改进触觉单元设计，实现振动幅度精准调控。
Optimized Design of A Haptic Unit for Vibrotactile Amplitude Modulation
- 基于改进的弹性模型，分析皮肤中振动传播衰减机制。
- 提出双层分层结构，通过多层材料调节振动幅度。
- 实验验证了设计在触觉反馈中的有效性，适合可穿戴设备。
人机交互中信息传递至关重要。触觉反馈将信息编码为时空振动，使用户感知触感，具有轻便、可穿戴、稳定性高等优点，广泛应用于感官替代、虚拟现实、教育和医疗等领域。然而，现有触觉单元设计缺乏振动幅度调制能力，限制了其应用。本文从振动幅度调制角度优化触觉单元设计，构建了改进的弹性模型以描述振动在皮肤中的传播与衰减机制。基于该模型，提出了两种分层结构设计方案，通过多层材料组合实现振动幅度的放大或衰减。搭建实验平台评估优化设计性能，验证了其在触觉反馈中的有效性和可行性。
原文摘要 · Abstract (English)
Communicating information to users is a crucial aspect of human-machine interaction. Vibrotactile feedback encodes information into spatiotemporal vibrations, enabling users to perceive tactile sensations. It offers advantages such as lightweight, wearability, and high stability, with broad applications in sensory substitution, virtual reality, education, and healthcare. However, existing haptic unit designs lack amplitude modulation capabilities, which limits their applications. This paper proposed an optimized design of the haptic unit from the perspective of vibration amplitude modulation. A modified elastic model was developed to describe the propagation and attenuation mechanisms of vibration in the skin. Based on the model, two types of hierarchical architectural design were proposed. The design incorporated various materials arranged in multiple layers to amplify or attenuate the vibration amplitude as it traveled through the structure. An experimental platform was built to evaluate the performance of the optimized design.
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