Dynamics of the Orthoglide parallel robot

Damien Chablat (1) , Philippe Wenger (1) , Stefan Staicu (2)

1 IRCCyN - Institut de Recherche en Communications et en Cybernétique de Nantes
2 Department of Mechanics

Recursive matrix relations for kinematics and dynamics of the Orthoglide parallel robot having three concurrent prismatic actuators are established in this paper. These are arranged according to the Cartesian coordinate system with fixed orientation, which means that the actuating directions are normal to each other. Three identical legs connecting to the moving platform are located on three planes being perpendicular to each other too. Knowing the position and the translation motion of the platform, we develop the inverse kinematics problem and determine the position, velocity and acceleration of each element of the robot. Further, the principle of virtual work is used in the inverse dynamic problem. Some matrix equations offer iterative expressions and graphs for the input forces and the powers of the three actuators.

Mots clés: Dynamics; Kinematics; Parallel robot; Virtual work

Domaines: Robotique [cs.RO]

Damien Chablat, Philippe Wenger, Stefan Staicu. Dynamics of the Orthoglide parallel robot. Scientific Bulletin - "Politehnica" University of Bucharest. Series D, Mechanical engineering, 2009, 71 (3), pp.3-16. ⟨hal-00425143⟩