Ultrasonic system controls, tool recognition means and feedback methods
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United States of America Patent
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Apr 28, 2015
Grant Date -
Oct 6, 2011
app pub date -
Apr 1, 2011
filing date -
Apr 1, 2010
priority date (Note) -
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Abstract
An ultrasonic electro-mechanical resonant system and instrument that provides improvements in the design and implementation of a feedback system. The disclosed configuration and orientation of coils enhance the motional or velocity feedback signals while minimizing the effects of transformer coupling. A two coil and a three coil approach is disclosed that takes advantage of non-homogeneous magnetic fields. An asymmetrical arrangement enables velocity signals to be coupled into the coils without requiring additional signal conditioning or capacitive elements.
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