Estimating the remaining life of shape memory alloy actuators
    15.
    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