Design and Experimental Studies of a Novel Rotating Ultrasonic Motor Operating in a Single-Mode

Ultrasonic motors operating in a single-mode have attracted more and more attention due to their advantages of simple driving circuit, flexible design and compact structure. Although there are a few rotating ultrasonic motors operating in a single-mode, they have problems of poor output performance and difficult to be clamped, severely restricting their practical applications. To attack these problems, a novel rotating ultrasonic motor driven by a single-mode is proposed and investigated in this study. Firstly, the geometric dimensions and two operating modes of the proposed ultrasonic motor stator are calculated using the finite element software. Secondly, the vibration characteristics of the stator prototype are tested and compared to the simulation results. Finally, experimental studies on the motor prototype are carried out. The feasibility of the structure design of the proposed motor and the correctness of its operating principle are verified by the finite element analysis and experimental results.