Method and device for controlling the rotation speed of a piezoelectric motor rotor
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United States of America Patent
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Feb 14, 2012
Grant Date -
Nov 24, 2011
app pub date -
Jul 10, 2007
filing date -
Jul 13, 2006
priority date (Note) -
Expired
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Abstract
The present invention relates to a method of controlling the speed of rotation of a piezoelectric motor comprising at least one step of determining the variation of the speed of rotation as a function of the frequency of the excitation voltages of the piezoelectric motor for the actual temperature of the piezoelectric material.
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