Detection of the amount of wear on a motor drive system

Details Detection of the amount of wear on a motor drive system Detection of the amount of wear on a motor drive system

2006-12-08

2009-12-08

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S242000, C324S522000, C340S648000, C340S679000

Reexamination Certificate

active

07629723

ABSTRACT:
A method and a device, respectively, for detecting the amount of wear on the carbon brush drive system of an electrically commutated d.c. motor which is used, for example, in the form of a pump motor in a motor vehicle. The d.c. motor is driven by at least two carbon brushes and includes means for detecting the generative follow-up voltage. The amount of wear on at least one carbon brush is derived from the time behavior of the generative motor voltage and displayed to the driver.

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