Reconfiguration of supernumerary robotic limbs for human augmentation

2026-03-31

AI Summary

This study addresses the limited adaptability of existing supernumerary robotic limbs (SRLs), which are predominantly designed for structured industrial settings and struggle to handle diverse tasks in dynamic, unstructured environments. To overcome this challenge, the work proposes a reconfigurable SRL framework that introduces, for the first time, the “human augmentation ratio” metric to quantify collaborative, visible, and invisible extended workspaces. This metric enables task-driven optimization of both morphological configuration and autonomy levels. The framework integrates origami-inspired modular structures with reconfigurable mechanical design, leveraging the augmentation ratio to guide reconfiguration decisions. Experimental results demonstrate that the proposed approach significantly enhances the adaptability of SRLs in everyday environments and improves the flexibility of human–robot collaboration.

Abstract

Wearable robots aim to seamlessly adapt to humans and their environment with personalized interactions. Existing supernumerary robotic limbs (SRLs), which enhance the physical capabilities of humans with additional extremities, have thus far been developed primarily for task-specific applications in structured industrial settings, limiting their adaptability to dynamic and unstructured environments. Here, we introduce a novel reconfigurable SRL framework grounded in a quantitative analysis of human augmentation to guide the development of more adaptable SRLs for diverse scenarios. This framework captures how SRL configuration shapes workspace extension and human-robot collaboration. We define human augmentation ratios to evaluate collaborative, visible extended, and non-visible extended workspaces, enabling systematic selection of SRL placement, morphology, and autonomy for a given task. Using these metrics, we demonstrate how quantitative augmentation analysis can guide the reconfiguration and control of SRLs to better match task requirements. We validate the proposed approach through experiments with a reconfigurable SRL composed of origami-inspired modular elements. Our results suggest that reconfigurable SRLs, informed by quantitative human augmentation analysis, offer a new perspective for providing adaptable human augmentation and assistance in everyday environments.

Problem

• supernumerary robotic limbs
• human augmentation
• reconfigurability
• unstructured environments
• wearable robots

Innovation

• reconfigurable supernumerary robotic limbs
• human augmentation
• workspace extension
• quantitative analysis
• modular origami-inspired design