Abstract
This paper describes the design of a 7 degree-of-freedom (d.o.f) manipulator for underwater inspection applications. The functional requirements of an underwater manipulator for subsea inspection are discussed and the desired performance requirements identified. The inspection process of a weld joint using a manipulator is described and the desirable attributes of a 5 d.o.f manipulator for the inspection process established. A novel kinematic structure, for Underwater Robotic Vehicle (URV) operation, having a 2 d.o.f launching stages and a 5 d.o.f inspection stage is proposed for the manipulator. This configuration increases the dexterity, without compromising on the total reach of the manipulator. The kinematic structure of the 7 d.o.f, 2 stage, manipulator is presented. A hybrid power actuation is proposed for the manipulator to exploit the benefits of both hydraulic as well as electric actuators. Kinematic analysis of the manipulator is presented. The link dimensions of the inspection stage manipulator is done on the basis of kinematic performance indices of the manipulator. The novel kinematic structure and the hybrid power actuation strategy results in a power efficient, dexterous manipulator for underwater applications.
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References
Andeen, B. G. (ed.): 1988, Robot Design Handbook, CSRI International, McGraw-Hill.
Andrew, J. T.: 1993, Design issues for underwater manipulator systems, Mechatronics 3(4), 419‐432.
Angeles, J.: 1997, Fundamentals of Robotic Systems. Theory, methods and Algorithms, Springer, New York.
Asokan, T. and Seet, G.: 2001, Design considerations and parameter estimation through kinematic/kinetic performance analysis of a 7 d.o.f underwater manipulator, in: Proc. of Internat. Conf. on Multidisciplinary Design in Engineering, 21‐22 November, Concordia University, Montreal, Canada.
Asokan, T., Seet, G., and Choudhury, S.: 2001a, On the design of a 7 d.o.f hybrid powered multistage manipulator for underwater applications, in: Proc. of Internat. Conf. on Computational Intelligence, Robotics and Autonomous Systems, Singapore, pp. 64‐69.
Asokan, T., Seet, G., and Choudhury, S.: 2001b, Kinematic analysis of a 7 d.o.f hybrid powered multi-stage manipulator for underwater applications, in: Proc. of Internat. Nat. Conf. on Computational Intelligence, Robotics and Autonomous Systems, Singapore, pp. 106‐110.
Asokan, T., Seet, G., and Choudhury, S.: 2002, Design issues of a dexterous manipulator for underwater applications, J. Robotic Res. Center, Nanyang Technological University, Singapore, pp. 40‐44.
Barry F., Stevan, B. S., Charles, F. R., and William, S. G.: 1994, URSULA: Design of an underwater manipulator for nuclear reactor vessel inspection, robotics for challenging environments, in: Proc. of ASCE Speciality Conference, New Mexico, pp. 311‐319.
Ceccarelli, M.: 1995, Optimal design and location of manipulators, in: M. Pereira and J. Ambrosio (eds), Computational Dynamics in Multibody Systems, pp. 131‐146.
Denavit, J. and Hartenberg, R. S.: 1955, Kinematic notation for lower pair mechanisms based on matrices, J. Appl. Mech., 215‐221.
Francis, A. G. (ed.): 1989, Introduction to Oil and Gas Technology, Prentice-Hall, Englewood Cliffs, NJ.
Greig, A. R. and Broome, D. R.: 1994, Development of a robotic underwater manipulator, Trans. Internat. Nat. Marine Engrg. 106(5), 217‐229.
Lee, M. Y., Erdman, A. G., and Gutman, Y.: 1993, Development of kinematic/kinetic performance tools in synthesis of multi DOF mechanisms, ASME J. Mech. Design 115, 462‐470.
Lee, M. Y., Erdman, A. G., and Gutman, Y.: 1994, Kinematic/kinetic performance analysis and design tools for robotic mechanisms, ASME Design Engrg. Robotics: Kinematics Dynamics Controls 72, 73‐82.
Low C. K.: 2000, Defect evaluation using alternating current field measurement technique, Project Report, Nanyang Technological University, Singapore.
Reddy, D. V. and Arockiasamy, M. (eds): 1991, Offshore Structures, Vol. 1, Krieger Publishing, Florida.
Seet, G., Lau, M., Low, E., and Cheng, P. L.: 2001, A unified pilot training and control system for underwater robotic vehicles, J. Intelligent Robotic Systems 32, 279‐290.
Vijaykumar, R., Waldron, K. J., and Tsai, M. J.: 1986, Geometric optimization of serial chain manipulator structures for working volume and dexterity, Internat. J. Robotics Res. 2, 91‐103.
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Asokan, T., Seet, G., Iastrebov, V. et al. Kinematic Design and Analysis of a 7 Degree-of-Freedom Dual-Stage Inspection Manipulator for Dexterous Subsea Applications. Journal of Intelligent and Robotic Systems 38, 277–295 (2003). https://doi.org/10.1023/B:JINT.0000004911.71783.e7
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DOI: https://doi.org/10.1023/B:JINT.0000004911.71783.e7