An Efficient Foot-Force Distribution Algorithm for Straight-Line Walking of Quadruped Robots with a Failed Leg

고장 난 다리가 있는 사족 보행 로봇의 평탄 직선보행을 위한 효율적인 다리 힘 배분 알고리즘

  • Published : 2008.05.01

Abstract

This paper addresses the foot force distribution problem for quadruped robots with a failed leg. The quadruped robot has fault-tolerant straight-line gaits with one leg in locked-joint failure, and has discontinuous motion with respect to the robot body. The proposed method is operated in two folds. When the robot body stands still, we use the feature that there are always three supporting legs, and by incorporating the theory of zero-interaction force, we calculate the foot forces analytically without resort to any optimization technique. When the robot body moves, the conventional pseudo-inverse algorithm is applied to obtain the foot forces for supporting legs. Simulation results show the validity of the proposed scheme.

Keywords

References

  1. G. A. Pratt, "Legged robots at MIT: what's new since raibert," IEEE Robotics and Automation Magazine, vol. 7, no. 3, pp. 15-19, 2000 https://doi.org/10.1109/100.876907
  2. J.-M. Yang, "Fault tolerant gaits of legged robots for locked joint failures," IEEE Transactions on Systems, Man, and Cybernetics C, vol. 32, no. 4, pp. 507-516, 2002 https://doi.org/10.1109/TSMCC.2002.807274
  3. S. K.-K. Chu and G. K.-H. Pang, "Comparison between different model of hexapod robot in fault-tolerant gait," IEEE Transactions on Systems, Man, and Cybernetics A, vol. 32, no. 6, pp. 752-756, 2002 https://doi.org/10.1109/TSMCA.2002.807066
  4. V. Kumar and K. J. Waldron, "Force distribution in walking vehicles," Transactions on ASME: Journal of Mechanical Design, vol. 112, pp. 90-99, 1990 https://doi.org/10.1115/1.2912585
  5. R. S. Jamisola, A. A. Maciejewski and R. G. Roberts, "Failure-tolerant path planning for kinematically redundant manipulators anticipating locked-joint failures," IEEE Transactions on Robotics, vol. 22, no. 4, pp. 603-612, 2006 https://doi.org/10.1109/TRO.2006.878959
  6. J.-S. Chen, F.-T. Cheng, K.-T. Yang, F.-C. Kung and Y.-Y. Sun, "Optimal force distribution in multilegged vehicles," Robotica, vol. 17, no. 2, pp. 159-172, 1999 https://doi.org/10.1017/S0263574799000946
  7. W. Y. Jiang, A. M. Liu and D. Howard, "Optimization of legged robot locomotion by control of foot-force distribution," Transactions of the Institute of Measurement and Control, vol. 26, no. 4, pp. 311-323, 2004 https://doi.org/10.1191/0142331204tm124oa
  8. P. Gonzalez de Santos, M. A. Jimenez and M. A. Armada, "Dynamic effects in statically stable walking machines," Journal of Intelligent and Robotic Systems, vol. 23, pp. 71-85, 1998 https://doi.org/10.1023/A:1007993923530
  9. 양정민, "에너지 안정여유도를 이용한 사족 보행 로봇의 내고장성 걸음새," 대한전기학회논문지, 제55D권, 제 7호, pp. 319-326, 2006
  10. S. M. Song and K. J. Waldron, Machines That Walk: The Adaptive Suspension Vehicle, MIT Press, Cambridge, MA, 1989
  11. V. J. Kumar and K. J. Waldron, "Force distribution in closed kinematic chains," IEEE Transactions on Robotics and Automation, vol. 4, no. 6, pp. 657-664, 1988 https://doi.org/10.1109/56.9303
  12. J. F. Gardner, "Efficient computation of force distributions for walking machines on rough terrain," Robotica, vol. 10, pp. 427-433, 1992 https://doi.org/10.1017/S0263574700010638