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154 条记录 (耗时 0.044 秒)

    Method of starting a heat engine
    25.
    发明授权
    Method of starting a heat engine 有权
    起动热机的方法

    公开(公告)号：US08701405B2

    公开(公告)日：2014-04-22

    申请号：US12947924

    申请日：2010-11-17

    申请人： Paul W. Alexander ,  Alan L. Browne ,  Nancy L. Johnson ,  Patrick B. Usoro ,  Nilesh D. Mankame ,  Xiujie Gao

    发明人： Paul W. Alexander ,  Alan L. Browne ,  Nancy L. Johnson ,  Patrick B. Usoro ,  Nilesh D. Mankame ,  Xiujie Gao

    IPC分类号： F01B29/10

    CPC分类号： F03G7/065

    摘要： A method of starting a heat engine includes exposing an element of the heat engine to a source of thermal energy provided by a temperature difference between a heat source having a first temperature and a heat sink having a second temperature that is lower than the first temperature. The element is formed from a first shape memory alloy having a crystallographic phase changeable between austenite and martensite at a first transformation temperature in response to the temperature difference between the heat source and the heat sink. The method further includes changing the crystallographic phase of the first shape memory alloy to thereby convert thermal energy to mechanical energy, and inducing initial movement of the element in a desired operational direction to thereby start the heat engine.

    摘要翻译： 启动热机的方法包括将热机的元件暴露于具有第一温度的热源和具有低于第一温度的第二温度的散热器之间的温度差的热能源。 该元件由第一形状记忆合金形成，该合金具有响应于热源和散热器之间的温差而在第一相变温度下具有在奥氏体和马氏体之间变化的结晶相。 该方法还包括改变第一形状记忆合金的结晶相，从而将热能转化为机械能，并引起元件在期望的操作方向的初始移动，从而起动热机。

    Active material based suction cups
    28.
    发明授权
    Active material based suction cups 有权
    活性物质吸盘

    公开(公告)号：US08096537B2

    公开(公告)日：2012-01-17

    申请号：US11536009

    申请日：2006-09-28

    申请人： Alan L. Browne ,  Nancy L. Johnson ,  Robin Stevenson ,  Nilesh D. Mankame

    发明人： Alan L. Browne ,  Nancy L. Johnson ,  Robin Stevenson ,  Nilesh D. Mankame

    IPC分类号： B25B11/00

    CPC分类号： F16B47/00 ,  F16B1/0014

    摘要： Remotely engageable and releasable suction cups include a pliable body and an active material in operative communication with the pliable body and configured to create and/or eliminate a partial vacuum through the activation of stiffness or geometry changes in the active material. Suitable active materials include shape memory materials such as shape memory alloys, ferromagnetic shape memory alloys, and shape memory polymers (SMP). A second class of active materials include materials that exhibit a change in at least one attribute when subjected to an applied field but revert back to their original state upon removal of the applied field. Active materials in this category include piezoelectric materials, electroactive polymers (EAP), magnetorheological polymers, and the like.

    摘要翻译： 可远程接合和可释放的吸盘包括柔韧的主体和与柔韧体可操作地连通的活动材料，并被配置成通过激活活性材料的刚性或几何形状的变化来产生和/或消除部分真空。 合适的活性材料包括形状记忆材料，例如形状记忆合金，铁磁形状记忆合金和形状记忆聚合物（SMP）。 第二类活性材料包括当受到施加的场而在至少一个属性中变化但在移除所施加的场时恢复到其原始状态的材料。 该类活性物质包括压电材料，电活性聚合物（EAP），磁流变聚合物等。

    Mechanical system with an active materials-based actuator
    29.
    发明授权
    Mechanical system with an active materials-based actuator 有权
    机械系统与基于活性材料的执行机构

    公开(公告)号：US08032238B2

    公开(公告)日：2011-10-04

    申请号：US12130227

    申请日：2008-05-30

    申请人： Nilesh D. Mankame ,  Alan L. Browne ,  Paul W. Alexander ,  Nancy L. Johnson ,  Norman K. Bucknor

    发明人： Nilesh D. Mankame ,  Alan L. Browne ,  Paul W. Alexander ,  Nancy L. Johnson ,  Norman K. Bucknor

    IPC分类号： G06F19/00

    CPC分类号： G05B11/32

    摘要： A mechanical system selectively imparts a prescribed motion to an output load using two or more actuators, including at least one having an active material element. The output load can be a locking member when the system is a vehicle transmission, a shuttle car of a linear system, or another device. A controller determines a total motive force required for imparting the prescribed motion, and selectively commands a combination of the actuators to provide the total motive force, apportioning the total motive force between the various actuators to optimize the performance of the system. An algorithm determines which combination of the actuators is the most suitable in moving the output load, and continuously modified this combination as needed as the output load is moved. The other actuator or actuators are then selectively energized as needed to provide the total motive force depending on this suitability determination.

    摘要翻译： 机械系统使用两个或更多个致动器选择性地向输出负载施加规定的运动，包括至少一个具有活性材料元件的致动器。 当系统是车辆传动装置时，输出负载可以是锁定构件，线性系统的穿梭车或另一装置。 控制器确定用于施加规定运动所需的总动力，并且选择性地命令致动器的组合以提供总动力，分配各种致动器之间的总动力，以优化系统的性能。 算法确定致动器的哪个组合最适合于移动输出负载，并且在输出负载移动时根据需要连续地修改该组合。 然后根据需要选择性地激励其他致动器或致动器，以根据这种适用性确定提供总动力。