Resonant-type inertia linear piezoelectric motor based on a synchronized switching stimulated by harmonic synthesized mechanical square wave.

A novel resonant linear piezoelectric motor based on a synchronized switching stimulated by harmonic synthesized mechanical square wave was designed in this study. The driving mechanism of the motor was also investigated. The periodic square wave motions of the clutch and the vibrator were generated by composing two sinusoidal resonant bending vibrations with a frequency ratio of 1:3. The linear motion of the motor output shaft can be realized through the cooperation between the clutch and the vibrator. An experimental device was established to validate the working principle and evaluate the performance of the motor. The prototype motor reached the maximum no-load velocity of 16.35 mm/s with a clutch driving voltage of 200 V