Brushless motor control system
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United States of America Patent
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Dec 14, 1993
Grant Date -
N/A
app pub date -
Apr 13, 1992
filing date -
Apr 13, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An all-digital control system for a brushless, three-phase, DC motor includes a main signal processor in direct digital communication with a drive controller. The controller generates a pulse width modulated signal having a duty cycle established by the command signal. A three-phase bridge generates a two-state control signal in response to the pulse width modulated signal. The control signal has an on-state which lasts for the duty cycle. A digital tachometer signal indicative of motor speed or position is thereupon processed and reported back to the main processor.
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Cited Art Landscape
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