Rotary motion generated by synthesized circular / elliptic drive with straight-move ultrasonic motors

In order to achieve more complicated movements necessary to a robot, stage of a microscope, etc., we have proposed a new rotation and movement mechanism. Combining the technology of bimorph-type vibrators with synthesization of drive voltage forms, we showed the possibility of achieving not only rotation but also movement simultaneously. The efficiencies vs. drive voltage forms were also illustrated.