Apparatus and method for detecting vibrations of the shaft...

Details Apparatus and method for detecting vibrations of the shaft... Apparatus and method for detecting vibrations of the shaft...

2006-10-10

2006-10-10

Chapman, John E. (Department: 2856)

Measuring and testing

Vibration

Sensing apparatus

Reexamination Certificate

active

07117744

ABSTRACT:
A method for detecting vibrations of a shaft of an electrical machine includes measuring at least one of a shaft voltage and a shaft current and analyzing the measured at least one of the shaft voltage and the shaft current so as to determine the vibrations. In addition, an apparatus for detecting vibrations of a shaft of an electrical machine includes a first grounding device disposed at a first point on the shaft on a first side of the electrical machine and a second grounding device disposed at a second point of the shaft on a second side of the electrical machine. The second grounding device is configured to measure at least one of a shaft voltage and a shaft current.

REFERENCES:
patent: 3885420 (1975-05-01), Wolfinger
patent: 3934459 (1976-01-01), Wolfinger et al.
patent: 4137780 (1979-02-01), Wolfinger
patent: 4148222 (1979-04-01), Wolfinger
patent: 4317371 (1982-03-01), Wolfinger
patent: 4444064 (1984-04-01), Wolfinger
patent: 4793186 (1988-12-01), Hurley
patent: 4814699 (1989-03-01), Koziel et al.
patent: 4831295 (1989-05-01), Posedel
patent: 5006769 (1991-04-01), Posedel
patent: 5543698 (1996-08-01), Tao et al.
patent: 6460013 (2002-10-01), Nippes
patent: 6714020 (2004-03-01), Hobelsberger et al.
patent: 197 42 622 (1999-04-01), None
patent: 0 271 678 (1988-06-01), None
patent: 0 391 181 (1990-10-01), None
patent: WO 00/69062 (2000-11-01), None
M. R. Bai et al.: Development of an on-line diagnosis system for rotor vibration via model-based intelligent inference, Journal of the Acoustical Society of America, American Institute of Physics, New York, vol. 107, No. 1, Jan. 2000, pp. 315-323.

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