A Global Step Planning Method for Biped Robot Considering Obstacles

  • Tsuji Toshiaki
    Department of System Design Engineering, Faculty of Science and Technology, Keio University
  • Ohnishi Kouhei
    Department of System Design Engineering, Faculty of Science and Technology, Keio University

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Other Title
  • 障害物を考慮した2足歩行ロボットの着地点制御
  • ショウガイブツ オ コウリョ シタ 2ソク ホコウ ロボット ノ チャクチテン セイギョ

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Description

This paper discusses about step planning of a biped robot in an environment with obstacles. Biped robot has a mechanical advantage to work in human surroundings. This is accomplished by its capability to select the discrete contact point with the ground. Though its foot placement should be discussed to step over obstacles, it is difficult because dynamic biped locomotion is a complex interaction system between upper body motion and stepping point. Applying the idea of virtual supporting point, this complex interaction is solved. The collision detection is easily achieved through modeling the obstacles to an off-limits on the horizontal plane. A stamp area is set in order to avoid the extreme stride alteration. Through these methods, the robot can prepare for the obstacle beforehand and select a series of footsteps that provides stable locomotion. Experimental results are shown to confirm the validity of the proposed methods.

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