Workspace and Assembly modes in Fully-Parallel Manipulators : A Descriptive Study

Philippe Wenger (1) , Damien Chablat (1)

1 IRCCyN - Institut de Recherche en Communications et en Cybernétique de Nantes

The goal of this paper is to explain, using a typical example, the distribution of the different assembly modes in the workspace and their effective role in the execution of trajectories. The singular and non-singular changes of assembly mode are described and compared to each other. The non-singular change of assembly mode is more deeply analysed and discussed in the context of trajectory planning. In particular, it is shown that, according to the location of the initial and final configurations with respect to the uniqueness domains in the workspace, there are three different cases to consider before planning a linking trajectory.

Mots clés: Parallel Manipulator; Aspects; Singularities; Trajectory Planning; Assembly Modes; Uniqueness Domains.; Uniqueness Domains

Domaines: Robotique [cs.RO]

Philippe Wenger, Damien Chablat. Workspace and Assembly modes in Fully-Parallel Manipulators : A Descriptive Study. ARK, 1998, Austria. pp.117-126. ⟨hal-00162563⟩