Patent ID: 6332116
Filing Date: 2001-12-18
Classification: G01H

Abstract:
A method for analyzing an input signal acquired from a mechanical system containing a rotating apparatus, the method comprising:receiving samples of the input signal, wherein the input signal is sampled in time;performing an invertible joint time-frequency transform on the samples of the input signal to produce a first array of coefficients which depend on time and frequency;selecting first coefficients from the first array which correspond to a first subset of one or more order components in the input signal;generating a time domain signal from the first coefficients; andpresenting the time domain signal to a user on a presentation device, wherein the time domain signal is useable in analyzing the mechanical system; andadjusting the mechanical system in response to analysis of the time domain signal, wherein said adjusting the mechanical system comprises one or more of: 1) changing a design of the mechanical system; 2) replacing one or more components of the mechanical system; 3) predicting a failure of one or more components of the mechanical system; and 4) adding a sound-absorbent material to one or more locations of the mechanical system.