Mechanical Design of a Spatial Mechanism for the Robot Head Configuration in Social Robotics
The manuscript presents the mechanical design of the head configuration in the Human Robot Interaction (HRI) used for the message transmission of emotions through nonverbal communications styles. The evolution of this structure results on a natural movement reproduction for the implementation of non-verbal communication strategies in a normal behavior, achieve the main patterns to evaluate the social interaction with the robotic platform. The mechanical design result from a biomechanical evaluation of the Pitch, Roll, and Yaw trajectories of the human head and neck. The spatial mechanisms, according to the Grübber formula for Spatial Robots, allows 4 degrees of freedom. The spatial chain has universal, prismatic, spiral and revolute joins of the mechanical model-ling. This CAD model permit the 3D print of cardan elements to performance the structure of the mechanisms. The appearance is friendly and the interface reach similar capabilities than a human would have for communication. Finally, human interaction through the head movement gives the opportunity in the future for the evaluation of more parameters of the social robotic interaction between robots-humans and robots-robots.
KeywordsAdditive manufacturing Spatial mechanism Biomechanics Social robotics Mechanical design Structural design
The authors would like to express their very great appreciation to L’Hospitalet City Hall and the BarcelonaTech in Barcelona, Spain for providing the research facilities used in this study. We are particularly grateful for the encouraging support of Mr. Ricardo Castro at La Bóbila Cultural Center. As well very thanks at the Universidad Tecnológica Indoamérica and the Escuela Superior Politécnica del Litoral.
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