To increase the contact area and obtain more uniform contact stress distribution within contact surface for reducing wear
a non-axisymmetric vibration model of thin shell is adopted to develop a novel cylinder driving ultrasonic motor
and the structure of the novel motor was designed following the driving mechanism of piezoelectric ceramic. The modal and harmonic response analysis was performed by ANSYS 9.0
and then the elliptic motion locus of the stator was plotted and discussed. Under 150 V driving voltage and at 16.1 kHz resonant frequency
its velocity of free load gets 64 r/min and maximum output load reaches to 1.8 N·m.
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references
WILLIAMS A, BROWN W. Piezoelectric motor: US,2439499 [P]. 1942-04-13.
XU Zhike,HU Minqiang,JIN Long, et al. The optimization design of traveling wave type ultrasonic motor with large diameter [J]. Micromotors, 2005, 38(3):16-19.