The univariate closure conditions of all fully parallel planar robots derived from a single polynomial

The real roots of the univariate polynomial closure condition of a planar parallel robot determine the solutions of its forward kinematics. This paper shows how the univariate polynomials of all fully parallel planar robots can be derived directly from that of the widely known 3-RPR robot by simply...

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Bibliographic Details
Authors: Rojas, Nicolás, Thomas, Federico
Format: article
Status:Versión aceptada para publicación
Publication Date:2013
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/96465
Online Access:http://hdl.handle.net/10261/96465
Access Level:Open access
Keyword:Forward kinematics
Position analysis
Planar Gough-Stewart platforms
Planar robots
Description
Summary:The real roots of the univariate polynomial closure condition of a planar parallel robot determine the solutions of its forward kinematics. This paper shows how the univariate polynomials of all fully parallel planar robots can be derived directly from that of the widely known 3-RPR robot by simply formulating these polynomials in terms of distances and oriented areas. This is a relevant result because it avoids the case-by-case treatment that requires different sets of variable eliminations to obtain the univariate polynomial of each fully parallel planar robot. © 2004-2012 IEEE.