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Geometric design of planar mechanisms based on virtual guides for manipulation

Published online by Cambridge University Press:  29 April 2015

Nina Robson  and
Shramana Ghosh
Nina Robson
Affiliation:
Mechanical Engineering Department, California State University, Fullerton, California, USA Mechanical and Aerospace Engineering Department, University of California, Irvine, California, USA
Shramana Ghosh*
Affiliation:
Mechanical and Aerospace Engineering Department, University of California, Irvine, California, USA
*
*Corresponding author. E-mail: [email protected]
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Summary

This paper presents recent results and applications of our planar kinematic synthesis of serial and parallel linkages to guide a rigid body, such that it does not violate normal direction and curvature constraints imposed by contact with objects in the environment. The paper briefly reviews the recently developed theory on transforming contact direction and curvature constraints into conditions on velocity and acceleration of certain points in the moving body to obtain synthesis equations which can, subsequently be solved to find the dimensions of a mechanical linkage. The main contribution of the paper is in demonstrating the applicability of the proposed theory to the kinematic synthesis of both open and closed-loop kinematic linkages. We provide preliminary results on the synthesis of kinematic chains based on novel task specifications that incorporate curvature constraints with a variety of applications, such as passive suspensions for small rovers, assistive technologies, as well as grasping.

Keywords

Planar kinematic synthesisPlanar linkagesHigher-order constrained motionGraspingAssistive technologyPassive suspensions
Type
Articles
Information
Robotica , Volume 34 , Issue 12 , December 2016 , pp. 2653 - 2668
Copyright
Copyright © Cambridge University Press 2015 

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References

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