Experimental study on robot personality for humanoid head robot

The authors have been developing human-like head robots in order to develop new head mechanisms and functions for a humanoid robot that has the ability to communicate naturally with a human by expressing human-like emotions. We think that the personality of the robot is extremely important in attaining smooth and effective communication. We introduced a robot personality that consists of the Sensing Personality and the Expression Personality. The Sensing Personality determines how a stimulus works for a robot's mental state. A 3D mental space was defined in the robot. Seven emotions were mapped out in the 3D mental space. After the robot determines its emotion, it expresses its emotion by the Expression Personality. We expressed the Expression Personality using a matrix. Moreover, we assigned and loaded six robot personalities into the robot. The robot can express various personalities.