Method of driving a stepping motor

Details Method of driving a stepping motor Method of driving a stepping motor

1983-06-01

1984-11-06

Weldon, Ulysses

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2904

Patent

active

044814542

ABSTRACT:
A stepping motor is rotated stepwise in angular increments by successively exciting a plurality of phases. When the stepping motor is to be stopped, the phase or phases which have been finally excited immediately prior to motor stop control are kept intermittently excited to stop the stepping motor. For starting the stepping motor again, the phase or phases being excited in the stop mode are supplied with continuous currents for an interval of time longer than the period of each single pulse applied to the phase or phases excited in the stop mode and shorter than the period in which a current flowing through the excited phase or phases become saturated, and thereafter the phases starting with a phase or phases following the phase or phases excited with the continuous currents are successively supplied with currents.

REFERENCES:
patent: 4339702 (1982-07-01), Araki et al.

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