Piezoelectric actuator control for high rate of operation
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United States of America Patent
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Sep 27, 2016
Grant Date -
Jul 16, 2015
app pub date -
Jan 10, 2014
filing date -
Jan 10, 2014
priority date (Note) -
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Abstract
Described herein are methods for controlling a piezoelectric element, for example, for use in a fuel injector, safely and efficiently at higher frequencies without causing damage to the fuel injector due to excessive heating. Methods incorporating features of the present invention can utilize waveform generation, waveform scaling and power amplification to drive a piezoelectric element. In some embodiments, various operating conditions are utilized to determine a scaling value which is compared to a target value to determine the level of scaling to be utilized with a generated waveform.
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