A Linear Ultrasonic Motor Using Longitudinal Vibration

Abstract

This study presents a linear ultrasonic motor. The structure is symmetrical and two groups of piezoelectric ceramics (PZT-8) are arranged along an axis. This way can make the motor structure compact. Operation principle of this motor is analyzed. Make and test a prototype to verify the feasibility of the principle. The experimental results show that the maximum no-load speed of the motor is 1289mm/s under the excitation of electrical signal with frequency of 29.96 kHz and voltage of 300VP-P.