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ROMANSY 11 pp 301-308 | Cite as

Stiffness Control of an Object Grasped by a Multifingered Hand

  • K. Tanie
  • H. Maekawa
  • Y. Nakamura
Part of the International Centre for Mechanical Sciences book series (CISM, volume 381)

Abstract

When a robotic manipulator is required to carry out tasks during which the manipulated object will receive constraint forces from the environment, adjusting the stiffness condition of the object grasped or the end effector is necessary. To achieve this function, several stiffness control laws or special accommodation devices like remote center compliance(RCC) have been developed. In robotic arms with a simple gripper, the stiffness control is done by adjusting the joint displacements according to the external forces applied to the grasped object or the end effector, and vice versa. However, when a hand with fingers which have several joints actively controlled is used for the end effector, the object stiffness control can be done by controlling the finger joints cooperatively. This paper describes this issue and propose an object stiffness control method for multifingered hands.

Keywords

Finger Joint Stiffness Condition Propose Control Method Fingertip Force Object Trajectory 
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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References

  1. [1]
    H. Maekawa, K. Yokoi, K. Tanie, M. Kaneko, N. Kimura, N. Imamura, Position/stiffness based manipulator by three-fingered robot hand, Proc. of International Symposium on Advanced Robot Technology, Tokyo, pp.597–603(1991).Google Scholar
  2. [2]
    Y. Nakamura, K. Nagai, T. Yoshikawa, Mechanics of coordinative manipulation by multiple robotic mechanisms, Proc. of 1987 IEEE International Conf. on Robotics and Automation, pp.991–998(1987)Google Scholar
  3. [3]
    S. A. Schneider, R. H. Cannon, Jr., Object impedance control for cooperative manipulation: Theory and experimental results, IEEE Trans. on Robotics and Automation, Vol. RA-8, No. 3, pp. 383–394(1992).CrossRefGoogle Scholar
  4. [4]
    G. P. Starr, An experimental investigation of object stiffness control using a multifingered hand, Robotics and Autonomous Systems 10, pp. 33–42(1992).CrossRefGoogle Scholar
  5. [5]
    M. T. Mason, J. K. Salisbury, Robot Hands and the Mechanics of Manipulation, MIT Press(1985).Google Scholar
  6. [6]
    H. Maekawa, K. Yokoi, K. Tanie, M. Kaneko, N. Kimura, N. Imamura, Development of a three-fingered robot hand with stiffness control capability, Mechatronics, Vol. 2, No. 5, pp. 483–494(1992).CrossRefGoogle Scholar
  7. [7]
    N. Imamura, M. Kaneko, K. Yokoi, K. Tanie, Development of a two-fingered robot hand with compliance adjustment capability, Proc. of 1990 Japan-U.S.A. Symposium on Flexible Automation, pp. 997–1004 (1990).Google Scholar

Copyright information

© Springer-Verlag Wien 1997

Authors and Affiliations

  • K. Tanie
    • 1
  • H. Maekawa
    • 1
  • Y. Nakamura
    • 2
  1. 1.Mechanical Engineering LaboratoryAIST-MITITsukubaJapan
  2. 2.NTT Human Interface LaboratoriesTokyoJapan

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