A single-rotary ultrasonic motor excitation

The present invention discloses a single excitation rotating the ultrasonic motor, comprising a rotor disk and a friction layer disposed on a surface of the turntable; a stator comprising an ultrasonic vibration transducer, a friction ellipse vibration mode converter and disposed elliptical vibration modal conversion front end driving block; ultrasonic vibration transducer comprises a bolt and a rear cover plate are sequentially provided on the bolt, piezoelectric ceramics, and the electrode sheet front cover, the front cover is coupled by a screw and bolt; elliptical vibration mode converter is provided the front end of the front cover, the entire cylindrical cutout defines a rectangular upper and lower sides of the distribution of three displacement, ultrasonic vibration generated by the transducer may be converted to ultrasonic vibration elliptical longitudinal vibration mode transducer, and a friction drive end block elliptical vibrations, and continuous rotational movement of the drive rotor.