Acoustic monitor for rotary electrical machinery

Details Acoustic monitor for rotary electrical machinery Acoustic monitor for rotary electrical machinery

1986-04-10

1988-02-02

Levy, Stewart J.

Measuring and testing

Vibration

Sensing apparatus

73593, G01N 2904

Patent

active

047222263

ABSTRACT:
Loose field windings in a rotating electrical machine are detected by sensing acoustic waves created by stator bars and stator wedges. A sensor is mounted on the rotor which responds to sensed acoustic waves by generating an electrical signal. The signal is suitably conditioned and transmitted by telemetry means to a computer for processing.

REFERENCES:
patent: 2204425 (1940-06-01), Mershon
patent: 4004464 (1977-01-01), Himmler
patent: 4518917 (1985-05-01), Oates et al.
patent: 4573358 (1986-03-01), Luongo

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