This paper presents a disc-type ultrasonic piezoelectric motor, which is designed for micro flying vehicles. It provides high output rotation speed under low operating voltage, compared with common devices, by employing “contact teeth” wave transmission structure. The motor (USM) consists of trimorph disc stator, triple internal contact teeth, shaft and two hemispheric hard-wearing rotors. prin...

The development process and experimental investigation of the multicell piezoelectric motor is presented in this paper. proposed design consists three individual cells integrated into stator, double rotor, a preload system. Those elements are combined symmetrical structure motor. two new prototypes have been designed, simulated tested. Finite element numerical analysis carried out to obtain opt...

To meet the higher accuracy, stiffness and speed demands of positioning systems of machine tools and measuring instruments, two motor concepts are developed with an integrated bearing-driving functionality. For both concepts, piezoelectric technology is used as actuator principle. In the first concept, the limited stroke of piezoactuators is overcome by a travelling-wave principle, which assure...

The risk of accidental dislodgement of robot-operated surgical mechanisms can lead to morbidity or mortality. The force and torque applied by a 3.0-tesla scanner on an ultrasonic motor are not fully known. The force and torque may displace the motor, which is not fully magnetic resonance imaging (MRI)-compatible but can be safely used in MR environments. A suspension apparatus was designed to m...