The study of the relationship between the desired system dynamics and the actuation wrench producing those dynamics is important for robotic system analysis. For traditionally actuated robots, the quality indices of dexterity and manipulability quantify this relationship. However, for unilaterally actuated robots (UARs), such as grasping hands and cable-driven parallel robots (CDPRs), these indices cannot be applied due to the unilateral actuation constraint. In this paper, the quality indices of unilateral dexterity (UD) and unilateral maximum force amplification (UMFA) are established for UARs with arbitrary number of actuators. It is shown that these quality indices provide task-independent quantifications of the physical properties of robustness and force amplification for UARs, and they can measure the mechanism’s capability both in singular and nonsingular poses. With these indices, manipulability ellipsoid-derived measures can be applied to arbitrary UARs. The significance of the quality indices for robot synthesis and motion generation analysis is illustrated through two case studies: a five-fingered grasp selection problem and the workspace analysis of a spatial CDPR.
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September 2019
Research-Article
Unilateral Manipulability Quality Indices: Generalized Manipulability Measures for Unilaterally Actuated Robots
Jonathan Eden,
Jonathan Eden
Department of Mechanical Engineering,
Melbourne School of Engineering,
Building 170,
Melbourne, Parkville, Victoria 3010,
e-mail: jpeden@student.unimelb.edu.au
Melbourne School of Engineering,
Building 170,
The University of Melbourne
,Melbourne, Parkville, Victoria 3010,
Australia
e-mail: jpeden@student.unimelb.edu.au
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Darwin Lau,
Darwin Lau
Department of Mechanical and Automation Engineering,
Room 213, William M. W. Mong Engineering Building,
Hong Kong, Shatin, NT,
e-mail: darwinlau@mae.cuhk.edu.hk
Room 213, William M. W. Mong Engineering Building,
The Chinese University of Hong Kong
,Hong Kong, Shatin, NT,
Hong Kong
e-mail: darwinlau@mae.cuhk.edu.hk
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Ying Tan,
Ying Tan
Department of Mechanical Engineering,
Melbourne School of Engineering,
Building 170,
Melbourne, Parkville, Victoria 3010,
e-mail: yingt@unimelb.edu.au
Melbourne School of Engineering,
Building 170,
The University of Melbourne
,Melbourne, Parkville, Victoria 3010,
Australia
e-mail: yingt@unimelb.edu.au
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Denny Oetomo
Denny Oetomo
Department of Mechanical Engineering,
Melbourne School of Engineering,
Building 170,
Melbourne, Parkville, Victoria 3010,
e-mail: doetomo@unimelb.edu.au
Melbourne School of Engineering,
Building 170,
The University of Melbourne
,Melbourne, Parkville, Victoria 3010,
Australia
e-mail: doetomo@unimelb.edu.au
Search for other works by this author on:
Jonathan Eden
Department of Mechanical Engineering,
Melbourne School of Engineering,
Building 170,
Melbourne, Parkville, Victoria 3010,
e-mail: jpeden@student.unimelb.edu.au
Melbourne School of Engineering,
Building 170,
The University of Melbourne
,Melbourne, Parkville, Victoria 3010,
Australia
e-mail: jpeden@student.unimelb.edu.au
Darwin Lau
Department of Mechanical and Automation Engineering,
Room 213, William M. W. Mong Engineering Building,
Hong Kong, Shatin, NT,
e-mail: darwinlau@mae.cuhk.edu.hk
Room 213, William M. W. Mong Engineering Building,
The Chinese University of Hong Kong
,Hong Kong, Shatin, NT,
Hong Kong
e-mail: darwinlau@mae.cuhk.edu.hk
Ying Tan
Department of Mechanical Engineering,
Melbourne School of Engineering,
Building 170,
Melbourne, Parkville, Victoria 3010,
e-mail: yingt@unimelb.edu.au
Melbourne School of Engineering,
Building 170,
The University of Melbourne
,Melbourne, Parkville, Victoria 3010,
Australia
e-mail: yingt@unimelb.edu.au
Denny Oetomo
Department of Mechanical Engineering,
Melbourne School of Engineering,
Building 170,
Melbourne, Parkville, Victoria 3010,
e-mail: doetomo@unimelb.edu.au
Melbourne School of Engineering,
Building 170,
The University of Melbourne
,Melbourne, Parkville, Victoria 3010,
Australia
e-mail: doetomo@unimelb.edu.au
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the Journal of Mechanical Design. Manuscript received July 8, 2018; final manuscript received May 11, 2019; published online July 19, 2019. Assoc. Editor: Ettore Pennestri.
J. Mech. Des. Sep 2019, 141(9): 092305 (11 pages)
Published Online: July 19, 2019
Article history
Received:
July 8, 2018
Revision Received:
May 11, 2019
Accepted:
May 17, 2019
Citation
Eden, J., Lau, D., Tan, Y., and Oetomo, D. (July 19, 2019). "Unilateral Manipulability Quality Indices: Generalized Manipulability Measures for Unilaterally Actuated Robots." ASME. J. Mech. Des. September 2019; 141(9): 092305. https://doi.org/10.1115/1.4043932
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