Velocity Estimation of a Compass Gait Biped Robot by Using Impact Condition and Initial Condition Reset

충돌 조건과 초기치 리셋을 이용한 컴퍼스 이족 로봇의 속도 추정

  • Published : 2009.11.01

Abstract

In this paper, a simple method of angle velocity estimation is presented for a passive dynamic biped robot. The estimation problem is not an easy task because its dynamic model is a hybrid system involved with an impact condition. Instead of designing a complex observer for hybrid systems we simply utilize the impact condition to reset the initial condition of the high-pass filter when the non-support leg hits the slope. The approach has been verified by simulation results.

Keywords

References

  1. T. McGeer, 'Passive Dynamic Walking,' International Journal of Robotics Research. 9(2), pp. 68-82, 1990
  2. A. Goswami, B. Espiau, A. Keramane, 'Limit Cycles in a Passive Compass Gait Biped and Passivity-Mimicking Control Laws,' Auton. Robots, 4(3), pp. 273-286, 1997 https://doi.org/10.1023/A:1008844026298
  3. S.H. Collins, A.L. Ruina, R. Tedrake, M. Wisse, 'Efficient Bipedal Robots Based on Passive Dynamic Walkers,' Science, 307, pp. 1082-1085, 2005 https://doi.org/10.1126/science.1107799
  4. M.W. Spong, J.K. Holm, and D. Lee, 'Passivity-Based Control of Bipedal Locomotion,' IEEE Robots and Automation Magazine, vol. 14, no. 2, pp. 30-40, June, 2007 https://doi.org/10.1109/MRA.2007.380638
  5. M.W. Spong, and G. Bhatia, 'Further Results on Control of the Compass Gait Biped,' Proc. of IEEE/RSJ, pp. 1933-1938, Oct., 2003
  6. J. Holm and M.W. Spong, 'Kinetic Energy Shaping for Gait Regulationl of Underactuated Bipeds,' Proc. of IEEE Int. Conf. on Contr. App., pp. 1232-1238, Sep., 2008 https://doi.org/10.1109/CCA.2008.4629638
  7. Y.I. Son, H. Shim, and J.H. Seo, 'A Dynamic Output Feedback Control Law for Elastic Joint Robots via Feedback-Passivity Approach', Journal of the Franklin Institute, Vol. 341, No. 6, pp. 477-490, 2004 https://doi.org/10.1016/j.jfranklin.2004.05.001