Distance-adjusted Fuzzy Interpersonal Motions Expression for Mobile Eye Robot in Mascot Robot System

Interpersonal motions and their expression using a fuzzy inference based on a mental distance type pleasure-arousal space are proposed for a mobile eye robot in a mascot robot system. An interpersonal motion that consists of an interpersonal distance, a motion speed, and a motion trajectory is determined according to verbal information received from human in an interactive situation using a proposed fuzzy inference based on a mental distance type pleasure-arousal space. Interactive experiments with two scenarios are performed in an information recommendation situation with the mascot robot system. Subjective estimations using psychological scale and impression estimations using SD method with the factor analysis are conducted for 11 subjects. Since the results of the subjective estimation show 3.08 and 2.62 (out of 6), the validity of the fuzzy interpersonal motions expression is confirmed. The results of the impression estimation show that the mobile eye robot gives a feeling of closeness. The system provides user-friendly and casual information recommendation, which is essential for wide spread family use.