Apparatus and method for analyzing the condition and performance

Details Apparatus and method for analyzing the condition and performance Apparatus and method for analyzing the condition and performance

1996-02-29

1997-11-11

Snow, Walter E.

Measuring and testing

Vibration

Sensing apparatus

73659, 73650, G01H 1100, G01H 100, G08B 2300, G01N 2900

Patent

active

056866690

ABSTRACT:
A method and device for processing encoder signals from turbomachines to produce frequency modulation signals representing fully isolated rotor vibrational resonances. Multi-sensor and multi-sideband group processing provides enhanced results. The method provides dramatically improved frequency resolution. Amplitude modulation and random noise effects are removed by a variety of artifact-free techniques. Signals then are completely separated into components for rotational vibration and translational vibration. Fully isolating rotational vibration unmasks previously undetectable signal components of diagnostic value. In cases of high background vibration, Wiener filtering removes the effects of exogenous vibration. By these various techniques, the present invention provides significantly enhanced diagnostic information regarding condition and performance in turbomachines.

REFERENCES:
patent: 5105105 (1992-04-01), Hernandez et al.

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