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텐던방식을 이용한 착용용 보행보조로봇의 설계 및 제작

Design and Fabrication of Wearable Walking Assist Robot Using Tendon-Driven Method

Journal of the Korean Society for Precision Engineering 2018;35(9):861-866.
Published online: September 1, 2018

1 경상대학교 제어계측공학과

1 Department of Control & Instrumentation Engineering, ERI, Gyeongsang National University

#E-mail: gskim@gnu.ac.kr, TEL: +82-55-772-1745
• Received: September 7, 2017   • Revised: April 9, 2018   • Accepted: June 13, 2018

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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  • Design and Evaluation of Soft Actuators Including Stretchable Conductive Fibers
    Hye Won Lee, Yeji Han, Minchae Kang, Ju-Hee Lee, Min-Woo Han
    Journal of the Korean Society for Precision Engineering.2022; 39(4): 307.     CrossRef
  • Design of Integrated Ankle Torque Sensor and Mechanism for Wearable Walking Aid Robot
    Han-Sol Kim, Gab-Soon Kim
    Journal of the Korean Society for Precision Engineering.2020; 37(9): 667.     CrossRef
  • Design and Manufacture of Calf-Link with Knee Joint Torque Sensor for a Tendon-Driven Walking Assistant Robot
    Jun-Hwan An, Gab Soon Kim
    Journal of the Korean Society for Precision Engineering.2019; 36(11): 1009.     CrossRef

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Design and Fabrication of Wearable Walking Assist Robot Using Tendon-Driven Method
J. Korean Soc. Precis. Eng.. 2018;35(9):861-866.   Published online September 1, 2018
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Design and Fabrication of Wearable Walking Assist Robot Using Tendon-Driven Method
J. Korean Soc. Precis. Eng.. 2018;35(9):861-866.   Published online September 1, 2018
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Design and Fabrication of Wearable Walking Assist Robot Using Tendon-Driven Method
Image Image Image Image Image Image Image Image Image
Fig. 1 Normal person’s walking aspect
Fig. 2 Simulation results of walking assist robot for wear
Fig. 3 Concept of wearable walking assist robot
Fig. 4 Manufactured of wearable walking assist robot
Fig. 5 Motion for torque calculation of each joint using software
Fig. 6 Calculated torque value of each joint motor for tendon-driven method
Fig. 7 Walking control flow chart according to walking path during walking
Fig. 8 Walking aspect according to the hips angle, knee angle, and ankle angle during normal person's walking
Fig. 9 Walking of a normal person wearing a walking robot
Design and Fabrication of Wearable Walking Assist Robot Using Tendon-Driven Method

Strains from FEM analysis at each attachment location of strain-gages of each sensor of thigh link three-axis force sensor

No. Position (x,y) Right leg
x (mm) y (mm) H.J. angle
(θ1)
K.J. angle
(θ2)
A.J. angle
(θ3)
a 794.03 -90.19 2.8 -18.8 16.1
b 701.52 -44.09 25.8 -59.6 10.4
c 642.86 -28.73 34.3 -74.8 10.4
d 702.34 167.47 40.0 -53.9 15.4
e 795.96 74.78 14.5 -18.5 4.4
f 800.92 55.95 11.5 -15.2 3.5
g 800.46 -60.96 3.2 -15.3 12.9
h 800.54 -27.15 6.5 -17.1 8.3
i 800.60 -78.01 1.1 -13.5 12.2
j 799.24 -87.00 0.7 -14.0 12.0
 
No. Position (x,y) Left leg
x (mm) y (mm) H.J. angle
(θ1)
K.J. angle
(θ2)
A.J. angle
(θ3)
a 794.03 -90.19 2.8 -18.8 16.1
b 794.03 -90.19 2.8 -18.8 16.1
c 794.03 -90.19 2.8 -18.8 16.1
d 794.03 -90.19 2.8 -18.8 16.1
e 794.03 -90.19 2.8 -18.8 16.1
f 794.03 -90.19 2.8 -18.8 16.1
g 753.33 -150.02 7 -37 10
h 701.01 -50.82 25.2 -59.6 10.4
i 776.38 89.04 21.6 -30.5 10.3
j 795.92 74.78 14.5 -18.5 4.4

Torque calculation of the hip joint, the angle of the knee joint according to driving method

Method Hip joint
torque
(Nm)
Knee joint
torque
(Nm)
Ankle joint
torque
(Nm)
Tendon-driven 29.122 10.575 0.642
Direct-driven 32.977 11.430 0.642
Table 1 Strains from FEM analysis at each attachment location of strain-gages of each sensor of thigh link three-axis force sensor
Table 2 Torque calculation of the hip joint, the angle of the knee joint according to driving method