用柔性气动织物实现轻量化指尖触觉反馈，可无线操作且识别准确率超90%
A soft and lightweight fabric-based pneumatic interface for multimodal fingertip tactile feedback
- 用数控热封技术将聚氨酯涂层织物制成气动腔体，结构柔软贴合
- 设备仅重2.1克，实测在三种触觉模式下识别准确率超90%
- 适合虚实融合、远程操控场景，适合追求轻便与多模态反馈的开发者
可穿戴指尖触觉设备对虚拟现实、增强现实及远程操作中的真实交互至关重要，但现有方法难以兼顾足够的触觉输出、低重量、简易制造和无绳便携性。本文展示织物基气动驱动可解决这一难题。设备由四个通过计算机数控热封工艺制成的热塑性聚氨酯涂层织物气腔构成，形成软性贴合接口，仅重2.1克，可由腕戴控制单元无线运行。机械与动态特性测试表明，该织物执行器能产生足够力、位移与带宽，满足指尖触觉呈现需求。对15名参与者进行的心理物理学研究显示，在三种不同触觉模式——接触构型、滑动方向、振动频率中，分类准确率均超过90%。这些结果证实织物基气动驱动是实现轻量、低成本、多模态指尖触觉接口的可行技术路径。
原文摘要 · Abstract (English)
Wearable fingertip haptic devices are critical for realistic interaction in virtual reality, augmented reality, and teleoperation, yet existing approaches struggle to simultaneously achieve adequate tactile output, low mass, simple fabrication, and untethered portability. Here we show that fabric-based pneumatic actuation can address this gap. Our device comprises four pneumatic chambers fabricated from thermoplastic polyurethane-coated fabric via computer numerical control heat-sealing, yielding a soft, conformable interface weighing 2.1 g that operates untethered with a wrist-mounted control unit. Mechanical and dynamic characterization confirms that the fabric actuators produce sufficient force, displacement, and bandwidth for fingertip tactile rendering. A psychophysical study with 15 participants demonstrates classification accuracy exceeding 90% across three distinct tactile modes -- contact configuration, directional sliding, and vibrotactile frequency. These findings establish fabric-based pneumatic actuation as a viable technology route for lightweight, low-cost, and multimodal fingertip haptic interfaces.
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