专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2005027161A2 DIELECTRIC ELASTOMER ACTUATED SYSTEMS AND METHODS 审中-公开
标题翻译：介电弹性体驱动的系统和方法
公开(公告)号：WO2005027161A2
公开(公告)日：2005-03-24
申请号：PCT/US2003/014446
申请日：2003-05-09
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , DUBOWSKY, Steven , HAFEZ, Moustapha , LICHTER, Matthew , WEISS, Peter , WINGERT, Andreas
发明人： DUBOWSKY, Steven , HAFEZ, Moustapha , LICHTER, Matthew , WEISS, Peter , WINGERT, Andreas
IPC分类号： H01H
CPC分类号： H01L41/0986 , G01R33/28 , H01L41/0536 , H02N1/006 , H02N2/0095
摘要： The system of the present invention includes an actuator having at least two electrodes, an elastomeric dielectric film disposed between the two electrodes, and a frame attached to the elastomeric dielectric film. The frame provides a linear actuation force characteristic over a displacement range. The displacement range is preferably the stroke of the actuator. The displacement range can be about 5 mm and greater. Further, the frame can include a plurality of configurations, for example, at least a rigid members coupled to a flexible member wherein the frame provides an elastic restoring force. In preferred embodiments, the rigid member can be, but is not limited to, curved beams, parallel beams, rods and plates. In a preferred embodiment the actuator can further include a passive element disposed between two flexible members such as, for example, links to tune a stiffness characteristic of the actuator. The passive element can be a bi-stable element. Further, the actuator can include a plurality of layers of the elastomeric dielectric film integrated into the frame. The elastomeric film can be made of different materials such as, for example, acrylic, silicone and latex.
摘要翻译：本发明的系统包括具有至少两个电极的致动器，设置在两个电极之间的弹性体电介质膜以及附接到弹性体电介质膜的框架。该框架在位移范围上提供线性致动力特性。位移范围最好是致动器的行程。位移范围可以约为5毫米或更大。此外，框架可以包括多个构型，例如，至少一个刚性构件联接到柔性构件，其中框架提供弹性恢复力。在优选实施例中，刚性构件可以是但不限于弯曲梁，平行梁，杆和板。在优选实施例中，致动器可以进一步包括设置在两个柔性构件之间的无源元件，例如用于调节致动器的刚度特性的链路。无源元件可以是双稳态元件。此外，致动器可以包括集成到框架中的多层弹性体电介质膜。弹性体膜可以由不同的材料制成，例如丙烯酸，硅酮和胶乳。

2. 发明申请

WO2012148594A2 PRECISION PARABOLIC MIRROR STRUCTURES 审中-公开
标题翻译：精密抛光镜结构
公开(公告)号：WO2012148594A2
公开(公告)日：2012-11-01
申请号：PCT/US2012/029740
申请日：2012-03-20
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , LI, Lifang , DUBOWSKY, Steven , KECSKEMETHY DARANYI, Andres George , ARIF, Abul Fazal M.
发明人： LI, Lifang , DUBOWSKY, Steven , KECSKEMETHY DARANYI, Andres George , ARIF, Abul Fazal M.
IPC分类号： F24J2/14 , G02B5/10
CPC分类号： G02B5/10 , F24S23/745 , Y02E10/45 , Y10T428/24 , Y10T428/24479 , Y10T428/24612 , Y10T428/24777
摘要： Parabolic Mirror. The mirror includes a flexible material with a reflective surface and a rear surface. A flexible band is in contact with the rear surface of the flexible material. The bending stiffness of the band as a function of distance along its length is selected so that the band and the flexible material in contact therewith assume a parabolic shape when ends of the band are moved toward one another. In a preferred embodiment, the bending stiffness of the band is achieved by controlling the second moment of area of the band along its length. The second moment of area may be adjusted by altering the width of the band along its length or by altering the thickness of the band along its length, or a combination of the two.
摘要翻译：抛物面镜。镜子包括具有反射表面和后表面的柔性材料。柔性带与柔性材料的后表面接触。选择作为沿其长度的距离的函数的带的弯曲刚度，使得当带的端部朝向彼此移动时，带和与其接触的柔性材料呈现抛物线形状。在一个优选实施例中，通过控制沿其长度的带的面积的第二时刻来实现带的弯曲刚度。可以通过沿其长度改变带的宽度或通过改变带的沿着其长度的厚度或两者的组合来调整区域的第二时刻。

3. 发明申请

WO2012012065A1 SYSTEM FOR DISCRETELY ACTUATED SOLAR MIRRORS 审中-公开
标题翻译：用于分离式致动太阳镜的系统
公开(公告)号：WO2012012065A1
公开(公告)日：2012-01-26
申请号：PCT/US2011/041048
申请日：2011-06-20
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , DUBOWSKY, Steven , LEE, Seung, Jae , BILTON, Amy, Marlou
发明人： DUBOWSKY, Steven , LEE, Seung, Jae , BILTON, Amy, Marlou
IPC分类号： G02B26/08 , F24J2/10
CPC分类号： G02B26/0825 , F24S2023/83 , F24S2023/874 , G02B7/183
摘要： System for establishing a surface shape. The system includes a compliant substrate including the surface and having a reverse side, and a plurality of discrete actuators engaging the reverse side and arranged in a selected pattern to control the surface shape as individual discrete activators are activated. It is preferred that the actuators have multiple discrete stable states of elongation. A particularly preferred embodiment uses actuators that are binary with two stable states of elongation.
摘要翻译：用于建立表面形状的系统。该系统包括包括表面并具有反面的柔性基板，以及接合反面并以选定图案布置的多个离散致动器，以在各个分立激活器被激活时控制表面形状。优选地，致动器具有多个离散的稳定的伸长状态。特别优选的实施例使用具有两个稳定的伸长状态的二进制的致动器。

4. 发明申请

WO1997040435A2 BASE FORCE/TORQUE SENSOR APPARATUS FOR THE PRECISE CONTROL OF MANIPULATORS WITH JOINT FRICTION AND A METHOD OF USE THEREOF 审中-公开
标题翻译：用于具有联合摩擦的操纵器的精确控制的基座/扭矩传感器装置及其使用方法
公开(公告)号：WO1997040435A2
公开(公告)日：1997-10-30
申请号：PCT/US1997006250
申请日：1997-04-15
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY
发明人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , DUBOWSKY, Steven , MOREL, Guillaume
IPC分类号： G05D00/00
CPC分类号： B25J9/1628 , G05B2219/40582 , G05B2219/40599
摘要： An elegant, cost-effective apparatus and method is disclosed for compensating the effect of joint friction in manipulators. The invention uses a six axis wrench sensor (also called a force/torque sensor) mounted between the manipulator and a reference body upon which it is supported. From the base wrench measurements, for rotary joints, the joint torques are estimated. The estimations apparatus uses Newton-Euler relations of successive link bodies. The estimated torque is fed back through a torque controller, that virtually eliminates friction and gravity effects. A position control loop encloses the torque controller and provides it with desired torques computed from measured position errors. For linear joints, appropriate forces are estimated. Coupled to link position sensors and the wrench sensor, is a gravity compensator, which generates a dynamic wrench signal that corresponds to the gravity compensated dynamic component of the base wrench signal, based on the position signals and the base wrench signal. Coupled to the gravity compensator and the position sensors is a joint analyzer, which generates a signal that corresponds to the gravity compensated torque that is actually applied to the link at the rotary joint, based on the dynamic wrench signal and the position signals. Both torques at rotary joints and forces at linear joints are estimated by the apparatus. Multiple and single joint manipulators can be evaluated. The achieved precision is substantially greater than for conventional methods and approaches the resolution of the Puma's encoders.
摘要翻译：公开了一种优雅，成本有效的装置和方法来补偿机械手中的联合摩擦的影响。本发明使用六轴扳手传感器（也称为力/扭矩传感器），其安装在操纵器和支撑在其上的参考体之间。从基础扳手测量，对于旋转接头，估计接头扭矩。估计装置使用连续链接体的牛顿 - 欧拉关系。估计的扭矩通过扭矩控制器反馈，实际上消除了摩擦和重力作用。位置控制回路包围扭矩控制器，并向其提供从测量位置误差计算出的所需转矩。对于线性关节，估计适当的力。耦合到链接位置传感器和扳手传感器，是重力补偿器，其基于位置信号和基准扳手信号产生对应于基础扳手信号的重力补偿动态分量的动态扳手信号。耦合到重力补偿器并且位置传感器是联合分析器，其基于动态扳手信号和位置信号产生对应于实际施加到旋转接头处的连杆的重力补偿转矩的信号。旋转接头处的扭矩和直线接头处的力均由设备估计。可以评估多个和单个关节操纵器。实现的精度比传统方法大得多，并且可以实现Puma编码器的分辨率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式