CONTROL METHOD FOR PIEZOELECTRIC MOTOR, PIEZOELECTRIC MOTOR, AND ROBOT
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United States of America Patent
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Issued Date -
Jun 22, 2023
app pub date -
Dec 14, 2022
filing date -
Dec 16, 2021
priority date (Note) -
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Abstract
A control method for a piezoelectric motor having a vibrating portion including a piezoelectric element and a transmitting portion transmitting vibration of the vibrating portion to a driven member, and synthesizing longitudinal vibration and flexural vibration by energization of the piezoelectric element to vibrate the vibrating portion and elliptically move the transmitting portion and moving the driven member by the elliptical motion, includes changing an orbit of the elliptical motion according to a load received by the transmitting portion.
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