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Romansy 13 pp 121-130 | Cite as

Detaching and Grasping Strategy Inspired by Human Behavior

  • Makoto Kaneko
  • Tatsuya Shirai
  • Toshio Tsuji
Conference paper
Part of the International Centre for Mechanical Sciences book series (CISM, volume 422)

Abstract

Through grasp experiments by human achieving an enveloping grasp for a small cylindrical object placed on a table, we found an interesting grasping motion, where a human changes the finger posture from upright to curved ones after each finger makes contact with the object. During this motion, the object is automatically lifted up through either rolling or sliding motion between the fingertip and the object. A series of this motion is called as Detaching Assist Motion (DAM). An advantage of DAM is that most of grasping motions can be done on the table instead of in the air. Therefore, we can avoid the worst scenario where the object falls down to the table. We first discuss the basic mechanism of DAM by human experiments. We then apply the DAM to a grasping motion by a multi-fingered robot hand. We show that the DAM can be explained by using Self-Posture Changing Motion. We also show some simulation and experimental results to confirm that a small object can be grasped easily by applying the DAM.

Keywords

Contact Force Contact Point Angular Displacement Link System Friction Boundary 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 2000

Authors and Affiliations

  • Makoto Kaneko
    • 1
  • Tatsuya Shirai
    • 1
  • Toshio Tsuji
    • 1
  1. 1.Department of Industrial and Systems EngineeringHiroshima UniversityHigashi-HiroshimaJapan

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