An Analysis of the Main Factors on the Wear of Brushes for Brush-Type Motors and the Ways of Increasing their Lifetime

Oleg S. Kachin; Alexander S. Karakulov; Alexander B. Serov

doi:10.4028/www.scientific.net/AMM.792.107

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 792An Analysis of the Main Factors on the Wear of...

An Analysis of the Main Factors on the Wear of Brushes for Brush-Type Motors and the Ways of Increasing their Lifetime

Abstract:

The mathematical description of the wear processes of brushes of brush-type motors is described. The actions directed on increase of the lifetime of brushes are offered. The proposed mathematical model of the wear processes of brushes considers the highest number of parameters of a sliding contact, including sparking energy of windings switching and the mechanical condition of a commutator and bearings. The approach for evaluating the optimum pressure on the brush in order to increase its resource is offered. The real and the virtual lifetime tests of the universal motor considering changing of the mechanical state of the commutator and bearings during lifetime were carried-out. The constant force value acting on the brush which provides its lifetime increase by 11% is proposed.

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Periodical:

Applied Mechanics and Materials (Volume 792)

Pages:

107-112

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.792.107

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Online since:

September 2015

Authors:

Oleg S. Kachin, Alexander S. Karakulov, Alexander B. Serov

Keywords:

AC Commutator Motor, Brush, Brush-Type Motor, Commutator, Contact Pressure, Dc Motor, Lifetime, Sliding Contact, Universal Motor, Wear

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References

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