tailieunhanh - Advances in Human Robot Interaction Part 6

Tham khảo tài liệu 'advances in human robot interaction part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 114 Advances in Human-Robot Interaction Fig. 2. Motion overlap. Feasibility Since a robot needs to move for achieving tasks so a motion-based approach requires no additional component such as a LED or a speaker. The additional nonverbal components make a robot quite more complicated and expensive. Variation The motion-based approach enables us to design informational movement to suit different tasks. The variety of movements is far larger than that of sounds or light signals of other nonverbal methods. Less stress Other nonverbal methods particularly sound may force a user to strong attention at a robot causing more stress than movement. The motion-based approach avoids distracting or invasive interruption of a user who notices the movement and chooses whether or not to respond. Effectiveness Motion-based information is intuitively more effective than other nonverbal approaches because interesting movement attracts a user to a robot without stress. While feasibility variety and stress minimization of motion-based information are obviously valid we need to verify effectiveness needs to be verified experimentally. Implementing MO on a mobile robot We designed robot s movements which a user can easily understand by imagining what a human may do when he she faces with an obstacle-removal task. Imagine that you see a person who has baggage and hesitates nervously in front of a closed door. Almost all the human observers would immediately identify the problem that the person needs help to Making a Mobile Robot to Express its Mind by Motion Overlap 115 open the door. This is a typical situation in TOM. Using similar hesitation movement could enable a robot to inform a user that it needs help. A study on human actions in doing tasks Suzuki Sakai 2001 defines hesitation as movement that suddenly stops and either changes into other movement or is suspended a definition that our back and forth movement fits Fig. 3 . Seeing a robot moves back and forward in a short time in