Document Detail

Analysis of relative displacement between the HX wearable robotic exoskeleton and the user's hand.
MedLine Citation:
PMID:  25326697     Owner:  NLM     Status:  Publisher    
BACKGROUND: Advances in technology are allowing for the production of several viable wearable robotic devices to assist with activities of daily living and with rehabilitation. One of the most pressing limitations to user satisfaction is the lack of consistency in motion between the user and the robotic device. The displacement between the robot and the body segment may not correspond because of differences in skin and tissue compliance, mechanical backlash, and/or incorrect fit.
FINDINGS: This report presents the results of an analysis of relative displacement between the user's hand and a wearable exoskeleton, the HX. HX has been designed to maximize comfort, wearability and user safety, exploiting chains with multiple degrees-of-freedom with a modular architecture. These appealing features may introduce several uncertainties in the kinematic performances, especially when considering the anthropometry, morphology and degree of mobility of the human hand. The small relative displacements between the hand and the exoskeleton were measured with avideo-based motion capture system, while the user executed several different grips in different exoskeleton modes.#xD; CONCLUSIONS: The analysis furnished quantitative results about the device performance, differentiated among device modules and test conditions. In general, the global relative displacement for the distal part of the device was in the range 0.5-1.5 mm, while within 3 mm (worse but still acceptable) for displacements nearest to the hand dorsum. Conclusions over the HX design principles have been drawn, as well as guidelines for future developments..
Marco Cempini; Alberto Marzegan; Marco Rabuffetti; Mario Cortese; Nicola Vitiello; Maurizio Ferrarin
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-10-18
Journal Detail:
Title:  Journal of neuroengineering and rehabilitation     Volume:  11     ISSN:  1743-0003     ISO Abbreviation:  J Neuroeng Rehabil     Publication Date:  2014 Oct 
Date Detail:
Created Date:  2014-10-19     Completed Date:  -     Revised Date:  2014-10-20    
Medline Journal Info:
Nlm Unique ID:  101232233     Medline TA:  J Neuroeng Rehabil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  147     Citation Subset:  -    
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