请日:2011-09-30

    IPC分类号: F01B29/10

    摘要: A deformable bi-stable device includes an elastically deformable member having at least two stable configurations and capable of being deformed from a first stable configuration to a second stable configuration, the element passing through an unstable configuration as it is deformed from the first stable configuration to the second stable configuration, and a shape memory polymer layer on or in the elastically deformable member. A method of using this device includes heating the shape memory polymer to a temperature sufficient to reduce the modulus of the shape memory polymer, deforming the deformable member to move from one of the first and second stable configurations to another of the first and second stable configurations, and cooling the device to a temperature sufficient to increase the modulus of the shape memory polymer.

    摘要翻译: 一种可变形的双稳态装置包括具有至少两个稳定构造并且能够从第一稳定构型变形到第二稳定构型的可弹性变形构件,该元件在从第一稳定构型变形时穿过不稳定构型, 第二稳定构型和可弹性变形构件上或其中的形状记忆聚合物层。 使用该装置的方法包括将形状记忆聚合物加热到足以降低形状记忆聚合物的模量的温度,使可变形构件变形从第一和第二稳定构型中的一个移动到第一和第二稳定构型中的另一个 ,并将该装置冷却到足以增加形状记忆聚合物的模量的温度。