Design and Development of an Emotional Interaction Robot, Mung

Abstract

The purpose of this study is to develop an interactive and emotional robot that is designed with passive characteristics and a delicate interaction concept using the interaction response: 'Bruises and complexion color due to emotional stimuli'. In order to overcome the mismatch of cue realism issues that cause the Uncanny Valley, an emotional interaction robot, Mung, was developed with a simple design composed of a body and two eyes. Mung could recognize human emotions from human-robot or human-human verbal communications. The developed robot expresses its emotions according to its emotional state modeled by a mass-spring-damper system with an elastic-hysteresis spring. The robot displays a bruise when it is in a negative emotional state, the same as a human becomes bruised when being physically hurt, and the robot shows a natural complexion when its emotional wound is removed. The effectiveness of the emotional expression using color with the concepts of bruising and complexion colors is qualified, and the feasibility of the developed robot was tested in several exhibitions and field trials. (c) Koninklijke Brill NV, Leiden and The Robotics Society of Japan, 2009