Workspace Analysis and Mechanical Innovation of YWZ Dexterous Hand

Abstract:

Degrees of freedom (DOFs) and workspace are important factors to evaluate the flexibility of the dexterous hand. This paper develops an original dexterous hand, which has 20 active DOFs and adjustable thumb. Imitating the human hand bone structure, we design a full driven multi-fingered anthropomorphic robot hand (YWZ dexterous hand). For the thumb of YWZ dexterous hand, we innovatively design a metacarpal phalange mechanical structure to adjust thumb’s assembly position and radial orientation relative the palm. We construct coordinate systems to deduce the finger kinematic equations and analyze the finger workspace. A physical prototype of YWZ dexterous hand was manufactured to test its kinematic characteristics and workspace. Experimental results validate the YWZ dexterous hand has large workspace, excellent operating flexibility.

• Periodical: Advanced Materials Research (Volume 338)
• Pages: 557-565
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.338.557
• Online since: September 2011
• Authors: Wen Zhen Yang, Hua Zhang, Shi Guang Yu, Wen Hua Chen
• Keywords: Dexterous Hand, Kinematics, Thumb, Workspace

References

[1] Okada T: Computer control of multijointed finger system for precise object-handing, IEEE Transaction on Systems, Man and Cybernetics, (1982), 12(3), pp.289-299.

DOI: 10.1109/tsmc.1982.4308818

[2] Lovchik C S and Difler M A: The Robonaut hand: A dextrous robotic hand for space. Proceedings of IEEE International Conference on Robotics and Automation, Detroit, (1999), pp.907-912.

DOI: 10.1109/robot.1999.772420

[3] Shadow Robot Company, Inc.Considered to be the Most Advanced Dexterous Hand in the World [EB/OL]. (2007). http:∥ www. Shadow robot.com/ hand/ overview shtml.

[4] Mouri T, Kawasaki H, Yoshikawa K, et al: Anthropomorphic robot hand: Gifu hand III. Proceedings of IEEE International Conference on Control, Automation and Systems, Jeonbuk, (2002), pp.1288-1293.

DOI: 10.1299/jsmermd.2002.112_4

[5] Shaowei Fan and Yiwei Liu: Journal of Harbin Engineering University, 2009, 30(2):171-177(In Chinese).

[6] Jacobsen S C, Wood J E, Knutti D F, et al: The International Journal of Robotics Research, (1984), 3(4), pp.21-50.

[7] Caffaz A and Cannata G: The design and development of the DIST-Hand dextrous gripper. Proceedings of IEEE International Conference on Robotics and Automation, Leuven, (1998), p .2075-2080.

DOI: 10.1109/robot.1998.680623

[8] Saut, J.P., Sahbani, A. and Perdereau, V. A: Proc. of Control, Automation, Robotics and Vision, (2006), p.1~6.

[9] Yisheng Guan and Hong Zhang: Workspace of 3-D Multi-fingered Manipulation[C]. IEEE/RSJ International Conference on Intelligent Robots and Systems, (2008), p.2679~2684(In Chinese).

DOI: 10.1109/iros.2008.4650691

[10] Yiwei Liu: Journal of Harbin Institute of Technology. (2009), pp.376-381(In Chinese).

[11] Jun Ueda: Mechanism and Machine Theory. 45 (2010), p.224–238.