MajX Shield: Signal Processing
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A time/ frequency diagram shows gear mesh harmonics and a
turbocharger blade pass tone which can be separated with order
analysis and a reference tachometer |
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The extract button will capture the processing definition of
important features such as the amplitude of this turbo harmonic RPM
subset and place them on the Feature Extraction List as a source for
subsequent Feature Extraction |
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A spectrum derived from averaging adaptively re-sampled data
relative to shaft position will emphasize rotationally synchronous
events such as this blade pass tone from a turbocharger
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Uncover periodic transient behavior by producing
a rev domain ensemble which is stacked in an intensity plot.
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Column-wise ensemble statistics in combination
with order domain filtering are used to accentuate transient
behaviors and to produce a 2D impulse feature.
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Vibration data is re-sampled to the rev domain and filtered from 10
to 100 orders, then framed into 1 rev long segments to produce this
1097 member ensemble. Viewed top-down in a color intensity plot, the
ensemble reveals rotationally synchronous impulse events, while
column-wise RMS levels creates a 2-D impulse feature |
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