Method and means for stable operation of a synchronous motor
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United States of America Patent
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-
Jun 19, 1984
Grant Date -
N/A
app pub date -
May 29, 1981
filing date -
May 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Stability in operating a synchronous stepping motor in mid-frequency is achieved by monitoring instantaneous power to the motor and adjusting the phase of the motor drive waveform as needed to maintain uniform speed. In an embodiment in which a pulse width modulator responds to a reference signal waveform, the phase of the reference signal waveform is varied to adjust the instantaneous power delivered to the motor.
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