Abstract
In order to obtain a low-speed output for micro drive applications, a hollow ring ultrasonic motor is proposed and designed. The operation principle and structure of the motor are introduced. The structure of stator is analyzed with modal analysis, harmonic response analysis and transient response analysis by using the finite element analysis software. The resonant frequency and the relation curve of frequency and displacement and the relation curve of time with displacement about the working mode are obtained. The prototype of ultrasonic motor is fabricated according to its design scheme. The torque of the motor is tested through the experimental platform. The above work provides theoretical guidance for the further study of traveling wave ultrasonic motors.
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