The complex kinematic structure of a human thumb makes it difficult to capture and control the thumb motions. A further complication is that mapping the fingertip position alone leads to inadequate grasping postures for current robotic hands, many of which are equipped with tactile sensors on the volar side of the fingers. This paper aimed to use a data glove as the input device to teleoperate the thumb of a humanoid robotic hand. An experiment protocol was developed with only minimum hardware involved to compensate for the differences in kinematic structures between a robotic hand and a human hand. A nonlinear constrained-optimization formulation was proposed to map and calibrate the motion of a human thumb to that of a robotic thumb by minimizing the maximum errors (minimax algorithms) of fingertip position while subject to the constraint of the normals of the surfaces of the thumb and the index fingertips within a friction cone. The proposed approach could be extended to other teleoperation applications, where the master and slave devices differ in kinematic structure.
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September 2014
Research-Article
An Optimization Approach to Teleoperation of the Thumb of a Humanoid Robot Hand: Kinematic Mapping and Calibration
Lei Cui,
Lei Cui
1
Department of Mechanical Engineering,
e-mail: lei.cui@curtin.edu.au
Curtin University
,Kent Street
,Bentley, Western Australia 6102
, Australia
e-mail: lei.cui@curtin.edu.au
1Corresponding author.
Search for other works by this author on:
Jian S. Dai
Jian S. Dai
Centre for Robotics Research,
King's College London,
e-mail: jian.dai@kcl.ac.uk
King's College London,
University of London
,Strand, London WC2R 2LS
, UK
e-mail: jian.dai@kcl.ac.uk
Search for other works by this author on:
Lei Cui
Department of Mechanical Engineering,
e-mail: lei.cui@curtin.edu.au
Curtin University
,Kent Street
,Bentley, Western Australia 6102
, Australia
e-mail: lei.cui@curtin.edu.au
Ugo Cupcic
Jian S. Dai
Centre for Robotics Research,
King's College London,
e-mail: jian.dai@kcl.ac.uk
King's College London,
University of London
,Strand, London WC2R 2LS
, UK
e-mail: jian.dai@kcl.ac.uk
1Corresponding author.
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received October 26, 2013; final manuscript received May 19, 2014; published online June 13, 2014. Assoc. Editor: Matthew B. Parkinson.
J. Mech. Des. Sep 2014, 136(9): 091005 (7 pages)
Published Online: June 13, 2014
Article history
Received:
October 26, 2013
Revision Received:
May 19, 2014
Citation
Cui, L., Cupcic, U., and Dai, J. S. (June 13, 2014). "An Optimization Approach to Teleoperation of the Thumb of a Humanoid Robot Hand: Kinematic Mapping and Calibration." ASME. J. Mech. Des. September 2014; 136(9): 091005. https://doi.org/10.1115/1.4027759
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