Moving apparatus utilizing a self-synchronized phenomenon (1st report, analysis of basic performance by applying shooting method and experimental verification)

A moving apparatus utilizing a self-synchronized phenomenon is developed. This system consists of two mass-blocks coupled by a spring and a dashpot, and a pair of two unbalance masses rotated by DC motor is mounted on each mass-block. When a comparatively close voltage is supplied to each DC motor, the unbalance masses on the mass-blocks rotate at the same average rotational speed automatically and also the mass-blocks vibrate in the coupling direction at the same frequency. The system, then, moves on a floor at a constant average speed due to an unsymmetrical property of dry friction force acting on each mass-block from the floor. The automatically synchronized rotation of the unbalance masses can be regarded as a self-synchronized phenomenon. In this report, the basic property of the moving performance is analyzed by applying the improved shooting method and the analytical results are verified by comparing with experimental ones.