Analysis of influencing factors on humanoid robots’ emotion expressions by body language

Abstract

In addition to speech, nonverbal behaviors of the human like facial expressions and body languages can also express emotions in socializing. It is expected to be known whether humanoid robots can also express their emotions in Human-Robot Interaction (HRI). This is a basic research problem since the humanoid robots are expected to be the members of our society. In this paper, we present humanoid robots’ capabilities of expressing emotions by body language and discuss the facts that may influence the emotion expression through questionnaire surveys and the statistic analysis. The research is carried out on the Nao robot and the results show that the expression of emotion is affected by the ambiguity of the body language and the joint limits of the robot.