Abstract
In order to clarify the design guidelines for vibrational friction motors, their driving characteristics were investigated theoretically and experimentally. First, the effects of shape and vibration mode of the stator on the driving efficiency were analyzed by calculating the tangential velocity of the stator using FEM without considering the collision between the stator and the rotor. Next, the relationships between the conditions of the collision surface and the driving force were measured with an experimental apparatus of which structural parameters were best tuned according to its dynamic model. With these analysis and experiments, the best conditions of the stator shape, vibration mode and the collision surface were clarified.
