A Multi-Layer Sim-to-Real Framework for Gaze-Driven Assistive Neck Exoskeletons

Fuente: arXiv
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Hauptverfasser: Rubow, Colin, Brewer, Eric, Bales, Ian, Zhang, Haohan, Brown, Daniel S.
Format: Preprint
Veröffentlicht: 2026
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author Rubow, Colin
Brewer, Eric
Bales, Ian
Zhang, Haohan
Brown, Daniel S.
author_facet Rubow, Colin
Brewer, Eric
Bales, Ian
Zhang, Haohan
Brown, Daniel S.
contents Dropped head syndrome, caused by neck muscle weakness from neurological diseases, severely impairs an individual's ability to support and move their head, causing pain and making everyday tasks challenging. Our long-term goal is to develop an assistive powered neck exoskeleton that restores natural movement. However, predicting a user's intended head movement remains a key challenge. We leverage virtual reality (VR) to collect coupled eye and head movement data from healthy individuals to train models capable of predicting head movement based solely on eye gaze. We also propose a novel multi-layer controller selection framework, where head control strategies are evaluated across decreasing levels of abstraction -- from simulation and VR to a physical neck exoskeleton. This pipeline effectively rejects poor-performing controllers early, identifying two novel gaze-driven models that achieve strong performance when deployed on the physical exoskeleton. Our results reveal that no single controller is universally preferred, highlighting the necessity for personalization in gaze-driven assistive control. Our work demonstrates the utility of VR-based evaluation for accelerating the development of intuitive, safe, and personalized assistive robots.
format Preprint
id arxiv_https___arxiv_org_abs_2603_06779
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle A Multi-Layer Sim-to-Real Framework for Gaze-Driven Assistive Neck Exoskeletons
Rubow, Colin
Brewer, Eric
Bales, Ian
Zhang, Haohan
Brown, Daniel S.
Robotics
Dropped head syndrome, caused by neck muscle weakness from neurological diseases, severely impairs an individual's ability to support and move their head, causing pain and making everyday tasks challenging. Our long-term goal is to develop an assistive powered neck exoskeleton that restores natural movement. However, predicting a user's intended head movement remains a key challenge. We leverage virtual reality (VR) to collect coupled eye and head movement data from healthy individuals to train models capable of predicting head movement based solely on eye gaze. We also propose a novel multi-layer controller selection framework, where head control strategies are evaluated across decreasing levels of abstraction -- from simulation and VR to a physical neck exoskeleton. This pipeline effectively rejects poor-performing controllers early, identifying two novel gaze-driven models that achieve strong performance when deployed on the physical exoskeleton. Our results reveal that no single controller is universally preferred, highlighting the necessity for personalization in gaze-driven assistive control. Our work demonstrates the utility of VR-based evaluation for accelerating the development of intuitive, safe, and personalized assistive robots.
title A Multi-Layer Sim-to-Real Framework for Gaze-Driven Assistive Neck Exoskeletons
topic Robotics
url https://arxiv.org/abs/2603.06779