Motor control method and motor control apparatus for dental handpiece
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United States of America Patent
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Jul 7, 2015
Grant Date -
Apr 25, 2013
app pub date -
May 18, 2011
filing date -
Jul 2, 2010
priority date (Note) -
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Abstract
The present invention relates to a motor control method for a dental handpiece provided with a motor that rotationally drives a cutting tool. The control method includes a step A of limiting the motor current to a first limit current I1 when the load torque applied to the cutting tool exceeds a preset limit torque value, and a step B of controlling the motor current to be equal to or lower than a second limit current, which is lower than the first limit current, when it is detected that the motor stops rotating.
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