Design and kinematic analysis of a rotary positioner






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Design and kinematic analysis of a rotary positioner




  • Borys Shchokin (a1) and Farrokh Janabi-Sharifi (a1)




    • (a1)
      Robotics, Mechatronics, and Manufacturing Automation Laboratory, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada. E-mail: fsharifi@ryerson.ca





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    • https://doi.org/10.1017/S0263574706003006

    • Published online: 01 September 2006













Abstract




A rotary positioner (RP) is a type of parallel manipulator that is similar to a Stewart Platform. Instead of having variable-length bars, however, an RP has constant-length limbs located between a mobile platform as well as six circular motors distributed on a circular base. This paper offers a detailed investigation of an RP, focusing on its mechanism and analyzing its forward and inverse kinematics. It also computes an RP's constant orientation and orientation workspaces, taking into account the constraints imposed by passive joints and links interference. The optimal combination of the main parameters for an RP's maximum possible translation and orientation is also provided.









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    Corresponding author. E-mail: borys.shchokin@sympatico.ca










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    Robotica






    • ISSN: 0263-5747



    • EISSN: 1469-8668



    • URL: /core/journals/robotica

























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    Keywords








    • Parallel manipulator


    • Kinematics


    • Workspace


    • Optimization


    • Parametrical synthesis






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