Method and apparatus for increasing and modulating the yield shear stress of electrorheological fluids
    111.
    发明申请
    Method and apparatus for increasing and modulating the yield shear stress of electrorheological fluids 有权
    用于增加和调节电流变流体的屈服剪切应力的方法和装置

    公开(公告)号:US20030089596A1

    公开(公告)日:2003-05-15

    申请号:US10007575

    申请日:2001-11-09

    IPC分类号: B01J019/08

    摘要: A method for increasing and/or modulating the yield shear stress of an electrorheological fluid includes applying a sufficient electric field to the fluid to cause the formation of chains of particles, and then applying a sufficient pressure to the fluid to cause thickening or aggregation of the chains. An apparatus for increasing and/or modulating the transfer or force or torque between two working structures includes an electrorheological fluid and electrodes through which an electric field is applied to the fluid such that particles chains of particles are formed in the fluid and, upon application of pressure to the fluid, the chains thicken or aggregate and improve the force or torque transmission.

    摘要翻译: 用于增加和/或调节电流变流体的屈服剪切应力的方法包括向流体施加足够的电场以引起颗粒链的形成,然后向流体施加足够的压力以引起增稠或聚集 链条 用于增加和/或调节两个工作结构之间的转移或力或扭矩的装置包括电流变流体和电极,通过电极将电场施加到流体上,使得粒子的颗粒链在流体中形成,并且在应用 对流体的压力,链条增厚或聚集,并改善力或扭矩传递。

    Electro-rheological fluid damper control system
    112.
    发明授权
    Electro-rheological fluid damper control system 失效
    电流变流体阻尼器控制系统

    公开(公告)号:US6105420A

    公开(公告)日:2000-08-22

    申请号:US266906

    申请日:1994-06-27

    申请人: Takeshi Kimura

    发明人: Takeshi Kimura

    摘要: An electro-rheological (ER) fluid damper control system employs fuzzy logic to attain real time control in a highly responsive manner. The ER fluid damper is interposed in a vehicle between its sprung mass (vehicle body) and unsprung mass (suspension). Signals corresponding to the velocity of the sprung mass and the relative velocity between the sprung and unsprung masses are generated by pairs of accelerometers and electronic integrators. A fuzzy rule, taking into account weighted values of these input signals, is applied to the signals to determine an output value which, in turn, establishes a control signal for application to the electrodes of the ER fluid damper. As the velocity signals change, the voltage applied to the electrodes also changes, thus adjusting the fluid viscosity and mechanical responsiveness of the ER fluid damper.

    摘要翻译: 电流变(ER)流体阻尼器控制系统采用模糊逻辑以高响应的方式实现实时控制。 ER流体阻尼器介于其悬挂质量(车体)和非悬挂质量(悬架)之间的车辆中。 对应于簧上质量的速度的信号和簧上和非簧载质量之间的相对速度由加速度计和电子积分器对产生。 考虑到这些输入信号的加权值的模糊规则被应用于信号以确定输出值,该输出值又建立用于施加到ER流体阻尼器的电极的控制信号。 随着速度信号的变化,施加到电极上的电压也发生变化,从而调节了ER流体阻尼器的流体粘度和机械响应性。

    Apparatus mountings providing at least one axis of movement with damping
    113.
    发明授权
    Apparatus mountings providing at least one axis of movement with damping 失效
    设备安装件提供具有阻尼的至少一个运动轴线

    公开(公告)号:US5944152A

    公开(公告)日:1999-08-31

    申请号:US624587

    申请日:1996-04-08

    CPC分类号: F16F9/12 F16F9/532

    摘要: The disclosure relates to a viscous damper of the labyrinth ring type for incorporation in a mounting for a TV or video camera for damping pan or tilt movement of the camera. The damper has a stator (10) having a multiplicity of upstanding concentric annular fins (12) and a rotor (17) having a corresponding multiplicity of concentric annular fins (32) projecting downwardly which interleaf with clearance with the upstanding flanges of the stator, the space between the fins being filled with a viscous fluid to provide a resistance to relative movement between the rotor and stator. The rotor is adjusted with respect to the stator by a motor driven lead screw. A speed sensor measures speed of the rotor with respect to the stator and torque applied to the camera by the hand control to pan or tilt the camera is measured by a strain gauge associated with the hand control. A control system is provided for the motor embodying a microprocessor preprogrammed with one or more algorithms coordinating torque and speed. Thus the viscous damper may be controlled to provide a resistance torque to movement which rises generally linearly with speed as detected by the speed sensor to a certain level whereafter the resistance is maintained constant.

    摘要翻译: PCT No.PCT / GB94 / 02251 Sec。 371日期:1996年4月8日 102(e)日期1996年4月8日PCT 1994年10月14日PCT PCT。 公开号WO95 / 10728 日期1995年4月20日本公开涉及一种迷宫环式粘性阻尼器,用于结合在用于电视或摄像机的安装件中,用于阻尼相机的摇摄或倾斜运动。 阻尼器具有定子(10),其具有多个直立的同心环形翅片(12)和转子(17),转子(17)具有向下突出的相应多个同心环形翅片(32),与定子的直立凸缘间隙具有间隙, 翅片之间的空间填充有粘性流体,以提供对转子和定子之间的相对运动的阻力。 通过马达驱动的导螺杆相对于定子调节转子。 速度传感器测量转子相对于定子的速度,并且通过手动控制来施加到照相机的平移或倾斜的相机的扭矩由与手动控制相关联的应变仪测量。 提供了一种控制系统,用于实施微处理器的电动机,该微处理器预先编程有一个或多个协调扭矩和速度的算法。 因此,可以控制粘性阻尼器以向由速度传感器检测到的速度大体上线性地上升到一定水平的运动的阻力矩,此后电阻保持恒定。

    Vibration damping devices
    115.
    发明授权
    Vibration damping devices 失效
    振动阻尼装置

    公开(公告)号:US5477946A

    公开(公告)日:1995-12-26

    申请号:US302446

    申请日:1994-09-12

    摘要: A vibration damping device comprises two cylindrical and flexible membrane members liquid-tightly connected at its end portion to respective end portion of a piston member and at its other end portions to respective face plates, a connecting member connecting the face plates to each other to form a closed chamber, a liquid filled in the closed chamber, and fastening members arranged onto the piston member and face plate, respectively. Moreover, at least one restricted passage is formed in the piston member or the connecting member. When an electrorheological fluid is used as a liquid, electrodes are arranged on opposed walls of the restricted passage.

    摘要翻译: 减振装置包括两个圆柱形和柔性的薄膜构件,其两端在其端部与活塞构件的相应端部液密地连接,并在其另一端部分分别连接到相应的面板,连接构件将面板彼此连接以形成 封闭室,填充在封闭室中的液体以及分别布置在活塞构件和面板上的紧固构件。 此外,在活塞构件或连接构件中形成至少一个限制通道。 当电流变流体用作液体时,电极被布置在限制通道的相对的壁上。

    Vibration damping device
    116.
    发明授权
    Vibration damping device 失效
    减震装置

    公开(公告)号:US5366048A

    公开(公告)日:1994-11-22

    申请号:US226365

    申请日:1994-04-12

    摘要: A vibration damping device comprises two cylindrical and flexible membrane members, a restricted passage constituting member connected at both end portions to these membrane members, two face plates connected at their end portion to the membrane members, a closed chamber defined by these members and face plates, a rigid member connecting both the face plates to each other at inside or outside of the closed chamber, a fluid filled in the closed chamber, and a fastening member disposed at each side of the restricted passage constituting member and the face plate.

    摘要翻译: 减振装置包括两个圆柱形和柔性膜构件,在两个端部连接到这些膜构件的限制通道构成构件,在其端部连接到膜构件的两个面板,由这些构件和面板限定的封闭腔 ,在封闭室的内部或外部将两个面板彼此连接的刚性构件,填充在封闭室中的流体和设置在限制通道构成构件和面板的每一侧的紧固构件。

    Adjustable dampers using electrorheological fluids
    117.
    发明授权
    Adjustable dampers using electrorheological fluids 失效
    使用电流变流体的可调阻尼器

    公开(公告)号:US5259487A

    公开(公告)日:1993-11-09

    申请号:US913118

    申请日:1992-07-14

    申请人: Nicholas Petek

    发明人: Nicholas Petek

    IPC分类号: B60G17/015 F16F9/53 F16F15/03

    CPC分类号: F16F9/532

    摘要: Adjustable dampers using electrorheological (ER) fluids comprise one or more annular ER fluid transfer ducts in fluid communication with fluid chambers on opposite sides of the damper pistons. Each duct has one or more contoured surfaces or bands along a portion of the length of one or both walls of the ducts providing one or more annular constricted working areas through which the ER fluid is forced when displaced by movement of the pistons. By selectively applying a voltage/electric field across the primary working areas, the flow resistance of the ER fluid passing through the primary working area is increased which increases the damping force of the dampers.

    Piezo-actuator's displacement magnifying mechanism
    118.
    发明授权
    Piezo-actuator's displacement magnifying mechanism 失效
    PIEZO执行器的位移放大机制

    公开(公告)号:US5233834A

    公开(公告)日:1993-08-10

    申请号:US782227

    申请日:1991-10-24

    摘要: A piezo-actuator's displacement magnifying mechanism includes a first cylinder and a second cylinder which is smaller in diameter than the first cylinder and communicates with the same. A plunger is slidably mounted in the first cylinder. The plunger is moved by a piezo-actuator in the first cylinder when a predetermined voltage is applied to the piezo-actuator to cause the same to expand and contract. A piston is slidably mounted in the second cylinder. A reservoir is communicating with the first cylinder. A hydraulic fluid is received in the first and the second cylinder and the reservoir. The hydraulic fluid is variable in viscosity in response to electric fields to which the fluid is subjected. A fluid passage is provided between the first cylinder and the reservoir for compensating for thermal expansion/contraction of the fluid. An electrode is provided for subjecting the hydraulic fluid to electric fields in the passage according to an instruction for applying the voltage to the piezo-actuator.

    摘要翻译: 压电致动器的位移放大机构包括第一气缸和第二气缸,其直径小于第一气缸并与其连通。 柱塞可滑动地安装在第一气缸中。 当预定电压施加到压电致动器以使其膨胀和收缩时,柱塞由第一气缸中的压电致动器移动。 活塞可滑动地安装在第二气缸中。 一个储存器与第一个气缸连通。 液压流体容纳在第一和第二气缸和储存器中。 液压流体响应于流体所经受的电场而具有可变的粘度。 流体通道设置在第一气缸和储液器之间,用于补偿流体的热膨胀/收缩。 提供电极,用于根据向压电致动器施加电压的指令使液压流体经受通道中的电场。

    Electro-rheological valve
    119.
    发明授权
    Electro-rheological valve 失效
    电流变阀

    公开(公告)号:US5158109A

    公开(公告)日:1992-10-27

    申请号:US667328

    申请日:1991-03-11

    摘要: A general electro-rheological valve is disclosed used in controlling the flow of fluids in a variety of applications. The valve comprises an inlet in communication with a fluid source, an outlet for transporting the fluid out of said valve, and an oscillating valve member for opening and closing off said inlet. The valve member has a cavity containing an electro-rheological fluid, a perforated electrode member emersed in the electro-rheological fluid within the cavity, and means for electrifying the perforated electrode member such that the electro-rheological fluid within the electrode solidifies, thereby locking the position of the valve member relative to the electrode. In this manner, the valve member, which oscillates with respect to the perforated electrode member, can be frozen in an open, closed, or intermediate position with respect to the inlet. The valve member thereby controls the level of fluid flow through the valve.

    摘要翻译: 公开了用于控制各种应用中的流体流动的一般电流变阀。 阀包括与流体源连通的入口,用于将流体输送出所述阀的出口和用于打开和关闭所述入口的摆动阀构件。 阀构件具有包含电流变流体的腔,在空腔内的电流变流体中的穿孔电极构件,以及用于使多孔电极构件带电的装置,使得电极内的电流变流体固化,从而锁定 阀构件相对于电极的位置。 以这种方式,相对于多孔电极构件振荡的阀构件可以相对于入口在打开,关闭或中间位置中冷冻。 阀构件因此控制通过阀的流体流量。

    Electrophoretic fluid composite structure
    120.
    发明授权
    Electrophoretic fluid composite structure 失效
    电泳液复合结构

    公开(公告)号:US5068018A

    公开(公告)日:1991-11-26

    申请号:US463276

    申请日:1990-01-10

    申请人: J. David Carlson

    发明人: J. David Carlson

    IPC分类号: F16F9/53 G05B19/02 G10K11/16

    CPC分类号: G05B19/02 F16F9/532

    摘要: An apparatus and method for control of stiffness and damping in a flexible composite structure by the application of an electric field to an electrophoretic fluid forming part of the structure. The structure includes spaced, parallel, flexible layers of material which include confronting electrodes. The electrophoretic fluid is capable of separating into particle-rich and particle-deficient phases by electrophoresis and operates in surface contact with the layers. An electrically nonconductive material having raised surface areas and spaces between the surface areas is associated with one or more of the layers. When a voltage is applied between the layers in a first direction, the particle-rich phase of the fluid collects on one of the layers and also makes contact with the spaces and the raised surface areas of the material associated with the other layer thereby engaging or locking the layers together to increase the shear strength of the layers and thus the complex stiffness of the structure. When the voltage potential is applied in the opposite direction, the particle-rich phase migrates to the other layer and collects in the spaces between the raised surfaces of the material, thereby disengaging the layers to decrease their shear strength and thus the stiffness of the structure. The structure may be configured as a panel, plate, or beam, in association with a variety of mechanical systems.

    摘要翻译: 一种用于通过将电场施加到形成结构的一部分的电泳流体来控制柔性复合结构中刚度和阻尼的装置和方法。 该结构包括间隔开的,平行的,柔性的材料层,其包括面对的电极。 电泳液能够通过电泳分离成富含粒子和颗粒的相,并与层表面接触。 具有凸起的表面积和表面区域之间的空间的非导电材料与一个或多个层相关联。 当在第一方向上在层之间施加电压时,流体的富颗粒相收集在一个层上并且还与空间接触,并且与另一层相关联的材料的凸起表面区域接合或 将层锁定在一起以增加层的剪切强度,从而增加结构的复杂刚度。 当相反方向施加电压电位时,富含微粒的相迁移到另一层并收集在材料的凸起表面之间的空间中,从而使层分离以降低其剪切强度,从而降低结构的刚度 。 结构可以被配置为与各种机械系统相关联的面板,板或梁。