Robot personality based on the equations of emotion defined in the 3D mental space

The authors deal with 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 emotion. When humans communicate through auditory or visual sensations, they estimate their mental state through not only the information of each sensation but also their mental model. A robot´s mental model consists of a 3D mental space having a pleasantness, and activation and a certainty axes. When the robot senses the stimulus, a mental vector moves in this mental space based on the equations of emotion. We also propose a robot personality which consists of sensing personality and expression personality. Further, we assign and load various sensing personalities.