Step-by-step motor unit
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United States of America Patent
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-
Oct 29, 1985
Grant Date -
N/A
app pub date -
Sep 7, 1983
filing date -
Sep 10, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To increase the speed of rotation of a step-by-step motor in the forward or reverse direction, the motor is driven at its 'synchronism' speed. For the motor to perform N steps at high speed involves applying a starting drive pulse that induces forward or reverse motion, then applying N-2 alternating maintenance pulses and finally applying a stopping pulse. Preferably, a circuit using the coupling coefficient of the motor as a servo-control parameter defines the instants at which the maintainance or stopping pulses are applied.
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