Haptics | Human - Robot Interaction

HUGO’S Resolution

Picture of HUGO

This project focused on advancing the resolution capabilities of HUGO, a high-resolution tactile emulator developed at the Biomedical and Robotics Lab (BRML) at the Technion. HUGO is a groundbreaking device designed to replicate haptic feedback, making it the only full haptic feedback system in the world. With applications ranging from virtual and augmented reality to remote healthcare, e-commerce, and gaming, HUGO addresses the growing need for advanced tactile feedback in emerging technologies. However, limitations in degrees of freedom and wearability present challenges for its widespread use.

The primary goal was to measure HUGO’s resolution, understanding its capabilities to detect and replicate textures, shapes, and angles. This baseline measurement is essential for further development and optimization of the device for practical applications.

METHODOLOGY

Pilot Study:

  • Tested the ability of subjects to differentiate ramp angles ranging from 4° to 12°.

  • Participants (7 in total) were blindfolded and used only their index fingers to place ramps in order of increasing angle.

  • Results indicated that most participants could detect angle differences of up to 6°, with a minimum detection threshold of 5°.

  1. Resolution Testing:

    • Conducted using tactile samples, including ramps, wave surfaces, and geometric shapes.

    • Two tasks were implemented:

      • Task 1: Same or Not Same: Participants identified whether two surfaces were identical or different.

      • Task 2: Order of Change: Participants arranged surfaces in increasing order based on changing features such as texture, shape, or angle.

*All trays were modeled in SolidWorks

RESULTS

The pilot study revealed the limitations of human tactile perception with HUGO, setting a baseline for further enhancements. While the second experiment remains ongoing, early testing provides insights into the sensitivity and resolution thresholds required to improve the device’s functionality.

IMPACT

This project contributes to advancing the field of haptics by addressing key challenges in tactile feedback systems. HUGO’s development holds the potential to revolutionize user experiences in AR/VR, remote diagnostics, and beyond, pushing the boundaries of what is possible in human-computer interaction.

Click here for paper publication

CREDITS

PhD. Yair Herbst

Biorobotics and Biomechanics Lab, Technion - Israel Institute of Technology

Advisor

Facilities