Direct current motor for closed-loop feedback control

Electricity: motive power systems – Limitation of motor load – current – torque or force

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318138, 318734, 318735, H02P 100

Patent

active

059558539

ABSTRACT:
A direct current motor for use in a closed-loop control system is disclosed that produces a time varying signal indicative of a position of the motor. An embodiment of the motor includes a rotating commutator having a plurality of slots, a plurality of windings, the number of windings corresponding to one more than the number of slots of the commutator, and a plurality of brushes that are configured so that application of a direct current voltage across the brushes causes the commutator to rotate.
A closed-loop control system is also disclosed that includes a direct current voltage source, a direct current motor in accordance with the present, a motor position signal source that generates a motor position signal for rotating the shaft of the direct current motor to a desired position, and a feedback circuit that corrects for any error in the desired position of the shaft of the direct current motor.
Further disclosed are methods of controlling a position of a direct current motor constructed in accordance with the present invention in a closed-loop feedback control system.

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Eurpoean Search Report Dated Feb. 24, 1999. for related EPO Application No. 98300335. 1-2207.

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