Monitoring of the wear of sliding electrical contacts and its ap

Details Monitoring of the wear of sliding electrical contacts and its ap Monitoring of the wear of sliding electrical contacts and its ap

1997-07-14

2000-03-07

Ballato, Josie

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324 711, 73104, G01R 2708

Patent

active

060345314

ABSTRACT:
The method of monitoring the wear of at least one sliding electrical contact of a brush, sliding over a track which can move with respect to the brush, comprises the measurement of the electrical resistance of this contact, the delivery of an image signal corresponding to this resistance, the following of its variations, the construction of a reference signal indicative of a state of wear of the contact, the comparison of the image signal with the reference signal and the derivation of a signal, resulting from this comparison, corresponding to the state of wear of the contact. The resistance is measured by the ratio of the variations in the voltage across the terminals of the contact to the variations in the current flowing through this contact.

REFERENCES:
patent: 3808593 (1974-04-01), Kopernik et al.
patent: 4694686 (1987-09-01), Fildes et al.

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