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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/6884

Title: A new method to approximate the field of movements of 1-DOF linkages with lower-pairs
Author(s): Noriega González, Álvaro
Cortizo Rodríguez, José Luis
Rodríguez Ordóñez, Eduardo
Vijande Díaz, Ricardo
Sierra Velasco, José Manuel
Keywords: Linkage
Position Problem
Optimization
Evolution Strategy
Issue date: 2010
Publisher: Springer
Publisher version: http://dx.doi.org/10.1007/s11012-010-9283-2
Citation: Meccanica, 45(5), (2010); doi:10.1007/s11012-010-9283-2
Format extent: p. 681-692
Abstract: This paper presents a new method to obtain an approximation of the field of movements of a 1-DOF linkage with lower pairs. The method is based on a linkage representation by natural coordinates and the storage of the constraint equations by means of a sparse cubic matrix. To obtain a discrete approximation of the field of movements, a three-stage process is used. In the first stage, a special Evolution Strategy is applied to make the population converges towards the zones where the constraints error is minimal, obtaining, at the same time, a good distribution of individuals. In the second stage, the final individuals of the ES are used as initial points for a derivative algorithm to obtain a greater accuracy. Later, the third stage is a filtering process to eliminate individuals that represent non-desired solutions. This method has been tested on simple linkages with well-known fields of movements, generating comprehensive outcomes that justify the validity of the method.
URI: http://hdl.handle.net/10651/6884
ISSN: 0025-6455
Appears in Collections:Construcción e Ingeniería de Fabricación
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