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117 条记录 (耗时 0.029 秒)

    Receiver/emitter cover utilizing active material actuation
    91.
    发明授权
    Receiver/emitter cover utilizing active material actuation 有权
    接收器/发射器盖利用活性材料致动

    公开(公告)号：US08572895B2

    公开(公告)日：2013-11-05

    申请号：US12181465

    申请日：2008-07-29

    申请人： Craig A. Kollar ,  Xiujie Gao ,  Alan L. Browne ,  Nancy L. Johnson

    发明人： Craig A. Kollar ,  Xiujie Gao ,  Alan L. Browne ,  Nancy L. Johnson

    IPC分类号： H04N7/18

    CPC分类号： G02B23/16

    摘要： A system for protecting an emitter/receiver device, including a cover and an active material actuator operable to selectively cause the cover to move between default protective and open positions, wherein the actuator includes at least one active material element, such as an SMA wire configured to cause the retraction of the cover and present a heating net when activated, and an activation signal source, and preferably further including at least one pulley and/or jack mechanism configured to redirect a displacement force vector, synchronization means, an antagonistic element for biasing the cover towards the protective or open position, and a controller presenting overheating protection through control logic.

    摘要翻译： 一种用于保护发射器/接收器装置的系统，包括盖和活动材料致动器，其可操作以选择性地使盖在默认保护和打开位置之间移动，其中致动器包括至少一个活动材料元件，例如被配置为 导致盖的收缩并且当被激活时呈现加热网，以及激活信号源，并且优选地还包括被配置为重定向位移力矢量的至少一个滑轮和/或插座机构，同步装置，用于偏置的对抗元件 盖子保护或打开位置，以及控制器通过控制逻辑提供过热保护。

    ACTIVE MATERIAL-AUGMENTED VIBRATION WELDING SYSTEM AND METHOD OF USE
    93.
    发明申请
    ACTIVE MATERIAL-AUGMENTED VIBRATION WELDING SYSTEM AND METHOD OF USE 有权
    活性材料增强振动焊接系统及其使用方法

    公开(公告)号：US20110108184A1

    公开(公告)日：2011-05-12

    申请号：US12614462

    申请日：2009-11-09

    申请人： Wayne W. Cai ,  Xiujie Gao ,  Nancy L. Johnson ,  Alan L. Browne

    发明人： Wayne W. Cai ,  Xiujie Gao ,  Nancy L. Johnson ,  Alan L. Browne

    IPC分类号： B29C65/06 ,  B29C65/08

    CPC分类号： B23K20/10 ,  B23K20/26 ,  B29C66/438 ,  B29C66/73921 ,  B29C66/81262

    摘要： A method for controlling welding forces of a weld tip to a work piece during a vibration-welding process includes positioning an Active Material (AM) element adjacently to a welding interface, and varying a property of the AM element to regulate the welding force. The AM element may be disposed between the weld tip and a weld face thereof, or between the work piece and an anvil. The property may be varied as a function of heat generated by the welding process. A property of each of a plurality of AM elements may be independently and selectively varied via an energy source, or passively. A vibration welding system includes a weld tip and an AM element connected adjacently to a welding interface. The system regulates a welding force applied by the weld tip to a work piece during the welding process by varying a property of the AM element.

    摘要翻译： 用于在振动焊接过程中控制焊接尖端与工件的焊接力的方法包括将活性材料（AM）元件相邻地定位到焊接界面，并且改变AM元件的性质以调节焊接力。 AM元件可以设置在焊接尖端和其焊接面之间，或者在工件和砧座之间。 该属性可以随着焊接过程产生的热量的变化而变化。 多个AM元件中的每一个的特性可以经由能量源被动地被选择性地变化。 振动焊接系统包括焊接端和与焊接界面相邻连接的AM元件。 该系统通过改变AM元件的特性来调节在焊接过程期间由焊嘴施加到工件的焊接力。

    Active material actuator assembly
    94.
    发明申请
    Active material actuator assembly 有权
    活动材料执行器组件

    公开(公告)号：US20080034750A1

    公开(公告)日：2008-02-14

    申请号：US11501417

    申请日：2006-08-09

    申请人： Xiujie Gao ,  Alan L. Browne ,  Nancy L. Johnson ,  Ukpai I. Ukpai

    发明人： Xiujie Gao ,  Alan L. Browne ,  Nancy L. Johnson ,  Ukpai I. Ukpai

    IPC分类号： F01B29/10

    CPC分类号： F03G7/065 ,  H02N2/02 ,  H02N2/10

    摘要： Active material actuator assemblies are provided that enable simplified control systems and faster actuator cycle times. A movable member is provided that has multiple active material components operatively connected to it. The active material components are separately selectively activatable for moving the movable member. Movement of the movable member via activation of a first of the active material components triggers activation of the second active material component to further move the movable member. Alternatively or in addition, previously activated active material components are protected from undesired stretching during activation of another active material component or, when desired, an active material component may be reset via activation of another of the active material components in order to prepare it for subsequent activation.

    摘要翻译： 提供了主动材料致动器组件，其实现简化的控制系统和更快的致动器循环时间 提供了具有可操作地连接到其上的多个活性材料部件的可移动部件。 活性材料组分可分开选择性活化，以移动可动件。 通过激活第一活性材料组件来移动可移动部件触发第二活性材料部件的启动，以进一步移动可移动部件。 或者或另外，预先活化的活性材料组分在另一种活性材料组分的活化期间被保护而不受不期望的拉伸，或者当需要时，活性材料组分可以通过另一种活性材料组分的活化来复位，以便随后 激活。

    Vehicle energy harvesting device having discrete sections of shape memory alloy
    95.
    发明授权
    Vehicle energy harvesting device having discrete sections of shape memory alloy 有权
    具有形状记忆合金分立部分的车辆能量收集装置

    公开(公告)号：US08857174B2

    公开(公告)日：2014-10-14

    申请号：US12947870

    申请日：2010-11-17

    申请人： Paul W. Alexander ,  Alan L. Browne ,  Patrick B. Usoro ,  Xiujie Gao

    发明人： Paul W. Alexander ,  Alan L. Browne ,  Patrick B. Usoro ,  Xiujie Gao

    IPC分类号： F01B29/10 ,  F02G1/04 ,  F02G5/04

    CPC分类号： F02G5/04 ,  Y02T10/166

    摘要： An energy harvesting system comprises a first region having a first temperature and a second region having a second temperature. A heat engine is configured for converting thermal energy to mechanical energy. The heat engine includes a plurality of discrete elements of a shape memory alloy each having a crystallographic phase changeable between austenite and martensite in response to a temperature difference between the first region and the second region. At least one member of the heat engine is driven to rotate about a first axis by the phase change of the plurality of discrete elements.

    摘要翻译： 能量收集系统包括具有第一温度的第一区域和具有第二温度的第二区域。 热机被配置为将热能转换成机械能。 热引擎包括形状记忆合金的多个离散元件，每个元件具有响应于第一区域和第二区域之间的温度差而在奥氏体和马氏体之间具有可变化的结晶相。 通过多个离散元件的相位变化，驱动热发动机的至少一个构件绕第一轴旋转。

    METHOD FOR POSITION FEEDBACK BASED CONTROL FOR OVERLOAD PROTECTION
    98.
    发明申请
    METHOD FOR POSITION FEEDBACK BASED CONTROL FOR OVERLOAD PROTECTION 有权
    用于过载保护的位置反馈控制方法

    公开(公告)号：US20100332035A1

    公开(公告)日：2010-12-30

    申请号：US12814841

    申请日：2010-06-14

    申请人： Xiujie Gao ,  Lei Hao ,  Paul W. Alexander ,  Alan L. Browne ,  Derek L. Patterson ,  Mark A. Voss

    发明人： Xiujie Gao ,  Lei Hao ,  Paul W. Alexander ,  Alan L. Browne ,  Derek L. Patterson ,  Mark A. Voss

    IPC分类号： G05B9/02

    CPC分类号： G05B9/02

    摘要： A method for executing mechanical overload protection to prevent commanding a control signal to a linear actuator that may mechanically overload the linear actuator when an overload condition of the linear actuator is detected, the linear actuator utilized for controlling a movable element associated with the linear actuator responsive to the control signal, includes monitoring an overload condition based on position change of the movable element associated with the linear actuator during an integration period and excess energy during the integration period, de-energizing the linear actuator when an overload condition has been detected, monitoring an overload retry counter based on the number of cycles the overload condition is detected, comparing the overload retry counter to an overload retry threshold, an reenergizing the linear actuator when the overload retry counter is less than the overload retry threshold and maintaining de-energizing of the linear actuator when the overload retry counter is at least the overload retry threshold.

    摘要翻译： 一种用于执行机械过载保护的方法，以防止在检测到线性致动器的过载状况时对线性致动器进行机械过载的线性致动器的控制信号，用于控制与线性致动器相关联的可移动元件的线性致动器响应 对于控制信号，包括在积分期间基于与线性致动器相关联的可移动元件的位置变化以及在积分期间内的过剩能量来监视过载状态，当已经检测到过载状况时，使线性致动器断电 基于检测到过载条件的循环次数的过载重试计数器，将过载重试计数器与过载重试阈值进行比较，当过载重试计数器小于过载重试阈值并重新激活线性致动器时， 线性执行机构过载时 尝试计数器至少是过载重试阈值。