公开(公告)号：US09334905B2

公开(公告)日：2016-05-10

申请号：US13447922

申请日：2012-04-16

申请人： Nilesh D. Mankame ,  Shivaram Ac ,  John C. Ulicny

发明人： Nilesh D. Mankame ,  Shivaram Ac ,  John C. Ulicny

IPC分类号： F16D23/02 ,  F16D37/00 ,  F16D23/12 ,  F16D27/01 ,  H02K49/10 ,  H02K21/02

CPC分类号： F16D23/02 ,  F16D23/12 ,  F16D27/01 ,  F16D37/008 ,  H02K21/027 ,  H02K49/104 ,  H02K2213/09

摘要： A clutch for selective transmission of torque and power, utilizing pairs of coded arrays of permanent magnets affixed respectively to the driving member and the driven member. A shape memory alloy actuator brings to driving member and the driven member into proximity to engage the clutch via a higher-order mutual magnetic correspondence between the coded magnetic regions of the permanent magnet arrays. Also provided is a clutch having a magnetorheological fluid between the driving member and the driven member, to increase the torque and power transfer through the fluid when its viscosity is increased by the magnetic field of the arrays in proximity. Sets of corresponding teeth on the driving member and driven member mesh when the rotation of the members is synchronized, providing positive direct drive to prolong the service life of the fluid.

摘要翻译： 用于选择性地传递扭矩和动力的离合器，利用分别固定在驱动构件和被驱动构件上的永磁体编码阵列对。 形状记忆合金致动器通过永磁体阵列的编码磁区之间的较高阶的相互对应的对应关系使驱动构件和从动构件接近以接合离合器。 还提供了一种在驱动构件和从动构件之间具有磁流变流体的离合器，当其粘度随着阵列的磁场接近而增加时，增加通过流体的扭矩和功率传递。 当构件的旋转同步时，在驱动构件和从动构件网上设置相应的齿，提供正直接驱动以延长流体的使用寿命。

公开(公告)号：US09127483B2

公开(公告)日：2015-09-08

申请号：US13570323

申请日：2012-08-09

申请人： Shivaram Ac ,  Vidyashankar R. Buravalla ,  Paul W. Alexander

发明人： Shivaram Ac ,  Vidyashankar R. Buravalla ,  Paul W. Alexander

IPC分类号： F03G7/06 ,  E05B47/00 ,  E05B83/30

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.

摘要翻译： 用于在第一状态和第二状态之间循环部件的装置包括连接到元件并由该元件驱动的元件和复位装置。 该元件由形状记忆合金形成，其中该合金可响应于热能源而在马氏体晶相和奥氏体晶相之间是可转变的。 该装置可以通过元件从其中合金具有马氏体相并且部件处于第一状态的初始状态致动到合金具有奥氏体相并且部件处于第二状态的致动状态。 该装置可以从致动状态复位到复合状态，其中合金从奥氏体转变为马氏体相，同时部件处于第一状态，并且还可以从复位状态复位到初始状态。

公开(公告)号：US20130305705A1

公开(公告)日：2013-11-21

申请号：US13570323

申请日：2012-08-09

申请人： Shivaram AC ,  Vidyashankar R. Buravalla ,  Paul W. Allexander

发明人： Shivaram AC ,  Vidyashankar R. Buravalla ,  Paul W. Allexander

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.

公开(公告)号：US08313108B2

公开(公告)日：2012-11-20

申请号：US12841232

申请日：2010-07-22

申请人： Shivaram Ac ,  Amol G. Thakare ,  Vidyashankar R. Buravalla ,  Srinivasan Suryanarayan

发明人： Shivaram Ac ,  Amol G. Thakare ,  Vidyashankar R. Buravalla ,  Srinivasan Suryanarayan

IPC分类号： B60G17/00 ,  B60G17/015

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。

公开(公告)号：US20130270056A1

公开(公告)日：2013-10-17

申请号：US13447922

申请日：2012-04-16

申请人： Nilesh D. MANKAME ,  John C. Ulicny ,  Shivaram Ac

发明人： Nilesh D. MANKAME ,  John C. Ulicny ,  Shivaram Ac

IPC分类号： F16D27/14

CPC分类号： F16D23/02 ,  F16D23/12 ,  F16D27/01 ,  F16D37/008 ,  H02K21/027 ,  H02K49/104 ,  H02K2213/09

摘要： A clutch for selective transmission of torque and power, utilizing pairs of coded arrays of permanent magnets affixed respectively to the driving member and the driven member. A shape memory alloy actuator brings to driving member and the driven member into proximity to engage the clutch via a higher-order mutual magnetic correspondence between the coded magnetic regions of the permanent magnet arrays. Also provided is a clutch having a magnetorheological fluid between the driving member and the driven member, to increase the torque and power transfer through the fluid when its viscosity is increased by the magnetic field of the arrays in proximity. Sets of corresponding teeth on the driving member and driven member mesh when the rotation of the members is synchronized, providing positive direct drive to prolong the service life of the fluid.

摘要翻译： 用于选择性地传递扭矩和动力的离合器，利用分别固定在驱动构件和被驱动构件上的永磁体编码阵列对。 形状记忆合金致动器通过永磁体阵列的编码磁区之间的较高阶的相互对应的对应关系使驱动构件和从动构件接近以接合离合器。 还提供了一种在驱动构件和从动构件之间具有磁流变流体的离合器，当其粘度随着阵列的磁场接近而增加时，增加通过流体的扭矩和功率传递。 当构件的旋转同步时，驱动构件和从动构件网上的相应齿的组提供正直接驱动以延长流体的使用寿命。

公开(公告)号：US20130089733A1

公开(公告)日：2013-04-11

申请号：US13267047

申请日：2011-10-06

申请人： Rajesh Raghavan ,  Bhaskar Patham ,  Shivaram Ac ,  Arun M. Kumar ,  Hesham A. Ezzat ,  Prakash D. Mangalgiri

发明人： Rajesh Raghavan ,  Bhaskar Patham ,  Shivaram Ac ,  Arun M. Kumar ,  Hesham A. Ezzat ,  Prakash D. Mangalgiri

IPC分类号： B32B27/18 ,  B05D7/00 ,  B05D3/00 ,  B05D5/00

CPC分类号： B05D3/207 ,  B05D5/06 ,  B05D7/16 ,  Y10T428/269

摘要： The geometric stiffness of structural sheet metal panels, such as those employed in motor vehicles, may be increased, without major increase in the mass of the panel, by application of a coating of a structural polymer. However conventional means of applying such a polymer layer require multiple applications to achieve a desired thickness. By incorporating magnetic particles in a resin, and subjecting the resin to a magnetic field as it is applied, the desired thickness may be achieved in a single application. Embodiments appropriate to the application of such a resin to both magnetic and non-magnetic materials are described.

摘要翻译： 通过施加结构聚合物的涂层，可以增加诸如机动车辆中使用的结构金属板的几何刚度，而不会大幅增加面板的质量。 然而，应用这种聚合物层的常规方法需要多种应用以达到所需的厚度。 通过将磁性颗粒结合到树脂中，并在树脂施加时对其施加磁场，可以在一个应用中实现所需的厚度。 描述适用于将这种树脂应用于磁性和非磁性材料的实施例。

公开(公告)号：US20130015931A1

公开(公告)日：2013-01-17

申请号：US13454566

申请日：2012-04-24

申请人： Shivaram AC ,  Vidyashankar R. Buravalla

发明人： Shivaram AC ,  Vidyashankar R. Buravalla

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。

公开(公告)号：US20120211318A1

公开(公告)日：2012-08-23

申请号：US13029248

申请日：2011-02-17

申请人： Shivaram Ac ,  Ashish Khandelwal

发明人： Shivaram Ac ,  Ashish Khandelwal

IPC分类号： F16F9/50

CPC分类号： B60G17/08 ,  B60G2202/20 ,  B60G2202/24 ,  F16F9/34 ,  F16F9/466 ,  F16F2222/06 ,  F16F2224/0258

摘要： A real-time continuous damping module includes a flow channel that is configured to allow fluid to flow between a first chamber and a second chamber of a cylindrical tubular member when a pressurizing device exerts a pressure on the fluid within the first chamber. A variable damper assembly is configured to control a flow of fluid through the flow channel. The variable damper assembly includes a damper configured to variably obstruct an opening of the flow channel. A magnetic shape memory element is configured to variably control a position of the damper within the opening of the flow channel. The magnetic shape memory element exhibits changes in shape when exposed to a magnetic field. An electromagnetic device regulates the magnetic field for variably controlling the position of the damper within the flow channel by changing the shape of the magnetic shape memory element.

摘要翻译： 实时连续阻尼模块包括流动通道，其被配置为当加压装置对第一腔室内的流体施加压力时允许流体在圆柱形管状构件的第一腔室和第二腔室之间流动。 可变风门组件被配置成控制通过流动通道的流体流动。 可变阻尼器组件包括构造成可变地阻塞流动通道的开口的阻尼器。 磁形状记忆元件被配置为可变地控制阻尼器在流动通道的开口内的位置。 磁性形状记忆元件在暴露于磁场时呈现形状变化。 电磁装置通过改变磁性形状记忆元件的形状来调节磁场，用于可变地控制阻尼器在流动通道内的位置。

公开(公告)号：US20120018962A1

公开(公告)日：2012-01-26

申请号：US12841232

申请日：2010-07-22

申请人： Shivaram AC ,  Amol G. Thakare ,  Vidyashankar R. Buravalla ,  Srinivasan Suryanarayan

发明人： Shivaram AC ,  Amol G. Thakare ,  Vidyashankar R. Buravalla ,  Srinivasan Suryanarayan

IPC分类号： B60G17/00 ,  F16F7/00 ,  F16F15/00 ,  F16F3/00

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。

公开(公告)号：US20120272480A1

公开(公告)日：2012-11-01

申请号：US13094874

申请日：2011-04-27

申请人： Shivaram Ac

发明人： Shivaram Ac

IPC分类号： E05D11/10 ,  H01F7/06 ,  H01F7/02

CPC分类号： E05D11/082 ,  E05Y2201/25 ,  E05Y2201/254 ,  E05Y2900/531 ,  F16F9/535 ,  Y10T16/5401

摘要： A hinge is provided for pivotably mounting a first attachment member to a second attachment member. A first member is attached to the first attachment member. A second member pivotably engages the first member and is disposed within the first member. The second member is configured for attachment to the second attachment member. An annular cavity is disposed between the first member and the second member. The annular cavity maintains a spaced relationship between the first member and the second member. A magnetorheological fluid is disposed within the annular cavity. A magnetic field generating member is configured to produce a change in a shear strength of the magnetorheological fluid within the annular cavity. The magnetorheological fluid applies a variable resistance torque between the first member and the second member for controlling a pivoting motion between the first member and the second member.

摘要翻译： 设置有用于将第一附接构件可枢转地安装到第二附接构件的铰链。 第一构件附接到第一附接构件。 第二构件可枢转地接合第一构件并且设置在第一构件内。 第二构件被构造成附接到第二附接构件。 环状空腔设置在第一构件和第二构件之间。 环形空腔在第一构件和第二构件之间保持间隔开的关系。 磁流变流体设置在环形空腔内。 磁场产生部件构造成产生环形空腔内的磁流变流体的剪切强度的变化。 磁流变流体在第一构件和第二构件之间施加可变电阻扭矩，用于控制第一构件和第二构件之间的枢转运动。