Scattering-compensated single-channel time reversal for highly designable surface haptics

IF 7.1 1区 工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Mechanical Sciences Pub Date : 2025-01-20 DOI:10.1016/j.ijmecsci.2025.109998
Hangyu Li, Pengyu Zhao, Yongmao Pei
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Abstract

Haptic feedback is a critical aspect of the immersive virtual reality experience. Time-reversal techniques offer promising applications in surface haptics, enabling precise and localized haptic feedback. However, the current time reversal method is limited by the need for sophisticated synchronized multi-element transducers, leading to high implementation costs and complexity. This paper proposes a scattering-compensated single-channel time reversal approach (SSTR) that incorporates an artificial structural boundary with randomly distributed cavities. The excitation in the form of a pulse sequence, after undergoing varying degrees of scattering, converges at the same moment and location, achieving focusing. The focusing capabilities were evaluated and found to be comparable to those of eight-channel time-reversal techniques. Our method modulates a single driving signal to freely control the focal position, focusing moment, and focusing sequence within a fixed structure. Further validation was provided by experimental results. In conclusion, the SSTR, augmented by artificial structural boundary, offers a cost-effective solution for localized haptic feedback. It provides a significant advancement in the field of haptic feedback technology, with also potential applications in medical imaging, non-destructive testing, and telecommunications.

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来源期刊
International Journal of Mechanical Sciences
International Journal of Mechanical Sciences 工程技术-工程:机械
CiteScore
12.80
自引率
17.80%
发文量
769
审稿时长
19 days
期刊介绍: The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.
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