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Journal of Central South University of Technology

, Volume 16, Issue 6, pp 971–975 | Cite as

Gait simulation of new robot for human walking on sand

  • Li-xun Zhang (张立勋)
  • Ling-jun Wang (王令军)Email author
  • Feng-liang Wang (王凤良)
  • Ke-kuan Wang (王克宽)
Article

Abstract

In order to simulate the gait of human walking on different terrains a new robot with six degrees of freedom was proposed. Based on sand bearing characteristic compliance control was introduced to control system in horizontal and vertical movement directions at the end of the robot, and position control in attitude. With Matlab/Simulink toolbox, the system control models were established, and the bearing characteristics of rigid ground, hard sand, soft sand and softer sand were simulated. The results show that 0, 0.62, 0.89 and 1.12 mm are the maximal subsidences of the four kinds of ground along the positive direction of x-axis, respectively, and 0, −0.96, −1.99 and −3.00 mm are the maximal subsidences along the negative direction of x-axis, respectively. Every subsidence along y-axis is negative, and 0, −4.12, −8.23 and −12.01 mm are the maximal subsidences of the four kinds of ground, respectively. Simulation results show that the subsidence of footboard points to inferior anterior in early stage of stand phase, while points to posterior aspect in late stage. The subsidence tends to point to posterior aspect in the whole. These results are basically consistent with the gait characteristics of human walking on sand. Gait simulation of the robot for human walking on sand is achieved.

Key words

robot gait simulation sand bearing characteristic compliance control 

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Copyright information

© Central South University Press and Springer Berlin Heidelberg 2009

Authors and Affiliations

  • Li-xun Zhang (张立勋)
    • 1
  • Ling-jun Wang (王令军)
    • 1
    Email author
  • Feng-liang Wang (王凤良)
    • 1
  • Ke-kuan Wang (王克宽)
    • 1
  1. 1.College of Mechanical and Electrical EngineeringHarbin Engineering UniversityHarbinChina

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