执行机构
电介质
触觉技术
弹性体
计算机科学
材料科学
光电子学
复合材料
模拟
人工智能
作者
Federico Carpi,Gabriele Frediani,Danilo De Rossi
摘要
As a means to improve versatility and safety of dielectric elastomer actuators (DEAs) for several fields of application,
so-called 'hydrostatically coupled' DEAs (HC-DEAs) have recently been described. HC-DEAs are based on an
incompressible fluid that mechanically couples a DE-based active part to a passive part interfaced to the load, so as to
enable hydrostatic transmission. This paper presents ongoing developments of HC-DEAs and potential applications in
the field of haptics. Three specific examples are considered. The first deals with a wearable tactile display used to
provide users with tactile feedback during electronic navigation in virtual environments. The display consists of HCDEAs
arranged in contact with finger tips. As a second example, an up-scaled prototype version of an 8-dots refreshable
cell for dynamic Braille displays is shown. Each Braille dot consists of a miniature HC-DEA, with a diameter lower than
2 mm. The third example refers to a device for finger rehabilitation, conceived to work as a sort of active version of a
rehabilitation squeezing ball. The device is designed to dynamically change its compliance according to an electric
control. The three examples of applications intend to show the potential of the new technology and the prospective
opportunities for haptic interfaces.
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