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Stability Circle을 통한 하지 외골격 로봇의 보행 안정성 판단

Determination of the Gait Stability of the Lower-Limb Exoskeleton Robot Through the Stability Circle

Journal of the Korean Society for Precision Engineering 2019;36(6):537-542.
Published online: June 1, 2019

1 한양대학교 대학원 메카트로닉스공학과

2 한양대학교 대학원 융합시스템공학과

3 한양대학교 로봇공학과

1 Department of Mechatronics Engineering, Graduate School, Hanyang University

2 Department of Interdisciplinary Engineering Systems, Graduate School, Hanyang University

3 Department of Robotics Engineering, Hanyang University

#E-mail: cshan@hanyang.ac.kr, TEL: +82-31-400-5247
• Received: October 1, 2018   • Revised: December 28, 2018   • Accepted: January 30, 2019

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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Citations

Citations to this article as recorded by  Crossref logo
  • Design of Assistive Wearable System for Walking
    Seong-Dae Choi, Sang-Hun Lee
    Journal of the Korean Society of Manufacturing Process Engineers.2019; 18(12): 111.     CrossRef

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Determination of the Gait Stability of the Lower-Limb Exoskeleton Robot Through the Stability Circle
J. Korean Soc. Precis. Eng.. 2019;36(6):537-542.   Published online June 1, 2019
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Determination of the Gait Stability of the Lower-Limb Exoskeleton Robot Through the Stability Circle
J. Korean Soc. Precis. Eng.. 2019;36(6):537-542.   Published online June 1, 2019
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Determination of the Gait Stability of the Lower-Limb Exoskeleton Robot Through the Stability Circle
Image Image Image Image
Fig. 1 WAP-2 (Walking assist robot for paraplegic patients ver. 2)
Fig. 2 The simplest model for WAP-2 exoskeleton robot. It assume that all mass values are concentrated at the CoM and massless leg
Fig. 3 Representation of detailed WAP-2 robot LIP model for calculation inverse kinematics problem
Fig. 4 Simulation result (a) is stable pelvis position trajectory(x(0): -0.2 m , yh: 0.5 m) (b) is fail pelvis position trajectory (x(0): -0.2 m, yh: 0.845 m) (c) is also fail pelvis position trajectory (x(0): -0.2 m, yh: 0.2 m)
Determination of the Gait Stability of the Lower-Limb Exoskeleton Robot Through the Stability Circle

WAP-2 robot parameters data

Sign Robot parameter Value
l 1 Pelvis to knee link 0.38(m)
l 2 Knee to foot link 0.465(m)
x(0) Initial CoM x position -0.2(m)
s_time Simulation step time 0.01(sec)
tf Simulation final time 0.58(sec)
Table 1 WAP-2 robot parameters data