Piezoelectric motor, drive circuit, and drive method
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United States of America Patent
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Apr 10, 2018
Issued Date -
N/A
app pub date -
Jul 17, 2015
filing date -
Apr 18, 2012
priority date (Note) -
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Abstract
A piezoelectric motor includes a rotating body, a piezoelectric actuator including a protruding section having contact with the rotating body, and adapted to rotate the rotating body due to a motion of the protruding section when driving a piezoelectric element, and a drive circuit adapted to drive the piezoelectric element, and the drive circuit includes a drive signal generation section adapted to output a drive signal with a predetermined frequency, and an LC filter adapted to block a frequency higher than the predetermined frequency, and applies the drive signal to the piezoelectric element via the LC filter.
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