Supporting Reaching Movements of Robotic Hands Subject to Communication Delay by Displaying End Effector Position Using Three Orthogonal Rays

• Published in: Journal of robotics and mechatronics Vol. 29; no. 5; pp. 819 - 828
• Main Authors: Chinen, Akihito, Hoshino, Kiyoshi
• Format: Journal Article
• Language: English
• Published: Tokyo Fuji Technology Press Co. Ltd 01.10.2017
• Subjects: Communication; Delay; End effectors; Grasping (robotics); Moon; Operation support systems; Remote control; Robotics; Servocontrol; Support systems
• ISSN: 0915-3942; 1883-8049
• DOI: 10.20965/jrm.2017.p0819

In this paper, we propose an operation support system, which shows the spatial relation between a robotic hand and an object, to overcome reduced usability due to communication delay. A communication delay of four seconds occurs during remote operation between the earth and the moon. Previous studies have used a method that feeds back the predicted position of a robotic hand after the communication delay occurs. However, this does not allow an accurate reaching motion necessary for grasping. Therefore, we try to show the spatial relation between a robotic hand and an object using three orthogonal rays, where each is annotated with 1 cm increments. Based on the results of our experiments, the grasping success rate of the proposed method increases by three times. As a result, the proposed method is effective in making accurate reaching motions for grasping in the visual-servoing remote control between the earth and the moon.