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특이성을 고려한 엑소수트의 전신 기반 제어 전략 시뮬레이션

Whole-Body Control Based Strategy Simulation of Exo-Suit considering Singularity

Journal of the Korean Society for Precision Engineering 2022;39(11):825-831.
Published online: November 1, 2022

1 KAIST 기계공학부

1 School of Mechanical Engineering, Korea Advanced Institute of Science & Technology

#E-mail: kyungsookim@kaist.ac.kr, TEL: +82-42-350-3047
• Received: May 9, 2022   • Revised: August 25, 2022   • Accepted: September 7, 2022

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • Comparative Analysis between IMU Signal-based Neural Network Models for Energy Expenditure Estimation
    Chang June Lee, Jung Keun Lee
    Journal of the Korean Society for Precision Engineering.2024; 41(3): 191.     CrossRef

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Whole-Body Control Based Strategy Simulation of Exo-Suit considering Singularity
J. Korean Soc. Precis. Eng.. 2022;39(11):825-831.   Published online November 1, 2022
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J. Korean Soc. Precis. Eng.. 2022;39(11):825-831.   Published online November 1, 2022
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Whole-Body Control Based Strategy Simulation of Exo-Suit considering Singularity
Image Image Image Image Image Image Image
Fig. 1 A 6-link human model for the lifting motion
Fig. 2 Motion capture experiment: Lifting operation
Fig. 3 Motion capture experiment: System communication and configuration
Fig. 4 Approximate box lifting model for control
Fig. 5 Whole-body control framework for the exoskeleton system
Fig. 6 Lifting simulation results (w/ straight leg term, w/o straight leg term)
Fig. 7 Lifting simulation results (w/ WBC (Whole-body control), w/o WBC (Whole-body control))
Whole-Body Control Based Strategy Simulation of Exo-Suit considering Singularity

Human body distribution rate

Length [%] Mass [%]
Head and neck 12.51 7.34
Trunk 32.15 47.76
Upper arm 21.47 3.34
Forearm 17.64 1.87
Hand 11.98 0.87
Thigh 26.45 11.56
Shank 25.31 4.52
Foot 3.54 1.89

Physical meaning of the variables

v Generalized velocity
A Centroidal momentum matrix
Wg Gravitational wrench
Werf Wrench by ground reaction forces
ρmin, ρmax Minimum and maximum values of ρ
τmin, τmax Minimum and maximum values of τ
Table 1 Human body distribution rate
Table 2 Physical meaning of the variables