Development of a Rotary Ultrasonic Motor with Double-Sided Staggered Teeth

Abstract

Based on the conventional structure of traveling wave ultrasonic motor, a rotary ultrasonic motor with double-sided staggered teeth was proposed. Both sides of the stator could be used to actuate the rotors to rotate and output torque. Moreover, the staggered teeth in the stator could be dedicated to accommodating the piezoelectric ceramic chips. Under the excitation of two alternating voltages with a 90° phase difference, a traveling wave could be generated in the ring-like stator. Then, a rotary motion could be realized by means of the friction between the rotors and the driving teeth of the stator. The finite element method was adopted to analyze the motion trajectories of the driving tips. Moreover, the experimental results showed that the load-free maximum speed and maximum output torque of the prototype were 99 rpm and 0.19 N·m at a voltage of 150 Vp with a frequency of 28.25 kHz.

Design and Locomotion Study of Two-DOF Actuator Driven by Piezoelectric–Electromagnetic Hybrid Mode

“…PEAs work by using the inverse piezoelectric effect of piezoelectric materials [ 17 , 18 ]. This is the phenomenon of material deformation when voltage is applied to piezoelectric materials [ 19 , 20 ].…”

Editorial for the Special Issue on Piezoelectric Transducers: Materials, Devices and Applications, Volume II

“…This is the second volume of the Special Issue focused on piezoelectric transducers, covering a wide range of topics, including the design, fabrication, characterization, packaging, and system integration or final applications of mili/micro/nano-electro-mechanical systems-based transducers, featuring piezoelectric materials and devices. This new volume has compiled a total of 14 papers, with the latest advances in areas such as hysteresis compensation [1][2][3], cylindrical piezoelectric transducers [4], flextensional devices for underwater applications [5], electromechanical transformers [6], actuators for image stabilization [7], electric current sensing [8], rotary and linear ultrasonic motors [9,10], locomotion of miniature robots [11], displacement amplification structures [12] nanoparticles with piezoelectric properties [13], and a review paper on aerospace applications [14].…”