A calculation method of the reaction force and moment for a delta-type parallel link robot fixed with a frame

Authors:
Jangho Hong;Motoji Yamamoto
Affiliations:
Department of intelligent machinery and systems, kyushu university, 744 motooka, nishi-ku, fukuoka 819-0395, japan.;Department of intelligent machinery and systems, kyushu university, 744 motooka, nishi-ku, fukuoka 819-0395, japan.
Venue:
Robotica
Year:
2009

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Abstract

The paper presents a method of reaction force and moment calculation for a 3-RSS pure translational parallel link robot (Delta-type parallel robot), in which the inverse and forward kinematics of the parallel link robot are directly analyzed according to kinematic structure of the parallel robot. For dynamic analysis, the parallel robot is imaginarily parted into three serial ones, and their actual joint torques are determined by the virtual work principle. To obtain the reaction force and moment of the parallel robot acting on the base, which is the composition of the reaction forces and moments of the three serial robots, the Newton–Euler Method is adopted. To show the validity of the presented method, the simulation analysis and experimental results are given, the experimental results tally with the calculation value.