Method and apparatus for eliminating stall and cogging in multi-phase stepping motors
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United States of America Patent
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Feb 24, 2009
Grant Date -
May 1, 2008
app pub date -
Oct 30, 2006
filing date -
Oct 30, 2006
priority date (Note) -
Expired
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Abstract
The lead or lag relationship between the stator and rotor of a stepper motor is monitored on a continuing basis by an incremental encoder, in feed-back relation, and adjusts the lead or lag to within optimum range values to thereby prevent motor stalls and motor cogging.
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