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公开(公告)号：US20130015931A1
公开(公告)日：2013-01-17
申请号：US13454566
申请日：2012-04-24
IPC分类号： H01F7/08
CPC分类号： F03G7/065
摘要： An actuator adaptable for tunable stiffness control is provided, including a stiffness element including a smart material, and a magnetically actuated biasing element. The biasing element is configured to provide a non-linear or variable bias force on the stiffness element. The smart material may be a shape memory alloy, and the biasing element may be configured to include a permanent magnet, an electromagnet, a magnetic shape memory alloy, or a combination of these. The stiffness element and the biasing element of the actuator may be configured in parallel with each other, or may be configured in series with each other. The bias force may be provided in response to an input defined by one or more of fatigue, functional degradation, aging, shakedown, elongation, and operating environment of the stiffness element of the actuator, or defined by an operating characteristic of the actuator or a device controlled by the actuator.
摘要翻译： 提供了适用于可调节刚度控制的致动器，包括包括智能材料的刚度元件和磁致动偏置元件。 偏置元件构造成在刚度元件上提供非线性或可变偏置力。 智能材料可以是形状记忆合金，并且偏置元件可以被配置为包括永磁体，电磁体，磁形记忆合金或它们的组合。 致动器的刚度元件和偏置元件可以彼此并联配置，或者可以彼此串联配置。 偏置力可以响应于由致动器的刚度元件的疲劳，功能退化，老化，松动，伸长和操作环境中的一个或多个所限定的输入而提供，或由致动器的操作特性或 设备由执行器控制。
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公开(公告)号：US20120018962A1
公开(公告)日：2012-01-26
申请号：US12841232
申请日：2010-07-22
CPC分类号： B60G17/021 , B60G17/025 , B60G2202/42 , F16F3/04 , F16F7/082 , F16F2224/0258
摘要： A stiffness control system and apparatus includes one or more stiffness elements which are each activated by a smart actuator including a smart material which may be one of a shape memory alloy (SMA), a magnetorheological (MR) fluid, an electrorheological (ER) fluid, and a piezo-stack. The stiffness control system includes a first and second interface adaptable to transmit input loads and a plurality of stiffness elements. A first stiffness element is operatively connected to the first and second interfaces and is continuously responsive to a change in system operating characteristics including input loads. A second stiffness element is selectively activated by the smart actuator so as to selectively respond to a change in system conditions. The continuous response of the first stiffness element can be selectively combined with the activated response of the second stiffness element to dynamically control system stiffness.
摘要翻译： 刚度控制系统和装置包括一个或多个刚度元件，每个刚度元件由智能致动器激活，智能致动器包括智能材料，该智能材料可以是形状记忆合金（SMA），磁流变（MR）流体，电流变（ER）流体 ，和压电叠层。 刚度控制系统包括适于传递输入负载的第一和第二接口以及多个刚度元件。 第一刚度元件可操作地连接到第一和第二接口，并且连续地响应于包括输入负载的系统操作特性的变化。 第二刚度元件由智能致动器选择性地启动，以便选择性地响应于系统条件的变化。 可以选择性地将第一刚度元件的连续响应与第二刚度元件的激活响应组合以动态地控制系统刚度。
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公开(公告)号：US20130305705A1
公开(公告)日：2013-11-21
申请号：US13570323
申请日：2012-08-09
IPC分类号： F03G7/06
CPC分类号： E05B47/0009 , E05B83/30 , F03G7/065
摘要： A device for cycling a component between a first condition and a second condition includes an element and a reset apparatus connected to and driven by the element. The element is formed from a shape memory alloy, wherein the alloy is transitionable between a martensite crystallographic phase and an austenite crystallographic phase in response to a thermal energy source. The apparatus is actuatable by the element from an initial state in which the alloy has the martensite phase and the component is in the first condition, to an actuated state in which the alloy has the austenite phase and the component is in the second condition. The apparatus is resettable from the actuated state to a reset state in which the alloy transitions from the austenite to the martensite phase while the component is in the first condition, and further resettable from the reset state to the initial state.
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