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公开(公告)号：US20180142999A1
公开(公告)日：2018-05-24
申请号：US15359860
申请日：2016-11-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alan L. Browne , Nancy L. Johnson , Paul W. Alexander , Geoffrey P. McKnight , Guillermo A. Herrera , Christopher B. Churchill , Andrew C. Keefe , Xiujie Gao
Abstract: A method of testing a SMA element includes connecting the SMA element to a validation tool, and applying an electrical current to the SMA element over a test cycle. A resistance of the SMA element during the test cycle is measured, while the electrical current is being applied. The measured resistance of the SMA element during the test cycle is correlated to an estimated strain value of the SMA element during the test cycle. A temperature of the SMA element during the test cycle is estimated. A stress in the SMA element during the test cycle is estimated from a stress predicting grid, using the estimated strain value and the estimated temperature of the SMA element during the test cycle. The proper functionality of the SMA element may be determined based on the estimated stress in the SMA element.
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公开(公告)号：US20170229990A1
公开(公告)日：2017-08-10
申请号：US15016990
申请日：2016-02-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xiujie Gao , Christopher B. Churchill , Guillermo A. Herrera , Andrew C. Keefe , Paul W. Alexander
Abstract: A slack compensator includes a stator fixedly attachable to a base and a shuttle. The shuttle is selectably movable from a first position on the stator to a second position on the stator. The shuttle is selectably releasably attached to the stator in the first position. The shuttle is to be permanently captured upon reaching the second position. The slack compensator is attachable to an SMA wire for removing slack that develops in the SMA wire during a plurality of break-in cycles.
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Patent Agency Ranking
公开(公告)号：US20150001996A1
公开(公告)日：2015-01-01
申请号：US14487694
申请日：2014-09-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alan L. Browne , Nancy L. Johnson , William B. Carter , Geoffrey P. McKnight , Andrew C. Keefe , Guillermo A. Herrera
CPC classification number: H01L41/09 , F03G7/06 , G05G1/02 , G05G5/06 , H01H5/30 , H01L41/04 , H01L41/0926
Abstract: A reconfigurable bi-stable device includes an elastically deformable panel laterally disposed between and connected to one or more mounting members directly or indirectly connected to opposing ends of the panel, with the panel maintained under compressive force along at least one vector extending between the opposing ends. The compressive force deforms the panel into a one of two stable deformed positions, with the device disposed such that the panel may be moved between each of the two stable deformed positions by application of manual force to one of two opposing faces of the panel. A first shape memory alloy (SMA) or piezo actuator member is connected to the panel, the actuator member being capable of moving the panel from a first one of the two stable deformed positions to a second one of the two stable deformed positions.
Abstract translation: 可重构双稳态装置包括横向设置在直接或间接连接到面板的相对端的一个或多个安装构件之间并且连接到面板的相对端部之间并连接到面板的相对端部的弹性变形板，其中面板沿着在相对端之间延伸的至少一个矢量保持在压缩力 。 压缩力使面板变形为两个稳定的变形位置之一，其中该装置设置成使得面板可以通过对面板的两个相对面之一施加手动力而在两个稳定的变形位置中的每一个之间移动。 第一形状记忆合金（SMA）或压电致动器构件连接到面板，致动器构件能够将面板从两个稳定变形位置中的第一个移动到两个稳定变形位置中的第二个。
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公开(公告)号：US08747264B2
公开(公告)日：2014-06-10
申请号：US14014778
申请日：2013-08-30
Applicant: GM Global Technology Operations LLC
Inventor： Paul W. Alexander , Alan L. Browne , Nancy L. Johnson , Nilesh D. Mankame , Xiujie Gao , Geoffrey P. McKnight , Andrew C. Keefe , Peter Maxwell Sarosi , Christopher P. Henry , Patrick B. Usoro
IPC: F02G5/04
CPC classification number: F03G7/065 , F02G5/04 , F16G1/26 , F16H7/02 , Y02T10/166
Abstract: An energy harvesting system includes a heat engine and a component. The heat engine includes a belt, a first member, and a second member. The belt includes a strip of material and at least one wire at least partially embedded longitudinally in the strip of material. The wire includes a shape memory alloy material. A localized region of the at least one wire is configured to change crystallographic phase between martensite and austenite and either contract or expand longitudinally in response to exposure to a first temperature or a second temperature such that the strip of material corresponding to the localized region also contracts or expands. The first member is operatively connected to the belt and moves with the belt in response to the expansion or contraction of the belt. The component is operatively connected to the first member such that movement of the first member drives the component.
Abstract translation: 能量收集系统包括热机和部件。 热机包括皮带，第一部件和第二部件。 带包括一条材料条和至少部分地沿纵向地嵌入材料条中的线。 导线包括形状记忆合金材料。 所述至少一根导线的局部区域被配置为改变马氏体和奥氏体之间的结晶相，并且响应于暴露于第一温度或第二温度而纵向收缩或膨胀，使得对应于局部区域的材料条也收缩 或扩展。 第一构件可操作地连接到带并响应于带的膨胀或收缩而与带一起移动。 组件可操作地连接到第一构件，使得第一构件的移动驱动构件。
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公开(公告)号：US20140026555A1
公开(公告)日：2014-01-30
申请号：US14014778
申请日：2013-08-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Paul W. Alexander , Alan L. Browne , Nancy L. Johnson , Nilesh D. Mankame , Xiujie Gao , Geoffrey P. McKnight , Andrew C. Keefe , Peter Maxwell Sarosi , Christopher P. Henry , Patrick B. Usoro
CPC classification number: F03G7/065 , F02G5/04 , F16G1/26 , F16H7/02 , Y02T10/166
Abstract: An energy harvesting system includes a heat engine and a component. The heat engine includes a belt, a first member, and a second member. The belt includes a strip of material and at least one wire at least partially embedded longitudinally in the strip of material. The wire includes a shape memory alloy material. A localized region of the at least one wire is configured to change crystallographic phase between martensite and austenite and either contract or expand longitudinally in response to exposure to a first temperature or a second temperature such that the strip of material corresponding to the localized region also contracts or expands. The first member is operatively connected to the belt and moves with the belt in response to the expansion or contraction of the belt. The component is operatively connected to the first member such that movement of the first member drives the component.
Abstract translation: 能量收集系统包括热机和部件。 热机包括皮带，第一部件和第二部件。 带包括一条材料条和至少部分地沿纵向地嵌入材料条中的线。 导线包括形状记忆合金材料。 所述至少一根导线的局部区域被配置为改变马氏体和奥氏体之间的结晶相，并且响应于暴露于第一温度或第二温度而纵向收缩或膨胀，使得对应于局部区域的材料条也收缩 或扩展。 第一构件可操作地连接到带并响应于带的膨胀或收缩而与带一起移动。 组件可操作地连接到第一构件，使得第一构件的移动驱动构件。
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公开(公告)号：US09859834B2
公开(公告)日：2018-01-02
申请号：US15016990
申请日：2016-02-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xiujie Gao , Christopher B. Churchill , Guillermo A. Herrera , Andrew C. Keefe , Paul W. Alexander
Abstract: A slack compensator includes a stator fixedly attachable to a base and a shuttle. The shuttle is selectably movable from a first position on the stator to a second position on the stator. The shuttle is selectably releasably attached to the stator in the first position. The shuttle is to be permanently captured upon reaching the second position. The slack compensator is attachable to an SMA wire for removing slack that develops in the SMA wire during a plurality of break-in cycles.
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公开(公告)号：US10527567B2
公开(公告)日：2020-01-07
申请号：US15359860
申请日：2016-11-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alan L. Browne , Nancy L. Johnson , Paul W. Alexander , Geoffrey P. McKnight , Guillermo A. Herrera , Christopher B. Churchill , Andrew C. Keefe , Xiujie Gao
Abstract: A method of testing a SMA element includes connecting the SMA element to a validation tool, and applying an electrical current to the SMA element over a test cycle. A resistance of the SMA element during the test cycle is measured, while the electrical current is being applied. The measured resistance of the SMA element during the test cycle is correlated to an estimated strain value of the SMA element during the test cycle. A temperature of the SMA element during the test cycle is estimated. A stress in the SMA element during the test cycle is estimated from a stress predicting grid, using the estimated strain value and the estimated temperature of the SMA element during the test cycle. The proper functionality of the SMA element may be determined based on the estimated stress in the SMA element.
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