公开(公告)号：US09021801B2

公开(公告)日：2015-05-05

申请号：US13600337

申请日：2012-08-31

申请人： Xiujie Gao ,  Geoffrey P. McKnight ,  Guillermo A. Herrera ,  Christopher B Churchill ,  Nancy L. Johnson ,  Alan L. Browne ,  Peter Maxwell Sarosi ,  Paul W. Alexander

发明人： Xiujie Gao ,  Geoffrey P. McKnight ,  Guillermo A. Herrera ,  Christopher B Churchill ,  Nancy L. Johnson ,  Alan L. Browne ,  Peter Maxwell Sarosi ,  Paul W. Alexander

IPC分类号： F01B29/10 ,  F02G1/04 ,  F01P7/10 ,  F03G7/06

CPC分类号： F01P7/10 ,  F03G7/06 ,  F03G7/065

摘要： Shape memory alloy (SMA) actuating elements are commonly simpler and of lower mass than alternative actuator designs and may find particular application in the transportation industry. Such SMA-powered devices are usually reliable and long-lived but the phase transformations which occur in the SMA alloy and are responsible for its utility are not totally reversible. This irreversibility, a consequence of irrecoverable strain, may progressively degrade the long-term actuator performance as the irrecoverable strain accumulates over many operating cycles. Methods and devices for compensating for these effects and extending the useful cycle life of SMA actuators are described.

摘要翻译： 形状记忆合金（SMA）致动元件通常比替代致动器设计更简单并且质量更低，并且可以在运输行业中找到特定应用。 这种SMA供电的设备通常是可靠的和长寿命的，但SMA合金中发生的并且对其效用负责的相变不是完全可逆的。 这种不可逆转性是不可恢复的应变的结果，随着不可恢复的应变在许多操作循环中积累，可能逐渐降低长期致动器性能。 描述了用于补偿这些影响并延长SMA致动器的有用循环寿命的方法和装置。

公开(公告)号：US09067526B2

公开(公告)日：2015-06-30

申请号：US13616531

申请日：2012-09-14

申请人： Alan L. Browne ,  Xiujie Gao ,  Nancy L. Johnson ,  Guillermo A. Herrera ,  Christopher B Churchill ,  Geoffrey P. McKnight

发明人： Alan L. Browne ,  Xiujie Gao ,  Nancy L. Johnson ,  Guillermo A. Herrera ,  Christopher B Churchill ,  Geoffrey P. McKnight

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