Capturing noncooperative targets in space has great prospects for aerospace application. In this work, the knuckle unit of a large-scale reconfigurable space multifingered hand (LSRSMFH) for multitask requirements is studied. A plurality of knuckle units is connected in series to form a finger of the LSRSMFH. First, the lockable spherical (lS) joint, a new metamorphic joint that can function as a Hooke (lS1) or spherical (lS2) joint and is driven by shape memory alloy (SMA) material, is proposed. Based on the lS joint, this paper presents a new metamorphic parallel mechanism (MPM) (i.e., 3RRlS MPM), which has four configurations, namely, 3RRlS1, 3RRlS2, 2RRlS1-RRlS2, and 2RRlS2-RRlS1 configuration. The degree-of-freedom (DOF), overconstraint, and parasitic motion of the 3RRlS MPM are analyzed using screw theory, of which the DOF can be changed from 1 to 3. The 3RRlS1 configuration has a virtual constraint, and the 3RRlS2 configuration has parasitic motions. The results indicate that the mechanism motion screws can qualitatively represent the mechanism parasitic motions, and it is verified by deriving the kinematic equation of the 3RRlS MPM based on its spatial geometric conditions, the workspace of the 3RRlS MPM is further solved. The kinematic analysis indicates that the 3RRlS MPM can realize the folding, capturing, and reconfiguring conditions of the LSRSMFH.
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August 2018
Research-Article
Design and Kinematic Analysis of a 3RRlS Metamorphic Parallel Mechanism for Large-Scale Reconfigurable Space Multifingered Hand
Chong Zhao,
Chong Zhao
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: chon.zhao@qq.com
Harbin Institute of Technology,
Harbin 150001, China
e-mail: chon.zhao@qq.com
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Hongwei Guo,
Hongwei Guo
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: guohw@hit.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: guohw@hit.edu.cn
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Rongqiang Liu,
Rongqiang Liu
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: liurq@hit.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: liurq@hit.edu.cn
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Zongquan Deng,
Zongquan Deng
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: Dengzq@hit.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: Dengzq@hit.edu.cn
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Bing Li
Bing Li
Shenzhen Graduate School,
Harbin Institute of Technology,
Shenzhen 518055, China
e-mail: libing.sgs@hit.edu.cn
Harbin Institute of Technology,
Shenzhen 518055, China
e-mail: libing.sgs@hit.edu.cn
Search for other works by this author on:
Chong Zhao
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: chon.zhao@qq.com
Harbin Institute of Technology,
Harbin 150001, China
e-mail: chon.zhao@qq.com
Hongwei Guo
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: guohw@hit.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: guohw@hit.edu.cn
Rongqiang Liu
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: liurq@hit.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: liurq@hit.edu.cn
Zongquan Deng
State Key Laboratory of Robotics and System,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: Dengzq@hit.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: Dengzq@hit.edu.cn
Bing Li
Shenzhen Graduate School,
Harbin Institute of Technology,
Shenzhen 518055, China
e-mail: libing.sgs@hit.edu.cn
Harbin Institute of Technology,
Shenzhen 518055, China
e-mail: libing.sgs@hit.edu.cn
1Corresponding author.
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the JOURNAL OF MECHANISMS AND ROBOTICS. Manuscript received October 25, 2017; final manuscript received May 8, 2018; published online June 18, 2018. Assoc. Editor: Hai-Jun Su.
J. Mechanisms Robotics. Aug 2018, 10(4): 041012 (12 pages)
Published Online: June 18, 2018
Article history
Received:
October 25, 2017
Revised:
May 8, 2018
Citation
Zhao, C., Guo, H., Liu, R., Deng, Z., and Li, B. (June 18, 2018). "Design and Kinematic Analysis of a 3RRlS Metamorphic Parallel Mechanism for Large-Scale Reconfigurable Space Multifingered Hand." ASME. J. Mechanisms Robotics. August 2018; 10(4): 041012. https://doi.org/10.1115/1.4040356
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