Stepper motor stop and stalling detection method, and stop-detector-equipped stepper motor
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United States of America Patent
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Oct 7, 2008
Grant Date -
Jun 14, 2007
app pub date -
Nov 3, 2004
filing date -
Nov 3, 2003
priority date (Note) -
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Abstract
A stop-detection method intended for a multi-phase synchronous geared motor that is controlled in a stepping mode, which measures the sum of the currents circulating in each of the N phases of the geared motor. In the method the stop detection threshold is calculated in relation to the change in the sum of the currents.
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