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Static Characteristic Analysis of Spatial (Non-Planar) Links in Planar Parallel Manipulator

Published online by Cambridge University Press:  06 May 2020

M. Ganesh Open the ORCID record for M. Ganesh [Opens in a new window] ,
Anjan Kumar Dash ,
P. Venkitachalam  and
S. Shrinithi
M. Ganesh*
Affiliation:
School of Mechanical Engineering, SASTRA University, Thanjavur 613 402, India. E-mails: anjandash@mech.sastra.edu, urpalvenki@gmail.com, shrinithi3@gmail.com
Anjan Kumar Dash
Affiliation:
School of Mechanical Engineering, SASTRA University, Thanjavur 613 402, India. E-mails: anjandash@mech.sastra.edu, urpalvenki@gmail.com, shrinithi3@gmail.com
P. Venkitachalam
Affiliation:
School of Mechanical Engineering, SASTRA University, Thanjavur 613 402, India. E-mails: anjandash@mech.sastra.edu, urpalvenki@gmail.com, shrinithi3@gmail.com
S. Shrinithi
Affiliation:
School of Mechanical Engineering, SASTRA University, Thanjavur 613 402, India. E-mails: anjandash@mech.sastra.edu, urpalvenki@gmail.com, shrinithi3@gmail.com
*
*Corresponding author. E-mail: ganeshm@mech.sastra.edu
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Summary

Conventional planar manipulators have their links in a single plane. Increasing payload at the end effector/mobile platform can induce high stress in the links due to the cantilever nature of links. Thus, it limits the total vertical load that can be applied on the mobile platform. In contrast to the links in conventional planar parallel mechanisms, non-planar links are proposed in this paper, that is, links are made inclined to the horizontal plane and non-planar legs are constructed. Though the links are made non-planar, the end effectors’ planar motion is retained. For studying the application of such non-planar links in planar manipulators, new models of inertia, stiffness and leg dynamics have to be developed. In this article, these models are developed by the static analysis of the planar manipulators with non-planar links, and the performance is compared with the corresponding conventional planar manipulators.

Keywords

3-R̄RR planar parallel robotMoment of InertiaStiffness analysis and optimization
Type
Articles
Information
Robotica , Volume 39 , Issue 1 , January 2021 , pp. 88 - 106
Copyright
Copyright © The Author(s) 2020. Published by Cambridge University Press

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