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JRM Vol.16 No.1 pp. 1-7
doi: 10.20965/jrm.2004.p0001
(2004)

Paper:

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Dynamic Control of Curve-Constrained Hyper-Redundant Manipulators

Shugen Ma*, and Mitsuru Watanabe**

*Department of Systems Engineering, Faculty of Engineering, Ibaraki University, 4-12-1 Nakanarusawa-Cho, Hitachi-Shi 316-8511, Japan

**NEC Tokin Corporation, 6-7-1 Kohriyama, Taihaku-Ku, Shendai-Shi 982-8510, Japan

Received:
July 18, 2003
Accepted:
November 6, 2003
Published:
February 20, 2004
Creative Commons License
Keywords:
robot manipulator, hyper-redundancy, real-time posture control, posture space, workspace
Abstract
Hyper-redundant manipulators have high number of kinematic degrees of freedom, and possess unconventional features such as the ability to enter narrow spaces while avoiding obstacles. To control these hyper-redundant manipulators accurately, manipulator dynamics should be considered. This is, however, time-comsuming and makes implementation of real-time control difficult. In this paper, we propose a dynamic control scheme for hyper-redundant manipulators, which is based on analysis in defined posture space where three parameters were used to determine the manipulator posture. Manipulator dynamics are modeled on the parameterized form with the parameter of the posture space path. The posture space path-tracking feed-forward controller is then formulated on the basis of a parameterized dynamic equation. Computer simulation, in which a hyper-redundant manipulator traces the posture space path well by using the proposed feed-forward controller, proved that the hyper-redundant manipulator tracks the workspace path accurately.
Cite this article as:
S. Ma and M. Watanabe, “Dynamic Control of Curve-Constrained Hyper-Redundant Manipulators,” J. Robot. Mechatron., Vol.16 No.1, pp. 1-7, 2004.
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