Pendulum-type Force Presentation Device for Correction of Writing Motion

Abstract

For body movement instruction, various wearable devices have been proposed. However, their users sometimes suffer from a sense of restraint because of the structures of such devices. Therefore, the authors proposed a novel instruction device with a pendulum that is attached to a tool, not to the user’s body, that is, this device does not restrain the user’s body movement. As the center of gravity of the developed device that is attached to the tool translates by swinging the pendulum, the user is expected to perceive a guiding force as if the user’s body is moved by an external guiding force. In this paper, in order to shorten the reaction time until the user perceives the presented guiding force generated by the pendulum, the effective configurations of the pendulum device, i.e., the angular velocity of the pendulum rotation, the mass, the length and the rotation angle of the pendulum are experimentally investigated.