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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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公开(公告)号：US08997563B2
公开(公告)日：2015-04-07
申请号：US13750441
申请日：2013-01-25
Applicant: GM Global Technology Operations LLC
Inventor： Richard J. Skurkis , Guillermo A. Herrera , Nancy L. Johnson , Alan L. Browne , Nicholas W. Pinto, IV
CPC classification number: G01N27/041
Abstract: A sensor system includes a housing defining a cavity, an actuator formed from an alloy transitionable between first and second states, a plunger attached to the actuator, and a resilient member configured for translating the plunger within the cavity. The plunger is not translatable during a first condition in which a coating of debris is disposed on the housing as the alloy transitions between the first and second states to define a first stress on the actuator. The plunger is translatable during a second condition in which the housing is substantially free from the coating as the alloy transitions to define a second stress on the actuator that is less than the first stress. The alloy transitions from the first to the second state at a first transformation temperature during the first condition, and at a second transformation temperature that is less than the first temperature during the second condition.
Abstract translation: 传感器系统包括限定空腔的壳体，由在第一和第二状态之间可转换的合金形成的致动器，附接到致动器的柱塞以及被配置为将柱塞平移在空腔内的弹性构件。 当合金在第一状态和第二状态之间转变以在致动器上限定第一应力时，在第一状态下，柱塞不能平移，其中在壳体上布置有一层碎屑。 柱塞可在第二状态下平移，在该第二状态下，当合金转变以在致动器上限定小于第一应力的第二应力时壳体基本上不含涂层。 该合金在第一条件下以第一相变温度从第一状态转变到第二状态，并且在第二条件期间的第二转变温度小于第一温度。
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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：US20140211826A1
公开(公告)日：2014-07-31
申请号：US13750441
申请日：2013-01-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Richard J. Skurkis , Guillermo A. Herrera , Nancy L. Johnson , Alan L. Browne , Nicholas W. Pinto, IV
IPC: G01N25/00
CPC classification number: G01N27/041
Abstract: A sensor system includes a housing defining a cavity, an actuator formed from an alloy transitionable between first and second states, a plunger attached to the actuator, and a resilient member configured for translating the plunger within the cavity. The plunger is not translatable during a first condition in which a coating of debris is disposed on the housing as the alloy transitions between the first and second states to define a first stress on the actuator. The plunger is translatable during a second condition in which the housing is substantially free from the coating as the alloy transitions to define a second stress on the actuator that is less than the first stress. The alloy transitions from the first to the second state at a first transformation temperature during the first condition, and at a second transformation temperature that is less than the first temperature during the second condition.
Abstract translation: 传感器系统包括限定空腔的壳体，由在第一和第二状态之间可转换的合金形成的致动器，附接到致动器的柱塞以及被配置为将柱塞平移在空腔内的弹性构件。 当合金在第一状态和第二状态之间转变以在致动器上限定第一应力时，在第一状态下，柱塞不能平移，其中在壳体上布置有一层碎屑。 柱塞可在第二状态下平移，在该第二状态下，当合金转变以在致动器上限定小于第一应力的第二应力时壳体基本上不含涂层。 该合金在第一条件下以第一相变温度从第一状态转变到第二状态，并且在第二条件期间的第二转变温度小于第一温度。
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Patent Agency Ranking
公开(公告)号：US20150323424A1
公开(公告)日：2015-11-12
申请号：US14271118
申请日：2014-05-06
Applicant: GM Global Technology Operations LLC
Inventor： Alan L. Browne , Xiujie Gao , Nancy L. Johnson , Christopher B. Churchill , Guillermo A. Herrera , Geoffrey P. McKnight
IPC: G01M99/00
CPC classification number: G01M99/007 , F03G7/06 , F03G7/065 , G01M99/008 , G03B2205/0076
Abstract: A method of testing a shape memory alloy (SMA) actuated device includes cyclically operating the device. The method further includes determining a number of cycles in a functional life of the device based on observations of the device during the cyclical operation. The functional life is a range of consecutive cycles of operation of the device beginning with a first cycle during which the device performs within a specified limit. The functional life is immediately followed by a cycle during which the device performs outside of the specified limit. The method still further includes applying a progressive substitution sub-process to identify an opportunity to increase the number of cycles in the functional life of the device.
Abstract translation: 测试形状记忆合金（SMA）致动装置的方法包括循环地操作该装置。 该方法还包括基于在周期性操作期间设备的观察来确定设备的功能寿命中的周期数。 功能寿命是器件从指定限制内执行的第一个周期开始的连续操作循环的范围。 功能寿命紧随其后的是设备执行超出规定限制的周期。 该方法还包括应用逐行替换子过程来识别增加设备的功能寿命中的循环次数的机会。
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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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公开(公告)号：US09267493B2
公开(公告)日：2016-02-23
申请号：US13648307
申请日：2012-10-10
Applicant: GM Global Technology Operations LLC
Inventor： Alan L. Browne , Paul W. Alexander , Nancy L. Johnson , Xiujie Gao , Nilesh D. Mankame , Guillermo A. Herrera , Geoffrey P. McKnight
IPC: F03G7/06
CPC classification number: F03G7/06
Abstract: Some on-vehicle devices, such as air dams, air spoilers, and HVAC system baffles, may have movable components that are pulled from one position to another by shrinkage of a linear shape memory alloy (SMA) actuator. Upon an activation signal, the shrinkage of the SMA actuator occurs when it is resistance heated by an electrical current. It is found that useful information concerning the overall intended operation of the on-vehicle device may be obtained by computer analysis of the temporal variation of both current flow through the actuator and its electrical resistance as it is heated to perform its function in the device. A comparison of present current flow and variation of resistance, during activation of the device, with prescribed stored values can reveal malfunction of components of the device as it is being used, in place, on the vehicle.
Abstract translation: 一些车载设备，例如空气坝，空气扰流器和HVAC系统挡板，可以具有通过线性形状记忆合金（SMA）致动器的收缩从一个位置拉动到另一个位置的可移动部件。 在激活信号时，当SMA电阻被电流加热时，SMA致动器的收缩发生。 发现关于车载设备的总体预期操作的有用信息可以通过对通过致动器的电流的时间变化及其被加热以在其中执行其功能的电阻的计算机分析来获得。 在设备激活期间，当前电流和电阻变化与规定的存储值进行比较可以显示设备在组件被部署在车辆上时的故障。
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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：US09588020B2
公开(公告)日：2017-03-07
申请号：US14271118
申请日：2014-05-06
Applicant: GM Global Technology Operations LLC
Inventor： Alan L. Browne , Xiujie Gao , Nancy L. Johnson , Christopher B. Churchill , Guillermo A. Herrera , Geoffrey P. McKnight
CPC classification number: G01M99/007 , F03G7/06 , F03G7/065 , G01M99/008 , G03B2205/0076
Abstract: A method of testing a shape memory alloy (SMA) actuated device includes cyclically operating the device. The method further includes determining a number of cycles in a functional life of the device based on observations of the device during the cyclical operation. The functional life is a range of consecutive cycles of operation of the device beginning with a first cycle during which the device performs within a specified limit. The functional life is immediately followed by a cycle during which the device performs outside of the specified limit. The method still further includes applying a progressive substitution sub-process to identify an opportunity to increase the number of cycles in the functional life of the device.
Abstract translation: 测试形状记忆合金（SMA）致动装置的方法包括循环地操作该装置。 该方法还包括基于在周期性操作期间设备的观察来确定设备的功能寿命中的周期数。 功能寿命是器件从指定限制内执行的第一个周期开始的连续操作循环的范围。 功能寿命紧随其后的是设备执行超出规定限制的周期。 该方法还包括应用逐行替换子过程来识别增加设备的功能寿命中的循环次数的机会。
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