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相关概念视频

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

271
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
271
Frictional Force01:07

Frictional Force

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When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
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相关实验视频

Updated: May 23, 2025

Use of a Foot-Induced Digitally Controlled Resistance Device for Functional Magnetic Resonance Imaging Evaluation in Patients with Foot Paresis
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Use of a Foot-Induced Digitally Controlled Resistance Device for Functional Magnetic Resonance Imaging Evaluation in Patients with Foot Paresis

Published on: July 7, 2023

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可重新配置的灵活触觉接口使用局部摩擦调制.

Romain Le Magueresse, Fabrice Casset, Frederic Giraud

    IEEE transactions on haptics
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    此摘要是机器生成的。

    这项研究引入了一种使用超声波共振器的新型柔性触觉表面,以实现柔性材料上的纹理染和形状显示. 该技术在形状和图案识别方面实现了高精度,克服了当前灵活触觉解决方案的局限性.

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    Published on: July 7, 2023

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    Author Spotlight: Enhancing Grasping Abilities for Hemiplegic Patients with Flexible Robotic Limbs
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    科学领域:

    • 触觉和人机交互的人机交互
    • 材料科学与工程 材料科学与工程
    • 机器人和机械电子学

    背景情况:

    • 灵活的触觉技术在纹理染方面面临挑战,原因是基板中的弹性波传播不佳.
    • 现有的替代执行器密度低,限制了细纹理染能力.
    • 刚性触觉表面提供有效的摩擦调制,但缺乏可整形性.

    研究的目的:

    • 开发和评估一种创新的触觉解决方案,用于在柔性表面上进行局部或连续的纹理染.
    • 将刚性表面的摩擦调制优势与薄聚合物板的可塑性相结合.
    • 在灵活的触摸显示器上实现多触摸和多用户交互.

    主要方法:

    • 在聚合物矩阵内使用压电驱动的超声波共振器开发出灵活的触觉表面.
    • 表面调节摩擦以刺激纹理的能力的表征.
    • 通过涉及形状识别和同时触觉模式识别的用户研究进行评估.

    主要成果:

    • 部落学测量证实了与所需形状保持一致的摩擦减小.
    • 参与者在14秒内识别简单的几何形状的成功率为96%.
    • 两个用户同时识别了独立的触觉模式,准确度为89%.

    结论:

    • 开发的灵活的触觉装置有效地呈现简单的几何形状和纹理.
    • 该技术支持在可调整的表面上进行多触摸和多用户交互.
    • 这一创新对需要先进的灵活触觉反的各种应用具有重大潜力.