Method for Monitoring the Condition of a Commutator of an Electric Motor
First Claim
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1. A method for detecting a packed slot condition in a commutator of an electric motor comprising the steps of:
- (a) providing an electric motor having a commutator, the commutator having a plurality of segments separated from each other by a slot;
(b) monitoring the current going through the electric motor;
(c) determining if the current going through the electric motor being monitored in step (b) has changed from a preset value; and
(d) providing a signal to indicate that the current going through the electric motor has changed to thereby detect for a packed slot in the commutator.
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Abstract
A method for detecting a packed slot condition in a commutator of an electric motor comprising the steps of: (a) providing an electric motor having a commutator, the commutator having a plurality of segments separated from each other by a slot; (b) monitoring the current going through the electric motor; (c) determining if the current going through the electric motor being monitored in step (b) has changed from a preset value; and (d) providing a signal to indicate that the current going through the electric motor has changed to thereby detect for a packed slot in the commutator.
20 Citations
20 Claims
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1. A method for detecting a packed slot condition in a commutator of an electric motor comprising the steps of:
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(a) providing an electric motor having a commutator, the commutator having a plurality of segments separated from each other by a slot; (b) monitoring the current going through the electric motor; (c) determining if the current going through the electric motor being monitored in step (b) has changed from a preset value; and (d) providing a signal to indicate that the current going through the electric motor has changed to thereby detect for a packed slot in the commutator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting a packed slot condition in a commutator of an electric motor comprising the steps of:
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(a) providing an electric motor having a commutator and an armature, the commutator having a plurality of segments separated from each other by a slot; (b) monitoring the current going through the electric motor; (c) determining if the current going through the electric motor being monitored in step (b) has decreased or increased from a preset value thereby indicating an increase or decrease, respectively, in a resistance of the armature of the electric motor; and (d) providing a signal to indicate that the current going through the electric motor has changed to thereby detect for a packed slot in the commutator. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for detecting a packed slot condition in a commutator of a brushed DC electric motor comprising the steps of:
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(a) providing a brushed DC electric motor having a commutator and an armature, the commutator having a plurality of segments separated from each other by a slot; (b) monitoring the current going through the electric motor; (c) determining if the current going through the electric motor being monitored in step (b) has decreased or increased from a preset value thereby indicating an increase or decrease, respectively, in a resistance of the armature of the electric motor; and (d) providing a signal to indicate that the current going through the electric motor has changed to thereby detect for a packed slot in the commutator, the signal being one of a visual, audio or diagnostic trouble code signal. - View Dependent Claims (20)
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Specification