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Abstract: A
method of detecting abrupt information in the signal is presented, which
uses the singularity value decomposition about track matrix of attractor
reconstructed by time series. Using this method, to detect is performed
according to a numerical signal and a numerical simulating signal of
early rub-impact between rotor and stator of rotating machinery. Through
comparing its detecting results with ones gotten using wavelet
transform, the conclusion can be gained that this method is feasible and
can be used to detect signal’s singularity. Then a further investigation
is done about the effect of the noise signal on the results of the
presented method and the wavelet transform. Finally, this method is used
to detect the testing signal of early rub-impact between rotor and
stator of rotating machinery, and the satisfying results are gotten.
Key words: Abrupt information Singularity value decomposition
Rub-impact
CLC No: TN911
河北省博士基金资助项目(01547019D).
Received 20010606, received in revised form 20020011222
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