State advance controller commutation loop for brushless D.C. motors
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United States of America Patent
Stats
-
May 29, 2001
Grant Date -
N/A
app pub date -
Oct 5, 1999
filing date -
Oct 6, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and system for advancing the state of commutation of an electronically commutated brushless D.C. motor. Impending motor stall is detected by measuring current flow through the motor windings to ascertain magnetic saturation. Upon such detection, a time sequence is started and if a change of state has not occurred within the time sequence, the state is advanced to the next succeeding state.
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Cited Art Landscape
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