US PATENT SUBCLASS 388 / 821
.~.~ By voltage and current modification

Current as of: June, 1999
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388 /   HD   ELECTRICITY: MOTOR CONTROL SYSTEMS

800  DF  CLOSED LOOP SPEED CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {4}
816  DF  .~ Analog armature control {6}
821.~.~ By voltage and current modification

DEFINITION

Classification: 388/821

By voltage and current modification:

(under subclass 816) Subject matter wherein the control circuit functions by determining both the voltage and current relationships between a reference signal and a feedback signal and by applying an adjustment, based on this relationship, to the motor input.