Abstract
We report a novel high-speed rotary ultrasonic motor, which works at the out-of-plane vibration mode (B11 mode). This motor contains one tapered rotor and one metal disk-shaft shaped stator. The stator's vibration mode B11 is excited by two pairs of piezoelectric ceramics attached to the bottom face of the disk. Through the traveling wave propagation at the contact faces, the shaft located at the center of the metal disk can effectively drive the rotor pressed onto it to rapidly rotate. One prototype motor with the appearance size of Φ 29 mm × 8 mm and a mass of 13 g is fabricated, and the experimental results show that it can rotate at a relatively high speed of up to 7000 rpm at the driving voltage of 350 Vp-p. The steady speed of the motor is 5000 rpm, and the maximum output torque is about 0.5 mN m. With merits of high speed revolution, a simple structure and a compact size, this motor is highly promising for many applications, such as precise instruments and miniaturized industrial robots.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.