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Communication Dans Un Congrès Année : 2008

Stiffness Analysis of 3-d.o.f. Overconstrained Translational Parallel Manipulators

Résumé

The paper presents a new stiffness modelling method for overconstrained parallel manipulators, which is applied to 3-d.o.f. translational mechanisms. It is based on a multidimensional lumped-parameter model that replaces the link flexibility by localized 6-d.o.f. virtual springs. In contrast to other works, the method includes a FEA-based link stiffness evaluation and employs a new solution strategy of the kinetostatic equations, which allows computing the stiffness matrix for the overconstrained architectures and for the singular manipulator postures. The advantages of the developed technique are confirmed by application examples, which deal with comparative stiffness analysis of two translational parallel manipulators.
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Dates et versions

hal-00257728 , version 1 (20-02-2008)

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Anatol Pashkevich, Damien Chablat, Philippe Wenger. Stiffness Analysis of 3-d.o.f. Overconstrained Translational Parallel Manipulators. ICRA IEEE Int. Conference on Robotics and Automation, May 2008, Pasadena, United States. pp.6. ⟨hal-00257728⟩
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