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Authors
Andrea Manni; Angelo di Noi; Giovanni Indiveri

Identifier
10.3182/20060906-3-IT-2910.00114

Index Terms
control architecture,dynamically stable gait,foot rotation indicator,support polygon

Abstract
From the 1970's biped robots have had a large attention from the robotic research community. Yet the issue of controlling dynamically stable walking for arbitrary biped robots is still open. We propose a simple control architecture based on the use of the FRI (Foot Rotation Indicator) point and the support polygon. The major advantage of the proposed architecture is that motion planning (and eventually sensor based re-planning (slower feedback loop)) is limited to the leg joints whereas the trunk and arm degrees of freedom are controlled in closed loop (faster feedback loop) to achieve overall dynamic stability. Such architecture allows to decouple the problem of dynamic stable walking in the two relatively simpler problems of gait generation and robot stabilization. This architecture is particularly suited for small size robots having limited onboard computational power and limited sensor suits. The effectiveness of the proposed method has been validated through Matlab® simulations and experimental tests performed on a Robovie-MS platform.

References

[1] Behnke, S., J. Muller and M. Schreiber (July
    2005a). Playing soccer with robosapien. In:
    In Proceedings of The 9th RoboCup International
     Symposium, Osaka, Japan. July 2005.
[2] Behnke, S., J. Muller and M. Schreiber (May
    2005b). Using handheld computers to control
     humanoid robots. In: In Proceedings of
    1st International Conference on Dextrous Autonomous
     Robots and Humanoids (darh2005)
    Yverdon-les-Bains - Switzerland. May 2005.
[3] Corke, P. I. (1996). A robotics toolbox for MATLAB.
     IEEE Robotics and Automation Magazine
     3(1), 24-32.
[4] Goswami, A. (1999). Postural stability of biped
    robots and the foot-rotation indicator (fri)
    point. The International Journal of Robotic
    Research Vol. 18, No. 6, 523-533.
[5] Goswami, A., B. Espiau and A. Keramane (1997).
    Limit cycles in a passive compass gait biped
    and passivity-mimicking control laws. Autonomous
     Robots 4, 273-286.
[6] Hoffman, A., M. Popovic, S. Massaquoi and
    H. Herr (2004). A sliding controller for
    bipedal balancing using integrated movement
    of contact and non-contact limbs. in Proceedings
     of the IEEE/RSJ International Conference
     on Intelligent Robots and System,
    (Sendal, Japan).
[7] Honda (Inc). www.world.honda.com/asimo.
[8] Kagaku (Co. Ltd). www.kondo-robot.com.
[9] Khatib, O., L. Sentis, J. Park and J. Warren
    (2004). Whole-body dynamic behavior and
    control of human-like robots. International
    Journal of Humanoid Robotics Vol. 1, No.
    1, 29-43.
[10] Sciavicco, L. and B. Siciliano (2000). Modelling
     and Control of Robot Manipulators. Springer.
     Berlin.
[11] Sony (Global). www.sony.net/sonyinfo/qrio/.
[12] Tsuji, T. and K. Ohnishi (2002). A control of
     biped robot which applies inverted pendolum
     mode with virtual supporting point. AMC
     2002, Maribor, Slovenia.
[13] Vstone (Co. Ltd). www.vstone.co.jp.
[14] Vukobratović, M. and B. Borovac (2004). Zero-moment
      point - thirty five years of its life.
     International Journal of Humanoid Robotics
     Vol. 1, No. 1, 157-173.
[15] Wowwee (Robosapien). www.wowwee.com.
[16] Zhou, C., P. K. Yue, J. Ni and S. B. Chan
     (2004). Dynamically stable gait planning for
     a humanoid robot to climb sloping surface.
     Proceedings of the 2004 IEEE Conference
     on Robotics, Automation and Mechatronics,
     Singapore.