Control system for brushless DC motor
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United States of America Patent
Stats
-
Dec 8, 1987
Grant Date -
N/A
app pub date -
Jan 30, 1987
filing date -
Mar 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control system for brushless DC motors detects counter electromotive force voltages induced in motor windings and produces rotor position detection signals from the counter electromotive force voltages. The maximum value of an input DC current to a motor drive circuit is held and the phase of the rotor position detection signals is changed in accordance with the held value of the input DC current to prevent the phase of the position detection signals from varying with the load on the brushless DC motor.
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Cited Art Landscape
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