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Design and fabrication of a lower limb exoskeleton to assist in stair ascending

Payman Joudzadeh (University of Tehran, Tehran, Islamic Republic of Iran)
Alireza Hadi (University of Tehran, Tehran, Islamic Republic of Iran)
Bahram Tarvirdizadeh (University of Tehran, Tehran, Islamic Republic of Iran)
Danial Borooghani (University of Tehran, Tehran, Islamic Republic of Iran)
Khalil Alipour (Department of Mechatronics Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Islamic Republic of Iran)

Industrial Robot

ISSN: 0143-991x

Article publication date: 7 May 2019

Issue publication date: 7 May 2019

423

Abstract

Purpose

This paper aims to deal with the development of a novel lower limb exoskeleton to assist disabled people in stair ascending.

Design/methodology/approach

For this purpose, a novel design of a mixture of motors and cables has been proposed for users to wear them easily and show the application of the system in stair climbing.

Findings

One of the prominences of this study is the provided robot design where four joints are actuated with only two motors; each motor actuates either the knees or ankles. Another advantage of the designed system is that with motors placed in a backpack, the knee braces can be worn under clothes to be concealed. Finally, the system performance is evaluated using electromyography (EMG) signals showing 28 per cent reduction in energy consumption of related muscles.

Originality/value

This investigation deals with the development of a novel lower limb exoskeleton to assist disabled people in stair ascending.

Keywords

Acknowledgements

The authors are grateful for the help of the CAST Laboratory members, especially, its director Prof. Aghil Yousefi-Koma for EMG data acquisitions.

Citation

Joudzadeh, P., Hadi, A., Tarvirdizadeh, B., Borooghani, D. and Alipour, K. (2019), "Design and fabrication of a lower limb exoskeleton to assist in stair ascending", Industrial Robot, Vol. 46 No. 2, pp. 290-299. https://doi.org/10.1108/IR-09-2018-0199

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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