Control method for piezoelectric drive device and control method for manipulator
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United States of America Patent
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Aug 22, 2023
Grant Date -
May 12, 2022
app pub date -
Nov 8, 2021
filing date -
Nov 9, 2020
priority date (Note) -
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Abstract
A control method for a piezoelectric drive device having a vibrating portion including a piezoelectric element and a transmitting portion, synthesizing longitudinal vibration and flexural vibration by energization to the piezoelectric element to vibrate the vibrating portion and make elliptic motion of the transmitting portion, and moving a driven member by the elliptic motion of the transmitting portion, includes controlling a movement amount of the driven member by changing amplitude of the longitudinal vibration with amplitude of the flexural vibration kept constant.
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